High-argillization coal washing agent

Abstract

The invention discloses a high-argillization coal washing agent. The high-argillization coal washing agent is characterized by comprising a collecting agent, a foaming agent and a flocculating agent, wherein the collecting agent is 390-440g / t of N9883; the foaming agent is 400-430g / t of fusel; the flocculating agent comprises polyacrylamide and polymeric aluminum; the control concentration of the polymeric aluminum is 0.5-1.2 percent; the preparation concentration of the polyacrylamide is 0.1-0.15 percent; the usage of the polyacrylamide is required to be controlled to be 0.1-1 percent according to a volume ratio. Compared with the prior art, the high-argillization coal washing agent has the advantages that slime water is timely clarified, so that coal can be washed by clean water, slime is recovered, and the coal washing water is recycled.

Description

Technical field [0001] The invention relates to a coal washing agent with a high degree of muddyness. Background technique [0002] The composition of coal preparation plant tailing slime water is characterized by very fine particle size. According to the Stokes formula, the sedimentation speed of a particle is proportional to the square of its diameter. For example, for a particle with a diameter of 10 μm, the sedimentation speed is about 100 times that of a 1 μm particle. The smaller the particle size, the smaller the effect of gravity and the intensified Brownian motion, which promotes the particles to remain suspended. In the actual production of the coal preparation plant, in order to ensure the clean water washing of the coal and realize the closed circuit of the washing water, the treatment of the tailing slime water must find a method to strengthen the sedimentation of fine materials. [0003] At present, most of domestic coal preparation plants use flocculants to intensi...

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Problems solved by technology

If the coal washing water is not properly treated, it will directly lead to the collapse of the production system of the coal preparation plant

If the concentration of the coal washing water is too high, it will not be possible to wash the coal with clean water, which will inevitably lead to the failure of the closed-circuit circulation of the coal slime water, the failure of the coal preparation plant to reach the rated production capacity, the poor effect of the water spray for the de-intermediation, the excessive consumption of the medium, and the severe clean coal A series of serious problems such as the impact of hanging ash on the ash content, the pollution of the environment by the discharge of coal slime water, and the loss of coal slime

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