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A beneficiation process of rock-type primary ilmenite

A technology of ilmenite and rock type, which is applied in the mineral processing field of rock type primary ilmenite to achieve the effect of comprehensive utilization of resources and simple process flow

Active Publication Date: 2017-08-11
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 and process cannot be fully applied to the processing of this rock-type primary ilmenite

Method used

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  • A beneficiation process of rock-type primary ilmenite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Composition of rock-type primary ilmenite ore processed: TiO 2 5.52%, Fe 12.36%, CaO 9.10%, 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 fine...

Embodiment 2

[0069] Composition of rock-type primary ilmenite ore processed: TiO 2 4.16%, Fe 10.41%, 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 produc...

Embodiment 3

[0082] Composition of rock-type primary ilmenite ore processed: TiO 2 6.94%, Fe 15.47%, 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 regrind pr...

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Abstract

The invention discloses a beneficiation process for rock-type primary ilmenite, which includes the steps of pre-treatment, weak magnetic separation, strong magnetic separation, classification and post-treatment. After the ferromagnetic minerals are removed, the weak magnetic separation tailings are obtained; the weak magnetic separation tailings are magnetically separated with a high gradient strong magnetic separator to obtain strong magnetic separation concentrates and strong magnetic separation tailings; the strong magnetic separation concentrates are classified , divided into coarse-grained products, medium-grained products, and fine-grained products; the final titanium concentrate and final tailings of the invention are obtained after post-processing. Aiming at the rock-type primary ilmenite ore that has not been used industrially at present, the present invention adopts the above-mentioned technical scheme for beneficiation, and the technological process is simple. The gravity separation and magnetic separation process flow adopted by the invention does not require any medicament, conforms to the national policy of clean production and circular economy, and achieves the goals of energy saving, emission reduction, consumption reduction and comprehensive utilization of resources.

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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Patent Type & Authority Patents(China)
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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