{"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":"cathode-block","status":"publish","type":"product","link":"https:\/\/jinsuncarbon.com\/fa\/product\/cathode-block\/","title":{"rendered":"Cathode Block"},"content":{"rendered":"

What is cathode block?<\/span><\/h2>\n

Cathode block is essential as negative electrodes in the electrolysis process of aluminum from alumina. It help improve the efficiency of aluminum smelting, which consumes a lot of electricity. So it is the central part of the cathode structure of the aluminum electrolytic cell. <\/span><\/p>\n

So it acts as a cathode conductor in the aluminum electrolysis production process. It exists as the lining material of the <\/span>electroly<\/span><\/a>sis<\/a> cell container. <\/span>With the rapidly increasing demand for aluminum globally, cathode blocks play an essential role in the industry.<\/p>\n

Applications<\/h2>\n

The primary function of the cathode carbon block is as the lining<\/a> material of the electrolysis cell and for the conduction of electric current.<\/p>\n

At the same time, it must withstand the erosion of high-temperature cryolite melt during the aluminum electrolysis process.<\/p>\n

There is also the electrochemical action of high-temperature slag in the electrolysis process.<\/p>\n

Therefore, its quality plays a vital role in the operation of aluminum electrolytic cells.<\/p>\n

The grade directly affects the service life of the electrolytic cell, especially in terms of sodium corrosion resistance, thermal expansion rate, and resistivity.<\/p>\n

Improving its quality reduces the power consumption in production and is of great significance to prolonging the service life of the electrolyzer.<\/p>\n

The main cause of damage to it of an aluminum electrolytic cell<\/a> is that the infiltration of sodium causes the expansion of the carbon block, and the infiltration of the molten electrolyte increases its thermal expansion coefficient.<\/p>\n

 <\/p>\n

\"Cathode\u00a0\"Cathode<\/p>\n

 <\/p>\n

Characteristics<\/span><\/h2>\n

It has low resistance and good conductivity, so its voltage drop is small, which can reduce the power consumption of electrolytic production. <\/span><\/p>\n

It has specific mechanical strength. During <\/span>aluminum electrolysis<\/span><\/a>, the volume of the cathode block expands, resulting in considerable expansion <\/span><\/p>\n

stress and high mechanical strength, which will reduce the damage rate. <\/span><\/p>\n

The low porosity of it does not break down quickly when the electrolyte content permeating into it increases. <\/span><\/p>\n

The ash content is small, so it will not increase the specific resistance and affect the conductivity. <\/span><\/p>\n

The damage coefficient of it is small, which can prolong its service life.<\/span><\/p>\n

 <\/p>\n

\u00a0Properties of cathode block<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PROPERTIES<\/td>\nUNIT<\/td>\namorphous carbon<\/td>\nsemi-graphite<\/td>\nsemi-graphitized<\/td>\ngraphitization<\/td>\n<\/tr>\n
Real density<\/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
Apparent density<\/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
Total porosity<\/td>\n%<\/td>\n18~25<\/td>\n20~25<\/td>\n15~30<\/td>\n25<\/td>\n<\/tr>\n
Open porosity<\/td>\n%<\/td>\n15~18<\/td>\n15~20<\/td>\n15~20<\/td>\n20~24<\/td>\n<\/tr>\n
Electrical Resistance<\/td>\n\u03bc\u03a9\u00b7m<\/td>\n30~50<\/td>\n15~30<\/td>\n12~18<\/td>\n8~14<\/td>\n<\/tr>\n
Thermal conductivety<\/td>\nW\/mk<\/td>\n8~15<\/td>\n30~45<\/td>\n32<\/td>\n80~120<\/td>\n<\/tr>\n
Compressive strength<\/td>\nMPa<\/td>\n25~30<\/td>\n25~30<\/td>\n20~25<\/td>\n15<\/td>\n<\/tr>\n
Bending strength<\/td>\nGPa<\/td>\n6~10<\/td>\n10~15<\/td>\n6~10<\/td>\n10~15<\/td>\n<\/tr>\n
Rapport test<\/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
Ash content<\/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":"

Cathode blocks are used for the masonry lining of aluminum electrolytic cells. As a positive electrode conductive carbon material, it has the characteristics of high-temperature resistance, molten salt corrosion resistance, and good conductivity. There are many types, including ordinary carbon cathode block, semi-graphite carbon block, high-graphitic carbon block, and graphitized cathode block. The current specifications are 550mm\u00d7900mm\u00d73600mm and 650mm\u00d7700mm\u00d73600mm and above.<\/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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