Silicon Slurry Treatment

ZhenAn International Co., Limited is one of the most reliable manufacturers and suppliers of silicon slurry treatment in China. With abundant experience, we warmly welcome you to wholesale discount silicon slurry treatment in stock here from our factory. Quality products and reasonable price are available.

Difficulties in the treatment of silicon slag The main components of the silicon slag are analyzed, and the difficulties in the treatment are mainly manifested in two aspects.

The first is the treatment of chlorosilanes. Chlorosilanes react violently with air and water to generate a large amount of acid mist and white silicon dioxide foamy solids, which are less dense than water and generally float on the water. Moreover, highly explosive hydrogen gas will be released during the reaction, which will bring great disadvantages to safe operation.

Followed by other compounds in silica fume. According to the process description of polysilicon and cold hydrogenation production process (5-18, the silicon powder in the reaction process is the main production raw material, because industrial silicon powder contains B, P, A1 and other impurities, and these impurities basically do not participate in the synthesis reaction , that is, there is basically no consumption in the reaction. It is enriched in the reaction process, and is finally discharged and collected in the form of silicon slag slurry residue. Therefore, the impact of these impurities during the treatment process cannot be underestimated.

The treatment direction of the slag is the direction of the treatment of the silicon slag, which is ultimately harmless and partially resourced. Recycling can be achieved through separation and purification, and final harmlessness will be a subject to be developed.

First, to eliminate the safety hazard of silicon slag slurry, chlorosilane must be completely treated first, and hydrolysis is currently the most effective and mature method. Chlorosilanes are fully reacted by hydrolysis to form harmless silica and salt wastewater.

Second, other impurities in the silicon slag should be properly handled. According to the actual experience in the polysilicon production process, the residual silica fume reacts violently with the lye and can cause an explosion. The main reason is that the P and its compounds react violently with lye to generate explosive gas hydrogen under other exothermic reaction conditions. Therefore, the silicon slag slurry cannot be treated with strong alkali at will, so as to avoid safety accidents.

According to the treatment experience, the fully oxidized residue after complete hydrolysis is stable and harmless, and can be landfilled.

Q: If I need customized packaging, is that available?
A: Yes, we can supply different specifications of bag or steel drum according to you requirement.

Q：What are the payment terms?
A：Usually T/T , or L/C.

Q : What is your lead time?
A : It usually needs about 15- 20 days after receiving the PO.

Email: info@zaferroalloy.com

Address: Huafu Commercial Center, Wenfeng District, Anyang City, Henan Province, China

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