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Preparation method of basic zinc chloride

A technology of zinc chloride and zinc chloride solution, applied in the direction of zinc halide, animal feed, additional food elements, etc., can solve the problems of expensive raw materials, high production cost, environmental pollution of by-products, etc. The effect of low, low content of harmful impurities

Active Publication Date: 2010-05-26
XINGJIA BIO ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current production and preparation process of basic zinc chloride, it can be produced by using waste zinc, by reacting zinc chloride and zinc oxide, or by reacting hydrochloric acid and zinc oxide or by reacting hydrochloric acid and basic zinc carbonate. Yes, in these preparation methods, the production cost of some methods is too high, the price of raw materials used in some methods is relatively expensive, and the by-products obtained in some preparation methods are likely to cause environmental pollution, and there are certain limitations.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of basic zinc chloride of the present invention, comprising the following steps: first add 150ml of water to the reaction pot, then turn on the stirring device, drop 20.8g of zinc chloride into the reaction pot, and then heat up to 100°C , and then slowly add 9.4g of sodium hydroxide, and react at a constant temperature for 2 hours under the condition of pH value of 5-9, then lower the temperature, stir and cool with cooling water, and centrifuge the material at a speed of 1000r / min, and put it into the drying room at 85°C Dried until the water content is below 10%, crushed and passed through a 60-mesh sieve, and finally the finished product is prepared.

[0021] The crystal composition and structure of the finished product are detected by the conventional XRD detection method, and combined with the basic principle of chemical reaction, it can be determined that the finished product is basic zinc chloride. The zinc content in the finished product is...

Embodiment 2

[0023] A preparation method of basic zinc chloride of the present invention, comprising the following steps: first add 300ml of water to the reaction pot, then turn on the stirring device, drop 60.0g of zinc chloride into the reaction pot, and then heat up to 65°C , then slowly add 46g of ammonia water containing 26% of ammonia, and react at a constant temperature for 1h under the condition of pH value of 5-9, then lower the temperature, stir and cool with cooling water, and centrifuge the material, the centrifugal speed is 1100r / min, and put it into the drying room at 95 Dry at ℃ until the water content is below 10%, crush and pass through a 60-mesh sieve, and finally prepare the finished product of basic zinc chloride. The finished product contained 58.72 percent zinc, 1.8 ppm arsenic, 2.2 ppm lead and 2.9 ppm cadmium. The detection method of product is identical with embodiment 1.

Embodiment 3

[0025] A preparation method of basic zinc chloride of the present invention comprises the following steps: first add 1000kg of water to the reaction pot, then open the stirring device, drop into the reaction pot 280kg of zinc chloride, then heat up to 80°C, Then slowly add 215 kg of ammonia water with an ammonia content of 26%, and react at a constant temperature for 1 hour under the condition of a pH value of 5 to 9, then lower the temperature, stir and cool with cooling water, and centrifuge the material at a centrifugal speed of 500 r / min. Dry at ℃ until the water content is below 10%, crush and pass through a 60-mesh sieve, and finally prepare the finished product of basic zinc chloride. The finished product contained 58.92 percent zinc, 1.5 ppm arsenic, 2.0 ppm lead and 2.3 ppm cadmium. The detection method of product is identical with embodiment 1.

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Abstract

The invention discloses a preparation method of basic zinc chloride, comprising the following steps of: adding sodium hydroxide or ammonia water into zinc chloride solution with the mol ratio of the sodium hydroxide or ammonia water to zinc chloride solution of 7.5-8.5:5, reacting under the condition that the temperature is 60-105 DEG C and the pH value is 5-9, and obtaining reaction products after the reaction is finished; and washing with water, centrifuging and drying reaction products to obtain the basic zinc chloride. The preparation method is simple and safe in operation, and has the advantages of little waste emission, low production cost and excellent product quality.

Description

technical field [0001] The invention relates to a preparation method of a zinc compound, in particular to a preparation method of a zinc halide. Background technique [0002] As a new zinc source feed additive, basic zinc chloride has low addition level, less dosage, good palatability, high biological potency and feeding effect compared with conventional zinc sources such as zinc oxide and zinc sulfate. It is a new type of feed additive that is safe, efficient, environmentally friendly and has comprehensive effects. In the current production and preparation process of basic zinc chloride, it can be produced by using waste zinc, by reacting zinc chloride and zinc oxide, or by reacting hydrochloric acid and zinc oxide or by reacting hydrochloric acid and basic zinc carbonate. Yes, among these preparation methods, the production cost of some methods is too high, the raw materials used in some methods are relatively expensive, and the by-products obtained in some preparation me...

Claims

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Application Information

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IPC IPC(8): C01G9/04A23K1/175A23K20/20
Inventor 黄逸强
Owner XINGJIA BIO ENG CO LTD
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