Silicon iron powder, like silicon iron, requires strict control over the quality of raw materials in order to ensure quality compliance. Next, we will explain the quality requirements of raw materials for ferrosilicon powder:
1. The surface of silica should not contain impurities such as mountain skin stones, weathered stones, sand, etc; The particle size should be between 80-140mm;
2. Orchid charcoal, with a fixed carbon content greater than or equal to 82%, a particle size of 8-18mm, a moisture content of less than or equal to 16%, a sieve size of less than or equal to 5%, a volatile content of less than or equal to 8%, and an ash content of less than or equal to 8%;
3. Electrode paste, ash content less than or equal to 6%, volatile matter between 11.2 and 12.5 in summer, and 11 to 12.3 in winter. The appearance quality of the electrode paste should be qualified, and the cross-section should not contain impurities or water droplets;
4. Pellet ore, the water content in pellet ore should be less than or equal to 0.8%, and the iron content should be greater than or equal to 60%. The particle size of pellets should be 8-16mm, and the compressive strength should be greater than or equal to 2500N.
The above are some suggestions!