Industrial preparation method of alkali copper sulfate

A copper sulfate and basic technology, applied in copper sulfate and other directions, can solve problems such as output limitation, and achieve the effects of improving production efficiency, being conducive to cleaning, and improving purity

Active Publication Date: 2012-07-25
苏州长湖纳米科技有限公司
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  • Abstract
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Problems solved by technology

It also solves the problem that the output is limited by raw materials in the existing preparation method and the problem of ammonia nitrogen in the production wastewater

Method used

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  • Industrial preparation method of alkali copper sulfate
  • Industrial preparation method of alkali copper sulfate
  • Industrial preparation method of alkali copper sulfate

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preparation example Construction

[0024] refer to figure 1 , the industrial preparation method of basic copper sulfate of the present invention comprises the following steps:

[0025] a, prepare to contain sulfate ion (SO 4 2- ) and copper ions (Cu 2+ ) A solution, stand-by;

[0026] Specifically, solution A can be directly acidic circuit board copper sulfate waste liquid, so that industrial waste liquid can be directly used to reduce production costs; it can also be copper sulfate solution, or it can be prepared from copper hydroxide, basic copper carbonate, and copper oxide. One or more of them react with sulfuric acid. In the present invention, there is no special requirement to the concentration of A solution, as a kind of preference, in order to give consideration to production cost, production efficiency and productivity, Cu in A solution 2+ The mass concentration is 2%~12%.

[0027] b. Preparation containing hydroxide ions (OH - ) B solution, for use;

[0028] Solution B is a soluble hydroxide s...

Embodiment 1

[0046] Dissolve copper sulfate in reactor No. 1 to form Cu 2+ A solution with a mass concentration of 2% is ready for use; dissolve sodium hydroxide in the No. 2 reactor to form OH - Mass concentration is 5% B solution, stand-by; Add citric acid to A solution, make Cu 2+ with C 6 h 5 o 7 3- The molar ratio is 1:0.01, after that, A solution and B solution are re-recorded as A1 solution and B1 solution respectively; Add 500mL water into the 2L reaction kettle, the water temperature is 35 ℃, A1 solution and B1 solution are simultaneously and slowly It flows into the reactor, and the pH electrode is used to monitor the pH value of the reaction solution in the reactor in real time during the reaction, and determine whether to adjust the flow of the two solutions according to the monitored pH value, so that the pH value of the reaction solution is controlled at about 3 and If it is greater than 3, after a period of continuous reaction, close the A1 solution and B1 solution to p...

Embodiment 2

[0048] Put a certain amount of acidic circuit board copper sulfate waste liquid into the No. 1 reactor to form Cu 2+ A solution with a mass concentration of 7.6% is ready for use; potassium hydroxide is dissolved in the No. 2 reactor to form OH - Mass concentration is 8% B solution, stand-by; Add sodium citrate in A solution, make Cu 2+ with C 6 h 5 o 7 3- The molar ratio is 1:0.3, after that, A solution and B solution are re-recorded as A1 solution and B1 solution respectively; Add 500mL water into the 2L reaction kettle, the water temperature is 50 ℃, A1 solution and B1 solution are simultaneously and slowly Flow into the reaction kettle, use the pH electrode to monitor the pH value of the reaction solution in the reaction kettle in real time during the reaction, and determine whether to adjust the flow of the two solutions according to the monitored pH value, so that the pH value of the reaction solution is controlled at about 5, After continuous reaction for a period ...

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Abstract

The invention discloses an industrial preparation method of alkali copper sulfate. The used materials are non-toxic and harmless and can be obtained at low cost, which is good for industrial production; in the production process, citric acid root ion is used as a complexing agent so that the product grain size is increased, which is beneficial to cleaning; usually, washing just needs to be carried out twice and the production efficiency is improved; after reaction, the citric acid root ion is remained in the waste water, is non-toxic, pollution-free and degradable, and can be complex with heavy metal ions (such as arsenic and lead) possibly existing in the production system so that the heavy metal ions can be discharged out of the production system together with the waste water, thereby effectively preventing the heavy metal ions from entering the target output and further improving the purity of the product. In addition, ammonia nitrogen is not involved in the production process, thereby solving the problem of recycling of ammonia nitrogen in the traditional method. Therefore, the invention has favorable social and economical benefits.

Description

technical field [0001] The invention relates to a preparation method of a copper compound, in particular to an industrial preparation method of basic copper sulfate. Background technique [0002] Basic copper sulfate is the main component of the inorganic copper fungicide Bordeaux mixture. It can be used as an additive of trace element copper in feed, and can also be widely used in pollution-free pesticides as fungicides and insecticides. However, it has been lacking in the market. A preparation method with high production efficiency and good product quality. For example, the patent application No. 201010117119.9 proposes a method for preparing basic copper sulfate by using electronic waste liquid to add alkali to discharge ammonia, which can prepare basic copper sulfate, but there are the following main disadvantages: 1. Copper ammonium solution is in alkaline condition It is easy to form copper hydroxide, which affects the purity and quality of the product; 2. There is am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/10
Inventor 廖勇志
Owner 苏州长湖纳米科技有限公司
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