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A method for optimizing zinc electrowinning process

A technology for optimizing zinc and electrodeposition, which is applied in the field of zinc electrodeposition, and can solve problems such as difficult optimization of zinc electrodeposition process

Active Publication Date: 2021-07-13
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the actual production process, in order to stabilize production and reduce electricity costs, many conditions are basically kept constant. It is difficult to optimize the zinc electrowinning process in the existing technology, so the present invention proposes to optimize the zinc electrowinning process through strong magnetic treatment technology

Method used

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  • A method for optimizing zinc electrowinning process
  • A method for optimizing zinc electrowinning process
  • A method for optimizing zinc electrowinning process

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1, a method for optimizing zinc electrowinning process, comprises the following steps, step 1: measuring Zn in electrowinning solution 2+ 、H 2 SO 4 and the concentration of other impurity ions, the magnetization device is connected to the liquid inlet pipe of the electrolytic cell, and the electrolyte is first subjected to the Lorentz force through the magnetization device, and then the magnetic field gradient force, and the Lorentz force is generated. The magnetic induction intensity is 1-1.5T, and the magnetic induction intensity that provides the magnetic field gradient force is 2-3T. When the electrolyte passes through the magnetic field that provides the Lorentz force, the pipeline adopts a shunt measure, that is, a set of magnetic fields that provide the Lorentz force. It needs to be equipped with 2 sets of magnetic fields that provide the magnetic field gradient force. The flow rate of the electrolyte is 120-240L / min when the electrolyte passes throug...

Embodiment 2

[0023] Example 2, in the method for optimizing the zinc electrowinning process according to Example 1: the magnetic induction for generating the Lorentz force in the step 1 is 1T, and the magnetic induction for providing the magnetic field gradient force is 3T.

Embodiment 3

[0024] Embodiment 3, according to the method for optimizing the zinc electrowinning process described in embodiment 1 or 2: in the step 1, the flow rate of the electrolytic solution through the magnetization device that provides Lorentz force is 200L / min, and the electrolytic solution passes through to provide a magnetic field The flow rate of the gradient force magnetization device is 100L / min, and the current density of the zinc electrowinning process is 420A / m 2 , the temperature is 35°C.

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Abstract

The present invention is a method for optimizing the zinc electrodeposition process, using the Lorentz force generated by the magnetic field to moderately thin Zn 2+ And other positive and negative ions chemical hydration layer thickness, reduce the size of water molecule clusters; then use the magnetic field gradient force generated by the magnetic field to thin Zn again 2+ The thickness of the chemical hydration layer reduces the size of the water molecule clusters and increases the H + , Mn 2+ 、Cu 2+ , Fe 2+ , Fe 3+ 、 Ge 4+ 、Ni 2+ 、Co 2+ , Ca 2+ , Mg 2+ The thickness of the hydration layer of paramagnetic ions will reduce the voltage drop of the electrowinning cell and increase the H + The overvoltage can reduce the formation of calcium sulfate and magnesium sulfate, and reduce the burning and remelting of cathode zinc. The invention can improve the quality of electrolytic zinc without adding additional chemical reagents, hinder anode corrosion, and achieve the purpose of saving energy and reducing consumption.

Description

technical field [0001] The invention belongs to the technical field of electrolytic zinc deposition, in particular to a method for optimizing the electrolytic zinc deposition process. Background technique [0002] In the electrowinning process of hydrometallurgy, the most concerned issue is the consumption of electric energy. Many scholars and zinc manufacturers have done a lot of work around the energy saving and consumption reduction of the zinc electrolysis process. The DC unit consumption of zinc electrowinning is related to two factors, namely current efficiency and cell voltage. DC unit consumption is inversely proportional to current efficiency and directly proportional to cell voltage. Therefore, any measures that can improve the current efficiency and reduce the cell voltage can reduce the DC unit consumption of zinc electrowinning. Through the analysis of a large number of industrial test data and graphic data, it can be concluded that the factors that affect the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C1/16C25C7/06
CPCC25C1/16C25C7/06
Inventor 姚夏妍马菲菲后洁琼王源瑞牛永胜刘静静鲁兴武程亮李俞良李银丽
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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