Vacuum furnace production process can be divided into two broad categories

Vacuum furnace production process can be divided into two broad categories

Vacuum furnace production process can be divided into two broad categories: electrolytic method and thermal reduction process, the former USES the vacuum furnace chloride as raw material, the latter using dolomite ore as raw material, etc. Using electrolytic process conditions is the place where power rich and low price. At present only in qinghai and vacuum furnace factory using electrolysis refining vacuum furnace. Under the influence of raw materials, and other factors, our country most of the vacuum furnace factory adopts silicon thermal vacuum furnace smelting reduction method. The method using ferrosilicon as reducing agent, this method is compared with the other vacuum furnace smelting process, the technological process is simpler, less infrastructure investment, factory fast; The production process does not produce harmful gases, slag (2 ca0 si02) for production of cement or fertilizer raw materials; Silicon metal vacuum furnace thermal vacuum furnace smelting process of high purity, large economic benefit. But the size of the reduction pot was numerically simulated small, single canned capacity is low, productivity is low, the thermal efficiency is not high, continuous production, labor intensity is big. Tank outside the solid, liquid or gaseous fuel heating, smoke take away a lot of heat, not only greatly reduces the heat utilization rate, and incomplete combustion of smoke caused serious pollution to the environment.