Paste preparation method based on vacuum filtration thickening and dehydrating and preparation system

Abstract

The invention discloses a paste preparation method based on vacuum filtration thickening and dehydrating and a preparation system. The preparation system comprises a vacuum filter, a mill tailings conveying belt, a cement bin, a micro-powder scale, a horizontal mixer and a vertical mixer. The vacuum filter is used for vacuum-filtering mill tailings as a filter cake. The mill tailings conveying belt is used for conveying the filter cake to the horizontal mixer. The micro-powder scale is used for quantitatively conveying a cementing material in the cement bin to the horizontal mixer. The discharging end of the horizontal mixer is connected with the feeding end of the vertical mixer. The preparation method is capable of processing all mill tailings and thickening by using a vacuum filtrationmode, and overcoming problems in a current paste filling technology that a rake is easily pressed, and the mill tailings is graded and the like, and has the characteristics of good thickening effect,good continuity, and effectively guaranteeing that granulometric class compositions of all mill tailings are not changed. Compared with a traditional paste filling method, the preparation method is suitable for a mine of which the mill tailings is extremely easily settled, and has good application prospect and a social value.

Description

technical field [0001] The invention relates to a paste preparation method based on vacuum filtration, concentration and dehydration, and also relates to a paste preparation system based on the method. Background technique [0002] With the increase of mining depth, the superimposed effect of the gradually increasing in-situ stress and blasting stress in the ore rock is also becoming more and more obvious. Especially for mines that use filling mining, in order to carry out mining operations more safely, the quality and strength of the filling body are required. Further improve. At the same time, as the depth increases, the drainage cost also increases accordingly, and it is necessary to reduce the underground drainage as much as possible. [0003] In recent years, the research and application of paste filling has become increasingly mature. At present, many mines at home and abroad have adopted paste filling technology. One is to use as much tailings as possible, the other ...

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Problems solved by technology

[0005] The present invention proposes a paste preparation method and preparation system based on vacuum filtration, concentration and dehydration. The problem to be solved is: the concentration process of mine tailings that is easy to settle cannot meet the filling requirements, and cannot achieve effective concentration and continuous operation

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