Method of extracting GaCl from carbonaceous mudstone

A carbonaceous mudstone and gallium chloride technology, applied in the field of gallium metal extraction, can solve the problems of unsuitable extraction and achieve the effects of low production cost, short and novel process flow, and easy operation and control

Inactive Publication Date: 2011-12-28
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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Problems solved by technology

[0007] However, these processes are mainly aimed at the extraction of gallium in fly ash and coal dust, while gallium in coal mine carbonaceous mudstone mainly exists in the form of humate, and a small amount of gallium and SiO in carbonaceous mudstone 2 、Al 2 o 3 Isomorphic symbiosis, the existing technology is not suitable for the extraction of gallium from carbonaceous mudstone in coal mines

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  • Method of extracting GaCl from carbonaceous mudstone
  • Method of extracting GaCl from carbonaceous mudstone

Examples

Experimental program
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Effect test

Embodiment 1

[0030] 1) Carbonaceous mudstone is crushed to -18 mesh and made into mineral powder;

[0031] 2) Weigh 25.0 g of carbonaceous mudstone powder and roast it at 650°C for 2.0 hours to obtain calcined sand;

[0032] 3) Add 75ml of 5-10mol / L HCl and 5ml of leaching aid to the calcined sand for acid leaching. The leaching temperature is 95°C, the leaching time is 2.0h, the amount of leaching slag obtained after acid leaching is 12.0g, the analysis result shows that the gallium content is 0.00028%, and the calculated gallium leaching rate is 96.37%;

[0033] 4) The material after the leaching reaction is subjected to solid-liquid separation through a suction filter. The filter residue is washed with acidified water and piled up for construction materials or mine landfill. After washing, the water is returned for leaching and recycling. The supernatant liquid is eluted after adsorption, and the water after absorption is returned for use in the leachate.

[0034] 5) Collect 2L of le...

Embodiment 2

[0036] 1) Carbonaceous mudstone is crushed to -18 mesh and made into mineral powder;

[0037] 2) Weigh 25.0 g of carbonaceous mudstone mineral powder, and roast at 550° C. for 2.0 h to obtain calcined sand;

[0038] 3) Add 35ml of 8mol / L HCl and 5ml of leaching aid to the calcined sand, add water until the liquid-solid volume ratio is 4:1 and stir, then carry out acid leaching. The leaching temperature is 90°C, the leaching time is 2..5h, the amount of leaching slag obtained after acid leaching is 12.1g, the analysis result shows that the gallium content is 0.00032%, and the calculated gallium leaching rate is 95.57%;

[0039] 4) The material after the leaching reaction is subjected to solid-liquid separation through a suction filter. The filter residue is washed with acidified water and piled up for construction materials or mine landfill; the washed water is returned to leaching for recycling. The supernatant liquid is eluted after adsorption, and the water after absorptio...

Embodiment 3

[0042] 1) Carbonaceous mudstone is crushed to -18 mesh and made into mineral powder;

[0043] 2) Weigh 25.0 g of carbonaceous mudstone powder and roast it at 500°C for 1.5 hours to obtain calcined sand;

[0044]3) Add 35ml of 6.5mol / L HCl and 6ml of leaching aid to the calcined sand, add water until the volume ratio of liquid to solid is 2:1 and stir, then carry out acid leaching. The leaching temperature is 85°C, the leaching time is 2..5h, the amount of leaching slag obtained after acid leaching is 11.8g, the analysis result shows that the gallium content is 0.00019%, and the calculated gallium leaching rate is 97.55%;

[0045] 4) The material after the leaching reaction is subjected to solid-liquid separation through a suction filter. The filter residue is washed with acidified water and stacked for construction materials or mine landfill, and the washed water is returned to the leachate for recycling. The supernatant liquid is eluted after adsorption, and the water after...

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Abstract

The invention discloses a method of extracting GaCl from carbonaceous mudstones, which relates to the technical field of gallium extracting technology and comprises the following steps of cracking the carbonaceous mudstone, and carrying out oxidizing roasting; adding hydrochloric acid and leaching aid agents into calcine, carrying out constant-temperature acid leaching, separating solid from liquid and then filtering, and cleaning residue with acidified water; preparing lixivium by using the return cleaning liquid, and then recycling; absorbing the cleaning liquid by using CL-TBP resin, and eluting the cleaning liquid by NH4Cl; preparing lixivium by using the return absorbed liquid. The invention has the advantages of short technology procedure, simple operation and control, low production cost, waste water and residue recycling in the production process and environment protection and safety. By the invention, ideal economic indicators can be obtained, wherein the leaching rate of gallium is up to 97.66%, the absorbing and eluting rate of gallium is 93.85%, and the recovery rate of gallium is 91.65%.

Description

technical field [0001] The invention relates to the technical field of gallium extraction technology, in particular to a method for extracting metal gallium from coal mine carbonaceous mudstone. Background technique [0002] With the rapid development of communications and electronic computers, scattered metals have been widely used in recent years, especially for military purposes. According to statistics, the world's annual output of scattered metals is about 2000t. Gallium is one of the rare metals, widely used in electronics industry, low-melting alloy, cold flux, catalyst, instrument industry, medicine, etc. The development of its industry is closely related to the national economy and people's livelihood, so the development and utilization of gallium resources is of great importance to enhance my country's comprehensive national strength meaning. [0003] Gallium is a scattered metal, there are few independent deposits, and rare special mining and smelting. Currently ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B58/00C22B3/10C01G15/00
CPCY02P10/20
Inventor 朱昌洛熊述清
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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