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Basic zinc chloride particulate matter and preparation method thereof

A technology for zinc chloride and particulate matter, applied in the field of basic zinc chloride particulate matter and its preparation, can solve the problems of large dust in the working environment, difficult mixing of premixes and the like, and achieves low production cost, environmental protection and economical production process, and flowability. good effect

Active Publication Date: 2018-03-30
GUANGZHOU KECHENG ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can well solve the problems existing in the existing feed enterprises in the process of using basic zinc chloride to prepare premixes, such as large dust in the working environment and difficulty in mixing the premixes evenly.

Method used

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  • Basic zinc chloride particulate matter and preparation method thereof
  • Basic zinc chloride particulate matter and preparation method thereof
  • Basic zinc chloride particulate matter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] S1. Zinc oxide is dissolved in hydrochloric acid to prepare a zinc chloride solution;

[0049] S2. The pH of the preparation is more than 10 ammonia solution, and in the ammonia solution, ammonium chloride is added as an inducer, and ammonium chloride is used as the main source of chloride ions in the solution, so that the concentration of ammonia nitrogen in the final solution is 140 ~ 170g / L, chlorine The ion concentration is 80~160g / L;

[0050] S3. Using the mixed solution obtained in S2 to carry out complex ammonia leaching of zinc oxide to prepare a zinc ammonia complex solution;

[0051] S4. Add clear water into the reaction vessel, heat it to 70~90°C, and simultaneously add the zinc chloride solution described in S1. and the zinc ammonia complex solution described in S3. to maintain the reaction pH value at 6.0 ~7.0, react for 2~4 hours, and react to obtain precipitates and zinc-containing mother liquors. After washing and drying, the precipitates become beige o...

Embodiment 8

[0056] S1. Using zinc-containing flue ash as raw material, leaching with hydrochloric acid and removing impurities to obtain a zinc chloride solution. Water is added to the solution to adjust the zinc concentration to between 60 g / L to obtain a purified zinc chloride solution.

[0057] S2. The pH of the preparation is more than 10 ammonia solution, and in the ammonia solution, ammonium chloride is added as an inducer, and ammonium chloride is used as the main source of chloride ions in the solution, so that the concentration of ammonia nitrogen in the final solution is 140 ~ 170g / L, chlorine The ion concentration is 80~160g / L;

[0058] S3. Add zinc-containing flue ash to the mixed solution prepared in S2., and carry out complex ammonia leaching. When the zinc concentration in the liquid phase reaches 60g / L, filter and separate, and continue the complex ammonia leaching in the solid phase. Add zinc powder to replace and remove impurities to obtain a purified zinc-ammonia compl...

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Abstract

The invention discloses a basic zinc chloride particulate matter and a preparation method thereof. The basic zinc chloride particulate matter mainly consists of basic zinc chloride particles. D10 of the basic zinc chloride particles is greater than 100 mu m, D95 of the basic zinc chloride particles is greater than 450 mu m, and the basic zinc chloride particles do not contain a binder. The appearance of the basic zinc chloride particles contained in the basic zinc chloride particulate matter is mostly spherical, and the basic zinc chloride particles having a particle diameter of greater than 500 mum in the basic zinc chloride particle matter accounts for 1% or lower of the total weight of the basic zinc chloride particulate matter. The basic zinc chloride particulate matter has a relatively large particle size and good flowability, does not cause dust flying and flows easily during use, and solves the problems that more dust appears in the work environment and a premix is difficult touniformly mix in the process of preparing the premix by using basic zinc chloride by the existing feed enterprise. The preparation process provided by the invention uses ammonium chloride as an inducer without additional introduction of impurities, the production wastewater can be completely recycled, the production cost is low, and the production process is environmentally friendly and economical.

Description

technical field [0001] The invention relates to the field of mineral feed additives, in particular to a basic zinc chloride granule and a preparation method thereof. Background technique [0002] As a new type of mineral feed additive, basic zinc chloride has the advantages of stable chemical structure, low dosage, high bioavailability, and non-caking compared with conventional mineral feed additives such as zinc sulfate and zinc oxide. Although many existing liquid-solid phase synthesis methods and liquid-liquid phase synthesis methods can synthesize basic zinc chloride, the price of raw materials is generally relatively expensive, and the synthesized basic zinc chloride has a small size and a specific surface area. Large, poor filtration and washing performance, powdery product after drying, generating a lot of dust, harsh production environment, and most of them are produced by batch reaction. [0003] Increasing the particle size of basic zinc chloride can effectively s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/04
CPCC01G9/04C01P2006/80C01P2004/61C01P2004/32C01P2004/30C01P2004/03C01P2004/51C01P2002/30A23K20/30
Inventor 黄智源吴阳东叶成伟王皓查正炯王永成
Owner GUANGZHOU KECHENG ENVIRONMENTAL PROTECTION TECH
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