{"id":10823,"date":"2023-08-10T14:41:17","date_gmt":"2023-08-10T12:41:17","guid":{"rendered":"https:\/\/photo-venturelli.com\/french-calcium-a-unique-lost-know-how\/"},"modified":"2026-06-20T16:35:56","modified_gmt":"2026-06-20T14:35:56","slug":"french-calcium-a-unique-lost-know-how","status":"publish","type":"post","link":"https:\/\/photo-venturelli.com\/en\/french-calcium-a-unique-lost-know-how\/","title":{"rendered":"French calcium, a unique lost know-how."},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"10823\" class=\"elementor elementor-10823 elementor-405\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f41678b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f41678b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container 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globale de l&#039;usine de calcium de La Roche de Rame REP032_15800\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_8_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Enfournement-dun-lot-de-metaux.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Enfournement-dun-lot-de-metaux.jpg?bwg=1691757896\"              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src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Detail-machine-de-broyage-des-metaux.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Detail-machine-de-broyage-des-metaux.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '9', '', '', '0')\"                  image_id=\"9\"                  image_key=\"9\"                  alt=\"Detail machine de broyage des metaux REP032_15838\"                  title=\"Detail machine de broyage des metaux REP032_15838\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_10_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Demoulage-dun-lingot-de-calcium-1.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Demoulage-dun-lingot-de-calcium-1.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '10', '', '', '0')\"                  image_id=\"10\"                  image_key=\"10\"                  alt=\"D\u00e9moulage d&#039;un lingot de calcium REP032_15962\"                  title=\"D\u00e9moulage d&#039;un lingot de calcium REP032_15962\" \/>      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data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Reglage-de-la-machine-denfournement-des-matieres-premieres-dans-un-four-calcium.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '11', '', '', '0')\"                  image_id=\"13\"                  image_key=\"11\"                  alt=\"R\u00e9glage de la machine d&#039;enfournement des mati\u00e8res premi\u00e8res dans un four calcium REP032_15941\"                  title=\"R\u00e9glage de la machine d&#039;enfournement des mati\u00e8res premi\u00e8res dans un four calcium REP032_15941\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_12_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Petit-four-de-fusion-pour-les-metaux.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Petit-four-de-fusion-pour-les-metaux.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '12', '', '', '0')\"                  image_id=\"14\"                  image_key=\"12\"                  alt=\"Petit four de fusion pour les m\u00e9taux REP032_15997\"                  title=\"Petit four de fusion pour les m\u00e9taux REP032_15997\" \/>              <\/div>                 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onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '13', '', '', '0')\"                  image_id=\"15\"                  image_key=\"13\"                  alt=\"Oprerateur machine d&#039;enfournement des matieres premieres REP032_16445\"                  title=\"Oprerateur machine d&#039;enfournement des matieres premieres REP032_16445\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_14_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Operation-de-nettoyage-du-four-calcium-apres-extraction-du-lingot.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Operation-de-nettoyage-du-four-calcium-apres-extraction-du-lingot.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '14', '', '', '0')\"                  image_id=\"16\"                  image_key=\"14\"                  alt=\"Operation de nettoyage du four calcium apr\u00e8s extraction du lingot REP032_15975\"                  title=\"Operation de nettoyage du four calcium apr\u00e8s extraction du lingot REP032_15975\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_15_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Observation-visuelle-et-evaluation-de-la-temperature-des-fours-calcium.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Observation-visuelle-et-evaluation-de-la-temperature-des-fours-calcium.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '15', '', '', '0')\"                  image_id=\"17\"     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src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Metallurgie-du-calcium-chargement-du-four-en-matieres-premieres-1.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Metallurgie-du-calcium-chargement-du-four-en-matieres-premieres-1.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '16', '', '', '0')\"                  image_id=\"18\"                  image_key=\"16\"                  alt=\"M\u00e9tallurgie du calcium, chargement du four en mati\u00e8res premi\u00e8res REP032_15911\"                  title=\"M\u00e9tallurgie du calcium, chargement du four en mati\u00e8res premi\u00e8res REP032_15911\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_17_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Machine-denfournement-des-matieres-premieres-dans-un-four-calcium.