FIELD: equipment for production of high-grade cement. SUBSTANCE: cryogenic complex has vessel from which liquid nitrogen through supply line, via branch pipe and shutoff valve, enters milling cryostat to which loaded preliminarily through removable cover are grinding bodies and charge. After filling of cryostat with liquid nitrogen, valve is closed and supply line is disconnected from cryostat. Electric motor cryostat via driving roller for required period of time, and liquid nitrogen is evaporated. After stopping of cryostat, line of evaporation is connected through branch pipe and closed shutoff valve to cryostat. Valve is opened and evaporated liquid nitrogen is directed through mechanical filter and throttling valve over line to condenser of Stirling cryogenic machine. Operation of Stirling cryogenic machine provides for liquefaction of considerable part of evaporated liquid nitrogen which under gravity flow into vessel. Shutoff valve closes and line is disconnected from cryostat. Produced cement is unloaded from cryostat through removable cover. EFFECT: reduced cost of production of high-grade cement. 1 dwg
