Calcium silicon contains 22-35% calcium and 60-65% silicon. YB 525-65 specifies that the calcium content shall not be less than 31%, 28%, and 24%, respectively. The Ca content is generally 24-31%, and the Si content is between 55-65%. Mainly used as an inoculant for cast iron. Calcium silicon alloy has strong reducing ability and is also used as a deoxidizer for high-quality steel. Due to the high activity of calcium at steelmaking temperature and its unstable effect, it is advisable to add some slowing agent. As a deoxidizer for steel, Calcium silicon barium alloy, Calcium silicon barium aluminum alloy, or Calcium silicon manganese alloy are commonly used.The chemical composition of calcium silicate blocks is as follows:
|
Grade |
Chemical element % |
|||||
|
Ca |
Si |
C |
AI |
P |
S |
|
|
≥ |
≤ |
|||||
|
Ca30Si60 |
30 |
60 |
1.0 |
2.0 |
0.04 |
0.06 |
|
Ca30Si58 |
30 |
58 |
1.0 |
2.0 |
0.04 |
0.06 |
|
Ca28Si55 |
28 |
55 |
1.0 |
2.4 |
0.04 |
0.06 |
|
Ca25Si50 |
25 |
50 |
1.0 |
2.4 |
0.04 |
0.06 |
