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Ceramic diaphragm electrolytic cells, preparation method and application thereof

A technology of ceramic diaphragm and electrolytic cell, which is applied in the direction of ceramic products, application, electrolysis process, etc., can solve the problems of affecting the use effect and service life of diaphragm electrolysis, the inability to produce ceramic diaphragm electrolytic cell by itself, and high cost, so as to achieve low cost, Easy-to-achieve, single-aperture effect

Inactive Publication Date: 2010-01-27
YIXING XINGGUANG CERAMICS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the diaphragm electrolysis method, the key to the industry lies in the performance of the diaphragm. At present, domestic ceramic diaphragm electrolytic cells cannot be produced by themselves, and foreign products also have problems such as relatively high cost, which affects the use effect and service life of the diaphragm electrolysis method.

Method used

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  • Ceramic diaphragm electrolytic cells, preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] Mix 60 parts of alumina, 48 parts of silicon oxide, 16 parts of graphite powder and 8 parts of lanthanide rare earths, ball mill them evenly in an aqueous solution, pour them into a mold, and after drying, put them into a kiln for firing at about 1500°C to obtain A ceramic diaphragm electrolyzer with a porosity of 32% and an average pore size of 0.9 μm.

Embodiment 2

[0025] Mix 50 parts of alumina, 30 parts of silicon oxide, 5 parts of rare earth powder and 5 parts of lanthanide rare earth, ball-mill them in an aqueous solution, and then pour them into a mold to form them. After drying, they are fired in a kiln at about 1000°C to obtain A ceramic diaphragm electrolyzer with a porosity of 11% and an average pore size of 0.35 μm.

Embodiment 3

[0027] Mix 75 parts of alumina, 60 parts of silicon oxide, 20 parts of carboxymethyl cellulose and 15 parts of lanthanide rare earth, ball-mill them in an aqueous solution, and then pour them into a mold to form them. After drying, they are fired in a kiln at about 1600°C. Prepared to obtain a ceramic diaphragm electrolyzer with a porosity of 40% and an average pore diameter of 1.5 μm.

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Abstract

The invention discloses a ceramic diaphragm electrolytic cell, which is an open container. The materials comprise the following compositions by weight percent: 50 to 75 portions of aluminum oxides and 30 to 60 portions of silicon oxides. Moreover, the total volume of micropores of the ceramic diaphragm electrolytic cell occupies 10 to 40 percent of that of the electrolytic cell, and the aperture of the micropores is 0.3 to 1.5 micrometers. The ceramic diaphragm electrolytic cell has the advantages of low cost, uniform distribution of the micropores, singular aperture, capability of well meeting the requirement of penetration of metallic ions, simple preparation process and easy realization.

Description

technical field [0001] The invention belongs to the technical field of electroplating, and in particular relates to a ceramic diaphragm electrolytic cell capable of removing metal impurities in a chrome-plating electrolytic solution, a preparation method and application thereof. Background technique [0002] Chromic acid (chromic anhydride) is widely used in the electroplating industry, such as: decorative chrome plating, hard chrome and roughening of plastic plating, etc. The pretreatment roughening process of plastic electroplating generally adopts chromic acid (400 g / L)\sulfuric acid (400 g / L) for roughening, and the reaction formula is as follows: [0003] CrO 3 +CH 2 →H 2 O+CO 2 +Cr 3+ [0004] Coarse plastic small enterprises consume dozens of kilograms of chromic acid a day, and large enterprises consume hundreds of thousands of kilograms a day. According to the analysis of Cr 3+ Calculation of content and production practice experience, Cr 3+ The amount of ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B9/08C04B38/00C04B38/02C25B9/19
Inventor 应建军
Owner YIXING XINGGUANG CERAMICS INST
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