The Smelting Methods, Functions and the Demand for Calcium Silicon Alloys in the Market

Calcium silicon alloy is made by smelting ferrosilicon and some calcium-containing ore at high temperature in an electric furnace. The commonly used calcium-containing ore is lime. The smelting of calcium silicon alloy is the same as the smelting of silicon barium. There are two processes. The first is a one-step smelting method that smelts coke, silica, steel scraps and lime at high temperatures in an electric furnace to obtain the desired calcium silicon alloy. The second is a two-step smelting method that produces high-carbon ferrosilicon in an electric furnace. , and then use high-carbon ferrosilicon and lime to obtain the desired calcium-silicon alloy. The calcium content of the calcium-silicon alloy smelted by the two-step method is around 20, while the calcium content commonly used in our country is 28-30, so the calcium content commonly used in our country is One-step smelting method.

Calcium silicon alloy is used as a deoxidizer and desulfurizer in steelmaking. It is usually used in refining outside the furnace. Calcium has a high affinity at high temperatures. Calcium can also purify molten steel. Improve the flow performance of molten steel, and the deoxidation product cao is easy to float and be discharged. The calcium element in the steel can change the properties of the steel and improve the plasticity and toughness of the steel. (The plasticity of steel refers to the force exerted on the steel, the steel will Permanent deformation, on the contrary, when an external force is applied to the steel, the steel deforms. After the force is removed, the steel returns to its original shape. This is called elasticity. The toughness of steel can be explained in a simple sentence: it is easy to break (low toughness, high brittleness), because calcium is emitted after melting Calcium silicon alloy can also be used as an inoculant for cast iron and an additive in the production of ductile iron. Now, it can be made into alloy powder and rolled into steel strips to make calcium silicate cored wire.

There are many national standards for calcium silicon alloys, but the commonly used indicators are 2855 and 3060. In addition to indicators, the price of calcium silicon alloys is also affected by particle size and packaging. The particle size is also divided into powder, granules, standard blocks, and natural blocks. Several kinds. Packaging is also divided into ton packaging and small bag packaging, which all affect its price. In terms of production costs, calcium silicon alloy also includes raw material costs, electricity costs, and labor costs, as well as later processing loss management costs. Electricity still accounts for the bulk of costs.

Calcium silicon alloy is still in high demand in the market. Calcium silicon alloy is used in the production of stainless steel, high-quality special steel and special performance steel in steel plants. Its main production area is in Qugou, Anyang, which is also a ferroalloy base, and its product reputation has been praised by many manufacturers. Welcome everyone to come to Qugou for a visit and inspection.

The precautions for calcium silicate alloy are still during storage and transportation. When calcium silicate comes into contact with water, it will emit a lot of heat and has similar properties to lime. Therefore, regardless of storage or transportation, attention must be paid to moisture and waterproofing.


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