Anshan type lean magnetite underground ore dressing and filling method

A beneficiation method and underground mine technology, which are applied in the fields of filling, chemical instruments and methods, magnetic separation, etc., can solve the problems of consuming large energy and time, restricting the development of mines, and occupying a large area, so as to reduce the hidden dangers of production safety and , Conducive to sustainable development, saving energy and time

Active Publication Date: 2012-11-14
安徽大昌矿业集团有限公司
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Problems solved by technology

[0002] The beneficiation and filling process is an important part of mine construction. The traditional beneficiation and filling processes are all built on the surface and occupy a large area. The waste water, waste gas and waste residue produced in the production process have serious environmental pollution. Some It even causes secondary pollu

Method used

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Embodiment Construction

[0020] A kind of Anshan type lean magnetite underground mineral processing method, comprises the following operation steps:

[0021] 1) The raw ore from the stope is pre-crushed by the jaw crusher in sequence, and the ore discharge particle size is required to be no more than 200mm. The crushed product enters the hydraulic cone crusher for crushing, and the crushed product enters the sieve, and the sieve The product particle size greater than 40mm returns to the hydraulic cone crusher for crushing again, and the product with a particle size of less than 40mm under the sieve enters the magnetic pulley to screen and throw out the waste rock. The grade of the medium magnetic iron is lower than 0.5%, and the dry-throwed waste rock is transported to the aggregate bin of the filling station by a belt conveyor; the useful mineral products enriched by the magnetic pulley with a grade of 25-35% enter once The high-pressure roller mill is crushed, and the crushed product enters the ...

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Abstract

The invention discloses an Anshan type lean magnetite underground ore dressing and filling method, comprising the following steps of: 1) sequentially crushing the raw ore from a stope by a jaw crusher in advance, wherein the ore discharge granularity is required to be not larger than 200mm, crushing the crushed products in a hydraulic cone crusher, screening the crushed products, returning the oversize products of which the product grain sizes are larger than 40mm back to the hydraulic cone crusher to be crushed again, screening the crushed products, and returning the oversize products of which the product grain size are larger than 40mm back to the hydraulic cone crusher to be crushed again; and 2) screening the valuable minerals which are separated in a scattering way, returning the oversize products back to a primary high-pressure roller mill to be crushed, crushing the undersize products of which the product grain size are less than 12mm in a secondary high pressure roller mill, and carrying out wet screening on the crushed products. According to the method, the ore dressing technological process of the mine are carried out underground and the filling station are built underground, and the method directly carries out the ore dressing on the exploited raw mine and fills a gob on the spot.

Description

technical field [0001] The invention mainly relates to a method for harmless mining and utilization of magnetic iron mines, in particular to an Anshan type lean magnetite underground mineral processing and filling method. Background technique [0002] The beneficiation and filling process is an important part of mine construction. The traditional beneficiation and filling processes are all built on the surface and occupy a large area. The waste water, waste gas and waste residue produced in the production process have serious environmental pollution. Some It even causes secondary pollution to the environment, which is not conducive to environmental governance; on the other hand, because the raw ore needs to be lifted to the surface to be broken and sorted, the ore is always reprinted and hoarded on the ground, which not only consumes a lot of energy and time but also brings A series of new problems restricting the development of mines. Contents of the invention [0003] T...

Claims

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Application Information

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IPC IPC(8): B02C21/00B02C23/08B03C1/00E21F15/00
Inventor 王志良胡广国柴延森吉少清高军燕张宪宝吉少波李启友吉少杰张建芳
Owner 安徽大昌矿业集团有限公司
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