The Smelting Process Of Silicon

Chemical silicon is the manufacturing of silicone products and polysilicon for silicon metallic. From a world perspective, the consumption of metallurgical silicon nearly use in chemical silicon consumption, but with the steady development of science and know-how, the chemistry of silicon utilized in the sector of natural silicon and semiconductor manufacturing 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’ve a excessive temperature, electrically greatest edge, resistance to radiation, water and different unique properties. Electrical, aerospace, machinery, chemicals, pharmaceuticals, protection, construction section. Greater than 95% of the built-in circuit core is made from semiconductor silicon, silicone rubber semiconductor is a pillar of the contemporary info trade. “Info superhighway” in a lot of functions in the fiber-optic cable fiber optics, silicon metal for the manufacturing of uncooked materials. Chemistry of silicon extensively used as a excessive-tech fields, and an vital basic industries, consumption growth is stabilizing.

The metallic powder provider use quartz rock as raw materials, low-ash carbonaceous materials as reductant to provide chemical metal silicon. Electric furnace produce chemical silicon, the uncooked supplies primarily silica and carbon supplies. Carbon uncooked material once more petroleum coke high quality anthracite or charcoal, will also be mixed with a component, to increase the cost resistance. Uncooked materials require crucial purity, good response, in order to achieve the product specifications; decreasing agent has a unique reaction, with the intention to have an enough response with quartz; furnace burden with completely different substances, and with totally different granularity, in order to via the enough coordination make the electric furnace with good impact.

The means of silicon oxide mineral smelting metallic silicon is a no slag course of, chemical silicon smelting is thru stringent selection of silica, not solely the content of impurities is less, but in addition requires a high mechanical power, and adequate thermal stability, an appropriate particle dimension composition. Chemical silicon smelting is best to decide on silica. The pure type of silicon oxide or exist in independent quartz minerals, or is nearly wholly into the rock by the silicon oxide product – silica, or silica morphology sandstone. Production of chemical silicon containing impurities in the silicon oxide mineral and adhesive materials in the smelting process and some utterly restored, and some components are restored, some compound type getting into the product silicon or born slag. This is not solely will increase power consumption, lower product quality, cause difficulties to the smelting process.

Silica into the furnace is required to have a certain particle size. Silica particle dimension is a crucial technique of smelting. Silica suitable particle dimension affected by silica sorts, furnace capacity, maneuvering conditions, as effectively as the lowering agent and the particle size and other factors, it is determined to the particular circumstances of smelting. Carbonaceous reducing agent, the principle lowering agent of chemical silicon smelting, petroleum coke, silicone mold rubber bituminous coal, charcoal. In order to extend the burden of the resistivity and increase the chemical activity, also with gasoline coal, silica naphthalene, blue, charcoal, semi-coke, low temperature coke, pieces of wood. In the chemical components of the carbonaceous decreasing agent, mainly ought to be thought-about fixed carbon, ash, unstable matter and moisture. Common necessities for fixed carbon, scale back the reductant total required, thus much less ash into the impurities, a corresponding discount in the quantity of slag, diminished power consumption, decreased chemical silicon impurity content material. The resistivity of the carbonaceous decreasing agent to be large, the porosity to be high. The furnace burden resistivity depends totally on the carbonaceous reductant. The upper carbonaceous reductant resistivity, the higher chemical activity, and the excessive recovery fee of the silicon power.


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