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Polycrystalline silicon bar crushing system and method

A crushing system and crushing method technology, applied in grain processing, etc., can solve the problems of silicon material surface contamination, single crystal minority carrier lifetime reduction, affecting downstream solar energy lifetime and photoelectric conversion efficiency, etc.

Active Publication Date: 2018-10-16
ASIA SILICON QINGHAI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The traditional method of crushing polysilicon rods requires a lot of manpower and physical strength to crush polysilicon, which has high cost and low efficiency, and cross-contamination such as sweat stains generated when physical strength is consumed and broken is likely to cause contamination on the surface of the polysilicon material and affect product quality; Knocking can easily cause the metal on the surface of polysilicon to increase, and the surface metal of the tungsten carbide cobalt alloy hammer remaining on the surface of the silicon material will increase, and the lifetime of the prepared single crystal minority carrier will be reduced, which will affect the life of downstream solar energy and photoelectric conversion efficiency

Method used

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  • Polycrystalline silicon bar crushing system and method

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Embodiment 1

[0044] Please refer to figure 1 , the present embodiment provides a polysilicon rod crushing system 10, which includes a pre-crushing device 100 for primary crushing of polysilicon rods; used to divide the primary crushed polysilicon rods into rods and the screening of the first piece of material Device 200; the first identification and classification device 300 for distinguishing and classifying the first block; the second identification and classification device 400 for distinguishing and classifying the bar; the bar processing device 500, the bar processing device 500 includes at least four bar collection devices 510, and the bar collection device 510 is connected with a bar packaging device 520 and a crushing device 530; wherein, the pre-crushing device 100 and the screening device 200 pass through the first channel 110 Connection; the screening device 200 is connected with the first identification and classification device 300 through the second channel 310; the screening...

Embodiment 2

[0058] This embodiment provides a method for crushing polysilicon rods. The method for crushing polysilicon rods adopts any one of the above-mentioned polysilicon rod crushing systems 10, including:

[0059] Pre-crushing, placing polycrystalline silicon rods into the pre-crushing device 100 for pre-crushing;

[0060] Screening, the primary crushed polysilicon rods are divided into rods and the first block by the screening device 200;

[0061] First classification, using the first identification and classification device 300 to identify and classify the first block;

[0062] The second classification is to identify and classify the bars through the second identification and classification device 400;

[0063] Bar stock processing, the bar stock is packaged or crushed through the bar stock processing device 500 .

[0064] The polysilicon rod crushing method provided by the present invention includes the polysilicon rod crushing system 10 mentioned above, so it also has the abo...

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Abstract

The invention relates to the field of polycrystalline silicon production, in particular to a polycrystalline silicon bar crushing system and method. According to the provided polycrystalline silicon bar crushing system, polycrystalline silicon bars are subjected to pretreatment, a screening device is used for separating the bars from blocks, the blocks enter a first identifying and classifying device and are distinguished according to different kinds of the blocks; the bars enter a second identifying and classifying device, are distinguished according to different kinds of the bars and enter different bar collection devices of a bar treatment device, and when a user needs the bars, the bars are led into a bar packaging device to be packaged; and when the user needs the blocks, the blocks are led into a crushing device to be crushed. According to the provided polycrystalline silicon bar crushing system, the operation time of operators is saved, pollution caused by manmade operation is avoided, efficiency is improved, and cost is saved. According to the provided polycrystalline silicon bar crushing method, the above polycrystalline silicon bar crushing system is included, and therefore the above beneficial effects are achieved.

Description

technical field [0001] The invention relates to the field of polysilicon production, in particular to a polysilicon rod crushing system and a crushing method. Background technique [0002] Polysilicon is the direct raw material for the production of monocrystalline silicon, and is the electronic information basic material for semiconductor devices such as artificial intelligence, automatic control, information processing, and photoelectric conversion. The higher the purity of polysilicon, the better the electronic performance and the corresponding photoelectric conversion rate. [0003] Polysilicon is the basic material for the production of solar cells and semiconductor components. In the solar-grade silicon material market, the improved Siemens method is currently the mainstream technology, accounting for about 80% of the global polysilicon market share. In recent years, domestic polysilicon enterprises have made a lot of innovations in technology development, resulting i...

Claims

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Application Information

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IPC IPC(8): B02C21/00B02C23/14B02C23/18B02C23/00
CPCB02C21/00B02C23/00B02C23/14B02C23/18
Inventor 蔡延国王生红宗冰王体虎
Owner ASIA SILICON QINGHAI
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