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Extracting agent solution for extracting titanium and/or iron from titanium and iron-contained multi-metal chloride acid solution and extracting method

A technology of acidic solution and extractant, which is applied in the field of extractant solution and extraction of titanium and/or iron, which can solve the problem that the extraction capacity and selectivity of neutral organophosphorus extractants are difficult to meet the requirements at the same time, difficult to extract and separate target elements, There are problems such as not being widely used, and the effects of cost reduction, increased washing process, and strong extraction capacity are achieved.

Active Publication Date: 2018-08-10
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acidic organophosphorus extractant needs to add other substances in the stripping process, and it will take a long time to reach the extraction equilibrium, and the Ti 4+ The selectivity is not high, and it is difficult to extract and separate the target elements in the hydrochloric acid system, so it has not been widely used.
The extraction capacity and selectivity of neutral organic phosphorus extractants are difficult to meet the requirements at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1). With 20% (w / w, mass fraction) (C 4 h 9 ) 4 NCl+80% (w / w, mass fraction) oleyl alcohol polyoxyethylene ether is the organic phase, that is, the mass ratio of the two is 2:8, and at normal temperature (C 4 h 9 )4 NCl and oleyl alcohol polyoxyethylene ether are mixed and melted or melted into a liquid; the concentration of hydrogen ions in the 2-stage countercurrent extraction is 6mol / L ilmenite hydrochloric acid leaching solution, the temperature is 30°C, compared to O / A=1, the time is 2min , the extraction rate of iron can reach 99.85%, the extraction rate of titanium can reach 99.96%, and the loaded organic phase can be obtained;

[0030] (2). The organic phase of step (1) was washed with hydrochloric acid with a concentration of 7 mol / L at a temperature of 30° C., compared to O / A=2, and the time was 3 minutes to obtain an organic phase free of impurities after washing;

[0031] (3). The organic phase of step (2) is back-extracted with 3-stage cross-flow hydroc...

Embodiment 2

[0034] (1). With 30% (w / w, mass fraction) (C 4 h 9 ) 3 C 3 h 7 NBr+70% (w / w, mass fraction) oleyl alcohol polyoxyethylene ether phosphate is the organic phase, that is, the mass ratio of the two is 3:7, at normal temperature (C 4 h 9 ) 3 C 3 h 7 NBr and oleyl alcohol polyoxyethylene ether phosphate are mixed and melted or melted into a liquid; the concentration of hydrogen ions in the 3-stage countercurrent extraction is 7mol / L ilmenite hydrochloric acid leaching solution, the temperature is 35 ° C, compared to O / A = 1.5, time 2min, the extraction rate of iron can reach 99.99%, the extraction rate of titanium can reach 99.69%, and the loaded organic phase is obtained;

[0035] (2). The organic phase of step (1) was washed with deionized water at a temperature of 35° C., compared to O / A=2, and the time was 3 minutes to obtain an organic phase free of impurities after washing;

[0036] (3). The organic phase of step (2) is back-extracted with 4 stages of hydrochloric ac...

Embodiment 3

[0039] (1). Use 70% (C 3 h 7 ) 2 (C 7 h 15 ) 2 NHSO 4 (w / w, mass fraction)+30% (w / w, mass fraction) C 12 h 25 OH is the organic phase, that is, the mass ratio of the two is 7:3, at room temperature (C 3 h 7 ) 2 (C 7 h 15 ) 2 NHSO 4 and C 12 h 25 The OH is mixed and melted or melted into a liquid; the concentration of hydrogen ions in the three-stage countercurrent extraction is 8mol / L. The waste acid solution produced by the hydrochloric acid method is 50°C. Compared with O / A=1, the time is 7min. The extraction rate of iron can reach 99.99%, and the extraction rate of titanium can reach 99.78%, and the loaded organic phase can be obtained;

[0040] (2). The organic phase of step (1) was washed with hydrochloric acid with a concentration of 10 mol / L at a temperature of 50° C., compared to O / A=1.5, and the time was 5 min to obtain an organic phase free of impurities after washing;

[0041] (3). The organic phase of step (2) is back-extracted with 2 stages of hyd...

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Abstract

The invention discloses extracting agent solution for extracting titanium and / or iron from titanium and iron-contained multi-metal chloride acid solution and an extracting method. The extracting agentsolution consists of an extracting agent and diluent; the extracting agent is one or more of quaternary ammonium salt R4NX, N-alkylamide, N, N-dialkylamide and diethanolamide; and the diluent is oneor more of oleyl alcohol, oleyl alcohol derivatives, alkane alcohol and acetate compounds in a normal state at normal temperature. The extracting agent solution achieves high titanium and iron extracting capacity, quick balance, excellent selectivity, easy reverse extraction, excellent separation, economy and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy or chemical industry, and in particular relates to an extractant solution and an extraction method for extracting titanium and / or iron from an acidic solution containing titanium-iron polymetallic chlorides. Background technique [0002] Titanium ore reserves are large and widely distributed around the world. At present, about 90% of the titanium ore mined each year is used to produce titanium dioxide. Titanium dioxide has high chemical stability, good whiteness, tinting power and hiding power. It is the most important white pigment and also a titanium-based product. The most important product. Titanium dioxide accounts for 80% of the total white pigment usage, and is widely used in many fields of modern industry and agriculture, national defense, and science and technology. [0003] The main production processes of titanium dioxide in industry are sulfuric acid method and chlorination m...

Claims

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Application Information

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IPC IPC(8): C22B34/12C22B3/28C22B3/32C22B7/00C21B15/00
CPCC21B15/00C22B7/006C22B34/1259C22B3/288C22B3/32Y02P10/20
Inventor 魏琦峰朱珂瑀任秀莲
Owner HARBIN INST OF TECH AT WEIHAI
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