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Method for producing calcium ammonium nitrate by using waste liquid produced in the production of ethylphosphorus aluminum

A technology of calcium ammonium nitrate and ethyl phosphorus aluminum, which is applied in the direction of nitrate fertilizer, application, nitrogen fertilizer, etc., to achieve the effect of simple operation, less investment in equipment, and bright colors

Active Publication Date: 2018-03-13
JURONG LVYUAN AGRI RESOURCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the prior art, the object of the present invention is to utilize the waste liquid produced by the production of ethylphosphorus aluminum with high nitrogen content and the phosphate ore tailing sand with high calcium content to produce efficient and environmentally friendly green fertilizer calcium ammonium nitrate as raw materials. That is to say, it solves the problem of waste water and slag treatment of phosphate aluminum and phosphate rock, and realizes the reuse of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mix the collected waste liquid produced in the production of ethylphosphorus aluminum with 30% nitric acid in a weight ratio of 3:7 in a 1000L reactor to make a mother liquor. Add 400Kg of mother liquor into a 1000L reactor, divide 500Kg of phosphate ore tailings into three parts on average, first put a part of phosphate ore tailings into the reactor, start the reaction, generate a large amount of gas and release heat, add after the reaction is stable The second batch of phosphate ore tailings is reacted. After the reaction is stable, the third batch of phosphate ore tailings is added for reaction until no gas escapes, which is the end of the reaction, and then the reaction product is put into the crystallization tank to cool to the environment Temperature, with the ss-1000 type centrifuge, the crystallization is centrifuged and dehydrated to no liquid and thrown out to obtain 450 Kg of calcium ammonium nitrate. The liquid thrown out is calculated based on the compositio...

Embodiment 2

[0026] The collected waste liquid produced in the production of ethylphosphorus aluminum and nitric acid with a mass percentage of 68% were uniformly mixed in a 1000L reactor at a weight ratio of 7:3 to prepare a mother liquor. Add 500Kg of mother liquor into a 1000L reactor, crush 500Kg of phosphate ore tailings to 40μm and divide them into four parts on average. After the reaction is stable, add the second batch of phosphate ore tailings for reaction. After the reaction is stable, add the third batch of phosphate ore tailings for reaction. After the reaction is stable, add the fourth batch of phosphate ore tailings for reaction until no gas escapes. Then the reaction product is put into the crystallization tank and cooled to ambient temperature, and the crystal is centrifuged and dehydrated until no liquid is thrown out with a ss-1000 type centrifuge, and 480Kg of calcium ammonium nitrate is obtained, and the liquid thrown out is used to produce B The components contained in...

Embodiment 3

[0028] Mix the collected waste liquid produced in the production of ethylphosphorus aluminum with 50% nitric acid in a weight ratio of 4:6 in a 1000L reactor to make a mother liquor. Add 400Kg of mother liquor into a 1000L reactor, crush 500Kg of phosphate ore tailings to 75μm and divide them into four parts on average. After the reaction is stable, add the second batch of phosphate ore tailings for reaction. After the reaction is stable, add the third batch of phosphate ore tailings for reaction. After the reaction is stable, add the fourth batch of phosphate ore tailings for reaction until no gas escapes. Then the reaction product is put into the crystallization tank and cooled to ambient temperature, and the crystal is centrifuged and dehydrated until no liquid is thrown out with a ss-1000 type centrifuge to obtain 500Kg of calcium ammonium nitrate, and the liquid thrown out is used to produce B The components contained in the waste liquid produced by phosphorus and aluminu...

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Abstract

The invention discloses a method for manufacturing calcium ammonium nitrate through waste liquor generated by producing aliette. The method includes the following steps: (1) the waste liquor generated by producing the aliette and nitric acid are evenly mixed according to the weight ratio being 7-3:3-7 so as to manufacture mother liquor; (2) phosphate ore tailing sand and the mother liquor are put into the mother liquor according to the proportion of the mother liquor to the mother liquor being 1.25-4:1, and stirring reactions are carried out; (3) reaction products are cooled and crystallized; (4) crystals are dehydrated to obtain the calcium ammonium nitrate. By means of the method, circulation and recycling of waste water and waste residues are achieved, the environment is protected, and resources are used; the equipment investment is less, the process procedure is short, and operation is simple; obtained products are efficient and environment-friendly green fertilizers, so that the improving effect on acid soil is achieved, and the soil becomes loose; when the fertilizers are widely used for agricultural production, in particular to industrial crop production, the flowering phase can be prolonged through the fertilizers, normal growth of roots, stems and leaves is promoted, it is guaranteed that fruits are bright in color, and the sugar in the fruits is increased.

Description

technical field [0001] The invention relates to a new process for producing chemical fertilizers from industrial waste residues and waste water, in particular to a method for producing calcium ammonium nitrate from the waste liquid produced in the production of phosphonium aluminum. Background technique [0002] With the improvement of environmental protection requirements, various waste water and waste residues must be treated before they can be discharged, so it is necessary to establish waste treatment facilities for treatment. The traditional treatment method not only requires a large investment in fixed facilities but also high operating costs, which is a major burden for the production enterprise. The enterprise needs to invest a lot of manpower and material resources in the treatment, so that the cost of the product remains high, and the loss of competitiveness faces the risk of being eliminated by the market. How to effectively utilize waste and achieve zero emission...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05C5/04
CPCC05C5/04
Inventor 汪智渊窦永敏王丽飞吴承东杨红福樊云珍
Owner JURONG LVYUAN AGRI RESOURCES CO LTD
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