Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for extracting gallium-combined aluminium hydroxide from gallium-containing porcelain clay

A technology of aluminum hydroxide and china clay, applied in the field of gallium extraction and co-production of aluminum hydroxide, to achieve the effects of reduced emissions, high comprehensive extraction rate, and simple process operation

Inactive Publication Date: 2014-12-31
HEBEI UNIV OF ENG
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, at present, there is no method for extracting gallium from gallium-containing china clay through a combined method and recovering aluminum hydroxide at the same time, so as to save materials and further reduce the discharge of subsidiary waste, thereby bringing significant economic and social benefits.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for extracting gallium-combined aluminium hydroxide from gallium-containing porcelain clay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In step (A), the sintering agent is a mixture of sodium carbonate and calcium carbonate with a mass ratio of 1:1; the temperature of the muffle furnace is 900°C, and the sintering time is 3h; in step (B), the solid and The liquid volume ratio is 1:3, the concentration of sodium carbonate solution is 30g / L, the temperature of the water bath is 80°C, and the heating time of the water bath is 2.5h; The temperature of the solution is 75°C; in step (D), when performing the second carbonation treatment, the temperature of the solution is 80°C when the aeration is controlled, and the aeration is stopped when the pH of the solution is 9.7; in step (F), When carrying out the carbonation treatment for the third time, the temperature of the solution was 85° C. during controlled aeration.

[0035] After adopting Example 1, the result measurement: in step (B), the leaching rate of gallium and aluminum all reaches 87.33%.

Embodiment 2

[0037] In step (A), the sintering agent is a mixture of sodium carbonate and calcium carbonate with a mass ratio of 0.9:1; the temperature of the muffle furnace is 950°C, and the sintering time is 3h; in step (B), the solid and The liquid volume ratio is 1:2.5, the concentration of sodium carbonate solution is 30g / L, the temperature of the water bath is 80°C, and the heating time of the water bath is 2h; The temperature of the solution is 75°C; in step (D), when performing the second carbonation treatment, the temperature of the solution is 80°C when the aeration is controlled, and the aeration is stopped when the pH of the solution is 9.7; in step (F), the During the third carbonation treatment, the temperature of the solution was 85° C. during controlled aeration.

[0038] After adopting Example 2, the result measurement: in step (B), the leaching rate of gallium and aluminum all reaches 83.67%.

Embodiment 3

[0040] In step (A), the sintering agent is a mixture of sodium carbonate and calcium carbonate with a mass ratio of 1:1; the temperature of the muffle furnace is 1000°C, and the sintering time is 2h; in step (B), the solid and The liquid volume ratio is 1:2.5, the concentration of sodium carbonate solution is 10g / L, the temperature of the water bath is 80°C, and the heating time of the water bath is 2.5h; The temperature of the solution is 75°C; in step (D), when performing the second carbonation treatment, the temperature of the solution is 80°C when the aeration is controlled, and the aeration is stopped when the pH of the solution is 9.7; in step (F), When carrying out the carbonation treatment for the third time, the temperature of the solution was 85° C. during controlled aeration.

[0041] After adopting Example 3, the result measurement: in step (B), the leaching rate of gallium and aluminum all reaches 67.73%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for extracting gallium-combined aluminium hydroxide from gallium-containing porcelain clay. The method comprises the following steps sequentially: (A) sintering; (B) primary alkaline leaching; (C) primary carbonating; (D) secondary carbonating; (E) secondary alkaline leaching; (F) third-time carbonating; (G) purifying a gallium metal; and (H) processing aluminium hydroxide. The method provided by the invention has the advantages as follows: the gallium is extracted from the porcelain clay mine by utilizing a combination process, thereby saving materials and reducing the emission of affiliated wastes; and in addition, the aluminium hydroxide is recycled, the process operation is simple and the comprehensive extraction yield is high, thereby realizing remarkable economic and social benefits.

Description

technical field [0001] The invention relates to a method for extracting gallium and co-producing aluminum hydroxide from gallium-containing china clay. Background technique [0002] According to the geochemical properties of metal gallium, some properties of gallium are similar to its adjacent elements such as aluminum and zinc, and it is usually associated with bauxite, sphalerite, sulfide ore and coal in the form of isomorphism middle. At present, about 90% of gallium metal in the world is obtained from the by-products of the aluminum smelting industry, the remaining 10% of gallium is mainly recovered from the residue of zinc smelting, and a small amount of gallium is recovered from certain coal ash; The production mainly comes from the smelting of bauxite. Therefore, at present, there is no method for extracting gallium from gallium-containing china clay through a combined method and recovering aluminum hydroxide at the same time, so as to save materials and further red...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/12C22B3/34C22B58/00C22B21/00
CPCY02P10/20
Inventor 李彦恒孙玉壮赵存良杨晶晶张健雅霍婷
Owner HEBEI UNIV OF ENG