Multifunctional treatment method for tailings

A multi-functional, tailings technology, applied in the field of solid waste resource utilization, can solve the problems of difficult ion separation, high heavy metal content, strong corrosion, etc., and achieve the effect of controllable reaction conditions, short processing time, and accelerated leaching

Active Publication Date: 2021-05-25
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

[0007] Aiming at the limitations of the existing tailings leaching treatment technology, namely the high content of heavy metals in the existing tailings leachate, strong corrosion, high risk, and difficulty in ion separation, the present invention provides a tailings multifunctional The method of chemical treatment, the method of electromagnetic coupling to strengthen the multifunctional treatment of tailings and the method of material maintenance to turn tailings from waste into treasure

Method used

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  • Multifunctional treatment method for tailings

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Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1: the method for the multifunctional treatment of the copper tailings is as follows:

[0041] Such as figure 1 As shown, the treatment device in the method includes a treatment chamber, an anode electrode 2, a cathode electrode, an agitator 8, an antimony tailings composite film 11, and a magnetic field generator. The treatment chamber is cylindrical, and the top of the treatment chamber is provided with an inlet The material port 1 and the exhaust port 10, the anode electrode is a graphite arc electrode plate, and the cathode electrode is a stainless steel arc electrode plate; The cylindrical film is placed in the processing chamber, and the processing chamber is divided into an inner chamber and an outer chamber, the stirrer 8 is arranged in the inner chamber of the processing chamber, the magnetic field generator is arranged outside the processing chamber and the generated The magnetic field covers the processing chamber. The magnetic field generator is ...

Embodiment 2

[0054] Embodiment 2: the method for the multifunctional treatment of lead-zinc tailings is as follows:

[0055] The device used in this embodiment is the same as that in Embodiment 1, except that both the positive electrode and the negative electrode are electrode plates, and the electrode material is graphite; the number of turns of the Helmholtz coil is 100 turns;

[0056] The composition and mass percentage of antimony tailings composite film are 80% methyl acetate, 10% polyurethane, 4% ethylene glycol, 4% polyoxyethylene, and 1% antimony tailings after leaching treatment (the mass concentration of antimony tailings is Soak in 10% dilute sulfuric acid, the particle size is less than 400 mesh), 1% urea; the preparation method is as follows:

[0057] (1) Mix methyl acetate, polyurethane, ethylene glycol, polyoxyethylene, leached antimony tailings, and urea, and heat and stir in a water bath at 60°C for 8 hours;

[0058] (2) After stirring, stand still in a water bath at 40°C...

Embodiment 3

[0068] Embodiment 3: the method for the multifunctional treatment of antimony tailings is as follows:

[0069] The device used in this embodiment is the same as in Embodiment 1, except that the number of turns of the Helmholtz coil is 80 turns;

[0070] The composition and mass percentage of antimony tailings composite film are 75% methyl butanone, 12% polystyrene, 5% ethylene glycol, 4% polyoxyethylene-polyoxypropylene copolymer, antimony tailings after leaching 3% (the antimony tailings are soaked in dilute sulfuric acid with a mass concentration of 15%, and the particle size is less than 400 mesh), PVP 1%; the preparation method is as follows:

[0071] (1) Mix methyl butanone, polystyrene, ethylene glycol, polyoxyethylene-polyoxypropylene copolymer, 3% antimony tailings after leaching treatment, and PVP, and heat and stir in a water bath at 50°C for 10 hours;

[0072] (2) After the stirring is completed, stand still in a 50°C water bath until all the bubbles are eliminated...

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Abstract

The invention discloses a multifunctional treatment method for tailings. The multifunctional treatment method comprises the following steps of putting the tailings and leachate into a treatment device, carrying out magnetization under the conditions of stirring and 0.04-4 mT magnetic field, after magnetization treatment, treating a mixture under the conditions of stirring and external 6-360 V electric field, enabling ions in the mixture to generate directional migration under the action of electric field force, enabling anions and cations to correspondingly penetrate through an antimony tailing composite membrane arranged in the treatment device and collecting to an anode area and a cathode area, enriching metal ions on a cathode, meanwhile, generating hydrogen near the cathode due to the action of electrodes, collecting the hydrogen to serve as clean energy, carrying out solid-liquid separation after treatment is completed, washing leaching residues with water and then adding a cementing material, stirring and uniformly mixing under an electromagnetic condition, forming, and carrying out electromagnetic curing for 1-28 days to obtain a building material, and recycling a leaching solution. The method is easy to operate, good in separation effect, high in practicability and wide in market application prospect.

Description

technical field [0001] The invention relates to a method for multifunctional treatment of tailings, which belongs to the utilization of solid waste resources. Background technique [0002] The accumulation of tailings in my country is about 11 billion tons, and the national tailings discharge is about 1.2 billion tons. It occupies land, wastes resources, pollutes the environment, and poses safety hazards. Mineral resources are non-renewable resources, and the mineral components in tailings are less. If the tailings are not purified, the already scarce mineral resources will be wasted and cause serious pollution to the environment; if the tailings are purified, the current technical means are costly, and a high-efficiency and cheap leaching method for tailings should be studied It has become one of the biggest problems in tailings disposal today. [0003] Tailings are the part of the products of sorting operations in ore dressing that have a low content of useful components an...

Claims

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Application Information

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IPC IPC(8): C22B3/02C22B3/04C22B3/18C22B15/00C25B1/04C04B40/02B09B3/00B09B5/00
CPCC22B3/02C22B3/045C22B3/18C25B1/04C22B15/0071C22B15/0084C04B40/0209B09B3/00B09B5/00Y02P10/20Y02E60/36
Inventor 瞿广飞吴丰辉刘亮亮赵晨阳孙楝凯李军燕王芳
Owner KUNMING UNIV OF SCI & TECH
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