Micro-fine particle grade horizontal grinding device

Abstract

The invention concretely relates to a micro-fine particle grade horizontal grinding device. The grinding device is composed of a grinding chamber and a drive mechanism; the barrel installation center line of the grinding chamber is horizontal and the horizontal length in the barrel is 1.5-2.5 times of the inner circle diameter of the barrel and the inner surface of the barrel is abrasion resistance material and the grinding medium (18) is filled into the barrel; the 5-8 agitating vanes (8) are vertically mounted on the main axle (6) coincident with the barrel center line and a material discharging device is set at the right downside of the left end of the barrel and a material feeding port (7) is set on the right upside of the right end of the barrel; the left end of the main axle (6) is mounted in a bearing liner (13) and the bearing linear (13) is fixed on the center of the left end cover (12) of the barrel and the right end of the main axle (6) passes through a bearing (2) and is connected with the motor by a shaft coupling (1); an accessory impeller (5) is mounted on the main axle (6) of the right side of the barrel. The material pulp of the device is brushed under the high-speed mobile grinding medium colliding, grinding action with features of simple start, large medium energy density and high grinding efficiency.

Description

technical field [0001] The invention belongs to the technical field of ore grinding equipment. In particular, it relates to a fine-grained horizontal grinding equipment. Background technique [0002] Before ore sorting, the method of ore grinding must be used to realize the monomer dissociation of minerals, and the monomer dissociation is realized by crushing and grinding. With the continuous mining of resources, the distribution of mineral resources in my country is becoming finer, the grade is depleting, and the composition is becoming more complex. In order to obtain a qualified concentrate grade, the dissociation of individual minerals is a necessary condition for mineral separation. Taking the hematite in western Hubei in my country as an example, in order to obtain a sufficient dissociation degree, the ore must be ground to about ten microns. The traditional method is to use a ball mill for grinding, but its energy consumption is huge, accounting for almost 60% of th...

AI Technical Summary

Problems solved by technology

The traditional method is to use a ball mill for grinding, but its energy consumption is huge, accounting for almost 60% of the energy consumption of the beneficiation plant, so the energy consumption for ore grinding is increasing year by year

[0003] At present, the fine-grained ore grinding equipment used in large-scale industry is a ball mill. Its disadvantage is that the movement of the medium depends on the rotation of the cylinder, and the movement speed of the medium is limited by the critical speed of the cylinder.

Therefore, the energy input to the medium for grinding is low, and the installed power of a general ball mill is 20-30KW / m 3 , most of the input power is used to maintain the rotation of the cylinder, and the power coefficient used to lift the medium to produce pulverization is low. Therefore, on the one hand, the energy utilization rate is low, and on the other hand, the volume of the ball mill is large.

Another kind of fine-grain grinding equipment is the vertical stirring mill, which changes the driving mode of the medium and relies on rotating blades and rods to drive the medium. Its fine-grain crushing effect is better than that of a ball mill, but its disadvantages are:( 1) Since all media are vertically pressed on the agitator, it is necessary to overcome the resistance generated by all media from standstill to start, so it is difficult to start; (2) The rotation of solid-liquid two-phase flow will produce a parabola, and the medium may not be able to reach the parabola. some places, thus creating a dynamic dead angle

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