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Titanium extraction method

A technology of carbon dioxide and mineral materials, which is applied in the field of titanium extraction, can solve the problems of low recovery rate, high cost, and long process, and achieve the effects of low production cost, increased output rate, and low material cost

Inactive Publication Date: 2011-12-07
大连富井合金厂
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Problems solved by technology

In addition, most of the existing industrial processes of gold ore beneficiation and smelting also have the disadvantages of using highly toxic chemicals or producing and discharging toxic substances in the process, which seriously pollute the environment, as well as long and complicated processes, low recovery rates, and high costs. Therefore, it is necessary to research and develop a gold extraction method with high recovery rate, low cost, non-toxic and environmental protection, which can replace the cyanidation method

Method used

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Embodiment 1

[0017] A kind of extraction method of titanium, its technological process is:

[0018] 1) Firstly, the ore to be refined is ground into ore powder. In this way, the precious metals to be extracted can be fully contacted when supercritical carbon dioxide is used for extraction. Therefore, it is preferable to carry out ultra-micronization treatment on the ore material to be refined, so that its fineness can reach the nanometer level. Generally speaking, since most of the mineral materials have relatively large particle sizes, it is best to go through a ball mill such as Raymond mill or a high-pressure roller mill for rough grinding to make a powder acceptable to ultra-fine equipment. According to the existing general ultra-fine equipment Requirements, the particle size of the feed powder is allowed below 1-2mm. In addition, according to the different working methods of ultra-fine equipment, for wet grinding equipment, the powder should be made into a slurry that meets its requ...

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Abstract

The invention discloses a method for extracting titanium, which comprises the following steps: grinding the ore material to be extracted into ore powder; putting the ore powder into a high-pressure reaction kettle, feeding carbon dioxide gas, and controlling the temperature and pressure to make the carbon dioxide reach supercritical At the same time, chemical co-solvent is added to increase its solubility in supercritical carbon dioxide, and it is selectively extracted; the carbon dioxide dissolved in the precious metal is filtered out, and the desired precious metal is obtained after the carbon dioxide gas evaporates. The invention utilizes the characteristics of carbon dioxide in a supercritical state to carry out continuous extraction treatment on precious metal ores such as refractory gold ores, and separates required precious metals from inorganic substances by category. Since no harmful substances are used and no toxic waste is discharged during the whole extraction process, the present invention is a completely non-toxic and environment-friendly technology, and the cost of materials used is low, and a rather high extraction efficiency can be achieved.

Description

technical field [0001] The invention relates to the field of refining rare metals, in particular to a method for refining titanium. Background technique [0002] Refractory metallurgical ores are ores that cannot extract gold by traditional nitriding methods. Carlin-type gold mines in the United States are typical refractory gold. Since the cyanidation method was applied to gold production in the 1880s, many gold deposits that are easy to cyanide have been mined in western industrialized countries for more than a hundred years, and most of the gold deposits that are still valuable for mining are found to be treated by cyanide method. If there is difficulty, gold cannot be effectively extracted by cyanide method. The reason why these ores are "difficult to leach" is that they contain organic matter such as carbon that can absorb gold, causing gold to be lost with the tailings, or gold particles are embedded in the crystals of carrier minerals (mainly arsenic, antimony and ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/12C22B1/00
Inventor 于勇
Owner 大连富井合金厂
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