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Method for preparing trace element additive basic zinc chloride

A technology of trace elements and zinc chloride, which is applied in the direction of zinc halide, additional food elements, animal feed, etc., can solve the problems of expensive raw materials and high production costs, and achieve the effect of improving purity, low production cost and low price

Active Publication Date: 2008-08-27
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 existing basic zinc chloride, it is produced by using waste zinc, produced by the reaction of zinc chloride and zinc oxide, and produced by the reaction of hydrochloric acid and zinc oxide. These preparation methods are all faced with A common disadvantage is that the raw materials are relatively expensive and the production cost is too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Prepare basic zinc chloride by following reaction steps: get 39.5g mass concentration earlier and be the concentrated hydrochloric acid of 37%, dilute concentrated hydrochloric acid with 80ml water, then slowly drop into the hydrochloric acid after the basic zinc carbonate of 68.4g, Adjust the pH value to 6.5 at a reaction temperature of 75° C., react for 1 hour under normal pressure, and then wash with water, centrifugally separate, dry, and pulverize, and finally prepare the finished product of basic zinc chloride. The finished product has a zinc content of 58.5%. React the reaction liquid after the above centrifugation with 32.56g of zinc oxide for 1 hour under normal pressure at a reaction temperature of 95°C, and then wash with water, centrifuge, dry, and pulverize to obtain the finished product of basic zinc chloride , the zinc content in the finished product is 59.6%.

Embodiment 2

[0019] Prepare basic zinc chloride through the following reaction steps: first put 400Kg of concentrated hydrochloric acid with a mass concentration of 36.5% into the reactor that has added 1000Kg of reaction water and stir fully, then slowly drop 685Kg of basic zinc carbonate into the reactor React with diluted hydrochloric acid, adjust the pH value to 7 at a reaction temperature of 80°C, and react for 1.5 hours under normal pressure, then wash with water, centrifugally separate, dry, and pulverize, and finally prepare the finished product of basic zinc chloride 551Kg. The finished product has a zinc content of 59%. The centrifuged reaction solution reacted with 325Kg zinc oxide for 50 minutes under the normal pressure condition of 95°C, and then washed with water, centrifuged, dried and crushed to prepare 550Kg of basic zinc chloride product. The medium zinc content is 59.3%.

[0020] Because the price of basic zinc carbonate (in terms of zinc) is about 30% lower than that...

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PUM

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Abstract

The invention discloses a preparing process for a trace element addition agent of basic zinc chloride, which is characterized in that adding basic zinc carbonate in hydrochloric acid, wherein the mole ratio of usage of the basic zinc carbonate to content of hydrogen chloride of the hydrochloric acid is 2 : 4, the reaction product can be obtained under the temperature of 60-95 DEGC in 5-8 pH value, then washing, centrifugal separating and drying the reaction product, thereby obtaining the basic zinc carbonate. The reaction solution from centrifugal separation can be used as a mother solution of the other preparing process, which can further react with zinc oxide to form the basic zinc carbonate, thereby realizing recycling of secondary product. The preparing process has the advantages of simple process, low cost, reliable quality without impurity, little environmental pollution and the like.

Description

technical field [0001] The invention relates to a preparation method of zinc halide, in particular to a preparation method of basic zinc chloride which can be used as a feed additive. 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 existing basic zinc chloride, it is produced by using waste zinc, produced by the reaction of zinc chloride and zinc oxide, and produced by the reaction of hydrochloric acid and zinc oxide. These preparation methods are all faced with A common disadvantage is that the raw materials are relatively expensive and the production cost is too high. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/04A23K1/16A23K20/20A23K50/30A23K50/75A23K50/80
Inventor 黄逸强
Owner XINGJIA BIO ENG CO LTD
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