Impact ore mill

Claim 2

An ore mill comprising a rotor having a shaft on which beater blades are mounted, a revolvable drum enclosing the rotor and having side walls and a peripheral wall, said side walls having openings through which the rotor shaft projects, said peripheral wall having circumferentially spaced screened openings and inwardly projecting impact plates, means for rotating the rotor and the drum to sweep the beater blades passed the impact plates in a cooperative, ore disintegrating motion, and mounting means for the drum, said mounting means including means for adjusting the axes of rotation of the rotor and drum radially relative to one another to vary the clearance between the beater blades and the impact plates.

Claim 3

An ore mill as claimed in claim 1 and including sealing means mounted on each side wall to seal the rotor shaft within an adjacent opening.

Claim 4

An ore mill as claimed in claim 1, in which said rotor comprises circumferentially spaced bars extending parallel to the rotor shaft, said beater blades each being formed of at least two similar and interchangeable parts removably secured to a bar.

Claim 5

An ore mill as claimed in claim 1, in which said mounting means supports the drum on a base and comprises two pairs of wheels mounted on said base, a trunnion ring secured to each side wall concentric to the axis of rotation of the drum, said trunnion rings being rotatably supported on the pairs of wheels and means for adjusting one pair of wheels towards and away from the other pair of wheels.

Claim 6

An ore mill as claimed in claim 2, in which each of said sealing means comprises a cover plate slidably and non-rotatably supported against an end wall to cover the opening therein, and a small and a large annular seal interposed between each cover plate and end wall to define a mud channel for containment of seepage escaping through the end wall opening.

Claim 7

An ore mill as claimed in claim 5, and including an annular collar secured to each side wall to enclose a large annular seal and a rim of a cover plate, said annular collars each being shaped to define a second mud channel encircling one of the first mentioned mud channels.

Claim 8

An ore mill comprising a base, a rotor having a shaft rotatably mounted on the base and beater blades extending parallel to said shaft, a revolvable drum enclosing the rotor and having side walls and a peripheral wall, said side walls having openings through which the rotor shaft projects, said peripheral wall having inwardly projecting impact plates, two pairs of wheels mounted on the base, a trunnion ring secured to each side wall around the opening therein, said trunnion rings being rotatably supported on the pairs of wheels, means for rotating the rotor and the drum to sweep the beater blades passed the impact plates, and means for adjusting one pair of wheels towards and away from the other pair of wheels whereby to move the axes of rotation of the rotor and drum radially relative to one another and thereby vary the clearance between the beater blades and the impact plates.

Claim 9

An ore mill comprising a base, a rotor having a shaft rotatably mounted on the base and beater blades extending parallel to said shaft, a revolvable drum enclosing the rotor and having side walls and a peripheral wall, said side walls having openings through which the rotor shaft projects, said peripheral wall having inwardly projecting impact plates, two pairs of wheels mounted on the base, a trunnion ring secured to each side wall around the opening therein, said trunnion rings being rotatably supported on the pairs of wheels, means for rotating the rotor and the drum to sweep the beater blades passed the impact plates, and means for adjusting one pair of wheels towards and away from the other pair of wheels whereby to move the axes of rotation of the rotor and drum radially relative to one another and thereby vary the clearance between the beater blades and the impact plates.

Claim 10

An ore mill as claimed in claim 7 and including sealing means mounted on each side wall to seal the rotor shaft within an adjacent opening.

Claim 11

An ore mill as claimed in claim 8, in which each of said sealing means comprises a cover plate slidably and non-rotatably supported against an end wall to cover the opening therein, and a small and a large annular seal interposed between each cover plate and end wall to define a mud channel for containment of seepage escaping through the end wall opening.

Claim 12

An ore mill as claimed in claim 9, and including an annular collar secured to each side wall to enclose a large annular seal and a rim of a cover plate, said annular collars each Being shaped to define a second mud channel encircling one of the first mentioned mud channels.