FIELD: mining. SUBSTANCE: mixture has the following ingredients in by mass: potassium alum 4.6-7.2, lignosulphonates 4.6-8.9, water 11.1-14.5, aluminium powder 0.08-0.16, the rest is filled with natural anhydrite to 100% EFFECT: increased holding power. 1 dwg, 6 tbl
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Authors
Dates
1995-11-10—Published
1992-09-10—Filed