An experimental device suitable for flocculation strengthening of fine-grained hematite

Abstract

The invention discloses a flocculation-intensifying experimental device suitable for micro-fine-particle hematite. The flocculation-intensifying experimental device comprises a conical cyclone classification chamber and a flocculation device with an externally-arranged magnetic field source; the conical cyclone classification chamber is provided with two cones, and it is achieved that minerals are classified according to the particle size under the effect of spiral ascending flow; as an arranged short-diameter cyclone blade and an arranged long-diameter cyclone blade correspond to different cone cavities, the separating and density classification effects of fluidized beds on the minerals are achieved; separation of clay minerals and the hematite is finally completed, the influence of micro-fine mud on flocculation can be avoided, the flabby floccule problem caused by different-density-thickness particles can be solved, and a primary guarantee is provided for intensifying micro-fine hematite flocculation; as the flocculation device with the externally-arranged magnetic field source is provided with an antipode-type magnetic system and a hollow magnetic pole head structure, it is guaranteed that the hematite is distributed in the middle of a flocculation cavity, the externally-arranged magnetic field is capable of overcoming energy barriers of the particles and enlarging particle-surface electric potential absolute values to improve the electrostatic repulsion effect between the particles, and micro-fine-particle hematite flocculation is intensified again.

Description

technical field [0001] The invention relates to an experimental device capable of strengthening the hydrophobic flocculation effect of fine-grained hematite. The device belongs to the technical field of fine-grained hematite separation and is also beneficial to theoretical research on coal slime water flocculation strengthening. Background technique [0002] Hematite resource reserves are relatively large in my country, accounting for about 2 / 3 of iron ore resources, but there are few rich ore, many lean ore, and low industrial application value; in order to alleviate the industry's demand for iron ore resources, hematite mineral processing technology has been rapidly develop. However, since this type of hematite is mostly of fine dissemination type, the prerequisite for the implementation of high-efficiency separation technology must be finely ground hematite minerals until the monomers are fully dissociated, that is, the degree of dissociation reaches 80% to 90%, and it oft...

AI Technical Summary

Problems solved by technology

At the same time, the external magnetic field can overcome the energy barrier of the particles in the flocculation process, enhance the repulsion energy between particles, and increase the absolute value of the surface potential of the particles to improve the electrostatic repulsion between particles, so it is possible to strengthen the flocculation effect of fine hematite

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