FIELD: weapons and ammunition.
SUBSTANCE: invention relates to method of solvent stripping from powder elements in production of pellet powder for small arms. After introduction of sodium sulphate into dispersion medium performing solvent stripping by heat carrier temperature raising from 68 °C to 86-87 °C. During temperature raising introducing antifoaming agent of PG-2 or PG-3 grade into reactor. At temperature of 86-87 °C 70-75 wt% of ethyl acetate from its total amount is stripped, and then, raising heat carrier temperature up to 98-100 °C and stripping remaining ethyl acetate. Solvent stripping is performed at strictly definite temperature in bubble boiling mode. Introduction of antifoaming agent enables to completely eliminate formation of foam on liquid-gas phases phase interface.
EFFECT: spherical powder obtained in this solvent stripping mode, has preset bulk density and evenly distributed porosity in powder elements.
1 cl, 1 tbl, 5 ex
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Authors
Dates
2016-12-20—Published
2015-01-28—Filed