PLANT FOR THERMAL TREATMENT AND GRINDING OF CLAY MATERIAL Russian patent published in 1999 - IPC

FIELD: equipment of shops where thermal treatment and grinding of clay materials are performed, mainly clays at low degree of sand content, soft and high-soft clays for preparation of powders for clay drilling fluids and foundry sand foundry, litter for cattle and fillers for cat toilets. SUBSTANCE: proposed plant includes thermal treatment and grinding apparatus and fine grinding device, branch pipes for loading and suction of particles and gases, gas and air pipes, furnace, unloading device and cyclone. Thermal treatment and grinding apparatus is provided with upper cylindrical receiving portion fitted with cover and lower taper portion fitted with perforated podium which is mounted on furnace unit equipped with burners and air and gas pipes with gas and air feed regulators. Branch pipe used for, loading coarse ground particles and branch pipe used for suction of particles and gases from cavity of apparatus and delivery of them to main and additional bins via pipe line and cyclones are connected with cover. Unloading device is made in form of branch pipe for unloading thermally treated material which is preliminarily ground in fluidized bed; unloading device is connected with lower taper portion of apparatus. Fine grinding device is provided with mechanism for dry treatment of material, loading chamber connected with unloading branch pipe and branch pipe for suction of particles and gases. Finely ground material receiving chamber is connected via regulators with air supply pipes of furnace unit and with main bin. EFFECT: low cost of production; increased productivity. 3 cl, 2 dwg