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Preparation method and application of copper/zinc selenite

A technology of copper selenite and zinc selenite, applied in application, chemical instruments and methods, inorganic chemistry and other directions, can solve the problems of difficult to control product quality, large fluctuation of selenium content, difficult preparation and operation, etc., to achieve saving The effect of preparation time, slowing down the reaction rate, and improving process efficiency

Active Publication Date: 2017-05-31
XINGJIA BIO ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technical solutions are limited by the preparation method, not only the composition is complicated, the preparation operation is difficult, but also the selenium content fluctuates greatly, it is difficult to control the quality of the product

Method used

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  • Preparation method and application of copper/zinc selenite
  • Preparation method and application of copper/zinc selenite
  • Preparation method and application of copper/zinc selenite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: the preparation method of zinc selenite

[0044] A preparation method of zinc selenite of the present invention, comprises the following steps:

[0045] Start stirring, and the purity is that 98% selenium dioxide 583g joins in the beaker that 1000g water is housed, and then adding purity is 98% basic zinc chloride 532g, after basic zinc chloride dissolves, add 168g sodium bicarbonate, And adjust the pH value to 5.0 with 5% sodium bicarbonate solution, and stir to make it fully react for 1 h. Then filter, wash, dry in an oven, and pulverize to obtain 902.4 g of zinc selenite product.

[0046] Through detection and analysis, Zn in the zinc selenite product that present embodiment obtains 2+ The content is 33.2%, the total selenium content is 40.2%, and the water loss rate of the product at 105°C is 0.56%, that is, Zn 2+ : Se 4+ =1:1, the yield is 94% (calculated as zinc), and the purity is 98%.

[0047] Among them, total selenium is detected by atomic f...

Embodiment 2

[0048] Embodiment 2: the preparation method of zinc selenite

[0049] A preparation method of zinc selenite of the present invention, comprises the following steps:

[0050] Turn on the stirring, and add 532.8Kg of selenium dioxide with a purity of 98% to a 5m tank with 390Kg of water 3 In the reaction kettle, add 458Kg of basic zinc sulfate with a purity of 98% to the reaction system, add 168Kg sodium bicarbonate after the basic zinc sulfate dissolves, and adjust the pH value to 5.5 with 5% sodium bicarbonate solution, stir to make it fully Reaction 1.5h. Then filter, wash, oven dry, pulverize, obtain zinc selenite product 745Kg.

[0051] Through detection and analysis, Zn in the zinc selenite that present embodiment obtains 2+ The content is 33.1%, the total selenium content is 40.2%, and the water loss rate of the product at 105°C is 0.72%, that is, Zn 2+ : Se 4+ =1:1, the yield is 97% (calculated as zinc), and the purity is 98%.

Embodiment 3

[0052] Embodiment 3: the preparation method of copper selenite

[0053] A preparation method of copper selenite of the present invention, comprises the following steps:

[0054] Turn on the stirring, and add 244.2Kg of selenium dioxide with a purity of 98% to a 5m tank with 336Kg of water 3 In the reaction kettle, add 213.5Kg basic copper chloride with a purity of 98% to the reaction system, add 84Kg potassium bicarbonate after the basic copper chloride dissolves, and adjust the pH value with a mass concentration of 5% potassium hydrogencarbonate solution 8.0, stirred to make it fully react for 2h, then centrifuged, the wet material was washed, dried, and pulverized to obtain 366Kg of copper selenite product. The basic copper chloride is selected from dry tailings or unqualified graded materials in the preparation of feed grade basic copper chloride products.

[0055] Through detection and analysis, Cu in the copper selenite obtained in the present embodiment 2+ The content...

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Abstract

A preparation method of copper / zinc selenite and application thereof, the preparation method comprises the following steps: adding selenium dioxide into water, then adding basic copper / zinc salt to the reaction system, and adjusting with strong base and weak acid salt The pH value of the reaction system, stir to make it fully react for a period of time, then carry out solid-liquid separation, wash, dry and pulverize the product obtained after solid-liquid separation to obtain copper selenite / zinc product. The copper / zinc selenite obtained by the preparation method of the present invention can be used as an animal feed additive, and the added amount in each ton of animal feed is 0.1-0.5 g / t in terms of selenium. The comprehensive purpose of good feeding effect, no moisture absorption and moisture return of the feed / premix, and no reaction with the reducing substances in the premix.

Description

technical field [0001] The invention relates to a preparation method and application of a feed additive, in particular to a preparation method of selenite and its application as a feed additive. Background technique [0002] Trace element copper can effectively participate in important physiological processes such as cell oxidation, bone and connective tissue formation, keratinization, tissue pigmentation, and spinal cord myelin formation, and plays an important role in maintaining normal cardiac function. Copper is also an essential component of some enzyme systems, especially the metalloenzymes related to cell oxidation, which directly participate in the body's metabolism. Copper is closely related to the absorption and function of iron. It can maintain the normal metabolism of iron, which is beneficial to the synthesis of hemoglobin and the maturation of red blood cells. It can also participate in the reproductive activities of the body by promoting the secretion of lutei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/00A23K20/20
Inventor 黄逸强姚亚军邓敏袁燕平夏飞辉印遇龙吴信
Owner XINGJIA BIO ENG CO LTD