{"id":2145,"date":"2023-01-30T09:28:37","date_gmt":"2023-01-30T09:28:37","guid":{"rendered":"https:\/\/jinsuncarbon.com\/?post_type=product&p=2145"},"modified":"2024-11-01T01:09:33","modified_gmt":"2024-11-01T01:09:33","slug":"bloc-cathodique","status":"publish","type":"product","link":"https:\/\/jinsuncarbon.com\/fr\/produit-2\/bloc-cathodique\/","title":{"rendered":"Bloc cathodique"},"content":{"rendered":"

Qu'est-ce que le bloc cathodique ?<\/span><\/h2>\n

Le bloc cathodique est essentiel en tant qu'\u00e9lectrodes n\u00e9gatives dans le processus d'\u00e9lectrolyse de l'aluminium \u00e0 partir de l'alumine. Il contribue \u00e0 am\u00e9liorer l'efficacit\u00e9 de la fusion de l'aluminium, qui consomme beaucoup d'\u00e9lectricit\u00e9. Il s'agit donc de la partie centrale de la structure de la cathode de la cellule d'\u00e9lectrolyse de l'aluminium. <\/span><\/p>\n

Il sert donc de conducteur cathodique dans le processus de production de l'\u00e9lectrolyse de l'aluminium. Il existe en tant que mat\u00e9riau de rev\u00eatement du <\/span>\u00e9lectrolyte<\/span><\/a>sis<\/a> le conteneur cellulaire. <\/span>Avec l'augmentation rapide de la demande d'aluminium dans le monde, les blocs cathodiques jouent un r\u00f4le essentiel dans l'industrie.<\/p>\n

Applications<\/h2>\n

La fonction premi\u00e8re du bloc de carbone de la cathode est de servir de doublure<\/a> mat\u00e9riau de la cellule d'\u00e9lectrolyse et pour la conduction du courant \u00e9lectrique.<\/p>\n

En m\u00eame temps, il doit r\u00e9sister \u00e0 l'\u00e9rosion de la cryolithe fondue \u00e0 haute temp\u00e9rature pendant le processus d'\u00e9lectrolyse de l'aluminium.<\/p>\n

Il y a \u00e9galement l'action \u00e9lectrochimique des scories \u00e0 haute temp\u00e9rature dans le processus d'\u00e9lectrolyse.<\/p>\n

Par cons\u00e9quent, sa qualit\u00e9 joue un r\u00f4le vital dans le fonctionnement des cellules \u00e9lectrolytiques en aluminium.<\/p>\n

La qualit\u00e9 affecte directement la dur\u00e9e de vie de la cellule \u00e9lectrolytique, notamment en termes de r\u00e9sistance \u00e0 la corrosion du sodium, de taux de dilatation thermique et de r\u00e9sistivit\u00e9.<\/p>\n

L'am\u00e9lioration de sa qualit\u00e9 r\u00e9duit la consommation d'\u00e9nergie dans la production et est tr\u00e8s importante pour prolonger la dur\u00e9e de vie de l'\u00e9lectrolyseur.<\/p>\n

La principale cause d'endommagement d'un \u00e9lectrolyte en aluminium cellule<\/a> est que l'infiltration de sodium provoque l'expansion du bloc de carbone et que l'infiltration de l'\u00e9lectrolyte fondu augmente son coefficient d'expansion thermique.<\/p>\n

 <\/p>\n

\"Blocs\u00a0\"Bloc<\/p>\n

 <\/p>\n

Caract\u00e9ristiques<\/span><\/h2>\n

Il pr\u00e9sente une faible r\u00e9sistance et une bonne conductivit\u00e9, de sorte que sa chute de tension est faible, ce qui permet de r\u00e9duire la consommation d'\u00e9nergie de la production \u00e9lectrolytique. <\/span><\/p>\n

Il poss\u00e8de une r\u00e9sistance m\u00e9canique sp\u00e9cifique. Pendant <\/span>\u00e9lectrolyse de l'aluminium<\/span><\/a>le volume du bloc cathodique se dilate, ce qui entra\u00eene une expansion consid\u00e9rable <\/span><\/p>\n

et une r\u00e9sistance m\u00e9canique \u00e9lev\u00e9e, ce qui r\u00e9duira le taux d'endommagement. <\/span><\/p>\n

