Fragmentation method and equipment for realizing layered mineral dissociation

Abstract

The invention belongs to the technical field of mineral crushing and production, and discloses a crushing method and device for achieving layered dissociation of layered minerals. The method comprises the steps that the layered minerals are placed on a horizontal table face, acting force F is applied to the layered minerals, the included angle between the acting direction of the acting force F and normal of the horizontal table face is theta, the formula: f*F*sintheta>F*costheta is achieved, and therefore no sliding friction occurs between the layered minerals and the horizontal table face; at the moment, the layered minerals transfer shearing force in the layer direction layer by layer, and acting force F applied to the layered minerals is gradually increased; and when shearing force applied to the interlayer of the layered minerals is larger than binding force of the interlayer of the layered minerals, the layered minerals do dislocation movement, layered cleavage of the layered minerals is broken, and layered stripping of the layered minerals is achieved, wherein f is the friction coefficient between the layered minerals and the horizontal table face. The large sheet state of the layered minerals can be effectively separated and protected, and therefore the purposes of increasing the addition value of minerals and reducing the mineral separation cost are achieved.

Description

technical field [0001] The invention belongs to the technical field of mineral crushing production, and in particular relates to a crushing method and equipment for realizing layer-by-layer dissociation of layered minerals. Background technique [0002] In the prior art, the conventional crushing method has no selectivity to the direction of force applied to layered minerals, resulting in the destruction of large sheets of layered minerals during the crushing process of layered minerals, that is, large sheet minerals are broken into fine flakes, and over-crushing leads to The economic value of minerals decreases, and the cost of beneficiation increases. [0003] as attached figure 1 and figure 2 As shown, they are the schematic diagram of the movement of the conventional jaw crusher mechanism and the schematic diagram of the force of the mineral in the jaw crusher. The direction of the force depends on the position of the contact point between the mineral falling into th...

AI Technical Summary

Problems solved by technology

[0005] Therefore, metallic ores generally have relatively high hardness, and a large enough inertial impact force must be applied to the ore during the crushing process to make it crushed; while non-metallic minerals such as mica, which are layered and cleaved, generally have low hardness and can be crushed in a huge Under the action of inertial impact force, the flaky morphology of minerals is severely damaged, so the above two conventional crushing techniques will cause serious over-crushing of layered minerals.

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