Selection of silicon powder transfer valves for polysilicon projects
Thread Content
I am following a polysilicon project, and the polysilicon production still relies primarily on the improved Siemens process; most projects in China use this method. It involves the valve part, and I would like to discuss it with all of you sea friends. In my opinion, imported high-wear-resistant ball valves or disc valves should be used for silicon powder transfer valves. As far as I know, most other projects in China use brands such as VTI, neles, and mogas. I wonder if Haiyou has any other references. Are there any domestic alternatives, and how do they work?
Housesitters participating in the project are requested to reply promptly.
Silicon powder is very hard, with a Mohs hardness of 7.0; ordinary valves cannot withstand such conditions. It’s not clear what effect this has on imported valves, but wear is inevitable~
Disc valves, those from Shanghai Futaisi – you should get in touch with them; as far as I know, their products are of good quality
Using graphite plug ball valves, which are inexpensive and offer good sealing performance, can be used for silicon powder transportation for over half a year without any problems.
The reason why disc valves can have a long service life is that they must: . Under this premise, many valves can be used. You can think about it – it’s no wonder its lifespan isn’t long.
Our company uses ceramic valves for silicon powder
VTI??? Do you dare to use it??????