FIELD: construction.
SUBSTANCE: plant comprises a cryogenic drum mill of cyclic action in the form of a rotary heat insulated milling cryostat (7), a cryogenic Stirling machine (1) with a condenser (2), a reservoir (3) for storage of cryogenic liquid with a high pressure pump (6), a drainage line (4) from the condenser into the reservoir, a supply line (5) from the reservoir into the cryostat, an evaporation line (10) with a filter (11). The cryostat is made with a detachable cover (15) and nozzles (13, 14) to pour and evaporate the cryogenic liquid with stop valves (16, 17). The cryostat is located between two longitudinal rollers. One of rollers (8) is driven and is connected to an electric motor (9). The cooling system of the cryogenic machine stretches via a refrigerator (22) and comprises serially connected a circulation pump (23), a heat exchanger (24) of cooling external medium and a heat exchanger (12) of the evaporation line. The line of atmospheric air supply (18) is equipped with an ejector (19) and a freeze-out device for moisture and carbon dioxide gas (20). The drainage line stretches via the freeze-out device. The line of cryogenic liquid vapours connects the gas cavity of the reservoir and the ejector. Liquid air is used as cryogenic liquid for cryomilling.
EFFECT: increased reliability and duration of plant operation.
1 dwg
