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High Quality Calcium Silicon Alloy for Steelmaking
Calcium Silicon is compound alloy which is composed of silicon, calcium and ferro. It is an ideal compound deoxidizer and desulfurizer which can be used in the production of many kinds of steel such as rail steel, low carbon steel, stainless steel and other special alloy like Ni base alloy and titanium base alloy. CaSi alloy also can be applied as the heatraiser in convertor steelmaking workshop and as the inoculant or additive in producing cast iron and nodular cast iron.
Specification
| Grade | Ca | Si | C | Al | S | P | O | Ca+Si |
| Ca31Si60 | 31%min | 58-65% | 0.5%max | 1.4%max | 0.05%max | 0.04%max | 2.5%max | 90%min |
| Ca28Si55 | 28%min | 58-65% | 0.5%max | 1.4%max | 0.05%max | 0.04%max | 2.5%max | 90%min |
Application
The main components of silicon calcium alloy are silicon and calcium, and different amounts of impurities such as Fe, Al, C, S, P etc. Calcium has a strong affinity with oxygen, sulfur, hydrogen, nitrogen and carbon in molten steel. So, silicon calcium alloys are usually used as a deoxidizer and desulfurizer.
In addition, silicon calcium is added to molten steel to produce a strong exothermic effect, which is beneficial to maintain the temperature of molten steel. The calcium vapor produces a stirring effect on the molten steel, which is beneficial to the floating of non-metallic slag.
In the production of cast iron, calcium silicon is more effective in improving the properties of cast iron than ferrosilicon. Silicon-calcium alloy is not only an effective inoculant to promote the formation of spheroidal graphite, but also has the effects of deoxidation, desulfurization, denitrification and silicon increase.
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