pvc-carbon paste electrode
pvc-carbon paste electrode
Introduction and quality index of electrode paste Introduction and quality index of electrode paste
Electrode paste is used as a consumable conductive material for the production of calcium carbide and ferroalloy in a submerged electric furnace. The electrode paste is a self-baking electrode calcined by a submerged electric furnace heat source. The so-called self-baking electrode is to fill the metal shell with electrode paste. Under the action of the high temperature of the furnace and the heat generated when the current passes through the electrode, the electrode paste is baked to make it a conductive electrode. The allowable working current density of self-baking electrodes made of electrode paste is low, generally 3～6A/cm². Compared with the carbon electrode, the raw material requirement is not high, the manufacturing process is simple, and the production cost is low. Generally, the electrode paste used in small calcium carbide furnaces or ferroalloy furnaces can be metallurgical coke or pitch coke, and anthracite and metallurgical coke should be used for large and medium-sized electric furnaces. Adding broken graphite or graphitized metallurgical coke is beneficial to improve the thermal conductivity and electrical conductivity of the electrode paste. The amount of binder must be appropriate. If the amount is too much, the sintering speed of the electrode paste will not keep up with the consumption needs, resulting in soft fracture, and after sintering, the porosity is high, the strength is low, and it is easy to hard fracture. If the amount is too small, the sintering speed is too fast, and the strength after firing is low, which will also cause hard fracture. my country’s metallurgical industry’s standards for the quality of electrode pastes were formulated in the 1990s. The electrode pastes are divided into sealed pastes, standard electrode pastes and chemical electrode pastes. The relevant quality indicators are shown in Table 1-3.
[Electrode paste, many people choose CGM carbon] CGM was established in 1992 and has developed into a large-scale carbon production enterprise with an annual output of 200,000 tons of electrode paste and 250,000 tons of forged coke. In the development process of CGM Carbon, we have experienced many difficulties and detours. However, with the basic concept of honest management, CGM Carbon has grown stronger. CGM carbon products are not only sold domestically, but also exported to Indonesia, foreign countries and other countries, and are recognized and praised by the international market.
[Electrode paste, why we do it better] There are 500 electrode paste manufacturers nationwide, and there are more than 100 manufacturers with a scale of more than 10,000 tons. In so many electrode paste production plants, why is CGM carbon in the production scale? Do better in terms of word of mouth. This starts with the development process of CGM Carbon. CGM Carbon was established in 1992 and was originally a carbon enterprise with petroleum coke calcination as its main business. In 2006, the CGM carbon electrode paste production line was put into operation. The production of electrode paste requires heat to soften and shape the raw materials. The general electrode paste factory needs a gas generator in this process, and in time, it also needs more expensive natural gas after coal is changed to gas. However, because our calcined coke production line can release a lot of spare heat, and this heat is just used by the electrode paste production line. Therefore, compared to more general electrode paste manufacturers, we have already saved a lot of costs in terms of heat generation.