Method for precipitation of microparticles in suspension liquid
A technology of suspension and microparticles, applied in separation methods, chemical instruments and methods, precipitation separation, etc., can solve the problems of difficult natural precipitation of microparticles, low settling velocity, and difficulty in solid-liquid phase separation
Inactive Publication Date: 2015-04-01
JIANGXI MASHAN CHEM
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Problems solved by technology
[0003] However, when the microparticles constituting the suspension are too small, such as less than 1um, the sedimentation velocity w is very small, and due to the Brownian motion of the liquid phase (such as water) molecules, it is difficult for the microparticles to settle naturally or it takes a long time to settle, thus Solid-liquid phase separation becomes very difficult
Method used
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Embodiment 1
[0016] Embodiment 1: activated clay with porous surface, particle diameter is 0.075mm, specific gravity is 2;
Embodiment 2
[0017] Embodiment 2: activated clay with porous surface, particle diameter 0.9mm, specific gravity is 3;
Embodiment 3
[0018] Embodiment 3: slag with a porous surface, a particle size of 0.4mm, and a specific gravity of 2.2;
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Abstract
The invention discloses a method for precipitation of microparticles in a suspension liquid. The method is characterized by precipitating microparticles by adding a precipitation carrier, wherein the precipitation carrier is a solid and has good surface adsorption property, and the specific weight of the precipitation carrier is 2-3 times of that of liquid phase components in a suspension liquid; the precipitation carrier is a surface porous material; and the precipitation carrier is activated clay or slag, and has the size of 0.075-0.9 mm. The method disclosed by the invention has the advantages of achieving the purpose of rapidly precipitation separation of suspension materials by mechanically or pneumatically mixing a microparticle suspension system added with a certain proportion of precipitation carrier to enable the precipitation carrier and the microparticles fully contact and the precipitation process is generated quickly when the suspension system statically stands after the mixing is stopped, and greatly accelerating the sedimentation speed after the precipitation carrier is added in the presence of a flocculant.
Description
technical field [0001] The invention belongs to the technical field of particle separation, and in particular relates to a method for settling fine particles in a suspension. Background technique [0002] All walks of life will encounter the problems of sedimentation, clarification and separation of suspensions. They are different from conventional colloids and emulsions. Due to the formation of an electric double layer on the surface of the particles, the particles are stably dispersed under the action of electrical force. In water, if it is difficult to settle, electrolyte ions can usually be added to destroy its stable electric double layer, causing the particles to collide with each other and agglomerate to increase the size of the particles and cause sedimentation. The suspension is generally heavier than water due to the specific gravity of solid particles. Under normal circumstances, it can naturally settle under the action of gravity. The classic Stokes (Stokes) law ...
Claims
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IPC IPC(8): B01D21/00C02F1/52C02F1/28
Inventor 党渭铭
Owner JIANGXI MASHAN CHEM