US2367464A

US2367464A - Lining for tube mills or crushing mills containing balls or similar crushing bodies

Info

Publication number: US2367464A
Application number: US312133A
Authority: US
Inventors: Henricot Jacques Fernand
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-01-20
Filing date: 1940-01-02
Publication date: 1945-01-16
Anticipated expiration: 1962-01-16

Description

Jan. 16, 1945. J HlENRlcoT 2,367,464

LINING FOR TUBE MI s OR CRUSHING MILLS CONTAINING BALLS OR SIMILAR CRUSHING BODIES Filed Jan. 2, 1940 4' R? L12 T @l; m,

Patented Jan. 16, 1945 LINING FOR TUBE MILLS OR CRUSHING MIILLS CONTAINING BALLS OR SIMILAR CRUSHING BODIES Jacques Fernand Henricot, Court-St.-Etienne,

Belgium; vested in the Alien Property Custodian Application January 2, 1940, Serial No. 312,133

In Belgium January 20, 1939 1 Claim.

This invention relates to a lining for tube mills or mills using spherical balls or similar bodies as crushing agents.

Among the objects is to provide a mill which is strong, durable and efiicient and economical.

The mill is preferably in the form of a drum, the inner wall or inner lining of which is provided with inwardly extending projections adapted to receive the impact of the balls or other bodies employed, Such projections are preferably of high manganese steel, the surface of which is hardened by repeated impacts. The spacing of the projections and size of balls employed is such that the balls strike only the inner projecting faces of the projections.

Other objects and advantages will appear from the following description taken in connection with the accompanying drawing wherein:

Fig. 1 is a fragmentary perspective;

Fig. 2 is a view similar to Fig. 1 but showing a modified form of projection;

Fig. 3 is a plan View of a portion of the liner with a ball resting on three of the projections, and

Fig. 4 is a sectional view taken on the'line 4& of Fig. 3.

In the construction shown in the drawing skid of the material is greatly reduced, so that, when the mill is turning, balls and material to be crushed are carried upwards over a very great area before getting loose and falling from an increased height down on the bottom. Heavier blows and better production result,

In Figures 1 and 2, projections are portions of fins, such as 5, 6, I, aligned along two perpendicular directions, several of these meeting; in Figure 2, for example, fins 5, 6 and 1 meet each other, the

(Cl. Zak-1.83)

whole of them forming one projection. In Fig. 3, I show a ball l2 resting on an edge and corners of fin portions 5.

According to the invention, the different projections aforesaid may be either cast together with the bottom plate, or assembled on this latter.

The several segments herebefore described and represented are only particular constructional examples of the invention. Several constructional modifications may be used without transgressing the limits of the invention.

What I claim is:

A rotary crushing mill with crushing bodies comprising interior projections formed of metal subject to hardening by repeated impact, said projections presenting T-shaped faces in staggered relation with the upright of the T extending in the direction of rotation of the mill, with their smallest linear dimensions less than the smallest linear dimensions of the crushing bodies, said projections having a distance between them which is less than the smallest linear dimension of the crushing bodies, the height of the projections relative to the bottom of the space between them being sufficient to prevent the crushing bodies which rest between adjacent projections from coming in contact with the bottom of the space between the projections and the dimensions of the crushing bodies being such as to permit them to enter substantially into'the space between the projections whereby when the mill is rotated, the crushing bodies will be carried around with the projections a substantial distance before falling.

JACQUES FERNAN D HENRICOT.