CELLULOSE POWDER PRODUCTION PROCESS Russian patent published in 2000 - IPC

FIELD: paper-and-pulp industry. SUBSTANCE: initial cellulose is hydrolyzed in acid solutions, product is washed, dried to moisture content 10 to 30% and simultaneously ground in wet state and in thin layer when agitated in contact with heated surface of blade mixer equipped with Z-shaped stirrers. Process is carried out at cellulose in-layer circulation speed at least 0.15 m/s. EFFECT: accelerated (approximately by 10%) drying phase due to intensified drying and grinding operations, and increased homogeneity of product. 2 cl, 1 tbl, 9 ex