Anyang - Calcium Silicon (CaSi)

The Smelting Method of CaSi Alloy

The smelting method of silicon-calcium alloy includes the steps of material preparation, batching, smelting, and furnace release, and is characterized in that the raw materials include limestone, quartz stone, fluorite, soda ash, and coke powder, and the ratio (percentage by weight) is 60:30:6 : 1: 3, the raw materials are crushed together and put into the furnace at one time. Melting method of calcium-silicon alloy. This melting method includes four aspects: 1. Raw material selection 2. Ingredients 3. Melting 4. Baking process.

1. Selection of raw materials. The raw materials include limestone, quartz stone, fluorite, soda ash, and coke powder. When selecting these five raw materials, the calcium content of limestone should reach more than 94% calcium, and the silicon content of quartz stone should reach more than 97%. There are no special requirements for fluorite, soda ash, and Coke powder.
2. The unit of ingredients is kilograms, and the method of ingredients is a percentage. Take 100 kilograms of raw materials as an example. After completing the above ingredient ratio, put it into an ordinary stirring mixer and stir for 1.5 hours before use. Grind the stirred raw materials into a powder with a particle size of 80-200 mesh with an ordinary pulverizer for use.
3. For smelting, put the raw materials with a particle size of 80-200 meshes into the furnace and the furnace mouth is full, and then raise the furnace temperature from 800°C for about 0.5 hours to 1200°C for about 0.5 hours and then rise to 1400°C. When the furnace temperature is 1400°C Melt for 1.5 hours.
4. Out of the furnace, pour the calcium silicide liquid into the steel mold by tilting the intermediate frequency electric furnace.

Ferro Silicon Calcium Manufacturers of Anyang Lishi Industrial

Anyang Lishi Industrial Co., Ltd. is a professional manufacturer of silicon calcium. We have high-quality product quality, strict production management, and scientific detection methods. We can also accept customized products according to different requirements. Welcome to contact us for more information about CaSi.

1. Calcium silicon has a strong deoxidation capacity, deoxidation products are easy to float and easy to discharge.
2. Ca-Si alloy can improve the performance of steel to improve plasticity of steel, impact toughness, and mobility.
3. Calcium silicon alloy is used to control the shape, size, and distribution of oxide and sulfide inclusions improving fluidity, machinability, ductility, and impact properties of the final product.
4. Silicon calcium alloy has chalking resistance.
5. CaSi is not easily deliquescent.

1. Because calcium has a strong affinity with oxygen, sulfur, hydrogen, nitrogen, and carbon in molten steel, silicon-calcium alloy is mainly used for deoxidation, degassing, and fixing sulfur in molten steel.
2. Calcium silicon has a strong exothermic effect after being added to molten steel. Calcium turns into calcium vapor in molten steel, which has a stirring effect on molten steel and is beneficial to the floating of non-metallic inclusions. After the silicon-calcium alloy is deoxidized, non-metallic inclusions with larger particles and easy to float are produced.
3. The shape and properties of non-metallic inclusions are also changed at the same time. Therefore, silicon calcium alloy is used to produce clean steel, high-quality steel with low oxygen and sulfur content, and special-performance steel with extremely low oxygen and sulfur content.
4. The addition of silicon-calcium alloy can eliminate the nodulation of the steel with aluminum as the final deoxidizer at the ladle nozzle, and the clogging of the nozzle of the tundish for continuous casting and ironmaking. In the refining technology outside the furnace of steel, silicon-calcium powder or core wire is used for deoxidation and desulfurization to reduce the content of oxygen and sulfur in steel to a very low level; it can also control the form of sulfide in steel and improve the utilization rate of calcium.
5. In the production of cast iron, in addition to deoxidation and purification, calcium silicon also plays an inoculating role, which helps to form fine-grained or spherical graphite; makes the graphite in gray cast iron evenly distributed, reduces the whitening tendency; and can increase silicon, desulfurization, and improve the quality of cast iron.