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Machine-denfournement-des-matieres-premieres-dans-un-four-calcium.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '17', '', '', '0')\"                  image_id=\"19\"               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src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Four-calcium-usine-metallurgique-de-La-Roche-de-Rame-1.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Four-calcium-usine-metallurgique-de-La-Roche-de-Rame-1.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '18', '', '', '0')\"                  image_id=\"20\"                  image_key=\"18\"                  alt=\"Four calcium, usine m\u00e9tallurgique de La Roche de Rame REP032_16389\"                  title=\"Four calcium, usine m\u00e9tallurgique de La Roche de Rame REP032_16389\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_19_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Extraction-des-rejets-dun-four-calcium.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Extraction-des-rejets-dun-four-calcium.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '19', '', '', '0')\"                  image_id=\"21\"                  image_key=\"19\"                  alt=\"Extraction des rejets d&#039;un four calcium REP032_16428\"                  title=\"Extraction des rejets d&#039;un four calcium REP032_16428\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_20_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Extraction-des-rejets-dun-four-calcium-2.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Extraction-des-rejets-dun-four-calcium-2.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '20', '', '', '0')\"                  image_id=\"22\"                  image_key=\"20\"                  alt=\"Extraction des rejets d&#039;un four calcium (2)\"                  title=\"Extraction des rejets d&#039;un four calcium (2)\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_21_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Extraction-des-rejets-dun-four-calcium-3.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Extraction-des-rejets-dun-four-calcium-3.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '21', '', '', '0')\"                  image_id=\"23\"                  image_key=\"21\"                  alt=\"Extraction des rejets d&#039;un four calcium (3)\"                  title=\"Extraction des rejets d&#039;un four calcium (3)\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_22_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Enfournement-des-matieres-premieres-dans-un-four-calcium.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Enfournement-des-matieres-premieres-dans-un-four-calcium.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '22', '', '', '0')\"                  image_id=\"24\"                  image_key=\"22\"                  alt=\"Enfournement des mati\u00e8res premi\u00e8res dans un four calcium\"                  title=\"Enfournement des mati\u00e8res premi\u00e8res dans un four calcium\" \/>              <\/div>                            <div id=\"bwg_filmstrip_thumbnail_23_0\"                class=\"bwg_slideshow_filmstrip_thumbnail_0 bwg_slideshow_thumb_deactive_0\"                data-style=\"width:161px; height:90px;\">                <img decoding=\"async\" class=\"bwg_filmstrip_thumbnail_img bwg_slideshow_filmstrip_thumbnail_img_0\"                  style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  data-style=\"width:161px; height:107.87px; margin-left: 0px; margin-top: -8.935px;\"                  src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Conduite-de-la-machine-denfournement-des-matieres-premieres.jpg?bwg=1691757896\"                  data-src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/thumb\/Conduite-de-la-machine-denfournement-des-matieres-premieres.jpg?bwg=1691757896\"                  onclick=\"bwg_change_image(parseInt(jQuery('#bwg_current_image_key_0').val()), '23', '', '', '0')\"                  image_id=\"25\"                  image_key=\"23\"                  alt=\"Conduite de la machine d&#039;enfournement des mati\u00e8res premi\u00e8res\"                  title=\"Conduite de la machine d&#039;enfournement des mati\u00e8res premi\u00e8res\" \/>              <\/div>                        <\/div>        <\/div>        <div class=\"bwg_slideshow_filmstrip_right_0\">          <i class=\"bwg-icon-angle-right\"><\/i>        <\/div>        <div class=\"bwg_slideshow_filmstrip_right_disabled_0\">          <i class=\"bwg-icon-angle-right\"><\/i>        <\/div>      <\/div>          <div id=\"bwg_slideshow_image_container_0\"         class=\"bwg_slideshow_image_container_0\"         data-params='{&quot;bwg_source&quot;:&quot;slider&quot;,&quot;bwg_current_key&quot;:&quot;&quot;,&quot;bwg_transition_duration&quot;:100,&quot;bwg_trans_in_progress&quot;:false,&quot;data&quot;:[{&quot;id&quot;:&quot;11&quot;,&quot;alt&quot;:&quot;Vue globale de l&amp;#039;usine de calcium de La Roche de Rame REP032_16026-1&quot;,&quot;description&quot;:&quot;Copyright: Erick Venturelli&quot;,&quot;filetype&quot;:&quot;jpg&quot;,&quot;filename&quot;:&quot;Vue-globale-de-lusine-de-calcium-de-La-Roche-de-Rame-1&quot;,&quot;image_url&quot;:&quot;\\\/imported_from_media_libray\\\/Vue-globale-de-lusine-de-calcium-de-La-Roche-de-Rame-1.jpg?bwg=1691757896&quot;,&quot;thumb_url&quot;:&quot;\\\/imported_from_media_libray\\\/thumb\\\/Vue-globale-de-lusine-de-calcium-de-La-Roche-de-Rame-1.jpg?bwg=1691757896&quot;,&quot;redirect_url&quot;:&quot;&quot;,&quot;date&quot;:&quot;2023-08-11 