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Abstract

A method for producing powder from polycrystalline inorganic material by contacting polycrystalline inorganic material with the vapor of one or more reduced alkali metals in an environment substantially free of oxygen for a period of time sufficient to cause disintegration of the polycrystalline inorganic material into powder. The polycrystalline inorganic material may consist of one or more oxides, sulfides, or silicates, or combinations thereof. The poly crystalline inorganic material may also comprise a rock or mineral, such as basalt or pyrite.

Patent Number

5,524,836

Assignee

Board of Control of Michigan Technological University, Houghton, Mich.

Application Number

016,850

Date Filed

2-12-1993

Certificate of Correction

No

Issue Date

6-11-1996

Disciplines

Engineering | Materials Science and Engineering

Method for producing powder from polycrystalline inorganic material

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