Recovery device for mortar cut from polycrystalline silicon

Abstract

The invention discloses a recovery device for mortar cut from polycrystalline silicon. The recovery device comprises a dust removal chamber, a dust inlet pipe and a return pipe. A water tank is mounted at the top end of the dust removal chamber. The dust inlet pipe penetrates the water tank and is mounted on the dust removal chamber. A water pump is arranged in the water tank. Multiple sets of spray heads are mounted on the return pipe. A drying chamber is arranged in the dust removal chamber. Multiple inclined guide plates are arranged in each drying screen. A dust collection hopper is mounted at the bottom end of the drying chamber. A vertical pipe is connected to the outlet end of the dust collection hopper. Multiple L-shaped pipes are connected to the vertical pipe. A three-way valve is arranged between the vertical pipe and the L-shaped pipes. Multiple collecting tanks are arranged on the inner wall of the bottom of the dust removal chamber. The recovery device has the beneficial effects of being simple in structure, good in dust removal effect and low in cost, the pollution of dust generated in the process of the recovery device for the mortar cut from the polycrystalline silicon to equipment and the surrounding environmental health is avoided, and it is particularly important that the body health and safety of working staff is guaranteed.

Description

technical field [0001] The invention relates to the technical field of auxiliary equipment for silicon wafer cutting machines, in particular to a recovery device for polysilicon cutting mortar. Background technique [0002] With the continuous development of the solar silicon wafer cutting industry, the cost of mortar accounts for an increasing proportion of the cost of silicon wafer processing. All silicon wafer cutting companies are introducing various types of mortar recycling equipment to realize the recycling of old mortar. , thereby reducing the input ratio of new mortar to reduce production costs, which can reduce the cost of cutting fluid and silicon carbide micropowder by about 50%. [0003] At present, the recycling methods for old mortar mainly include offline recycling and online recycling. Offline recycling is to separate the old mortar by building an old mortar recycling and processing plant. There are many offline recycling processes and many intermediate link...

AI Technical Summary

Problems solved by technology

[0003] At present, the recycling methods for old mortar mainly include offline recycling and online recycling. Offline recycling is to separate the old mortar by building an old mortar recycling and processing plant. There are many offline recycling processes and many intermediate links; online recycling refers to the The waste mortar generated at the silicon wafer cutting site is separated by a centrifuge to separate the solid and crude liquid, and the crude liquid is transported to the storage tank, and the crude liquid in the storage tank is transported to the filter press for filtration. In order to improve the filter press However, it is easy to generate dust when adding filter aid. Most of the existing recovery devices for polysilicon cutting mortar do not pay enough attention to the dust treatment generated when adding filter aid. Therefore, the staff inhales a large amount of dust during operation, which leads to the outbreak of various physical diseases and seriously endangers the health of the staff.

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