Device and method for impacting mineral powder by adopting compressed gas to solve hardening of hopper mineral powder
A technology for compressing gas and mineral powder, applied in the fields of beneficiation and metallurgy, can solve the problems of the impact force of water flow, the difficulty of controlling the impact position of water flow, etc., and achieve the effect of obvious effect, simple operation and continuous feeding process.
Inactive Publication Date: 2014-12-10
CHINA NORTHERN RARE EARTH (GROUP) HIGH TECH CO LTD
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Problems solved by technology
There are generally two feeding methods, one is to use the hopper to feed the feeder, and the other is to use the water flow to impact the stockpile to connect the flow trough. Because the concentrate powder contains about 10% of water, the former is from the hopper to the feeder. During the feeding process, usually the concentrate powder at the bottom of the hopper will be subjected to the pressure of the upper concentrate powder and the lower support force, and finally form a compaction of the mineral powder at the bottom of the hopper, so that the hopper cannot be discharged; the latter is due to the impact of water flow, water flow It is difficult to control the size and impact position
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[0022] Example: further refinement of rare earth concentrate
[0023] At present, rare earth smelting and separation enterprises in the market require REO50% or more of rare earth concentrate grade, which requires further selection of low-grade rare earth concentrate. The feeding of the slurry adopts the method of connecting the hopper 3 to the screw feeder 4. Under the different rotating speeds of the screw feeder 4, different feeding amount control can be realized. When mineral powder compaction occurs, open the air hole 5 at the corresponding position. The advanced air valve can immediately solve the hardening problem, and the ore feeding process goes smoothly.
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The invention relates to a device and a method for impacting mineral powder by adopting compressed gas to solve hardening of hopper mineral powder, which are used for the size mixing recleaning of raw ore powder and concentrate ore powder or the feeding process of a smelting process of the concentrate ore powder, and belong to the field of beneficiation and metallurgy. The device comprises a hopper, wherein an air hole is formed in the hopper, and is connected with an air compressor through an air feeding pipeline; and a discharge port in the bottom of the hopper is connected with a feed port of a spiral feeder. The air hole is formed in the lower part of the hopper; and the compressed gas with the pressure of 0.5-1.2 Mpa is injected through dispersed high-pressure air holes with high pressure in the mineral powder easy hardening place to damage a hardened layer, so that the hardening of the hopper mineral powder is solved, and the continuity and uniformity of the feeding process can be effectively realized. The method has the advantages of easy operation and obvious effects.
Description
technical field [0001] The invention relates to a device and method for solving the hardening of hopper slag by using compressed gas to impact slag powder, which is used for feeding ore related to raw ore powder and concentrate powder, especially for pulping and re-election of raw ore powder and concentrate powder The smelting and feeding process of concentrate powder belongs to the field of ore dressing and metallurgy. technical background [0002] At present, due to the different technical levels of various mineral processing enterprises and market supply and demand, the purchased concentrate needs to be further selected to meet the smelting requirements. On the other hand, the concentrate feeding of some smelting enterprises also requires continuous and uniform concentrate powder. There are generally two feeding methods, one is to use the hopper to feed the feeder, and the other is to use the water flow to impact the stockpile to connect the flow trough. Because the conc...
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IPC IPC(8): B65D88/70B65G47/18
Inventor 王云飞陈宏超杨振华白志忠王新建
Owner CHINA NORTHERN RARE EARTH (GROUP) HIGH TECH CO LTD