Unpowered ball mill grinding head excess material self-driven regrinding device

Abstract

The invention discloses an unpowered ball mill grinding head excess material self-driven regrinding device. The unpowered ball mill grinding head excess material self-driven regrinding device comprises a fabricated double-screw cylinder screen, an inner bucket type material lifting wheel, a mill power output device and an insertion type screw feed pipe. One end of the fabricated double-screw cylinder screen is connected with a mill discharge port through bolts, and the other end of the fabricated double-screw cylinder screen is connected with one end of the inner bucket type material lifting wheel through bolts. The other end of the inner bucket type material lifting wheel is connected with the mill power output device through bolts. The bottom of the mill power output device is arranged on a device mounting support body. One end of the insertion type screw feed pipe is in driving connection with the mill power output device. The other end of the insertion type screw feed pipe passes through the inner bucket type material lifting wheel and the fabricated double-screw cylinder screen to extend into a mill. The unpowered ball mill grinding head excess material self-driven regrindingdevice achieves the effects of screening and lifting materials and returning the materials to the feed end inside the mill through the power of the ball mill and belongs to a brand-new device capableof realizing direct return of oversize materials without external discharge, and energy consumption of the device is reduced.

Description

technical field [0001] The invention relates to the technical field of ore grinding equipment, in particular to a self-driven regrinding device for grinding head sieve residue of a non-powered ball mill. Background technique [0002] In my country's mine beneficiation industry, in addition to using autogenous or semi-autogenous grinding for coarse grinding, the rest of the grinding process basically uses two-stage grinding technology. The first stage of grinding uses a ball mill for wet coarse grinding. The second stage grinds the sorted ore to meet the technological requirements. [0003] In the two-stage grinding process, regardless of whether the first-stage ball mill adopts a grid mill or an overflow mill, the material after coarse grinding needs to be classified by screening equipment, and the next step of processing is carried out under the sieve, and the upper sieve returns to the ball mill for repeated grinding. , until the qualified particle size is fully reached. ...

AI Technical Summary

Problems solved by technology

The material discharged from the first stage of grinding is basically checked and screened by grinding head screen (commonly known as grinding tail drum screen), negative angle spiral classifier or linear vibrating screen + large angle belt, because the material on the screen is screened out and fed to the mill. There is a certain distance and drop in the material inlet, and it is difficult to realize the secondary grinding of the material on the screen without adding auxiliary equipment. Even if the auxiliary equipment is used, it is difficult to install the auxiliary equipment, the auxiliary equipment is seriously worn, and the energy consumption is huge. It has become a difficult problem for the industry to return the on-screen material to the ball mill after the discharge and classification of the grinding tail

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