Chinese language production of silicon metallic (silicon content is 98.5%), the manufacturing of unique metallurgical silicon, chemical metallic silicon (silicon content is ninety nine.Eighty five%) because the mid-nineties to develop, in recent times, the manufacturing and exports of chemical silicon in china grew rapidly.

Chemical silicon is the production of silicone and polysilicon for silicon metallic. From a worldwide perspective, the consumption of metallurgical silicon almost use in chemical silicon consumption, however with the steady improvement of science and expertise, the chemistry of silicon used in the sector of natural silicon and semiconductor production is proceed to broaden, and is broadly used in the manufacturing of organosilicon monomer and polymer silicone oil, silicone rubber, silicone resin buildings corrosion, waterproofing agents, they have a excessive temperature, electrically best edge, resistance to radiation, water and other distinctive properties. Electrical, aerospace, equipment, chemicals, pharmaceuticals, defense, construction section. More than 95% of the built-in circuit core is product of semiconductor silicon, semiconductor is a pillar of the contemporary information trade. “Information superhighway” in a lot of functions in the fiber-optic cable fiber optics, silicon metal for the manufacturing of raw supplies. Chemistry of silicon broadly used as a high-tech fields, and an important fundamental industries, consumption progress is stabilizing.

The metallic powder supplier use quartz rock as raw materials, low-ash carbonaceous material as reductant to supply chemical steel silicon. Electric furnace produce chemical silicon, the raw materials mainly silica and carbon materials. Carbon raw materials again petroleum coke high quality anthracite or charcoal, will also be combined with a component, to increase the charge resistance. Raw supplies require necessary purity, good response, so as to achieve the product specs; decreasing agent has a unique reaction, with a purpose to have an sufficient response with quartz; furnace burden with completely different elements, and with completely different granularity, in order to by means of the sufficient coordination make the electric furnace with good effect.

The means of silicon oxide mineral smelting metallic silicon is a no slag process, chemical silicon smelting is thru stringent choice of silica, not only the content material of impurities is less, but in addition requires a high mechanical power, and sufficient thermal stability, an acceptable particle size composition. Chemical silicon smelting is healthier to decide on silica. The pure type of silicon oxide or exist in unbiased quartz minerals, or is almost wholly into the rock by the silicon oxide product – silica, or silica morphology sandstone. Manufacturing of chemical silicon containing impurities in the silicon oxide mineral and adhesive materials within the smelting process and some completely restored, and some elements are restored, some compound form entering the product silicon or born slag. This isn’t only increases energy consumption, decrease product high quality, cause difficulties to the smelting course of.

Silica into the furnace is required to have a sure particle size. Silica particle size is a crucial strategy of smelting. Silica appropriate particle size affected by silica types, furnace capacity, maneuvering situations, as nicely because the reducing agent and the particle dimension and other components, it is determined to the particular circumstances of smelting. Carbonaceous decreasing agent, the principle decreasing agent of chemical silicon smelting, petroleum coke, bituminous coal, charcoal. In order to increase the burden of the resistivity and increase the chemical activity, also with fuel coal, silica naphthalene, blue, charcoal, semi-coke, low temperature coke, items of wood. In the chemical components of the carbonaceous lowering agent, mainly should be thought of fastened carbon, ash, volatile matter and moisture. Common requirements for fastened carbon, reduce the reductant complete required, thus less ash into the impurities, a corresponding discount in the amount of slag, diminished energy consumption, decreased chemical silicon impurity content. The resistivity of the carbonaceous reducing agent to be giant, the porosity to be high. The furnace burden resistivity relies upon primarily on the carbonaceous reductant. The upper carbonaceous reductant resistivity, the better chemical exercise, and the high restoration rate of the silicon power.