{"id":15132,"date":"2025-05-23T07:57:05","date_gmt":"2025-05-23T07:57:05","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=15132"},"modified":"2025-05-26T08:20:35","modified_gmt":"2025-05-26T08:20:35","slug":"gcc-vs-pcc-17-key-differences-you-need-to-know-part-1","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/fr\/gcc-vs-pcc-17-key-differences-you-need-to-know-part-1\/","title":{"rendered":"GCC vs PCC\u00a0: 17 diff\u00e9rences cl\u00e9s \u00e0 conna\u00eetre (1re partie)"},"content":{"rendered":"<p>Le carbonate de calcium est un sel inorganique important et largement utilis\u00e9. Il existe deux types de carbonate de calcium selon les proc\u00e9d\u00e9s de fabrication\u00a0: le GCC et le PCC. C&#039;est la charge en poudre la plus utilis\u00e9e dans les industries du plastique, du caoutchouc et du papier. <strong>carbonate de calcium moulu<\/strong>Le carbonate de calcium pr\u00e9cipit\u00e9, \u00e9galement appel\u00e9 GCC, est produit par traitement physique. Les mati\u00e8res premi\u00e8res sont la calcite naturelle, le calcaire, la dolomite, la craie, les coquillages, etc. Le carbonate de calcium pr\u00e9cipit\u00e9, appel\u00e9 PCC, est produit par traitement chimique. Il permet non seulement de r\u00e9duire le co\u00fbt des mati\u00e8res premi\u00e8res des produits plastiques, mais aussi d&#039;en am\u00e9liorer certaines propri\u00e9t\u00e9s. Des recherches montrent que diff\u00e9rents types de carbonate de calcium peuvent am\u00e9liorer consid\u00e9rablement les performances des plastiques de base lorsqu&#039;ils sont utilis\u00e9s correctement. Cependant, distinguer clairement le PCC du GCC a longtemps \u00e9t\u00e9 un d\u00e9fi pour de nombreux utilisateurs. Nous pr\u00e9sentons ci-dessous les diff\u00e9rences entre les deux sous 17 angles diff\u00e9rents.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"969\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC-VS-PCC.webp\" alt=\"\" class=\"wp-image-15158\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC-VS-PCC.webp 1024w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC-VS-PCC-300x284.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC-VS-PCC-768x727.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC-VS-PCC-13x12.webp 13w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC-VS-PCC-600x568.webp 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>01 M\u00e9thode de production<\/strong><\/h2>\n\n\n\n<p>Le GCC est principalement compos\u00e9 de min\u00e9raux naturels tels que la calcite, le marbre, le calcaire, la craie et le marbre blanc. Il s&#039;agit d&#039;une poudre obtenue par broyage m\u00e9canique.<br>Le PCC est principalement produit \u00e0 partir de calcaire et est un mat\u00e9riau en poudre obtenu par calcination, digestion, carbonisation, d\u00e9shydratation, s\u00e9chage et classification.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"781\" height=\"549\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC.webp\" alt=\"\" class=\"wp-image-15139\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC.webp 781w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC-300x211.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC-768x540.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC-18x12.webp 18w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/GCC-600x422.webp 600w\" sizes=\"(max-width: 781px) 100vw, 781px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>02 Masse volumique apparente<\/strong><\/h2>\n\n\n\n<p>La diff\u00e9rence de densit\u00e9 apparente est la distinction la plus \u00e9vidente entre le GCC et le PCC.<\/p>\n\n\n\n<p>La masse volumique apparente du GCC est relativement \u00e9lev\u00e9e, g\u00e9n\u00e9ralement de 0,8 \u00e0 1,3 g\/cm\u00b3\u00a0;<br>La masse volumique apparente du PCC est relativement faible, g\u00e9n\u00e9ralement comprise entre 0,5 et 0,7 g\/cm\u00b3. Certains produits \u00e0 base de nanocarbonate de calcium peuvent m\u00eame pr\u00e9senter une masse volumique apparente aussi faible que 0,28 g\/cm\u00b3 environ.