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Beneficiation of titanium bearing materials

A technology of anatase and beneficiation method, applied in the direction of titanium compound, titanium dioxide, improvement of process efficiency, etc., can solve the problems of low yield, being extracted, etc.

Inactive Publication Date: 2018-01-02
ILUKA RESOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EP 0475104 also discloses the dissolution of TiO in the residue 2 Cannot be extracted under the usual conditions of the kraft process, so it is usually discharged or recycled to the pulping process for further extraction, although low yield

Method used

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  • Beneficiation of titanium bearing materials
  • Beneficiation of titanium bearing materials
  • Beneficiation of titanium bearing materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] The rutile and anatase concentrates were ground and mixed with concentrated sulfuric acid at a mass ratio of 1.5 acid to 1 ore. The resulting mixture was baked at 250°C for 8 hours to produce sulfate lumps. The lump was dissolved with 10% sulfuric acid to produce a titanium sulfate solution. Results A total of 98% anatase, 92% rutile and 92.0% total TiO were extracted 2 , Feed and dissolved residue analysis are shown in Table 1.

[0103] Table 1 Feed and residue analysis of Example 1

[0104]

[0105]

Embodiment 2

[0107] Rutile and anatase concentrates were ground and mixed with concentrated sulfuric acid at a mass ratio of 1.5 acid to 1 ore, and the resulting mixture was baked at 250°C for 4 hours to produce sulfate lumps, which were Dissolving with 10% sulfuric acid to produce a titanium sulfate solution resulted in a total extraction of 98% anatase, 84% rutile and 86.7% total TiO 2 . Feed and dissolved residue analysis are shown in Table 2.

[0108] Compared to Example 1, the apparent reduction of the baking duration has no significant effect on the recovery of anatase, but the recovery of rutile is slightly lower.

[0109] Table 2 Feed and residue analysis of Example 2

[0110]

[0111]

Embodiment 3

[0113] Rutile and anatase concentrates were ground and mixed with concentrated sulfuric acid at a mass ratio of 1.2 acid to 1 ore, and the resulting mixture was baked at 220 °C for 12 hours to produce sulfuric acid lumps. Dissolving the lumps in water to create a titanium sulfate solution resulted in the extraction of a total of 98% anatase, 85% rutile and 84.4% total TiO 2 . Feed and dissolved residue analysis are shown in Table 3.

[0114] Relative to Example 1, similar to Example 2, a decrease in acid and temperature but an increase in duration resolved the rutile recovery, but did not substantially affect the anatase recovery.

[0115] Table 3 Feed and Residue Analysis of Example 3

[0116] substance

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Abstract

This invention relates to the beneficiation of titanium bearing materials having a substantial component of anatase and / or rutile and / or pseudorutile structure. Such materials include anatase ores andminerals and other sources of anatase, as well as blends or mixtures that include traditional sources of titanium and titanium dioxide such as ilmenite and titanium slag. The invention is of particular, though not exclusive, interest in the processing of anatase materials to titanium dioxide of pigment quality. The process is additionally effective in processing materials having a substantial component of anatase or rutile, e.g. leucoxene.

Description

field of invention [0001] The present invention relates to the beneficiation of titanium-containing materials containing a large amount of anatase and / or rutile and / or pseudorutile structural components. These materials include anatase ores and minerals and anatase from other sources, and blends or mixtures including titanium and titanium dioxide from conventional sources, such as ilmenite and titanium slag. The present invention is particularly, but not exclusively, of interest to the processing of anatase materials to pigmentary quality titanium dioxide. The process is also effective for processing materials with large anatase or rutile components, such as leucite. Background of the invention [0002] One of the two conventional processes for obtaining pigmentary grade titanium dioxide from titanium-containing ores and other materials such as titanium slag is the so-called sulfate process invented in the early 20th century. In this process, ilmenite ore or titanium slag ...

Claims

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Application Information

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IPC IPC(8): C01G23/053C22B34/12C22B3/08C22B3/20
CPCC01G23/008C01G23/0532C22B3/44C22B34/125Y02P10/20
Inventor N·G·伯纳德V·E·雨果S·F·罗兰兹C·M·S·鲁德
Owner ILUKA RESOURCES
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