METHOD OF CRUSHING OF OVERSIZES (VARIANTS) Russian patent published in 1998 - IPC

Abstract RU 2107888 C1

FIELD: secondary crushing of oversized lumps at surface and underground mining work. SUBSTANCE: main (1) and additional (4) charges are placed on the surfaces of oversized lumps adjoining the surface of rock exposure 3. The main charge is formed out of a group of shaped charges with longitudinal V-shaped components placed curvilinearly. The V-shaped components of the adjacent charges are oriented along the curvature line in the opposite direction, and the concavity of the curve is directed towards the surface of rock exposure. According to the second variant, the main charge is placed in the form of an angle, whose sides are oriented towards the surface of rock exposure at an angle of 10 to 40 deg. EFFECT: enhanced efficiency. 5 cl, 7 dwg

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RU 2 107 888 C1

Authors

Uvarov V.N.

Samartsev M.G.

Ivashko M.N.

Protasov S.I.

Bogomolov I.D.

Dates

1998-03-27—Published

1995-08-09—Filed