Tungsten ore separation method

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

Active Publication Date: 2019-09-13
GANZHOU NONFERROUS METALLURGICAL RES INST
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tungsten ore separation method

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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Granularityaaaaaaaaaa
Densityaaaaaaaaaa
Densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of beneficiation, in particular to a tungsten ore separation method which comprises the following steps: crushing and sieving tungsten ore removal raw oreto obtain tungsten ore with the size fraction being 0.5-32 mm; mixing the tungsten ore with the size fraction being 0.5-32 mm with dense medium liquid to obtain to-be-separated ore pulp; utilizing a dense medium cyclone to separate the to-be-separated ore pulp to obtain heavy mineral; sieving the heavy mineral to obtain heavy mineral aggregates with the size fractions being -0.5mm and 0.5-32 mm separately; carrying out primary de-medium treatment on the heavy mineral aggregate with the size fraction being -0.5mm to obtain de-medium heavy mineral aggregate with the size fraction being -0.5mm; crushing the heavy mineral aggregate with the size fraction being 0.5-32 mm to obtain heavy mineral aggregate with the size fraction being -12 mm; and regarding the heavy mineral aggregate with the size fraction being -12 mm and the de-medium heavy mineral aggregate with the size fraction being -0.5mm as qualified ore. With adoption of the tungsten ore separation method, the yield of qualified oreis low, reduction of the following operating pressure is facilitated, operating times are reduced, and the production cost is reduced.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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