A coal slime deep slurry modification equipment

Abstract

The invention relates to the field of coal slurry pretreatment, in particular to equipment of deeply slurry mixing and modifying of coal slime for slurry mixing and modifying of high-ash fine coal slime difficult to float. The equipment comprises a mixing box; agentia dispersion tanks are arranged at the top of a chamber of the mixing box, and an annular dispersion unit and an annular ore pulp feed chutes are arranged at the outside of the agentia dispersion tanks in sequence; a fallplate with a dip angle is arranged below a discharge port of the annular dispersion unit; vane wheels are arranged below the fallplate with the dip angle, and stator walls encircle the vane wheels; a liquid outlet of the mixing box is formed in bottom end surface of the mixing box; double row side-by-side nozzles with dispersed jet flows for providing agentia mixed liquor to the agentia dispersion tanks are arranged at the top end surface of the mixing box; two agentia dispersion tanks are arranged in parallel along the tank direction; diffusers of each nozzle with the dispersed jet flow extents into chambers of corresponding agentia dispersion tank. The equipment can play a very good role in modifying of floated coal slime and is particularly suitable for the demand of slurry mixing and modifying of fine coal difficult to float, the work efficiency of the equipment is high and a treatment process is rapid and convenient.

Description

Technical field [0001] The invention relates to the field of coal slurry pretreatment, in particular to a coal slurry deep mixing and upgrading equipment used for high ash and difficult-to-select fine-grained coal slurry. Background technique [0002] Since the flotability of coal slime in my country is generally poor, coal slurry pretreatment is an indispensable link in the flotation coal preparation process and a prerequisite for the flotation machine to obtain good technical and economic indicators. The necessity of coal slurry pretreatment mainly has the following four points: 1) Fully disperse the flotation agent (non-polar oil collector and foaming agent), and the flotation agent of coal slime is insoluble or slightly soluble in water. Only by fully dispersing it into a large number of tiny droplets, can it be uniformly mixed into the coal slurry; 2). The dispersed flotation reagent is well mixed into the coal slurry, and the non-polar oil collector is Coal particles of di...

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Problems solved by technology

As a relatively advanced coal slurry pretreatment device in the field, the flotation agent droplets are an order of magnitude smaller than the emulsified and dispersed droplets, and the dispersion effect is better; The dispersing effect of the medicine is achieved by the rotation of the fogging disc, which often requires a closed box to form a closed space to avoid the meaningless drift of the mist medicine, but the formation of the closed environment often causes problems such as fogging The working environment of the disc is poor, so it is easy to send product failures, it is impossible to realize the intuitive observation of the slurry mixing process, and it is difficult to find out the faults in time, which brings troubles to the on-site operation and maintenance work; in addition, the high-speed rotating fogging disc, The requirements for the speed of the drive motor are too high, that is, a secondary motor with a speed of up to 3000 rpm must be used to ensure its working performance, which poses severe challenges to the actual assembly, purchase and maintenance costs.

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