CRUDE MIXTURE FOR MAKING EXPANDED CLAY

摘要

FIELD: chemistry. ^ SUBSTANCE: invention relates to the industry of construction materials and can be used in recycling coal benefication wastes and sewage sludge after biological treatment. The crude mixture contains the following in wt %: clay material - 94-95, coal benefication wastes with 54.4% content of residual carbon - 3.5-4.0 and sludge after biological treatment of domestic sewage, containing iron oxides and carbon - 1.5-2.0. ^ EFFECT: low packed density of expanded clay and high expansion coefficient of granules thereof. ^ 1 tbl