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Method for recovering and adsorbing tungstate radicals in scheelite beneficiation wastewater

A technology of mineral processing wastewater and tungstate, which is applied in mining wastewater treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of low recovery rate of tungstate and slow recovery rate, so as to prevent secondary pollution and realize Recycling, the effect of enhancing the adsorption capacity

Active Publication Date: 2020-01-03
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The present invention aims to solve the technical problems of low recovery rate and slow recovery rate of tungstate radicals in existing scheelite mineral processing wastewater, and provides a recovery and adsorption method for tungstate radicals in scheelite mineral processing wastewater

Method used

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  • Method for recovering and adsorbing tungstate radicals in scheelite beneficiation wastewater
  • Method for recovering and adsorbing tungstate radicals in scheelite beneficiation wastewater
  • Method for recovering and adsorbing tungstate radicals in scheelite beneficiation wastewater

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specific Embodiment approach 1

[0025] Specific implementation mode 1: This implementation mode is a method for recovering and adsorbing tungstate in scheelite mineral processing wastewater, and the specific steps are as follows:

[0026] The three-electrode system composed of polyaniline / carbon cloth composite electrode material, Ag / AgCl electrode and platinum electrode is connected to the electrochemical workstation, the polyaniline / carbon cloth composite electrode material is used as the working electrode, the Ag / AgCl electrode is used as the reference electrode, and the platinum electrode is The electrode is the counter electrode, and the scheelite ore dressing wastewater to be treated is used as the electrolyte, and the electric adsorption is carried out under the condition of a voltage of 0.5V-1.2V for 2h-6h.

specific Embodiment approach 2

[0027] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the preparation method of the polyaniline / carbon cloth composite electrode material is as follows:

[0028] 1. Add the carbon cloth and aniline to the HCl aqueous solution, completely immerse the carbon cloth in the mixture, and then ultrasonically 30-40 minutes to disperse the aniline to the surface of the carbon cloth;

[0029] The concentration of the aqueous HCl solution is 0.1mol / L to 0.12mol / L;

[0030] The volume ratio of the aniline to the HCl aqueous solution is 1:(30~35);

[0031] 2. Add ammonium persulfate into HCl aqueous solution and dissolve it by ultrasonic;

[0032] The concentration of the aqueous HCl solution is 0.1mol / L to 0.12mol / L;

[0033] The quality of described ammonium persulfate and the volume ratio of HCl aqueous solution are (0.5g~0.6g): 15mL;

[0034] 3. Add the sonicated solution in step 2 dropwise to the sonicated solution in step 1, then pl...

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the electrosorption is performed for 2 hours to 3 hours under the condition of a voltage of 1V. Others are the same as the first embodiment.

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Abstract

The invention relates to a method for recovering tungstate radicals in beneficiation wastewater, and concretely discloses a method for recovering and adsorbing tungstate radicals in scheelite beneficiation wastewater. The invention aims to solve the technical problems of low recovery rate and low recovery rate of tungstate radicals in scheelite beneficiation wastewater in the prior art. The methodcomprises the following steps: a three-electrode system which is composed of a polyaniline / carbon cloth composite electrode material, an Ag / AgCl electrode and a platinum electrode is connected to anelectrochemical workstation, and electro-adsorption is carried out under the condition of electric field force by using the polyaniline / carbon cloth composite electrode material as a working electrode, the Ag / AgCl electrode as a reference electrode, the platinum electrode as a counter electrode and the scheelite beneficiation wastewater to be treated as an electrolyte. The method has a simple andrapid process, and makes the recovery rate of tungstate ions adsorbed for 2 h reach 75%.

Description

technical field [0001] The invention relates to a method for recovering tungstate radicals in mineral processing wastewater. Background technique [0002] At present, the recovery rate of scheelite mineral processing wastewater is not high, especially the mineral processing wastewater of sulfide ore and oxidized ore symbiotic ore is mostly discharged up to the standard or only a small part can be recovered. The concentration of heavy metals, suspended solids and chemical oxygen demand in mineral processing wastewater greatly exceed the national standards, which can easily affect the surrounding areas of the mine. Therefore, if the mineral processing wastewater can be made harmless and reused as a resource, it will not only control environmental pollution but also save water resources, and will also generate huge social and economic benefits. [0003] The recovery process of metal ions mainly includes the following types: chemical precipitation method, redox method, biologic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C22B34/36C22B7/00C02F1/28C02F103/10C02F101/20
CPCC02F1/28C02F1/46109C02F2001/46133C02F2101/20C02F2103/10C22B7/006C22B34/36Y02P10/20
Inventor 杨利明畅子雯罗旭彪邵鹏辉倪晨权刘廷玺
Owner NANCHANG HANGKONG UNIVERSITY
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