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REP032_15919&quot;,&quot;filetype&quot;:&quot;jpg&quot;,&quot;filename&quot;:&quot;Enfournement-des-matieres-premieres-dans-un-four-calcium&quot;,&quot;image_url&quot;:&quot;\\\/imported_from_media_libray\\\/Enfournement-des-matieres-premieres-dans-un-four-calcium.jpg?bwg=1691757896&quot;,&quot;thumb_url&quot;:&quot;\\\/imported_from_media_libray\\\/thumb\\\/Enfournement-des-matieres-premieres-dans-un-four-calcium.jpg?bwg=1691757896&quot;,&quot;redirect_url&quot;:&quot;&quot;,&quot;date&quot;:&quot;2023-08-11 12:43:06&quot;,&quot;is_embed&quot;:false,&quot;is_embed_video&quot;:false,&quot;image_width&quot;:&quot;1200&quot;,&quot;image_height&quot;:&quot;803&quot;,&quot;thumb_width&quot;:&quot;500.00&quot;,&quot;thumb_height&quot;:&quot;335.00&quot;},{&quot;id&quot;:&quot;25&quot;,&quot;alt&quot;:&quot;Conduite de la machine d&amp;#039;enfournement des mati\\u00e8res premi\\u00e8res&quot;,&quot;description&quot;:&quot;Ref : 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        data-filmstrip-position=\"bottom\"         data-filmstrip-size=\"90\">      <div class=\"bwg_slide_container_0\">        <div class=\"bwg_slide_bg_0\">          <div class=\"bwg_slider_0\">                            <span class=\"bwg_slideshow_image_spun_0\" id=\"image_id_0_11\">                    <span class=\"bwg_slideshow_image_spun1_0\">                      <span class=\"bwg_slideshow_image_spun2_0\">                                                  <a  class=\"bwg-a bwg_lightbox\" href=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/photo-gallery\/imported_from_media_libray\/Vue-globale-de-lusine-de-calcium-de-La-Roche-de-Rame-1.jpg?bwg=1691757896\" data-image-id=\"11\" data-elementor-open-lightbox=\"no\">                          <img decoding=\"async\" id=\"bwg_slideshow_image_0\"                               class=\"skip-lazy bwg_slide bwg_slideshow_image_0 \"                               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      <\/form>        <style>          #bwg_container1_0 #bwg_container2_0 #spider_popup_overlay_0 {          background-color: #000000;          opacity: 0.70;          }          <\/style>        <div id=\"bwg_spider_popup_loading_0\" class=\"bwg_spider_popup_loading\"><\/div>        <div id=\"spider_popup_overlay_0\" class=\"spider_popup_overlay\" onclick=\"spider_destroypopup(1000)\"><\/div>        <input type=\"hidden\" id=\"bwg_random_seed_0\" value=\"648307878\">                <\/div>    <\/div>    <script>      if (document.readyState === 'complete') {        if( typeof bwg_main_ready == 'function' ) {          if ( jQuery(\"#bwg_container1_0\").height() ) {            bwg_main_ready(jQuery(\"#bwg_container1_0\"));          }        }      } else {        document.addEventListener('DOMContentLoaded', function() {          if( typeof bwg_main_ready == 'function' ) {            if ( jQuery(\"#bwg_container1_0\").height() ) {             bwg_main_ready(jQuery(\"#bwg_container1_0\"));            }          }        });      }    <\/script>    \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3e56e182 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3e56e182\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7bf30363\" data-id=\"7bf30363\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-237624d5 elementor-widget elementor-widget-text-editor\" data-id=\"237624d5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><\/p>\n<p>For more than 40 years, the metallurgy industry in France has been in constant decline in the face of two challenges&nbsp;; the need to reduce production costs a14> costs of production and negligence or deliberate intention to no longer invest in the raw materials for the metallurgical industry. Calcium, better known in its carbonate form (limestone), is also a metal very important for the metallurgical industry as an additive for steels, for example. <\/p>\n<p><\/p>\n<p><\/p>\n<p>The natural resource requires little investment, however, as the raw material is abundant. raw material is abundant, simply limestone, only the production costs of calcium metal are responsible for the decline and death of Europe&#8217;s only calcium production plant in France.<\/p>\n<p><\/p>\n<p><\/p>\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p><\/p>\n<p><\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"545\" src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Vue-globale-de-lusine-de-calcium-de-La-Roche-de-Rame.jpg\" alt=\"\" class=\"wp-image-559\" srcset=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Vue-globale-de-lusine-de-calcium-de-La-Roche-de-Rame.jpg 800w, https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Vue-globale-de-lusine-de-calcium-de-La-Roche-de-Rame-300x204.jpg 300w, https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Vue-globale-de-lusine-de-calcium-de-La-Roche-de-Rame-768x523.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n<p><\/p>\n<p><\/p>\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p><\/p>\n<p><\/p>\n<p>As a result , the La Roche de Rameplant near Brian\u00e7on Brian\u00e7on closed its doors in 2012 (ten years successively dropped by major groups and fallen into the hands of small private operators operators whose very short-term personal financial objectives had nothing to do with a genuine to develop and grow this company in a European market, despite strong demand. And yet, this plant was remarkable both for the exceptional skills and its unique technology. <\/p>\n<p><\/p>\n<p><\/p>\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p><\/p>\n<p><\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"536\" src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Nettoyage-du-four-calcium.jpg\" alt=\"\" class=\"wp-image-561\" srcset=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Nettoyage-du-four-calcium.jpg 800w, https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Nettoyage-du-four-calcium-300x201.jpg 300w, https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Nettoyage-du-four-calcium-768x515.