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Method for improving grade of ultra-lean ore

A high-grade, ultra-lean technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of difficult beneficiation and recovery, low content of useful elements, complex mineral composition, etc., to reduce the risk of shutdown, improve The grade of the ore and the effect of reducing the interference of slag such as impurities

Inactive Publication Date: 2019-03-22
会理秀水河矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This kind of ferrotitanium-containing tailings usually has fine particle size, low content of useful elements, complex mineral composition and large mud content, so it is very difficult to recover through mineral processing

Method used

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  • Method for improving grade of ultra-lean ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Test sample and representative

[0036] The raw ore samples from the Cizhuqing Mine in Xiushuihe, Huili County weighed about 50 kilograms in total, and were mainly powder ore.

[0037] The incoming sample is dried, sieved, mixed and shrunk to obtain 10Kg (original ore) of a comprehensive sample of -3mm to 0mm for testing, and another 40Kg ore sample is prepared as a sample.

[0038] 2. Raw ore particle size analysis and metal distribution

[0039] Raw TiO 2 The grade was 7.95%, and the TFe grade was 18.23% (of which the mFe grade was 6.27%).

[0040] The particle size of the raw ore is analyzed, and the +0.037mm particle size is screened, and the -0.037mm particle size is analyzed by water. The analysis results are shown in Table 1.

[0041] Table 1 Results of particle size analysis of raw ore

[0042]

[0043] The results of particle size analysis in Table 1 show that the raw ore TiO 2 The grade is 7.95%, the raw ore contains heavy mud, and the content of -...

Embodiment 2

[0054] 1. Material properties

[0055] Titanium magnetite, of which -74μm72.59%, -37μm54.46%.

[0056] 2. Test requirements

[0057] The concentration of the feed is 15%; desliming according to 74 μm and 37 μm respectively, the grade test data are shown in Table 1.

[0058] 3. Test results and discussion

[0059] (1) Composition of incoming material particle size

[0060] Granularity

-74μm / %

-45μm / %

test material

72.59

54.46

[0061] (2) Cyclone classification test data

[0062] 1) Cyclone desliming test

[0063]

[0064] 2) Metal grade analysis

[0065]

[0066] (3) Data analysis

[0067] 1) FX150-A cyclone bottom flow rate can be adjusted in a wider range, and the classification efficiency is higher. Both FX150-A and FX150-B cyclones can achieve better desliming effect, but the bottom flow rate of FX150-A cyclone is in the range of 30-58%, while the bottom flow rate of FX150-B cyclone is 41%. ~58% range. Under the condition...

Embodiment 3

[0073] The FX150-A cyclone determined in Examples 1 and 2 was used for desliming according to condition three.

[0074] 1) The raw ore is subjected to open-circuit rubbing and washing treatment with a ball mill, and the obtained ore pulp is subjected to desliming treatment to obtain desliming ore pulp;

[0075] 2) The deslimed ore slurry is ground to obtain a first-level deslimed ore slurry; the particle size of the ore after the grinding is analyzed to be -10 μm78.3%;

[0076] 3) The first-stage desliming slurry is subjected to first-stage magnetic separation to obtain coarse concentrate, and the tailings are discarded; the magnetic induction intensity of the first-stage magnetic separation is 0.1T;

[0077] 4) The coarse concentrate is ground to obtain secondary desliming slurry; the particle size of the ore after grinding is -10μm85% by analysis;

[0078] 5) The secondary desliming slurry is subjected to secondary magnetic separation to obtain iron coarse concentrate and s...

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Abstract

The invention relates to a method for improving the grade of ultra-lean ore. The method comprises the following steps: 1) raw ore is subjected to open-circuit rubbing and washing by using a ball mill,and the obtained ore pulp is deslimed to obtain deslimed ore pulp; 2) the deslimed ore pulp is ground to obtain first-grade deslimed ore pulp; 3) the first-grade deslimed ore pulp is subjected to first-stage magnetic separation to obtain rough concentrate, and the tailings are discarded; 4) the rough concentrate is ground to obtain second-grade deslimed ore pulp; 5) the second-grade deslimed orepulp is subjected to second-stage magnetic separation to obtain iron rough concentrate and tailings of second-stage magnetic separation; 6) the iron rough concentrate is ground and subjected to third-stage magnetic separation to obtain iron concentrate and tailings of third-stage magnetic separation; and 7) the tailings of second-stage magnetic separation and the tailings of third-stage magnetic separation are ground and subjected to fourth-stage magnetic separation to obtain titanium concentrate, and the tailings are discarded. The method utilizes a depreciated resource and uses the ball millto deslime ilmenite with high mud content firstly; and compared with the existing traditional desliming device, the ball mill has better effect and can avoid blocking.

Description

technical field [0001] The invention relates to the technical field of beneficiation, in particular to a method for improving the grade of ultra-lean ilmenite. Background technique [0002] Titanium resources have abundant reserves in my country, accounting for about half of the world's total reserves, most of which exist in the form of ilmenite. my country's ilmenite is mainly distributed in Sichuan and Hebei provinces, and also distributed in Qiong, Guangdong, Guangxi, Yunnan and other provinces. [0003] With the development of economy and society, the demand for titanium resources in various infrastructures in my country is increasing, and the shortage of high-quality titanium resources has become an indisputable fact. In order to meet the needs of the domestic titanium industry, my country needs to import millions of tons of titanium every year. mine. Due to the constraints of the mineral processing technology in the past, there are still a considerable amount of titan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B9/00
CPCB03B7/00B03B9/00
Inventor 李忠斌陈立民张国礼林玉明古彦刘文均江涛
Owner 会理秀水河矿业有限公司
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