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A process for producing zinc-containing compounds by an acid-base combination method

A zinc compound, acid-base combination technology, applied in the direction of improving process efficiency, can solve problems such as single product, and achieve the effects of large production profit, simple process flow and low production cost

Active Publication Date: 2016-03-02
邱政
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of consumables and relatively single products obtained from the process line in the above-mentioned technologies, a process method for producing zinc-containing compounds by an acid-base combination method was invented, aiming at standardizing the production process, reducing consumables to the greatest extent, and using a relatively simple process Process produces more product

Method used

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  • A process for producing zinc-containing compounds by an acid-base combination method

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Embodiment 1

[0021] Production of zinc hydroxide: After dissolving and leaching zinc from zinc-based alloy copper plating waste with excess sulfuric acid solution, the resulting zinc-containing solution is filtered and the filtrate obtained is purified to remove impurities, and the acidic purification solution obtained is the acidic zinc-containing solution for use: In addition, take the zinc-based alloy electroplating copper waste and add excess sodium hydroxide to stir to dissolve, and then filter the obtained zinc-containing liquid and then purify and remove impurities to obtain an alkaline zinc-containing liquid purification liquid, which is alkaline zinc-containing liquid, for subsequent use; The zinc-containing liquid and the above-mentioned alkaline zinc-containing liquid are mixed and reacted in a ratio of 1:1, and the obtained liquid is filtered after the reaction, and the obtained filter cake is washed with water for 2 to 3 times, and then dried at 130°C for 1.2h, and the obtained ...

Embodiment 2

[0023] Production of zinc oxide: After dissolving nickel-melted zinc slag with excess sulfuric acid solution to leach zinc, the obtained zinc-containing solution is filtered and the filtrate is purified to remove impurities, and the acidic purification solution is the acidic zinc-containing solution. Add excess sodium hydroxide to the zinc slag and stir to dissolve, filter the obtained zinc-containing liquid and then purify and remove impurities to obtain an alkaline zinc-containing liquid purification liquid, which is alkaline zinc-containing liquid, for subsequent use; The neutral zinc-containing solution is mixed according to the ratio of 1:1 for reaction. After the reaction, the obtained liquid is filtered, and the obtained filter cake is washed with water for 2 to 3 times, and then dried at 120°C for 1 hour. The obtained is zinc hydroxide, and then the hydrogen Zinc oxide is dried at 120°C for 1 hour to obtain the product. The obtained zinc oxide can be active zinc oxide o...

Embodiment 3

[0025] Production of elemental zinc: After dissolving and leaching zinc from the molten sponge copper waste with excess sulfuric acid solution, the resulting zinc-containing solution is filtered and the filtrate is purified to remove impurities, and the acidic purification solution is the acidic zinc-containing solution. Add excess sodium hydroxide to the sponge copper and molten zinc fume and stir to dissolve, then filter the obtained zinc-containing liquid and then purify and remove impurities to obtain an alkaline zinc-containing liquid purification liquid, which is alkaline zinc-containing liquid, for subsequent use; the above-mentioned acidic zinc-containing liquid Mix with the alkaline zinc-containing solution obtained above in a ratio of 1:1 for reaction, filter the obtained liquid after the reaction, wash the obtained filter cake with water for 2 to 3 times, dry at 140°C for 0.8h, and obtain zinc hydroxide , and then dissolve the zinc hydroxide with an excessive amount ...

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Abstract

A process for producing zinc compound by an acid and alkali combination method includes steps of (1) dissolving a zinc-based material in an acid solution, filtering and purifying to obtain an acid zinc-based solution for reservation, (2) taking the other zinc-base material and dissolving the same in an alkali solution, filtering and purifying to obtain an alkali zinc-based solution for reservation, and (3) mixing the acid zinc-based solution and the alkali zinc-based solution according to the proportion of 1:1 to react to obtain a liquid, filtering the liquid to obtain a filter cake, washing the filter cake by two or three times with water, drying the filter cake at the temperature of 130-140 DEG C for 0.8-1.2 hours to obtain zinc hydroxide so as to obtain products according to production requirements. The process is simple and effective and needs a small quantity of acid and alkali solutions relatively; by the process, category range of products is wide and quality thereof is good; further, the process for producing zinc oxide at low temperature needs low energy consumption as compared with conventional methods so that production cost is lowered and production profit is high.

Description

technical field [0001] The invention relates to a process for producing zinc compounds, in particular to a process for producing zinc-containing compounds by an acid-base combination method. Background technique [0002] Zinc metal, zinc alloy, and zinc compound are indispensable and very important elements for humans, animals and plants. However, due to the production of many toxic and harmful gases, waste liquids and residues in the process of refining many zinc-related products, these waste The efflux has caused serious pollution to the ecological environment. Therefore, the contradiction between the production and supply of zinc products and the environment is prominent. If the fire method is used, it is very difficult to meet the environmental protection requirements. In order to solve the contradiction between supply and demand and the environment, it is best to use the full wet production process. The recovery of zinc-containing compound materials is used to produce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00
CPCY02P10/20
Inventor 邱政邱纪文
Owner 邱政