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Preparation method of titanium-based lead-tungsten carbide-cerium oxide-polyaniline composite anode plate

A composite anode and tungsten carbide technology, which is applied in the direction of electrodes, electrolytic coatings, coatings, etc., can solve the problems of high cost and cumbersome preparation process, and achieve the effects of low cost, simple process and low equipment investment

Active Publication Date: 2011-12-28
晋宁理工恒达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems in the prior art that when preparing titanium-based lead dioxide anodes, it is necessary to coat platinum group metals and their oxides on the titanium surface, the preparation process is cumbersome and the cost is high. The present invention provides a titanium-based lead-tungsten carbide- The preparation method of cerium oxide-polyaniline composite anode plate, its embodiment is as follows:

Method used

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  • Preparation method of titanium-based lead-tungsten carbide-cerium oxide-polyaniline composite anode plate
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  • Preparation method of titanium-based lead-tungsten carbide-cerium oxide-polyaniline composite anode plate

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Embodiment 1

[0034] Composite co-deposition of lead-tungsten carbide-cerium oxide-polyaniline on a titanium substrate, and the titanium plate is processed into a small sample of 50mm×20mm×2mm. The process flow is: pure titanium sheet→sand blasting→water washing→oil removal→water washing→chemical etching→water washing→composite co-deposition→water washing→drying→testing and characterization. The formula and process conditions of the composite co-deposition described therein: yellow lead oxide 100g / L, potassium sodium tartrate 150g / L, potassium hydroxide 55g / L, cerium oxide 5g / L, tungsten carbide 10g / L, polyaniline 5g / L L, the temperature is 20°C, the average current density is 2A / dm 2, pulse width 0.1ms, period 0.5ms, duty cycle range 0.1, electroplating under magnetic stirring for 1.5 hours;

[0035] The tungsten carbide has a particle size of 1.5 μm, the cerium oxide has a particle size of 0.3 μm, and the polyaniline has a particle size of 3 μm.

Embodiment 2

[0037] Composite co-deposition of lead-tungsten carbide-cerium oxide-polyaniline on a titanium substrate, and the titanium plate is processed into a small sample of 50mm×20mm×2mm. The process flow is: pure titanium sheet→sand blasting→water washing→oil removal→water washing→chemical etching→water washing→composite co-deposition→water washing→drying→testing and characterization. The formula and process conditions of the composite co-deposition described therein: yellow lead oxide 100g / L, potassium sodium tartrate 150g / L, potassium hydroxide 55g / L, cerium oxide 10g / L, tungsten carbide 20g / L, polyaniline 10g / L L, the temperature is 30°C, the average current density is 2.5A / dm 2 , pulse width 0.3ms, period 1ms, duty cycle range 0.5, electroplating under magnetic stirring for 1.5 hours;

[0038] The tungsten carbide has a particle size of 1.5 μm, the cerium oxide has a particle size of 0.3 μm, and the polyaniline has a particle size of 3 μm.

Embodiment 3

[0040] Composite co-deposition of lead-tungsten carbide-cerium oxide-polyaniline on a titanium substrate, and the titanium plate is processed into a small sample of 50mm×20mm×2mm. The process flow is: pure titanium sheet→sand blasting→water washing→oil removal→water washing→chemical etching→water washing→composite co-deposition→water washing→drying→testing and characterization. The formula and process conditions of the composite co-deposition described therein: yellow lead oxide 100g / L, potassium sodium tartrate 150g / L, potassium hydroxide 55g / L, cerium oxide 20g / L, tungsten carbide 40g / L, polyaniline 20g / L L, the temperature is 35°C, the average current density is 5A / dm 2 , pulse width 0.7ms, period 2ms, duty cycle range 0.7, electroplating under magnetic stirring for 1.5 hours;

[0041] The tungsten carbide has a particle size of 1.5 μm, the cerium oxide has a particle size of 0.3 μm, and the polyaniline has a particle size of 3 μm.

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Abstract

The invention discloses a method for preparing a titanium-based lead-tungsten carbide-cerium oxide-polyaniline composite anode plate, and belongs to the technical field of nonferrous metal electro-deposition treatment. The method sequentially comprises the following steps of: (1) performing surface treatment; (2) preparing electrolyte; (3) performing pulse plating; and (4) drying, wherein the electrolyte during pulse plating contains yellow lead oxide, potassium sodium tartrate, potassium hydroxide, tungsten carbide, cerium oxide and polyaniline. The method has the advantages of low cost of plating solution and low equipment investment; a compact film layer is formed on the surface of an anode of the composite anode plate prepared by the method, so that the anode is in an insoluble state; and when nonferrous metal electro-deposition is performed, the voltage of an electro-deposition tank can be obviously reduced, and power consumption can be reduced, so that the quality of a cathode product is improved.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal electrowinning and metal surface treatment, and in particular relates to a method for preparing a composite anode plate used in wet extraction of metals such as zinc, copper, nickel, cobalt, manganese and chromium. Background technique [0002] In the process of wet extraction of zinc, copper, nickel, cobalt, manganese, chromium and other metals, the anode still uses lead-based alloys. The disadvantages are: high cell voltage, low current efficiency, high energy consumption in the electrowinning process, and anode service life. Short, the lead in the anode is easily dissolved into the cathode product, resulting in a decrease in the quality of the cathode product. Traditional insoluble anode materials are roughly divided into three categories: platinum, graphite and lead alloy anodes. Platinum is expensive, corrosion occurs during high-current electrolysis of graphite and lead alloy anod...

Claims

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Application Information

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IPC IPC(8): C25D5/18C25D15/00C25C7/02
Inventor 郭忠诚黄惠
Owner 晋宁理工恒达科技有限公司
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