Acid-soaked cadmium-selenium contained acid pickle direct recycling method

A waste acid liquid and acid immersion technology, which is applied in the field of ceramic pigment production, to achieve the effects of easy recycling, reducing environmental pollution, and reducing costs

Active Publication Date: 2015-10-28
LILING KEXING IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] At the same time, it effectively solves the difficulty in the treatment of acid-soaked cadmium-containing and selenium-containing waste acid in the production of zirconium silicate-wrapped cadmium selenide pigments. environmental pollution problem

Method used

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  • Acid-soaked cadmium-selenium contained acid pickle direct recycling method

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Embodiment

[0039] A method for direct recycling of waste acid liquid containing cadmium and selenium after acid soaking, using zirconium oxychloride, sodium hydroxide and sodium sulfide to process the waste acid liquid containing cadmium and selenium after acid soaking in the production of wrapped color materials; zirconium oxychloride and Acid soaking waste acid solution containing cadmium and selenium to prepare an acidic mixed solution, adding sodium hydroxide and sodium sulfide to prepare an alkaline mixed solution according to the required amount of water, then adding the acidic mixed solution to the alkaline mixed solution, and stirring After reacting with chemical reaction, press filter washing, dry, mix with mineralizer, white carbon black, selenium powder evenly, then calcined at high temperature, and the calcined product is acidified, ball milled, press filtered, washed with water, alkali boiled, press filtered 1. The process of washing with water, and drying to obtain a zirconi...

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Abstract

The invention discloses an acid-soaked cadmium-selenium contained acid pickle direct recycling method. Acid-soaked cadmium-selenium contained acid pickle is directly used for preparing and producing a zirconium silicate microcrystal wrapped cadmium selenide pigment after being subjected to comprehensive treatment by use of a chemical reaction method. Zirconium oxychloride, sodium hydroxide and sodium sulfide are used for performing treatment on the acid-soaked cadmium-selenium contained acid pickle; after the zirconium oxychloride is added into the acid-soaked cadmium-selenium contained acid pickle, and the sodium hydroxide and the sodium sulfide are prepared to be a mixed solution by the addition of water according to needs, after a stirring synthetic reaction, filter pressing and washing are performed, drying is performed, then the obtained mixture is mixed with a mineralizer, white carbon black and selenium powder to be uniform, then high-temperature calcination is performed, the calcined product is subjected to the working procedures including acidification, ball-milling, filer pressing, washing, soda boiling, filer pressing and washing, and the zirconium silicate microcrystal wrapped cadmium selenide pigment product is obtained after drying.

Description

technical field [0001] The invention relates to a coloring of ceramic decorative materials and a production process of pigments, especially to the direct recycling and utilization of waste acid solution containing cadmium and selenium in the acid soaking process in the production of zirconium silicate-wrapped color materials to produce zirconium silicate The invention relates to a process method for wrapping color materials, which belongs to the technical field of ceramic color materials production. [0002] Background technique: [0003] In the production of zirconium silicate-wrapped cadmium sulfoselenide series pigments (that is, wrapping bright red, wrapping orange, and wrapping yellow), since the color-forming agent cadmium sulfide or cadmium selenide is not completely wrapped by zirconium silicate crystals, it must be soaked in acid In the process, the unwrapped cadmium sulfide or cadmium selenide is soaked and cleaned to ensure the pure color of the pigment. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/85
Inventor 丁伯平
Owner LILING KEXING IND CO LTD
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