Method for comprehensively utilizing artificial rutile mother liquor in zinc concentrate treatment

A technology of artificial rutile and zinc concentrate, applied in the preparation/purification of zinc halide, sulfur, iron oxide, etc., can solve problems such as environmental pollution

Inactive Publication Date: 2021-04-27
宜宾天原海丰和泰有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] In order to reduce the processing cost of artificial rutile mother liquor and simultaneously solve the environmental pollution problem of zinc chloride production p...

Method used

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  • Method for comprehensively utilizing artificial rutile mother liquor in zinc concentrate treatment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Measure 100mL of the above-mentioned artificial rutile mother liquor, put it into a 300mL polytetrafluoroethylene pressure leaching tank, add 30g of zinc concentrate, put the pressure leaching tank in a 140°C oven at a constant temperature for 3 hours, and add Oxygen is passed through the pressure tank to ensure that the pressure in the tank is 0.65Mpa, and then solid-liquid separation is carried out, and the filtrate is zinc chloride solution; the solid phase is separated by cyclone to obtain elemental sulfur and iron oxide.

[0037] After testing, the obtained zinc chloride solution contains zinc 97.23g / L, iron content 1.08g / L, residual acid HCL is 1.86%, zinc recovery rate 97.20%; the S content of gained elemental sulfur is 95.30%, iron content 2.24%, The sulfur recovery rate is 95.20%; the total iron content of the obtained iron oxide is 59.84%, and the sulfur content is 2.00%.

Embodiment 2

[0039] Measure 150mL of the above-mentioned artificial rutile mother liquor, put it into a PTFE pressure leaching tank with a volume of 300mL, add 30g of zinc concentrate, put the pressure leaching tank into a 140°C oven at a constant temperature for 3 hours, and add Oxygen is passed through the pressure tank to ensure that the pressure in the tank is 0.65Mpa, and then solid-liquid separation is carried out, and the filtrate is zinc chloride solution; the solid phase is separated by cyclone to obtain elemental sulfur and iron oxide.

[0040] After testing, the obtained zinc chloride solution contains zinc 64.69g / L, iron content 3.28g / L, residual acid HCL is 2.64%, zinc recovery rate 97.80%; the S content of gained elemental sulfur is 96.70%, iron content 1.68%, The sulfur recovery rate is 96.62%; the total iron content of the obtained iron oxide is 61.64%, and the sulfur content is 1.46%.

Embodiment 3

[0042] Measure 100mL of the above-mentioned artificial rutile mother liquor, put it into a PTFE pressure leaching tank with a volume of 300mL, add 60g of zinc concentrate, put the pressure leaching tank in a 140°C oven at a constant temperature for 3 hours, and add Oxygen is passed through the pressure tank to ensure that the pressure in the tank is 0.65Mpa, and then solid-liquid separation is carried out, and the filtrate is zinc chloride solution; the solid phase is separated by cyclone to obtain elemental sulfur and iron oxide.

[0043] After testing, gained zinc chloride solution contains zinc 146.48g / L, iron content 2.49g / L, residual acid HCL is: 0.96%, zinc recovery rate 77.26%; The S content of gained elemental sulfur is 91.22%, iron content 4.58% , the sulfur recovery rate is 72.35%; the total iron content of the obtained iron oxide is 25.80%, and the sulfur content is 3.64%.

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Abstract

The invention discloses a method for comprehensively utilizing artificial rutile mother liquor in zinc concentrate treatment. The method comprises the step of carrying out pressure oxidation leaching on zinc concentrate and artificial rutile mother liquor. The method has the advantages that (1) the zinc concentrate is leached out by pressurizing and oxidizing the artificial rutile mother liquor, zinc in the zinc concentrate reacts with hydrochloric acid to generate a zinc chloride product, sulfur and iron are oxidized to generate elemental sulfur and iron oxide, and the hydrochloric acid in the mother liquor and valuable substances in the zinc concentrate are effectively utilized; (2) the zinc concentrate is leached out by pressurizing and oxidizing the artificial rutile mother liquor, so that the technical problems of environmental protection and economy of acid and iron treatment in the artificial rutile mother liquor treatment process are solved; and (3) the mother liquor treatment cost in the artificial rutile production process can be remarkably reduced, the amount of environment-friendly wastes in artificial rutile mother liquor treatment is reduced, and the production cost and the environment-friendly treatment cost are reduced. Due to the fact that the economic benefits are remarkable and the technology is feasible, the method has good market popularization benefits.

Description

technical field [0001] The invention relates to the production technology of titanium dioxide by chlorination method, in particular to a by-product treatment technology in the production of titanium dioxide by chlorination method. Background technique [0002] The production and research of titanium dioxide at home and abroad show that it is theoretically feasible to directly use titanium concentrate to prepare titanium dioxide, and even use titanium concentrate to directly chlorinate to prepare TiCl 4 and FeCl 3 , but the by-product FeCl is directly chlorinated 3 It has few uses. If it is produced by direct chlorination process, FeCl 3 A large amount of production has become an environmental barrier. If it is not treated, it will form pollutants and affect environmental protection. If it is treated, it will definitely affect the technical and economic indicators of the treatment process. Therefore, it cannot be accepted by the market for industrial production. With the i...

Claims

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Application Information

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IPC IPC(8): C01G9/04C01G49/06C01B17/06
CPCC01G9/04C01G49/06C01B17/06
Inventor 周高明唐勇徐慧远李露
Owner 宜宾天原海丰和泰有限公司
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