Automatic medium adding system for dense medium density separation in coal preparation plant, and working method

Abstract

The invention discloses an automatic medium adding system for dense medium density separation in a coal preparation plant, and a working method, and belongs to the technical field of coal washing. Thesystem comprises a feeding device, a dense medium barrel, a qualified medium barrel, a dense medium separation device and a controller, wherein the feeding device, the dense medium barrel, the qualified medium barrel and the dense medium separation device are connected in sequence; and the operation of the device is controlled by the controller. After the system is applied to the coal preparationplant, automatic identification for medium preparation and adding requirements can be realized, abnormal separation caused by insufficient medium mass is avoided, and automatic preparation and addingfor media are realized by automatically controlling medium feeding, mixing and conveying processes, so that the manpower is saved, and the working efficiency is increased.

Description

technical field [0001] The invention belongs to the technical field of coal washing and separation, and in particular relates to a system and a working method for automatic addition of medium for density separation of heavy media in a coal preparation plant. Background technique [0002] With the continuous development of coal preparation technology, large-scale coal preparation plants, system diversification, and refined management have become the main trends, and the hourly amount of medium added in coal preparation plants has increased accordingly. Therefore, there are higher requirements for medium preparation and addition. [0003] In most coal washing plants, the dense medium coal preparation system only has the function of automatic density control, and the medium preparation and addition are mostly manual operations. In the medium barrel, the operation is inconvenient, time-consuming and labor-intensive. In addition, due to the high medium consumption and the large ...

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Problems solved by technology

[0003] In most coal washing plants, the dense medium coal preparation system only has the function of automatic density control, and the medium preparation and addition are mostly manual operations. Manually add water to flush the magnet powder into the mixing pool, and then drive it into the qualified medium through the medium pump. In the medium bucket, the operation is inconvenient, time-consuming and labor-intensive

Moreover, due to the high medium consumption and the large amount of raw coal selection, the labor intensity of the medium processing workers is high. The heavy medium cannot be added to the heavy medium system in time, and the separation density cannot be adjusted quickly, resulting in waste of coal and medium.

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