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>03 Valeur d&#039;absorption d&#039;huile<\/strong><\/h2>\n\n\n\n<p>En raison de ses grosses particules, de sa surface lisse et de sa petite surface sp\u00e9cifique, le GCC a une valeur d\u2019absorption d\u2019huile plus faible, g\u00e9n\u00e9ralement de 40 \u00e0 60 ml\/100 g\u00a0;<br>Le PCC, avec des particules plus fines, une surface rugueuse et une surface sp\u00e9cifique plus grande, a une valeur d&#039;absorption d&#039;huile plus \u00e9lev\u00e9e, g\u00e9n\u00e9ralement de 60 \u00e0 90 ml\/100 g.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"500\" height=\"393\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-Hydroxide1-1.webp\" alt=\"\" class=\"wp-image-15143\" style=\"width:726px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-Hydroxide1-1.webp 500w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-Hydroxide1-1-300x236.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-Hydroxide1-1-15x12.webp 15w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\">04 Blancheur<\/h2>\n\n\n\n<p>En raison de la quantit\u00e9 relativement \u00e9lev\u00e9e d\u2019impuret\u00e9s dans le GCC, la blancheur du produit est g\u00e9n\u00e9ralement de 89%\u201393%, avec quelques produits atteignant jusqu\u2019\u00e0 95%\u00a0;<br>Les produits PCC ont une puret\u00e9 plus \u00e9lev\u00e9e, leur blancheur est donc g\u00e9n\u00e9ralement de 92%\u201395%, certains produits atteignant 96%\u201397%.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"750\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-Carbonate-Powder.webp\" alt=\"\" class=\"wp-image-15140\" style=\"width:769px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-Carbonate-Powder.webp 750w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-Carbonate-Powder-300x300.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-Carbonate-Powder-100x100.webp 100w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-Carbonate-Powder-12x12.webp 12w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-Carbonate-Powder-600x600.webp 600w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\">05 Teneur en humidit\u00e9<\/h2>\n\n\n\n<p>La teneur en humidit\u00e9 des produits GCC est g\u00e9n\u00e9ralement comprise entre 0,21 TP3T et 0,31 TP3T, ce qui est relativement faible et stable. Certains produits haut de gamme peuvent m\u00eame descendre jusqu&#039;\u00e0 0,11 TP3T\u00a0;<br>Les produits PCC ordinaires ont g\u00e9n\u00e9ralement une teneur en humidit\u00e9 de 0,3% \u00e0 0,8%, qui peut fluctuer et est moins stable.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\">06 Forme des particules<\/h2>\n\n\n\n<p class=\"has-text-align-left\">Les caract\u00e9ristiques de la poudre de GCC sont les suivantes\u00a0: formes de particules irr\u00e9guli\u00e8res, particules anguleuses, surfaces rugueuses, variations granulom\u00e9triques importantes, large distribution granulom\u00e9trique et grosses particules. Le concassage et le raffinage ne modifient pas la forme cristalline du GCC. G\u00e9n\u00e9ralement, le GCC \u00e0 base de calcite est hexagonal, tandis que celui \u00e0 base de marbre est cubique. La forme cristalline est principalement d\u00e9termin\u00e9e par le mat\u00e9riau source. La poudre de PCC pr\u00e9sente des particules de forme r\u00e9guli\u00e8re et peut \u00eatre consid\u00e9r\u00e9e comme monodisperse, avec une distribution granulom\u00e9trique \u00e9troite. Selon la forme des particules, le PCC peut \u00eatre class\u00e9 en forme fusiforme, cubique, aciculaire, en cha\u00eene, sph\u00e9rique, en paillettes et rhombique. <\/p>\n\n\n\n<p class=\"has-text-align-left\">Carbonate de calcium fusiforme : taille moyenne du grand axe de 5 \u00e0 12 \u03bcm, du petit axe de 1 \u00e0 3 \u03bcm. Carbonate de calcium cubique : taille moyenne des particules de 0,02 \u00e0 0,1 \u03bcm. Carbonate de calcium aciculaire : taille moyenne des particules de 0,01 \u00e0 0,1 \u03bcm, avec un rapport d&#039;aspect de 5 \u00e0 100. Carbonate de calcium en cha\u00eene : taille moyenne des particules de 0,01 \u00e0 0,1 \u03bcm, avec un rapport d&#039;aspect de 10 \u00e0 50. Carbonate de calcium sph\u00e9rique : taille moyenne des particules de 0,03 \u00e0 0,05 \u03bcm. Carbonate de calcium en paillettes : taille moyenne des particules de 1 \u00e0 3 \u03bcm.