Products Description
Ferro Silicon 70 and industrial silicon are silicon-based alloys in the ferroalloy industry, which are widely used in steel making, casting, Non-ferrous metal and other industrial production. 70 ferrosilicon alloy and industrial silicon are produced by using silica as raw material, mixed with carbonaceous reductant after washing and added to the ore furnace, and then reduced to ferrosilicon alloy and metallic silicon under high temperature.
In the production of 70 silicon ferroalloy and industrial silicon, in order to ensure the permeability of the furnace charge, it is required that the furnace charge be within a certain particle size range. During the cleaning process of silicon ore, silicon ore with a particle size less than 20 will be screened to avoid entering the ore heating furnace and affecting the permeability of the furnace material.
Products Parameters
| Element | Chemical Composition (%) |
|---|---|
| Si | 72.0 |
| Al | ≤ 2.0 |
| C | ≤ 0.2 |
| S | ≤ 0.02 |
| P | ≤ 0.04 |
Specification granularity: natural block, 10-100mm, 10-60mm, 3-10mm, 1-3mm, 0-1mm or customized according to customer requirements.
Packaging: Ton bag packaging (1000kg/bag) or customized according to customer requirements.
production method of Products
(1) Firstly, add a binder with a mass of 2-12% of micro silica powder and 3-15% of water with a mass of micro silica powder to the micro silica powder and small particle silica, mix them evenly, and then press them into pellets under a pressure of 5-30t;
(2) In a reducing atmosphere, after drying the pellets obtained in step (1) at a temperature of 100-300 ° C, the dried pellets and carbon reducing agent with a mass ratio of (2.4~3.0): (1.0~2.0) are loaded into a metallurgical furnace with a surface temperature of 800-1200 ° C. The pellets and carbon reducing agent complete pre roasting during the descent process from the metallurgical furnace mouth to the high-temperature area, Then, the pellets and carbon reducing agents are smelted for 0.5-2h in the high-temperature area of the metallurgical furnace at a temperature of 1800-2500 ° C. During the smelting process, steel chips, rolled iron sheets, and iron concentrate pellets containing iron are added to obtain a silicon iron alloy melt;
(3) The 70 silicon iron alloy melt obtained in step (2) can be refined outside the furnace to produce 70 silicon iron alloy.
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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