Preparation an use of selenium-coated copper chloride hydroxide

Abstract

The invention discloses a method for preparing selenium-coated basic cupric chloride and an application thereof. The method comprises the following steps: a. crystalline phase basic cupric chloride, water and a stabilizer are added to a reactor and added with sodium hydroxide solution while stirring; discharge, washing and negative pressure suction filtration are carried out after reaction to obtain hydroxyl-modified crystalline phase basic cupric chloride; b. the hydroxyl-modified crystalline phase basic cupric chloride and water are added to the reactor, and added with selenious acid while stirring, after reaction, added with chalcanthite for reaction, discharged, washed and negative pressure suction filtration are carried out to obtain the selenium-coated basic cupric chloride containing the crystalline phase basic cupric chloride, basic cupric selenite and basic cupric sulfate. The selenium-coated basic cupric chloride prepared by the method can be taken as a trace mineral supplement of animal feeds and has the advantages of no absorption of moisture and no agglomeration, good fluidity, stable chemical properties, good cooperation with the feeds, low price, low addition cost, soluble subacidity, easy absorption and application, etc.

Description

【Technical field】 [0001] The invention relates to a preparation method of a compound, in particular to a preparation method and application of selenium-coated basic copper chloride. 【Background technique】 [0002] Selenium was initially listed as a toxic substance, but it was not recognized as an essential trace element until 1957, when selenium was found to prevent certain diseases. In 1973, it was determined that selenium is an essential component of glutathione peroxidase by labeling technology, thus confirming that selenium is an essential trace element for animals. In the same year, the World Health Organization announced that selenium is an essential trace element for human physiology. In 1974, the US FDA began to allow the addition of selenium to animal feed. [0003] The biological effects of selenium in animals are: (1), selenium removes lipid peroxides through the enzymatic reaction of glutathione peroxidase, blocks the pathogenic effects of active oxygen and fre...

AI Technical Summary

Problems solved by technology

However, because sodium selenite has the physical and chemical characteristics of being easy to dissolve in water, easy to absorb moisture and agglomerate, and has poor fluidity, and the selenium content is only 2 / 10,000, it is difficult to mix and disperse uniformly.

The second is to use hulled bran powder as an adsorbent, and sodium selenite is made into an aqueous solution and sprayed on the hulled bran powder, mixed evenly to make a selenium diluent, and then mixed with other raw materials and dried to make a selenium premix. This method There are also the above-mentioned shortcomings, and it is necessary to increase multiple processes, the production cost is relatively high, and it is not suitable for intensive production

However, regarding selenium-copper compound element feed additives, especially regarding the combination of good physical and chemical properties such as crystalline basic copper chloride, good fluidity, suitable particle size, low water solubility, and no moisture and agglomeration, and the cost of sodium selenite Selenium-copper compound element feed additive with low both advantages, there is no literature report at home and abroad at present

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