Beneficiation technology for rock-type primary ilmenite

An ilmenite and rock-type technology is applied in the field of beneficiation technology of rock-type primary ilmenite to achieve comprehensive utilization of resources and simple process flow.

Active Publication Date: 2015-11-18
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] For rock-type primary ilmenite, the current ilmenite beneficiation technology a

Method used

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  • Beneficiation technology for rock-type primary ilmenite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The composition of rock-type primary ilmenite ore processed: TiO 2 5.52%, Fe12.36%, CaO9.10%, MgO5.33%, Al 2 O 3 13.69%, SiO 2 45.87%.

[0057] Above-mentioned raw ore is passed through following processing steps:

[0058] (1) Crushing all the raw ore to -10mm;

[0059] (2) Grind the crushed ore in a closed circuit, and the fineness of the grinding product -0.074mm accounts for 50%;

[0060] (3) The grinding products are magnetically separated by a weak magnetic separator with a magnetic field strength of 0.2T. Weak magnetic separation tailings are obtained after removing ferromagnetic minerals by weak magnetic separation;

[0061] (4) The tailings of the weak magnetic separation are magnetically separated by a high-gradient strong magnetic separator. The strong magnetic separation process is one roughing, one sweeping, and one beneficiation. The background magnetic field strength is 1.0T. After regrinding, the ore returns to roughing, and the regrind product...

Embodiment 2

[0069] The composition of rock-type primary ilmenite ore processed: TiO 2 4.16%, Fe10.41%, CaO11.20%, MgO6.71%, Al 2 O 3 11.77%, SiO 2 46.92%.

[0070] Above-mentioned raw ore is passed through following processing steps:

[0071] (1) Crushing all the raw ore to -15mm;

[0072] (2) Grind the crushed ore in a closed circuit, and the fineness of the grinding product is -0.074mm, accounting for 70%;

[0073] (3) The grinding products are magnetically separated by a weak magnetic separator with a magnetic field strength of 0.2T. Weak magnetic separation tailings are obtained after removing ferromagnetic minerals by weak magnetic separation;

[0074] (4) The tailings of the weak magnetic separation are magnetically separated by a high-gradient strong magnetic separator. The strong magnetic separation process is one roughing, one sweeping, and one beneficiation. The background magnetic field strength is 1.2T. After regrinding, the ore returns to roughing, and the regrind ...

Embodiment 3

[0082] The composition of rock-type primary ilmenite ore processed: TiO 2 6.94%, Fe15.47%, CaO8.46%, MgO7.90%, Al 2 O 3 19.54%, SiO 2 36.37%.

[0083] Above-mentioned raw ore is passed through following processing steps:

[0084] (1) Crushing all the raw ore to -10mm;

[0085] (2) The crushed ore is ground in a closed circuit, and the fineness of the grinding product is -0.074mm, accounting for 60%;

[0086] (3) The grinding products are magnetically separated by a weak magnetic separator with a magnetic field strength of 0.15T. Weak magnetic separation tailings are obtained after removing ferromagnetic minerals by weak magnetic separation;

[0087] (4) The tailings of the weak magnetic separation are magnetically separated by a high-gradient strong magnetic separator. The strong magnetic separation process is one roughing, one sweeping, and one beneficiation. The background magnetic field strength is 1.0T. After regrinding, the ore returns to roughing, and the regr...

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Abstract

The invention discloses a beneficiation technology for rock-type primary ilmenite. The technology includes the steps of pretreatment, low-intensity magnetic separation, high-intensity magnetic separation, classification and aftertreatment. The method includes the specific steps that raw ore is completely crushed, and closed-circuit grinding is conducted; a low-intensity magnetic separator is used for conducting magnetic separation, and after a ferromagnetic mineral is removed, low-intensity magnetic separation tailings are obtained; the low-intensity magnetic separation tailings are subjected to magnetic separation through a high-gradient high-intensity magnetic separator, so that high-intensity magnetic separation concentrate and high-intensity magnetic separation tailings are obtained; the high-intensity magnetic separation concentrate is classified into a coarse fraction product, a medium fraction product and a fine fraction product; final ilmenite concentrate and final tailings of the beneficiation technology are obtained through aftertreatment. According to rock-type primary ilmenite ore which is not industrially used at present, the above technical scheme is used for beneficiation, and the technological process is simple. According to the reselection and magnetic separation technological processes, no drug is needed, the policy requirements of cleaner production and circular economy of China are met, and the purposes of energy saving, emission reduction, consumption reduction and comprehensive utilization of resources are achieved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and further belongs to the technical field of ore dressing, in particular to a beneficiation process of rock-type primary ilmenite. Background technique [0002] Titanium deposits with industrial value can be divided into two categories: magmatic titanium deposits (primary ore) and titanium placer deposits. The types of minerals contained in placer deposits can be divided into two types: rutile placer and ilmenite placer. Ilmenite placer deposits can be divided into weathering crust lateritic placer deposits and lakeside-river alluvial placer deposits. China's titanium resource reserves rank first in the world, but 95% of them occur in primary vanadium-titanium magnetite, mainly distributed in Panxi and Chengde regions; followed by ilmenite placer, mainly distributed in Yunnan, Hainan and Guangdong and Guangxi , the mines are scattered. Among them, the lower layer of the weathering crust la...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B1/00
Inventor 张曙光刘玫华陈献梅谢峰汤优优宋涛朱从杰杨玉珠闫森
Owner KUNMING METALLURGY INST
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