Electrode pastes are divided into standard pastes and sealed pastes due to their different uses. The former is mostly used in semi-closed submerged arc furnaces; the latter is often used in closed electric furnaces and large-capacity semi-closed electric furnaces due to its low roasting temperature and easy sintering.
The solid material of the standard paste is mostly anthracite and metallurgical coke, while the solid material in the closed paste is mixed with graphite and petroleum coke in large quantities. The binder in the standard paste is mostly medium temperature pitch, and the binder in the closed paste uses a lot of tar while also using more graphite chips. Special airtight, favored by submerged arc furnace smelting ferronickel production enterprises
The number of electrode pastes, tar and graphite chips, has been significantly increased. The high prices of crushed graphite and tar are the main reasons for the high prices of airtight pastes, especially the high prices of super dense pastes.
