FIELD: processing of aluminosilicate raw materials in production of granulated materials designed for use in various industries using granules, for instance, as wedging agents (propants) in oil recovery by method of hydraulic fracturing of formation. SUBSTANCE: aluminosilicate mixture contains kaolin roasted at 700- 900 C and containing 30-45 wt.% of Al2O3 and additive increasing granule strength. Additive is used in form of the following substance or their mixtures: alumina dust as waste of alumina production, baddeleyite, powdery zirconium concentrate roasted at 800-1100 C and nonroasted bauxite with the following amounts of components, wt.%: roasted kaolin 70-99.5; additive 0.5- 30. EFFECT: extended base of production of high-strength granules (propants) and reduced costs. 12 cl, 1 tbl
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Authors
Dates
1999-11-10—Published
1998-10-02—Filed