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Method for raising iron content and reducing silicon in concentrate by means of low-intensity magnetic separation process

A weak magnetic separation and process technology, applied in chemical instruments and methods, wet separation, solid separation, etc., to achieve the effects of advanced equipment, simple process and significant economic benefits

Inactive Publication Date: 2013-12-18
安徽大昌矿业集团有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for increasing iron and reducing silicon in a weak magnetic separation process, so as to solve the problems existing in flotation (reverse flotation) in the prior art in terms of increasing iron and reducing silicon

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  • Method for raising iron content and reducing silicon in concentrate by means of low-intensity magnetic separation process

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Embodiment Construction

[0017] Such as figure 1 shown. A method for raising iron and reducing silicon by a weak magnetic separation process, comprising the following steps:

[0018] (1) The 550-0mm raw magnetite is conventionally crushed in three stages of coarse, medium and fine in the crusher, and two magnetic pulleys are added in the coarse crushing and medium crushing circuits, and one magnetic pulley is added in the fine crushing circuit. The magnetic pulley in the coarse crushing circuit is used to throw away the waste rock mixed in the raw ore, and the magnetic pulley in the medium and fine crushing circuits is used to throw away the large gangue that has been dissociated after crushing. The raw ore enters the cylindrical ore storage silo, and the raw ore from the cylindrical ore storage silo is screened by double-layer vibrating. The products on the screen with a particle size of >30mm are returned to fine crushing, and the products under the screen with a particle size of ≦30mm enter the hi...

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Abstract

The invention discloses a method for raising iron content and reducing silicon in concentrate by means of a low-intensity magnetic separation process. Aimed at the problems of floatation (reverse flotation) in the prior art in terms of raising iron content and reducing silicon in concentrate, a magnetic field screening method for separation and corresponding crashing and grinding process and equipment are adopted in order to achieve the goal of raising iron content and reducing silicon in concentrate. The method has the advantages of simple process, advanced equipment, low operating cost and remarkable economic benefit.

Description

technical field [0001] The invention relates to the field of magnetite beneficiation methods, in particular to a method for increasing iron and reducing silicon through a weak magnetic separation process. Background technique [0002] Anshan-style magnetite-poor ore resources are generally in a typical banded structure, black magnetite and white quartz bands alternate in parallel, and the thickness of the interlayer is 1-3mm. The useful minerals and gangue minerals have no close symbiotic relationship and are easy to dissociate. In terms of technology and equipment research and application, the "iron extraction and silicon reduction" of using magnetite ore to produce iron concentrate can be generally divided into two categories: magnetic separation and (reverse) flotation. Although the use of flotation or reverse flotation to increase iron and reduce silicon can achieve certain effects, the resulting drug consumption and power consumption are as many as millions, and the flo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B1/00
Inventor 王志良吉少杰吉少清吉少波柴延森何永进李启友
Owner 安徽大昌矿业集团有限公司
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