Mine dry-wet ball mill

Abstract

The invention relates to gold ore processing equipment, and specifically relates to a mine dry-wet ball mill. The mine dry-wet ball mill comprises a base, a transmission device, a crushing cavity, a charge cavity, a discharge cavity, a support seat, a rolling bearing, an overhaul cover, a discharge grid plate, a charge hopper and a dry-wet combined device, wherein the transmission device is located at the left side of the base, the crushing cavity is located in the right side of the transmission device, the charge cavity is located in one side of the crushing cavity, and the discharge cavity is located in the other side of the crushing cavity; and the discharge grid plate is located between the crushing cavity and the discharge cavity, and used for screening a gold ore powder entering thedischarge cavity. According to the mine dry-wet ball mill disclosed by the invention, a cylindrical roller cavity is changed into a spherical roller cavity, and the regular movement of a wear-resistant steel ball in the roller cavity is changed into irregular movement, so that gold ores can be collided in a plurality of directions, and a better crushing effect is achieved; and meanwhile, the minedry-wet ball mill disclosed by the invention can be automatically switched between a dry ball milling manner and a wet ball milling manner, so that the use range of the ball mill in a gold ore grinding process is expanded.

Description

technical field [0001] The invention relates to gold ore processing equipment in the mining industry, in particular to a mine-used dry and wet two-type ball mill. Background technique [0002] The ball mill is the key equipment for crushing the material after it is crushed. It is widely used in cement, silicate products, new building materials, refractory materials, chemical fertilizers, black and non-ferrous metal beneficiation and glass ceramics and other production industries. It can grind various ores and other grindable materials. According to the grinding It can be divided into dry and wet grinding methods; it can be divided into high-speed, medium-speed and low-speed ball mills according to the rotating speed. [0003] Among them, the ball mills used for gold ore grinding in the existing mining industry are generally only capable of dry ball milling or wet ball milling, and cannot perform arbitrary conversion between the two ball milling methods. A single type of bal...

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Problems solved by technology

[0003] Among them, the ball mills used for gold ore grinding in the existing mining industry are generally only capable of dry ball milling or wet ball milling, and cannot perform arbitrary conversion between the two ball milling methods. A single type of ball milling method limits the In view of the scope of use of the existing ball mill, a ball mill that can automatically switch between dry and wet ball milling methods is needed to improve the use of the ball mill in the gold ore grinding process.

[0004] At the same time, the ball mill barrel of the existing low-speed ball mill is generally cylindrical, or the middle part is cylindrical and the two sides are conical. When many steel balls move in the cylindrical drum, the steel balls move in a certain regularity. The ball can act as the grinding body in the ball mill cylinder. The materials to be ground are all heavy items, and the ball mill needs to rotate continuously under the working state, so the ball mill needs to be loaded with a very heavy weight in the whole working state.

However, the load-bearing device of the ball mill commonly used in production is only the bearing and the bracket fixed to the bearing, so the pressure of the ball mill cylinder as a whole on the bearing is relatively large, which causes greater friction between the shafts and bearings at both ends of the ball mill when the ball mill rotates. It not only consumes a large part of energy, but also easily generates a large amount of heat, and the wear of the bearing is large, resulting in an increase in the operation and maintenance cost of the bearing, which in turn reduces the service life of the bearing.

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