The common method is to mix quartz sand with coke, use the silica and petroleum coke, add wood chips, put it into an electric furnace, heat it to a high temperature of about 2000 °C, and obtain silicon carbide after various chemical processes. To green silicon carbide, add salt.
Brand | component% | |||
SiC | F.C | Fe2O3 | ||
60# | 60 min | 15-20 | 8-12 | 3.5 max |
65# | 65 min | 15-20 | 8-12 | 3.5 max |
70# | 70 min | 12-15 | 8-12 | 3.5 max |
75# | 75 min | 12-15 | 8-12 | 3.5 max |
80# | 80 min | 5-15 | 3.5 max | |
85# | 85 min | 5-15 | 3.5 max | |
90# | 90 min | 2-10 | 1.2 max | |
95# | 95 min | 0.6 max | 1.2 max | |
97# | 97 min | 0.3 max | 1.2 max | |
98# | 98 min | 0.3 max | 0.8 max | |
98.5# | 98.5 min | 0.2 max | 0.6 max |