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Polycrystalline silicon bar crushing device and method

A technology of polycrystalline silicon rods and silicon rods, which is applied in grain processing and other directions, can solve problems such as low efficiency and impurity pollution.

Pending Publication Date: 2020-06-05
JIANGSU ZHONGNENG POLYSILICON TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a simple and effective polycrystalline silicon rod crushing device and system to solve the problems of impurity pollution and low efficiency caused by the existing mechanical crushing and high-pressure hydraulic crushing methods

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  • Polycrystalline silicon bar crushing device and method
  • Polycrystalline silicon bar crushing device and method

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments without creative changes by those skilled in the art belong to the protection scope of the present invention.

[0035] image 3 It is a specific embodiment of the present invention. In this embodiment, the polysilicon rod (19) is preheated to 300°C at a preheating rate of 150°C / hour in the preheating system 4 with support devices (15) and (17) , after preheating, move to the heating zone (5) with the supporting devices (15) and (17), and use electromagnetic coils (14), electromagnetic coils (16), and electromagnetic coils (18) to heat in the heating zone 5 to control the electromagnetic heating Power, ramp up to 650°...

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Abstract

The invention discloses a polycrystalline silicon bar crushing device and system. According to the polycrystalline silicon bar crushing device and system, a polycrystalline silicon bar is electromagnetically heated, the heated polycrystalline silicon bar is rapidly cooled, accordingly, stress is generated in the polycrystalline silicon bar, and the polycrystalline silicon bar is crushed. Comparedwith the prior art, the scheme solves the problems that due to existing mechanical crushing, impurity pollution is caused, the radiation heating speed is low, and energy consumption is high, the production efficiency is improved, and energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of preparation of high-purity polysilicon, in particular to a crushing device and method for polysilicon rods. Background technique [0002] Polysilicon is the main raw material for manufacturing photovoltaic solar cells and other products. Among the methods for manufacturing high-purity polysilicon, the improved Siemens method is currently the mainstream polysilicon production method. Rod polysilicon can be harvested through the improved Siemens method. [0003] The polysilicon rods produced from the reduction furnace need to be broken into lumps for packaging and storage, and the lumps are also required for ingot casting or Czochralski single crystal. At present, polysilicon blocks of about 3-200 mm are usually crushed manually, and the polysilicon blocks are packaged for sale, resulting in waste of human resources and easy pollution. [0004] In this regard, the patent US7360727B2 discloses a mechanical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C19/18B02C23/00
CPCB02C19/186B02C23/00
Inventor 李力刘逸枫付绪光沈峰阮继政郭磊田野徐浩陈其国
Owner JIANGSU ZHONGNENG POLYSILICON TECH DEV
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