Hollow glass microspheres and method for producing the same
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United States of America Patent
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Sep 21, 2021
Grant Date -
May 9, 2019
app pub date -
Nov 6, 2018
filing date -
Nov 6, 2017
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Abstract
A method for producing hollow glass microspheres includes preparing an aqueous suspension of starting materials including finely ground glass and waterglass. Combustible particles are produced from the suspension and are mixed with an AlO(OH)-containing pulverulent release agent. The mixture of combustible particles and release agent is introduced into a combustion chamber of a furnace where it is expanded at a combustion temperature which exceeds the softening temperature of the finely ground glass, to form the hollow microspheres. Hollow glass microspheres produced according to the method are also provided.
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