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-carbonate-2-1024x683.webp\" alt=\"\" class=\"wp-image-15142\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-carbonate-2-1024x683.webp 1024w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-carbonate-2-300x200.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-carbonate-2-768x512.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-carbonate-2-1536x1024.webp 1536w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-carbonate-2-18x12.webp 18w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-carbonate-2-600x400.webp 600w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/Calcium-carbonate-2.webp 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\">07 Go\u00fbt<\/h2>\n\n\n\n<p>Le PCC a un go\u00fbt de citron vert d\u00fb \u00e0 une r\u00e9action incompl\u00e8te de l&#039;oxyde de calcium. Utilis\u00e9 comme agent de remplissage dans des aliments comme les biscuits, il peut produire un go\u00fbt \u00e9touffant ou irritant.<br>Le GCC, en revanche, n\u2019a pas ce go\u00fbt. <\/p>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\">08 Taille des particules<\/h2>\n\n\n\n<p>La granulom\u00e9trie des produits GCC varie de 0,5 \u00e0 45 \u03bcm. En fonction de la granulom\u00e9trie moyenne (d), la classification est la suivante\u00a0:<br>\u2022 Carbonate de calcium grossi\u00e8rement broy\u00e9 : d &gt; 3 \u03bcm &nbsp;<br>\u2022 Carbonate de calcium finement broy\u00e9 : d = 1\u20133 \u03bcm &nbsp;<br>\u2022 Carbonate de calcium ultrafin : d = 0,5\u20131 \u03bcm<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>09 Volume de s\u00e9dimentation<\/strong><\/h2>\n\n\n\n<p>Le volume de s\u00e9dimentation d\u00e9signe le volume d&#039;une unit\u00e9 de masse de carbonate de calcium. La m\u00e9thode consiste \u00e0 agiter le m\u00e9lange dans 100 ml d&#039;eau et \u00e0 le laisser reposer pendant 3 heures.<br>Un volume de s\u00e9dimentation plus important indique une taille de particules plus petite, une densit\u00e9 plus faible et une qualit\u00e9 de produit sup\u00e9rieure.<\/p>\n\n\n\n<p>CCG : <strong>1,1\u20131,4 mL\/g<\/strong><\/p>\n\n\n\n<p>PCC : <strong>2,4\u20132,8 mL\/g<\/strong><\/p>\n\n\n\n<p>Nano PCC : <strong>3,0\u20134,0 mL\/g<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\">Poudre \u00e9pique<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"397\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/image-6.png\" alt=\"\" class=\"wp-image-15144\" style=\"width:772px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/image-6.png 600w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/image-6-300x199.png 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/05\/image-6-18x12.png 18w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<p>Merci d&#039;avoir lu cet article sur les diff\u00e9rences entre le GCC et le PCC pr\u00e9cipit\u00e9. En tant que leader dans le domaine des technologies des poudres, <a href=\"https:\/\/www.epicmicron.com\/fr\/products\/\">Poudre \u00e9pique<\/a> Machinery fournit des broyeurs \u00e0 jet efficaces et innovants ainsi que des \u00e9quipements connexes \u00e0 des clients du monde entier. <\/p>\n\n\n\n<p>Que vous cherchiez \u00e0 am\u00e9liorer les performances de vos produits ou \u00e0 optimiser vos co\u00fbts de production, nous vous proposons les solutions les plus adapt\u00e9es \u00e0 vos besoins. <\/p>\n\n\n\n<p>If you have any questions about the production and application of calcium carbonate powders, please feel free to contact us.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Broyeur \u00e0 boulets de carbonate de calcium avec syst\u00e8me de classification \u2014 EPIC\" width=\"500\" height=\"281\" 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