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US 2019/0296341 A1Published application
Method for grinding silicon-containing solids
AssigneeWacker Chemie AG
InventorsEckhard Hanelt, Michael Fricke
Life of this patent
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Abstract
The invention relates to methods for producing silicon particles by grinding silicon-containing solids, wherein one or more gases are used, which contain reactive gas at a partial pressure of ≥0.3 bar, wherein reactive gases are selected from the group comprising oxygen, ozone, inorganic peroxides, carbon monoxide, carbon dioxide, ammonia, nitrogen oxides, hydrogen cyanide, hydrogen sulfide, sulfur dioxide, and volatile organic compounds.
Claims7
A method for producing silicon particles, comprising:
- milling silicon-containing solids which comprise phases of elemental silicon in a jet mill using one or more gases which include reactive gas having a partial pressure of ≥0.3 bar, wherein the reactive gas is selected from the group consisting of oxygen, ozone, inorganic peroxides, carbon monoxide, carbon dioxide, ammonia, nitrogen oxides, hydrogen cyanide, hydrogen sulfide, sulfur dioxide, and volatile organic compounds containing 1 to 4 carbon atoms, and wherein the reactive gas has a temperature of ≥50° C.
Dependencies are inferred from the claim text.