Method of making concrete sand

Details Method of making concrete sand Method of making concrete sand

1991-12-27

1993-03-16

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 29, 241DIG10, B02C 1702

Patent

active

051937522

ABSTRACT:
A method of making concrete sand includes grinding a mixture of medium stones 3, material sand 4, and water 5 in the inner milling chamber 2 of a first rotating cylindrical drum 1. The medium stones 3 are maintained to a height equal to 1/4 to 5/8 the inner diameter of the first cylindrical drum 1. The number of rotation of the first cylindrical drum 1 is decreased as the inner diameter of the same increases. The supply of the water 5 is controlled in precise or approximate proportion to the feeding of the material sand 4. The medium stones 3 are prepared by a novel manner from rubble stones 24 using a second cylindrical drum 11.

REFERENCES:
patent: 3712549 (1973-01-01), Cleemann
patent: 3862719 (1975-01-01), Muller
patent: 4013233 (1977-03-01), Nylund
patent: 4995561 (1991-02-01), Yukimi

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