Products Description
Silicon Calcium is a composite alloy composed of elements silicon, calcium, and iron, and is an ideal composite deoxidizer and desulfurizer. Silicon calcium alloy is used as a calcium additive, deoxidizer, desulfurizer, and modifier for non-metallic inclusions in the steel industry. In the cast iron industry, it is also used as an inoculant and a denaturant.
It is widely used in the production of steel grades such as steel, low-carbon steel, stainless steel, and special alloys such as nickel based alloys and titanium based alloys. And it is suitable as a warming agent for the converter steelmaking workshop, as well as an inoculant for cast iron and an additive in the production of ductile iron.
Products Parameters
| Si (%) | Ca (%) |
| 60-65 | 22-35 |
YB 525-65 stipulates that the calcium content shall not be less than 31%, 28%, and 24%, respectively.
production methods
There are two main production methods for silicon calcium alloys:
1. Mixed feeding method: This is also known as one-step method. In this method, silica, lime, and carbonaceous reducing agents (such as coke, charcoal, bituminous coal, or wood blocks) are mixed evenly according to the calculated ratio, and then added to the electric furnace. Although this method is simple to operate, it has a large amount of slag and a low recovery rate of calcium and silicon.
2. Layered feeding method: This is actually a step-by-step smelting method. Firstly, by increasing the furnace temperature stage and using an electric arc to directly heat the furnace bottom, the accumulated high melting point carbides are destroyed to control the rate of furnace bottom rise. Then, add the required lime and coke or anthracite to the furnace to react with calcium carbide and generate CaSi. Finally, the reaction between silica and CaSi generates a silicon calcium alloy. The success of this method depends on whether a "smelting crucible" can be formed in the furnace, allowing the reaction to take place within this crucible.
In summary, the production methods of silicon calcium alloys vary due to their different uses and processes, but these methods are all achieved using CaC2 as a transition product. Silicon calcium alloy plays an important role in the production of steel and cast iron, used for deoxidation, degassing, sulfur fixation, and improving alloy properties.
ZHENAN INTERNATIOANL CO., LTD
Tell: +8615896822096 (WhatsApp)
Email: info@zaferroalloy.com
Website: www.metal-alloy.com
Address: Huafu Office Building, Anyang, Henan province, China.
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