Method for preparing ultra-pure silicon dioxide micropowder

Method for preparing ultra-pure silicon dioxide micropowder

  • CN 101,585,538 A
  • Filed: 05/23/2008
  • Published: 11/25/2009
  • Est. Priority Date: 05/23/2008
  • Status: Active Application
First Claim
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1. , a kind of preparation technology of ultra-pure silicon dioxide micropowder, it is characterized in that its preparation technology is:

  • be raw material with the quartz, the technology branch is made pulverizing, removal of impurities, washing, oven dry four-step method, adopt the ultra micro airflow pulverization method, raw material is made the silicon-dioxide micron-sized powder, use and receive the cleaner made by hydrochloric acid, oxalic acid and ethylenediamine tetraacetic acid (EDTA) and carry out impurity and purification and filter, wash with deionized water, oven dry gets final product again.

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