An integrated refractory fine coal slurry mixing equipment

Abstract

The invention relates to the field of coal slurry pretreatment, in particular to an integrated refractory fine coal slurry adjustment equipment. The equipment includes a mixing box; the drive shaft is arranged vertically in the inner cavity of the mixing box, and the electric field activation layer, ultrasonic vibration layer and forced stirring layer are arranged in the inner cavity of the mixing box from top to bottom along the length direction of the drive shaft; The air box and the pressurized dissolved air box are arranged with an air inlet pipe for feeding high-pressure air, and the inlet end of the box body used to communicate with the outlet of the mixing box is arranged with a feed compartment for realizing the opening and closing of the inlet end. The feed partition is fastened with a tension spring and leans against the inlet end to close the inlet end; the outlet end of the box is connected to the flotation machine, and the outlet end is arranged to realize the opening and closing of the outlet. Partition, the discharge partition is tensioned by a compression spring and closes the outlet end. The invention can play a very good conditioning effect on the floating coal slime, and is especially suitable for the pulping and upgrading requirements of the difficult-to-float fine-grained coal, and has high working efficiency and quick and convenient pretreatment process.

Description

technical field [0001] The invention relates to the field of coal slurry pretreatment, in particular to an integrated refractory fine coal slurry conditioning equipment for slurry conditioning and upgrading of high-ash refractory fine-grained coal slime. Background technique [0002] Because the buoyancy of coal slime in our country is generally poor, coal slurry pretreatment is an indispensable link in the flotation coal preparation process, and it is a prerequisite for the flotation machine to obtain good technical and economic indicators. The necessity of coal slurry pretreatment mainly includes the following four points: 1) Fully disperse the flotation agent (non-polar oil collector and foaming agent), 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) Mix the dispersed flotation agent well into the floating coal slurry, and the no...

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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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