Pressurization gas dissolution type coal slime mixing device

Abstract

The invention relates to a pressurization gas dissolution type coal slime mixing device, and belongs to the technical field of coal slime flotation equipment. The pressurization gas dissolution type coal slime mixing device is used for coal slime flotation pulp mixing treatment. According to the technical scheme, the pressurization gas dissolution type coal slime mixing device comprises a pressurization bin, an ore pulp feeding jetting device, a stirring pulp mixing device and a pressure reduction discharging device; the pressurization bin is of a cylindrical structure, ellipsoid-shaped sealing heads are arranged at the two ends of the pressurization bin, the sealing head at the upper portion is connected with a barrel of the pressurization bin through a detachable flange, the sealing head at the lower portion and the barrel of the pressurization bin are welded, and the ore pulp feeding jetting device, the stirring pulp mixing device and the pressure reduction discharging device are all installed in the pressurization bin. According to the pressurization gas dissolution type coal slime mixing device, the characteristics of aerosol feeding, intense stirring and the like are kept, the gas dissolution time is prolonged, the gas dissolution pressure is improved, the process of microvesicle separation is highlighted, the coal slime mixing effect is strengthened, and adaptability of flotation equipment for inlet flotation ore pulp is strengthened. The pressurization gas dissolution type coal slime mixing device has the beneficial effects that the unit treatment capacity of the flotation equipment can be improved, and agent consumption is reduced; and the pressurization gas dissolution type coal slime mixing device is very suitable for flotation of low-rank coal slime with poor surface hydrophobicity and slime with large particle size.

Description

technical field [0001] The invention relates to a pressurized air-dissolved coal slime mixer used in the slurry mixing link of a flotation process, and belongs to the technical field of coal slime flotation equipment. Background technique [0002] Slurry conditioning is a single or combined action of mechanical stirring, electrochemical treatment, magnetization, ultrasonic waves, etc., to pretreat the slurry before coal slime flotation. The main purpose is to increase the difference in particle surface hydrophobicity. [0003] At present, the coal slurry mixing equipment mainly includes a slurry preparer, a slurry preprocessor, a powerful mixer and a surface modifier. However, during the process of use, it was found that these equipments have the following defects: ① There is no suitable theoretical basis in the large-scale process of the existing slurry mixing equipment, resulting in relatively poor slurry mixing effect of large-scale equipment; ② For low-rank coal slime wi...

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Problems solved by technology

However, during the process of use, it was found that these equipments have the following defects: ① There is no suitable theoretical basis in the large-scale process of the existing slurry mixing equipment, resulting in relatively poor slurry mixing effect of large-scale equipment; ② For low-rank coal slime with poor surface hydrophobicity and Coarse-grained coal slime, the existing equipment is difficult to effectively increase the difference in surface hydrophobicity between minerals, it is difficult to effectively increase the adhesion speed of target minerals and air bubbles in the coal slime, and reduce the desorption probability between target minerals and air bubbles, resulting in The flotation effects of these two kinds of coal slime are different; ③The hydrophobicity of the surface of the ore particles is changed only by a single method of chemical adsorption on the surface of the ore particles, and the chemical consumption is relatively high

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