Granulated slag products and processes for their production
AssigneeHatch Ltd.
InventorsLai Chi So, Santiago Faucher
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Abstract
A process for preparing solid slag granules from a molten slag composition comprises: (a) providing the molten slag composition; (b) converting the molten slag composition into the solid slag granules in a dispersion apparatus; and (c) sorting the solid slag granules by shape in a separator to produce a plurality of fractions having different sphericities. Granular slag products comprise one or more fractions of solid slag granules produced by the process, and include proppants, roofing granules, catalyst supports, which may be porous or non-porous, and coated or uncoated.
Claims28
A process for preparing solid slag granules from a molten slag composition, comprising:
- (a) providing the molten slag composition;
- (b) converting the molten slag composition into the solid slag granules in a dispersion apparatus;
- and
- (c) sorting the solid slag granules by shape in a separator to produce a plurality of fractions having different sphericities, wherein at least one of the fractions produced by said sorting consists of said solid slag granules having an average sphericity of greater than 0.6, wherein at least one of the fractions produced by said sorting consists of said solid slag granules having an average sphericity of less than 0.6, and wherein a ratio of said solid slag granules having an average sphericity of greater than 0.6 to said solid slag granules having an average sphericity of less than 0.6 is controllable by adjustment of one or more of the following parameters:
- (a) the temperature of the molten slag composition;
- and
- (b) an angle between a gas stream and a falling stream of said molten slag composition, where the dispersion apparatus comprises an atomization apparatus.
Dependencies are inferred from the claim text.