A grinder and grinding method thereof

Abstract

The invention discloses a disintegrating machine. A grinding base is designed into a 'herringbone' shape; the outer edge of the grinding base is at least provided with a fixed grinding ring; a rotary suspension arm is fixed on the outer wall of the upper end of a main shaft; the outer ring of the rotary suspension arm is provided with at least one movable grinding ring and a screen; at least two grinding rollers are installed on the inner and outer rings of a rotary body at equal angles and are of horizontal 'herringbone' shapes; the fit clearance of the grinding rollers and the grinding base is high in exterior and low in interior; the grinding base is low in taper; the grinding rollers are high in taper; the axes of the grinding rollers horizontally warp so as to form an inverted herringbone shape and form four sealed 'herringbone'-shaped structures integrally on a plane; the lower sections of baffles for charging regularly on rotary bodies between the grinding rollers are provided with rough segmentation plates in an arc-shaped mode; inner scraping plates are fixed on inner rings at the lower ends of the rotary bodies; the upper ends of the rotary bodies are provided with charge hoppers; the charge hoppers are internally provided with screens; charge and distributing cones are arranged in the charge hoppers, and thus, a classifier is omitted, no processing dead angle exists, the re-disintegrating rate and excessive-disintegrating rate are low, and energy sources are saved; the rotation speed is accelerated, that is, the production efficiency is enhanced, and the efficiency is high; the disintegrating machine is high in operability, and is especially suitable for mineral separation for metal mine.

Description

[0001] Technical field: [0002] The invention relates to a mining machine and a method thereof, in particular to a crushing machine for crushing ore and a crushing method thereof. [0003] Background technique: [0004] At present, the ore excavated from gold mines in my country needs to be crushed and ground before entering the flotation machine for mineral processing; ball mills are generally used for crushing and grinding. The ball mill is composed of a horizontal cylinder, a hollow shaft for feeding and discharging materials, and a grinding head Composition, the cylinder is a long cylinder, the cylinder is equipped with a grinding body, the cylinder is made of steel plate, and the steel liner is fixed with the cylinder, the grinding body is generally a steel ball, and it is loaded according to different diameters and a certain proportion. In the barrel, the grinding body can also be forged with steel, which is selected according to the particle size of the grinding material....

AI Technical Summary

Problems solved by technology

[0006] 1. Since the rotating speed of the ball mill cylinder is very low (15-25 revolutions per minute), if it is driven by an ordinary motor, it needs to be equipped with an expensive reduction device. Therefore, the configuration of the ball mill is quite expensive

[0007] 2. Since the grinding body is also subject to grinding and stripping while impacting and grinding the material, the lining plate and other parts in the cylinder are also ground and stripped, and the amount of iron plates consumed is a lot. Therefore, the production cost is high

[0008] 3. Since the ball mill consumes nearly 2 / 3 of the electricity of the whole plant during the production process, according to the test, the power consumption of the input power of the ball mill for crushing materials (doing useful work) only accounts for a small part, which is 5% to 7%. However, most of the electric energy is converted into heat energy and sound energy and disappears, and the work of feeding and crushing is not divided into coarse and fine grains. Therefore, the effective utilization rate is low, the waste of electric energy is large, and the work efficiency is low.

[0009] 4. Since the total weight of the ball mill ranges from tens of tons to hundreds of tons, the size is heavy, so it is inconvenient to transport, troublesome to install, and expensive

[0010] 5. The ore after ball milling needs to be equipped with a classifier to classify the ore. The ore with large particles will also enter the ball mill for ball milling, and the particles that meet the requirements will enter the flotation machine for flotation. Therefore, the enterprise has many production equipment and increases Production cost, incomplete ball milling

[0011] At present, there is no equipment in the market that does not use a classifier and the ground ore directly enters the flotation machine for flotation.

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