Coal preparation equipment and method

Abstract

The invention discloses a coal preparation equipment, which comprises a casing, a vibrating bed, a main drop channel, a coal block discharge hopper, a coal block drop channel, a gangue discharge hopper, a connection to the drop channel, a gangue identification system and a gangue sorting system, and a gangue identification system. The system includes an X-ray emitting device, an X-ray receiving device and a central controller; the gangue sorting system includes an air compressor, an air nozzle and a solenoid valve for controlling the opening and closing of the air nozzle; the air compressor is set in the casing, and the air nozzle is located The X-ray receiving device is connected to the coal drop channel, the air nozzle and the air compressor are connected through an air supply pipeline, and the solenoid valve is respectively connected to the central controller and the air nozzle for signals. The invention discloses a coal preparation method. The coal preparation equipment and coal preparation method provided by the invention realize the automation of gangue selection or coal preparation process, replace manual gangue selection, save human resources, reduce labor costs, and improve the quality and efficiency of gangue selection.

Description

Technical field [0001] The invention relates to the technical field of coal preparation, in particular to a coal preparation equipment and a coal preparation method. Background technique [0002] At present, in the process of coal mining and processing, the gangue separation of coal is done by manual separation. Manual sorting has problems such as high labor intensity, low efficiency, different and unstable sorting quality from person to person, and dust in the working environment that affect and damage the health of workers, which need to be solved urgently. Moreover, coal gangue sorting is carried out when the coal lump enters the coal washing plant, and consequently, the selected gangue must be stored in the gangue disposal site set up on the ground, which will cause environmental impacts and increase the cost of coal production. Reclamation costs, and the missed gangue will increase the washing cost and affect the quality of commercial coal. Summary of the invention [0003]...

AI Technical Summary

Problems solved by technology

Manual sorting has problems such as high labor intensity, low efficiency, unstable sorting quality varies from person to person, and dust in the working environment affects and damages the health of workers, which need to be resolved urgently

Moreover, the sorting of coal and gangue is carried out when the coal block enters the coal washing plant, and it brings that the selected gangue has to be stored in the gangue discharge site set up on the ground, causing environmental impact, and the cost of coal production will also increase land acquisition and coverage. Reclamation costs, missed waste rock will increase the cost of washing and affect the quality of commercial coal

Images