Novel vertical roll mill with grinded powder outward-guide mechanism

Abstract

The invention relates to a novel vertical roll mill with a grinded powder outward-guide mechanism. The novel vertical roll mill comprises a vertical roll mill grinding disc, a powder selector rotor, static wind guide blades, a discharge cone, a charge chute and a roll mill drive device. The novel vertical roll mill is characterized by further comprising the grinded powder outward-guide mechanism, wherein the outward-guide mechanism is connected with the discharge cone of the vertical roll mill, and comprises a guide chute and a horizontal conveying mechanism; the guide chute is connected to the bottom of the discharge cone, the guide chute is communicated with the inner cavity of the discharge cone, and the lower end of the guide chute is inclined outwards to form an inclined slope; and the horizontal conveying mechanism is adjacent to the lower end part of the guide chute. Due to the above-mentioned structure, adjustment for the specific surface area of materials in a reasonable range is ensured; medium grains or finished products are guided out of the mill, thus material circulation is reduced, pressure loss in the mill is reduced, grinding efficiency is improved, energy consumption is saved, the wear of the grinding disc and grinding roll sleeves is reduced, and the lives of wear-resistant parts are prolonged; and the returned powder is easily finely grinded, and due to the reduction of the part of materials, the stability of a material layer is improved, and the vibration and noise of the mill are reduced.

Description

technical field [0001] The invention belongs to a novel vertical roller mill with a grinding powder exporting mechanism in the classification area of ​​a grinding system in industries such as building materials, electric power, mining, metallurgy, chemical industry, and metal mining. Background technique [0002] The vertical roller mill powder separator integrates crushing, drying, grinding, and grading conveying into one, with high production efficiency, and can grind block, granular and powder raw materials into required powder materials. The vertical roller mill adopts a dynamic and static combined high-efficiency cage-type powder separator, which can ensure that the specific surface area of ​​the material is adjusted within a reasonable range, and ensure that the finished material has a suitable particle distribution. It is an efficient grinding that uses the principle of material bed grinding technology. Energy saving equipment. [0003] In the original vertical rolle...

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Problems solved by technology

In the existing ore processing technology, the wet ball mill grinding system is widely used, but the grinding efficiency of the ball mill is low, the production energy consumption is high, and the grinding process requires a lot of water, which seriously wastes water resources. With the energy saving and emission reduction , environmental protection policies, this technology will be gradually eliminated; domestic and foreign ore grinding technology of dry grinding and dry separation has also been introduced one after another, among which the high-pressure roller mill has obvious energy-saving advantages, but this kind of equipment needs to be equipped with V-type Powder machine, dynamic powder separator, etc., the process system is relatively complex, the number of equipment configurations is large, the investment is high, and technology promotion is difficult

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