Sa faible porosit\u00e9 ne se d\u00e9grade pas rapidement lorsque la teneur en \u00e9lectrolyte qui l'impr\u00e8gne augmente. <\/span><\/p>\n

La teneur en cendres est faible, de sorte qu'elle n'augmente pas la r\u00e9sistance sp\u00e9cifique et n'affecte pas la conductivit\u00e9. <\/span><\/p>\n

Le coefficient d'endommagement est faible, ce qui permet de prolonger sa dur\u00e9e de vie.<\/span><\/p>\n

 <\/p>\n

\u00a0Propri\u00e9t\u00e9s du bloc cathodique<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PROPRI\u00c9T\u00c9S<\/td>\nUNIT\u00c9<\/td>\ncarbone amorphe<\/td>\nsemi-graphite<\/td>\nsemi-graphi\u00e9<\/td>\ngraphitisation<\/td>\n<\/tr>\n
Densit\u00e9 r\u00e9elle<\/td>\ng\/cm3<\/sup><\/td>\n1.85~1.95<\/td>\n2.05~2.15<\/td>\n2.05~2.18<\/td>\n2.20<\/td>\n<\/tr>\n
Densit\u00e9 apparente<\/td>\ng\/cm3<\/sup><\/td>\n1.50~1.55<\/td>\n1.60~1.70<\/td>\n1.55~1.65<\/td>\n1.6~1.8<\/td>\n<\/tr>\n
Porosit\u00e9 totale<\/td>\n%<\/td>\n18~25<\/td>\n20~25<\/td>\n15~30<\/td>\n25<\/td>\n<\/tr>\n
Porosit\u00e9 ouverte<\/td>\n%<\/td>\n15~18<\/td>\n15~20<\/td>\n15~20<\/td>\n20~24<\/td>\n<\/tr>\n
R\u00e9sistance \u00e9lectrique<\/td>\n\u03bc\u03a9-m<\/td>\n30~50<\/td>\n15~30<\/td>\n12~18<\/td>\n8~14<\/td>\n<\/tr>\n
Conductibilit\u00e9 thermique<\/td>\nW\/mk<\/td>\n8~15<\/td>\n30~45<\/td>\n32<\/td>\n80~120<\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la compression<\/td>\nMPa<\/td>\n25~30<\/td>\n25~30<\/td>\n20~25<\/td>\n15<\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la flexion<\/td>\nGPa<\/td>\n6~10<\/td>\n10~15<\/td>\n6~10<\/td>\n10~15<\/td>\n<\/tr>\n
Test de rapport<\/td>\n%<\/td>\n0.6~1.5<\/td>\n0.3~0.5<\/td>\n0.3~0.5<\/td>\n0.05~0.15<\/td>\n<\/tr>\n
Teneur en cendres<\/td>\n%<\/td>\n3~10<\/td>\n0.1~1.0<\/td>\n<1.5<\/td>\n<0.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Les blocs cathodiques sont utilis\u00e9s pour le rev\u00eatement de ma\u00e7onnerie des cellules \u00e9lectrolytiques en aluminium. En tant que mat\u00e9riau de carbone conducteur de l'\u00e9lectrode positive, il pr\u00e9sente les caract\u00e9ristiques suivantes : r\u00e9sistance aux temp\u00e9ratures \u00e9lev\u00e9es, r\u00e9sistance \u00e0 la corrosion par les sels fondus et bonne conductivit\u00e9. Il en existe de nombreux types, notamment le bloc cathodique en carbone ordinaire, le bloc en carbone semi-graphite, le bloc en carbone hautement graphitique et le bloc cathodique graphit\u00e9. Les sp\u00e9cifications actuelles sont 550mm\u00d7900mm\u00d73600mm et 650mm\u00d7700mm\u00d73600mm et plus.<\/p>","protected":false},"featured_media":2308,"template":"","meta":[],"product_brand":[],"product_cat":[39],"product_tag":[47],"class_list":{"0":"post-2145","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-carbon-products","7":"product_tag-cathode-block","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"yoast_head":"\nCathode Block - Jinsun Carbon<\/title>\n<meta name=\"description\" content=\"Cathode blocks are used for the masonry lining of aluminum electrolytic cells. 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