Chemical silicon is the production of chipboard screws silicone andpolysilicon for silicon metal. From a global perspective, the consumption ofmetallurgical silicon almost use in chemical silicon consumption, but with thecontinuous development of science and technology, the chemistry of silicon usedin the field of organic silicon and semiconductor production is continue tobroaden, and is widely used in the production of organosilicon monomer andpolymer silicone oil, silicone rubber, silicone resin buildings corrosion,waterproofing agents, they have a high temperature, electrically best edge,resistance to radiation, water and other unique properties. Electrical,aerospace, machinery, chemicals, pharmaceuticals, defense, constructionsection. More than 95% of the integrated circuit core is made of semiconductorsilicon, semiconductor is a pillar of the contemporary information industry."Information superhighway" in a large number of applications in thefiber-optic cable fiber optics, silicon metal for the production of rawmaterials. Chemistry of silicon widely used as a high-tech fields, and an importantbasic industries, consumption growth is stabilizing.The metal powder supplier use quartz rock as rawmaterials, low-ash carbonaceous material as reductant to produce chemical metalsilicon. Electric furnace produce chemical silicon, the raw materials mainlysilica and carbon materials. Carbon raw material again petroleum coke qualityanthracite or charcoal, can also be mixed with a part, to increase the chargeresistance.

Raw materials require necessary purity, good response, in order toachieve the product specifications; reducing agent has a different reaction, inorder to have an adequate response with quartz; furnace burden with differentingredients, and with different granularity, in order to through the adequate coordinationmake the electric furnace with good effect.The process of silicon oxide mineralsmelting metallic silicon is a no slag process, chemical silicon smelting isthrough stringent choice of silica, not only the content of impurities is less,but also requires a high mechanical strength, and sufficient thermal stability,a suitable particle size composition. Chemical silicon smelting is better tochoose silica. The natural form of silicon oxide or exist in independent quartzminerals, or is almost wholly into the rock by the silicon oxide product -silica, or silica morphology sandstone. Production of chemical siliconcontaining impurities in the silicon oxide mineral and adhesive material in thesmelting process and some completely restored, and some parts are restored,some compound form entering the product silicon or born slag. This is not onlyincreases energy consumption, lower product quality, cause difficulties to thesmelting process.Silica into the furnace is required to havea certain particle size. Silica particle size is an important process ofsmelting. Silica suitable particle size affected by silica types, furnacecapacity, maneuvering conditions, as well as the reducing agent and theparticle size and other factors, it is determined to the specific conditions ofsmelting.

Carbonaceous reducing agent, the main reducing agent of chemicalsilicon smelting, petroleum coke, bituminous coal, charcoal. In order toincrease the burden of the resistivity and increase the chemical activity, alsowith gas coal, silica naphthalene, blue, charcoal, semi-coke, low temperaturecoke, pieces of wood. In the chemical components of the carbonaceous reducingagent, mainly should be considered fixed carbon, ash, volatile matter andmoisture. General requirements for fixed carbon, reduce the reductant totalrequired, thus less ash into the impurities, a corresponding reduction in theamount of slag, reduced power consumption, reduced chemical silicon impuritycontent. The resistivity of the carbonaceous reducing agent to be large, theporosity to be high. The furnace burden resistivity depends primarily on thecarbonaceous reductant. The higher carbonaceous reductant resistivity, thebetter chemical activity, and the high recovery rate of the silicon power.