Metallurgy Steelmaking Ca28Si55 Calcium Silicon Alloy Lump
Silicon Calcium Description
Silicon calcium alloy is mainly used for steel-making and cast iron production.The affinity of calcium and silicon with oxygen is very large, and the deoxidation products are easy to float and easy to discharge. So the deoxidizing steel liquid of silicon calcium alloy is pure. When the high quality steel and special alloy are made, the silicon calcium alloy is used as deoxidizer.
Specifications Silicon calcium
| Grade | Chemical Composition (%) |
| Ca | Si | C | Al | P | S | Fe |
| ≥ | ≤ | |
| Ca30Si60 | 30 | 60 | 1.0 | 2.4 | 0.04 | 0.04 | Balance |
| Ca30Si55 | 30 | 55-60 | 1.0 | 2.4 | 0.04 | 0.04 | Balance |
| Ca30Si50 | 30 | 50-55 | 1.0 | 2.4 | 0.04 | 0.04 | Balance |
| Ca28Si55 | 28 | 55-60 | 1.0 | 2.4 | 0.04 | 0.04 | Balance |
| Ca28Si50 | 28 | 50-55 | 1.0 | 2.4 | 0.04 | 0.04 | Balance |
| Ca20Si50 | 20 | 50-55 | 1.0 | 2.4 | 0.04 | 0.04 | Balance |
| Ca10Si40 | 10-15 | 40-45 | 0.5 | 2.0 | 0.05 | 0.05 | 40-45 |
Silicon Calcium Function
Since calcium silicon has a strong affinity with oxygen, sulfur, hydrogen, nitrogen and carbon in steel fluid, silicon calcium alloy is mainly used for deoxidization, degassing and fixation of sulfur in steel fluid. In the outside refining technology of steel, the content of oxygen and sulfur in steel is reduced to very low by desulphurization and desulphurization with silicon-calcium powder or core wire. It can also control the sulfide from in steel and improve the utilization rate of calcium. In the production of cast iron, silicon calcium alloy not only deoxidizes and purifies, but also plays an inoculating role, which is helpful to form fine or globular graphite. The graphite distribution in gray cast iron is uniform and the white tendency is reduced. And can increase silicon, desulfurization, improve the quality of cast iron.
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Packing & Delivery
Packing: 1 ton big bag, 20-25mt in 20' container
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