A kind of coal water slurry preparation method and its equipment

Abstract

The invention discloses a method for preparing coal water slurry and its equipment, including a special arch-breaking double-roller teeth feeding buffer bin, a special batching mixing tank and a special slurry breaker. The invention is simultaneously applicable to coal mixing, coal slime and coal blending For the preparation of all coal types, change the dry crushing (moisture content < 15%) of mixed coal in the existing coal-water slurry preparation method to wet crushing (moisture content > 28%), and change the slurry preparation method of coal slurry to crushing Slurry, all kinds of raw coal can be prepared in one material preparation production line to complete quantitative coal feeding, belt scale accurate measurement, transportation, lump coal crushing, and coal slurry slurrying method requirements. It is an environmentally friendly and energy-saving coal-water slurry preparation method. The specific added price makes the prepared coal-water slurry of good quality, the invention has simple method, less equipment, less installed capacity, less land occupation, less investment and no coal dust.

Description

technical field [0001] The invention relates to the technical field of coal-water slurry preparation, in particular to a method and equipment for preparing coal-water slurry. Background technique [0002] Coal water slurry is an environmentally friendly and energy-saving coal-based fluid fuel. At present, the preparation and application of coal water slurry in my country has been commercialized, but there are still some problems in the preparation method of coal water slurry, mainly because the preparation process is complicated, the power consumption is high, and the coal dust is large. [0003] The existing coal-water slurry preparation method is composed of a material preparation process and a pulping process. The method of the material preparation process is determined according to the particle size composition of the raw coal. The existing problems are: [0004] 1. The raw material preparation method of mixing coal slurry is sent to the belt conveyor by the vibrating c...

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Problems solved by technology

Dust removal equipment must be added for dust removal, and the dust removal effect is not ideal

Therefore, this method of dry crushing has the disadvantages that are difficult to overcome due to the requirement of low moisture in the raw coal: large coal dust, many equipments, large workshop area, high power consumption, and large investment

This kind of material preparation method has low mixing efficiency (especially the frozen block type) and high power consumption. It cannot be accurately measured with a quantitative belt, and the pulping concentration is unstable, which affects product quality.

[0006] 3. It is more difficult to use coal blending and coal slime blending production in the existing material preparation method (it is necessary to use blending coal and coal slime blending production in pulp mills)

Therefore, the existing material preparation method needs to use coal blending. The production process is relatively complicated, and the power consumption is large, and the coal dust is also large.

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