A kind of sorting method of tungsten ore

A sorting and tungsten ore technology, applied in chemical instruments and methods, solid separation, wet separation, etc., can solve the problems of high production cost, high operating pressure, and high qualified mineral yield

Active Publication Date: 2021-05-14
GANZHOU NONFERROUS METALLURGICAL RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, there is currently a lack of effective separation methods for minerals with a grain size of 0.5mm to 16mm in the rough separation and separation of tungsten mines, resulting in a high rate of qualified minerals. 35% to 50% of the original ore volume, which is relatively large, resulting in high pressure for follow-up operations and high production costs

Method used

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  • A kind of sorting method of tungsten ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] according to figure 1 The shown flow chart sorts tungsten ore, including the following steps:

[0041] Extract tungsten ore from raw ore (WO 3 content of 0.11%) was crushed to -32mm particle size, using a vibrating screen with an aperture of 0.5mm to classify it into -0.5mm particle size tungsten ore and 0.5-32mm particle size tungsten ore, and the 0.5-32mm particle size tungsten ore Transport it to the mine feeding tower, add a dense medium liquid with a specific gravity of 2.5 to 2.7 (wherein, the dense medium liquid is an aqueous solution of ferrosilicon medium, the particle size of the ferrosilicon medium is ≤0.1mm, and the density is 5.15g / cm 3 , 0.5 ~ 32mm particle size tungsten ore, water and ferrosilicon medium volume ratio is 2:5:3), to obtain the pulp to be selected, and then transport the pulp to Φ250 dense medium along the tangential direction at a pressure of 0.15MPa The separation process is carried out in the cyclone, and the obtained heavy minerals (mi...

Embodiment 2

[0047] Extract tungsten ore from raw ore (WO 3 content of 0.19%) to -32mm particle size, using a vibrating screen with an aperture of 0.5mm to classify it into -0.5mm particle size tungsten ore and 0.5-32mm particle size tungsten ore, and the 0.5-32mm particle size tungsten ore Transport it to the mine feeding tower, add a dense medium liquid with a specific gravity of 2.5 to 2.7 (wherein, the dense medium liquid is an aqueous solution of ferrosilicon medium, the particle size of the ferrosilicon medium is ≤0.1mm, and the density is 5.15g / cm 3 , 0.5 ~ 32mm particle size tungsten ore, water and ferrosilicon medium volume ratio is 2:5:3), to obtain the pulp to be selected, and then transport the pulp to Φ250 dense medium along the tangential direction at a pressure of 0.20MPa The separation process is carried out in the cyclone, and the obtained heavy minerals (minerals with a specific gravity greater than the heavy medium liquid) are discharged from the sand settling nozzle of ...

Embodiment 3

[0053] According to the method for embodiment 2, the raw ore (WO) of tungsten ore is extracted 3 content is 0.23%) for processing.

[0054] In the present embodiment, based on the original ore of tungsten ore, the productive rate of the qualified ore (that is, including -12mm grain size heavy mineral material and -0.5mm grain size de-medium heavy mineral material) is 21%. Qualified mine WO 3 The content is 0.99%, WO 3 The recovery rate was 90.39%.

[0055] It can be seen from the above examples that the method provided by the present invention can remove a large amount of tailings, reduce the yield of qualified ore, effectively simplify the process flow, and help reduce subsequent operation pressure, reduce operation shifts, and reduce production costs.

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Abstract

The invention relates to the technical field of mineral processing, in particular to a method for separating tungsten ore. The method provided by the invention includes the following steps: crushing and screening the tungsten ore out of the hole to obtain tungsten ore with a particle size of 0.5-32mm; The dense medium cyclone sorts the pulp to be beneficiated to obtain heavy minerals; sieves the heavy minerals to obtain -0.5mm grain size heavy mineral material and 0.5~32mm grain size heavy mineral material; Mineral materials are subjected to the first de-intermediation treatment to obtain ‑0.5mm-grained de-intermediation heavy minerals; 0.5-32mm-grained heavy minerals are crushed to obtain ‑12mm-grained heavy minerals; ‑12mm-grained heavy minerals and ‑0.5mm particle size de-medium heavy ore is qualified ore. The method provided by the invention has a low yield rate of qualified minerals, which is beneficial to reducing subsequent operation pressure, reducing operation shifts and reducing production costs.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for separating tungsten ore. Background technique [0002] At present, in the beneficiation of tungsten ore, especially black tungsten ore in my country, the raw ore from the hole is generally screened by 120mm grain size, and then the obtained -120mm (ie ≤ 120mm) grain size minerals are divided into 50-120mm, 27-50mm, 16-27mm Hand-selected by particle size classification, the resulting hand-selected concentrates of each particle size and -16mm particle size minerals are crushed to -12mm particle size as qualified ore and enter the next stage (ie, grinding and heavy section) for sorting. However, there is currently a lack of effective separation methods for minerals with a grain size of 0.5mm to 16mm in the rough separation and separation of tungsten mines, resulting in a high rate of qualified minerals. 35% to 50% of the raw ore volume of the hole, which is r...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B03B5/34
CPCB03B5/34
Inventor李振飞李平沈新春张婷袁亚君王强强李秀珍
OwnerGANZHOU NONFERROUS METALLURGICAL RES INST