Process for extracting material from mineral waste material by high-intensity magnetic field gradient

A magnetic field gradient and mineral waste technology, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve problems affecting the refining process, insufficient extraction strength, and poor quality of extracts, achieving good economic benefits and strong throughput capacity , the effect of fast extraction speed

Inactive Publication Date: 2005-06-08
蔡瑾 +1
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Problems solved by technology

[0002] In the mining material selection industry, the low magnetic field gradient technology has been used for many years, mainly used to screen minerals with strong magnetic properties. However, if this method is still used to extract effective materials from mineral waste, there are two limitations: First of all, in mineral waste, many useful substances are small in size, some of them are very weak in magnetism, and many useful substances are small in size and weak in magnetism. Secondly, when the mineral waste contains impurities with similar magnetic properties, due to the poor selectivity of this method, the quality of the useful extract will deteriorate, and as a result, the content of impurities will increase, which will affect the subsequent refining process. , which limits the effectiveness and value of the product

Method used

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  • Process for extracting material from mineral waste material by high-intensity magnetic field gradient

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Experimental program
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Effect test

Embodiment 1

[0022] Take the extraction of titanium concentrate from iron ore waste as an example:

[0023] First set up a strong magnetic field area, which generates 4×10 6 The magnetic field strength of A / m (together with 5 Tesla), and the secondary magnetic pole device is set in the area. The device is made of strong magnetic stainless steel and takes the form of an array of metal wires. The metal wires are made of wire mesh or metal wool. The diameter of the wire is selected according to the particle size of the ilmenite component in the mineral waste, and the optimal stacking factor of the secondary magnetic pole array is below 15%. The device with this structure can generate a magnetic field gradient on the order of 100,000 Tesla / m.

[0024] This type of iron ore waste usually contains titanium concentrate and various silicate substances containing magnetite. Titanium concentrate is a kind of permanent magnetic substance. In some cases, it is weakly and strongly magnetic because the...

Embodiment 2

[0028] Taking the extraction of impurities from the titanium concentrate extracted from embodiment 1 is an example:

[0029] Set a strong magnetic field area, which produces 1.2×10 6 The magnetic field strength of A / m (1.5 Tesla), and the secondary magnetic pole device is set in the area. The device is made of strong magnetic stainless steel and takes the form of an array of metal wires. The metal wires are made of wire mesh or metal wool. The diameter of the wire is selected according to the particle size of impurities in the titanium concentrate, and the optimal stacking factor of the secondary magnetic pole array is below 15%. The device with this structure can generate a magnetic field gradient of the order of 100,000 Tesla / m.

[0030] The extracted titanium concentrate is mixed in water, and the material is sent to and passed through the secondary magnetic pole device by the conveying pipeline. When the material passes through the secondary magnetic pole device, the impur...

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Abstract

A process for extracting useful material from the rejected ore powder by high-intensity gradient magentic field includes such steps as creating a strong magnetic field (at least 6X10 to the power 5 A/m), arranging a secondary magnetic pole unit in said magnetic field, making the rejected ore powder flow through said magnetic field, and recovering said useful material from the secondary magnetic pole unit.

Description

technical field [0001] The invention relates to a method for extracting materials, in particular to a method for extracting materials from mineral waste by using a high-intensity magnetic field gradient. Background technique [0002] In the mining material selection industry, the low magnetic field gradient technology has been used for many years, mainly used to screen minerals with strong magnetic properties. However, if this method is still used to extract effective materials from mineral waste, there are two limitations: First of all, in mineral waste, many useful substances are small in size, some of them are very weak in magnetism, and many useful substances are small in size and weak in magnetism. Secondly, when the mineral waste contains impurities with similar magnetic properties, due to the poor selectivity of this method, the quality of the useful extract will deteriorate, and as a result, the content of impurities will increase, which will affect the subsequent re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/32
Inventor 白保罗
Owner 蔡瑾
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