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Preparation method of trace element additive basic zinc sulfate

A trace element, zinc sulfate technology, applied in the direction of zinc sulfate, additional food elements, animal feed, etc., can solve the problems of high cost, high content of harmful impurities, complicated preparation process, etc., and achieves low addition level, product quality without impurities, Simple preparation process

Active Publication Date: 2012-10-03
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 sulfate, zinc sulfate and calcium hydroxide are used to prepare zinc sulfate, and zinc lead sulfate ore is also used to prepare production. These preparation methods all face a common shortcoming, that is, the preparation process Complex, relatively high cost, and high content of harmful impurities

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Prepare basic zinc sulfate by the following method steps: first take 16.05g of zinc sulfate monohydrate, dissolve it by heating with 100ml of water, then slowly put 29.11g of zinc oxide into the dissolved zinc sulfate aqueous solution, at a reaction temperature of 90°C Adjust the pH value to 6.7, react under normal pressure for 2.5 hours, wash with water, then centrifuge, dry at 95°C by airflow drying, and pulverize to obtain the finished product of basic zinc sulfate. The zinc content in the finished product was 58.2%.

Embodiment 2

[0022] Prepare basic zinc sulfate through the following reaction steps: first put 200Kg of zinc sulfate heptahydrate into the reaction kettle that has been added with 1000Kg of reaction water and stir fully, then slowly put 360Kg of zinc oxide into the reaction kettle with the dissolved zinc sulfate Carry out the reaction, adjust the pH value to 6.7 at a reaction temperature of 95°C, react for 2.5 hours under normal pressure conditions, wash with water and centrifuge, dry at 105°C with a flash drying method, pulverize, and finally prepare basic sulfuric acid Zinc finished product 620Kg. The finished product has a zinc content of 58.3%.

Embodiment 3

[0024] Biological potency evaluation and broiler chicken feeding experiment on basic zinc sulfate. Select 288 hatched AA broilers from the same batch and randomly divide them into 8 groups, with 6 replicates in each group and 6 broilers in each replicate (half male and half female). The test group used reagent grade zinc sulfate, basic zinc sulfate and zinc oxide as zinc sources, and reagent grade zinc sulfate and zinc oxide were respectively selected from two groups and the addition amount was 200 mg / kg (the addition amount in the full-price feed , the same below), 250mg / kg as controls; three groups of basic zinc sulfate were selected, and the addition amount of each group was 100mg / kg, 200mg / kg, and 250mg / kg; the control group did not add zinc source. The test results are shown in Table 1 and Table 2:

[0025] Table 1: Comparison table of relative biological potency of different zinc sources

[0026] zinc source

[0027] Table 2: Effect of adding basic zinc sulfa...

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PUM

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Abstract

The invention discloses a preparation method of a trace element additive basic zinc sulfate. The method comprises the following steps: firstly, adding zinc oxide to zinc sulfate aqueous solution the mass concentration of which is 10-45% and in which the mol ratio of the zinc oxide to the zinc sulfate is 3-7:1, reacting the zinc oxide with the zinc sulfate aqueous solution at the temperature of 70-100 DEG C and pH value of 5-8 for 0.5-4 hours to obtain a reaction product; and obtaining the finished product by washing, centrifuging, drying and crushing the reaction product. The preparation method has the advantages of simple process route, easy operation, stable product quality and no impurity, and can meet the requirements of environmental protection and clean production.

Description

technical field [0001] The invention relates to a preparation method of a trace element additive, in particular to a preparation method of a trace element additive basic sulfate. Background technique [0002] In today's aquaculture industry, the application of zinc is indispensable, but zinc sulfate or zinc oxide is generally used as zinc element additives. Zinc sulfate is mostly produced by secondary zinc oxide, and some are even produced by copper cadmium slag, and the removal of impurities is not complete. The cadmium content in the produced zinc sulfate products often exceeds the standard, even reaching more than 1%. Potassium permanganate is used as the oxidizing agent in the production process, and there is still the problem of oxidizing agent residue, which will also affect the product quality during the production of the premix, and the appearance color will change. The biological potency of zinc oxide is low. To achieve the feeding effect of high zinc, the amount o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/06C05D9/02A23K1/175A23K20/20
Inventor 黄逸强
Owner XINGJIA BIO ENG CO LTD
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