Wettable cathode paste and its using method

Abstract

The invention relates to a cathode paste for slit connection between the moistening cathode blocks of aluminum cell and method of use, wherein the cathode paste comprises binder with 1:4-5 weight ratio and dry matter with 8mm particle size, the composition by weigh percent of the dry matter is, calcinations anthracite coal 10%-60%, calcinations petroleum coke 5%-15%, metallurgy coke 5%-30%, TiB2 15%-60%, coal pitch 20%-80% containing 5%-20% wt. percent of artificial graphite or native graphite, coal tar 5%-80%, anthracene oil 5%-40% as binder.

Description

technical field

[0001] The invention relates to a wettable cathode paste and a use method thereof, relating to a cathode paste used for connecting gaps between wettable cathode carbon blocks of an aluminum electrolytic cell and forming a wettable cathode whole at the bottom of the aluminum electrolytic cell. Background technique

[0002] At present, the cathode carbon blocks used in aluminum electrolytic cells and the connecting paste between cathode carbon blocks are all produced from calcined anthracite, calcined petroleum coke, metallurgical coke, coal tar pitch, coal tar, and anthracene oil. These products are used in the electrolytic cell, because they cannot be well wetted with the aluminum liquid, so they often contact with the electrolyte and are corroded by the electrolyte, which affects the production operation of the electrolytic cell and affects the life of the electrolytic cell. To this end, people have developed a wettable cathode carbon block, which is made of...