Process for impact crushing of rock and ore lumps and an apparat

Details Process for impact crushing of rock and ore lumps and an apparat Process for impact crushing of rock and ore lumps and an apparat

1992-08-05

1994-07-12

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

By utilizing kinetic energy of projected or suspended material

241 27, 241 29, 241 73, 241154, 241275, B02C 1320

Patent

active

053281039

ABSTRACT:
A process for impact crushing of rock and ore lumps, in which a rock lump is subjected to a primary impact force P.sub.1, and then the plurality of resultant smaller pieces are subjected to a secondary impact force P.sub.2. The application of the impact forces P.sub.1 and P.sub.2 is synchronized in time. The velocity vector V.sub.1 of the lump subjected to the primary impact force P.sub.1 and the vector of the secondary impact force P.sub.2 lie on a line running through the center of the lump mass. The invention also covers an apparatus for performing the above process, which comprises a housing accommodating a primary crushing rotor and a secondary crushing rotor, and also means for synchronizing the rotation of the secondary crushing rotor and the primary crushing rotor, coupled kinematically to said rotors. The secondary crushing rotor has two hammers, and its mass increases along the longitudinal axis of symmetry in a direction away from the axis of rotation.

REFERENCES:
patent: 1439581 (1922-12-01), Sedberry
patent: 2862669 (1958-12-01), Rollins
patent: 3707266 (1972-12-01), Llabres
patent: 4143823 (1979-03-01), Judson, Jr.
Roots Division of Dresser/Holmes Ltd. Holmes-Hazemag Impact Crushers, 4 pages.

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