Electrode paste is a conductive material used in electric furnaces such as ferroalloy furnaces and calcium carbide furnaces. Electrode paste is also called self-baking electrode. It relies on the heat in the submerged arc furnace to complete the baking. Therefore, the key to the use of electrode paste is to match the electrode consumption rate with the baking rate. As the technology of submerged arc furnaces develops gradually towards large-scale and closed directions, the electrode has reduced the amount of conductive heat and radiant heat obtained by the open furnace type in the past to only conductive heat during the baking process. Therefore, the heat obtained by the electrode from the furnace is greatly reduced, which requires improving the sintering performance of the electrode paste to make up for this deficiency.

Material composition:

Aggregate: 75-80% electric calcined coal-Only a few electric calcined coals are suitable for the production of high-quality electrode paste-Requires strict production process control and quality control

Pitch: 20-25% coal tar

Coal tar is a common binder in the production of carbon products

Adhesion is an important indicator

Pitch softening point (ring and ball method):

Small piece paste 65-90℃