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n<p><\/p>\n<p><\/p>\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p><\/p>\n<p><\/p>\n<p>For a factory with some conventional furnaces, the production of one tonne of calcium requires more than 5 tonnes of coal, this fuel had been replaced by an heating system that was much less polluting but had become more expensive in the long run.&nbsp; More expensive! Perhaps not, if we include in the overall calculation, the cost of the clean-up of emissions into the atmosphere resulting from the combustion of coal. It is thus that the buyers of calcium metal have turned their attention towards Asia or the pollution caused by the burning of coal is not taken into account or if so only to a limited extent, nor even the cost of labour.   &nbsp;<\/p>\n<p><\/p>\n<p><\/p>\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p><\/p>\n<p><\/p>\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped\"><p><\/p>\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"536\" src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Un-lingot-de-calcium-sortant-du-four.jpg\" alt=\"\" class=\"wp-image-560\" srcset=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Un-lingot-de-calcium-sortant-du-four.jpg 800w, https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Un-lingot-de-calcium-sortant-du-four-300x201.jpg 300w, https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Un-lingot-de-calcium-sortant-du-four-768x515.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n<p><\/p>\n<p><\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"536\" src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Metallurgie-du-calcium-chargement-du-four-en-matieres-premieres.jpg\" alt=\"\" class=\"wp-image-562\" srcset=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Metallurgie-du-calcium-chargement-du-four-en-matieres-premieres.jpg 800w, https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Metallurgie-du-calcium-chargement-du-four-en-matieres-premieres-300x201.jpg 300w, https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Metallurgie-du-calcium-chargement-du-four-en-matieres-premieres-768x515.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n<p><\/p><\/figure>\n<p><\/p>\n<p><\/p>\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p><\/p>\n<p><\/p>\n<p>Our dependence on strategic metals is perhaps poorly taken into account, as well as the total loss of know-howelectric furnaces capable of producing calcium ingots ingots weighing 200 kg, whereas with coal they weigh no more than 30 kg.<\/p>\n<p><\/p>\n<p><\/p>\n<p>But whatever the loss of expertise, never mind the loss of more than 30 jobs in a region facing difficulties. Apparently this consideration having not crossed anyone\u2019s mind, here we are entirely dependent on Asia, on Russia and the USA for our calcium supply. What a terrible waste of expertise&nbsp;!  <\/p>\n<p><\/p>\n<p><\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"536\" src=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Demoulage-dun-lingot-de-calcium.jpg\" alt=\"\" class=\"wp-image-563\" srcset=\"https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Demoulage-dun-lingot-de-calcium.jpg 800w, https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Demoulage-dun-lingot-de-calcium-300x201.jpg 300w, https:\/\/photo-venturelli.com\/wp-content\/uploads\/2023\/08\/Demoulage-dun-lingot-de-calcium-768x515.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n<p><\/p>\n<p><\/p>\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p><\/p>\n<p><\/p>\n<p><em>La Roche de Rame (France) &#8211; January 29, 2012<\/em><\/p>\n<p><\/p>\n<p><\/p>\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p><\/p><p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>French calcium metallurgy in its death throes. Unique know-how lost through neglect. <\/p>\n","protected":false},"author":4,"featured_media":5986,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[628],"tags":[86,11,82,85,87,12,845],"pays":[925],"class_list":["post-10823","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-society","tag-briancon","tag-calcium","tag-france","tag-hautes-alpes","tag-largentiere-la-bessee","tag-la-roche-de-rame","tag-metallurgy","pays-france-en"],"_links":{"self":[{"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/posts\/10823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/comments?post=10823"}],"version-history":[{"count":2,"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/posts\/10823\/revisions"}],"predecessor-version":[{"id":13399,"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/posts\/10823\/revisions\/13399"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/media\/5986"}],"wp:attachment":[{"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/media?parent=10823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/categories?post=10823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/tags?post=10823"},{"taxonomy":"pays","embeddable":true,"href":"https:\/\/photo-venturelli.com\/en\/wp-json\/wp\/v2\/pays?post=10823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}