METHOD FOR DOSING OF POWDERS Russian patent published in 2006 - IPC B65D88/70 B65G53/40 

FIELD: dosing of bulk materials tending to arching, used in metallurgical, construction, chemical, food-processing, pharmaceutical and other branches of industry.

SUBSTANCE: method involves dosing powders tending to arching with the use of sluice feeder by periodic supplying of air for powder arch destruction through feeder blades at a frequency of f ≥ f_p·n, but not in the excess of 10 Hz, and porosity of S ≤ n·f_p/2f, where f_p is rotational frequency of feeder rotor, n is number of feeder blades; initiating air supplying procedure at the moment blade end goes past leading end of charging opening in direction of rotation of rotor.

EFFECT: reduced consumption of air supplied to blades, decreased dusting and grinding of powder particles for enabling more precise dosing of powder.

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