Good-effect crude silicon refining device

Abstract

The invention relates to a good-effect crude silicon refining device which comprises a furnace body, a top cover, a fixing plate, a feeding box and a quantifying mechanism, the top cover is arranged at the top of the furnace body, the feeding box is arranged above the top cover, a discharging port is formed in the bottom of the feeding box, a feeding port is formed in the top cover, and the fixingplate is arranged on one side of the top cover; The quantitative mechanism is arranged between the feeding box and the top cover and comprises a driving assembly, a moving assembly and an uncoveringassembly. According to the good-effectcrude silicon refining device, feeding is achieved through the uncovering assembly, then reaction is conducted through heating of the furnace body, and refining of crude silicon is achieved. Compared with an existing crude silicon extraction device, the device achieves automatic quantitative feeding of raw materials and carbon through the quantitative mechanism, manpower is saved, the refining effect is improved, compared with an existing quantitative mechanism, the quantitative mechanism adopts a pure mechanical mechanism, use of electronic elements suchas an electronic scale is avoided, and the stability of the device is improved.

Description

technical field [0001] The invention relates to a crude silicon refining device with good effect. Background technique [0002] Silicon is a chemical element. Its chemical symbol is Si. Silicon is also a very common element. However, it rarely occurs in nature in the form of simple substance, but in the form of complex silicate or silicon dioxide. Widely present in rocks, gravel, and dust. Since silicon is one of the important materials for making semiconductors, refining silicon plays an extremely important role in semiconductor production. [0003] In production, silica is generally reduced to silicon dioxide with charcoal in an electric furnace to obtain crystalline silicon. The reaction between silica and charcoal requires an appropriate ratio. Too little silica and too much charcoal will result in more carbon slag, and too much silica and too much charcoal. Less, it will lead to insufficient silica reaction, making the refining effect poor, and the existing electric f...

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Problems solved by technology

[0003] In production, silica is generally reduced to silicon dioxide with charcoal in an electric furnace to obtain crystalline silicon. The reaction between silica and charcoal requires an appropriate ratio. Too little silica and too much charcoal will result in more carbon slag, and too much silica and too much charcoal. less, it will lead to insufficient silica reaction, making the refining effect poor, and the existing electric furnace generally does not have a weighing function. When adding silica and charcoal, the proportion is difficult to control accurately, resulting in mediocre refining effect.

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