Coal mine goaf gangue return well slurry and preparation method thereof

The invention discloses a coal mine goaf gangue return well slurry and a preparation method thereof. The gangue return well slurry is composed of 150-200 parts by weight of gangue powder, 10-35 parts by weight of a slurry stabilizer and 90-220 parts by weight of water. The preparation method compris...

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Bibliographic Details
Main Authors NIU MATOU, YUAN DONGFENG, XU RUN, TENG DEQIANG, WANG QUN
Format Patent
LanguageChinese
English
Published 01.08.2023
Subjects
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Summary:The invention discloses a coal mine goaf gangue return well slurry and a preparation method thereof. The gangue return well slurry is composed of 150-200 parts by weight of gangue powder, 10-35 parts by weight of a slurry stabilizer and 90-220 parts by weight of water. The preparation method comprises the following steps: crushing a coal gangue raw material, vibrating and screening to obtain coal gangue with the particle size of more than 25mm, re-putting the coal gangue into a crusher for crushing, putting the crushed coal gangue with the particle size of less than or equal to 25mm into a pulverizer for grinding, and obtaining coal gangue powder after the grinding is finished; uniformly mixing the coal gangue powder with a slurry stabilizer to obtain a mixed raw material; and adding water into the mixed raw material, and uniformly stirring and mixing to obtain the coal mine goaf gangue return well slurry. The prepared gangue return well backfill slurry has good water-retaining property and flowability, sedim
Bibliography:Application Number: CN202310344568