Preparation method of basic zinc chloride

A technology of zinc chloride and zinc chloride solution, applied in chemical instruments and methods, zinc halide, zinc oxide/zinc hydroxide, etc., can solve the problems of by-product environmental pollution, high preparation cost, and high cost of wastewater treatment, and achieve Low price, simple preparation method, and cost-saving effect

Active Publication Date: 2013-05-29
SHENZHEN SHENTOU ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned methods generally have the disadvantage of high preparation costs, and the by-products prepared by some methods are likely to cause environmental pollution, and the waste water treatment costs generated by some reactions are also relatively high.

Method used

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  • Preparation method of basic zinc chloride

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The basic zinc chloride of the present embodiment is prepared by the following method:

[0024] First prepare reagent grade zinc chloride into a zinc chloride solution containing 50g / l of zinc, and reagent grade calcium hydroxide or reagent grade calcium oxide into a suspension containing 10% calcium hydroxide, and then add 100ml of distilled water, then turn on the stirring device, and increase the temperature to 85°C at the same time, then add 400ml of zinc chloride solution and 300ml of calcium hydroxide suspension into the reaction kettle dropwise at the same time, control the pH at 4-5, and add After completion, aging for 60 minutes, the product was filtered, washed, dried at 100°C, crushed through a 75-mesh sieve, and finally the finished product was obtained.

[0025] The crystal composition and structure of the finished product are detected by the XRD detection method, and the XRD spectrum of the finished product is consistent with the standard spectrum, so it c...

Embodiment 2

[0027] The basic zinc chloride of the present embodiment is prepared by the following method:

[0028] First prepare the reagent-grade zinc chloride into a zinc chloride solution containing 65g / l of zinc, then use slaked lime (or quicklime) to obtain a qualified suspension containing 20% ​​calcium hydroxide after digestion and purification, and then go to Add 100ml of distilled water to the reaction kettle, then turn on the stirring device, and at the same time raise the temperature to 50°C, then add 200ml of zinc chloride solution and the supernatant of 100ml of calcium hydroxide suspension to the reaction kettle dropwise at the same time, Control the pH at 5.0-6.0, age for 45 minutes after feeding, filter, wash, dry at 100°C, crush and pass through a 75-mesh sieve to finally obtain the finished product.

[0029] The crystal composition and structure of the finished product are detected by the XRD detection method, and the XRD spectrum of the finished product is consistent wi...

Embodiment 3

[0031] The basic zinc chloride of the present embodiment is prepared by the following method:

[0032] ZnCl was prepared by leaching waste zinc and sub-zinc oxide soot as raw materials with hydrochloric acid. 2 , the zinc content in the zinc chloride solution after impurity removal is 100g / l, then select slaked lime to obtain qualified suspension containing calcium hydroxide 15% after digesting and purifying slag removal, then add 100ml distilled water in the reactor, then Turn on the stirring device, and at the same time keep the temperature constant to 25°C, then add 500ml of zinc chloride solution and 500ml of calcium hydroxide suspension into the reaction kettle dropwise at the same time, control the pH at 5.5-6.5, and age for 90 minutes after the addition is completed Finally, the product is filtered, washed, dried at 100°C, crushed through a 75-mesh sieve, and finally the finished product is obtained.

[0033] The crystal composition and structure of the finished produc...

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Abstract

The invention discloses a preparation method of basic zinc chloride. The invention relates to basic zinc chloride, and in particular relates to a preparation method of basic zinc chloride of a feed additive. The invention aims to provide a preparation method of basic zinc chloride lower in cost and safe and environment-friendly. The method is characterized in that the basic zinc chloride is prepared by reaction of zinc chloride and calcium hydroxide. According to the invention, the basic zinc chloride is successfully prepared by reaction of zinc chloride and calcium hydroxide. The preparation method is simple, the process flow is short, the reaction cost is low and wastewater generated by the reaction is easy to process and save and environment-friendly. Contents of zinc and chlorine as well as arsenic, lead and cadmium in a basic zinc chloride product prepared by the preparation method provided by the invention completely meet the national standard of feed grade basic zinc chloride, and the basic zinc chloride can be directly used as the feed additive.

Description

technical field [0001] The invention relates to basic zinc chloride, in particular to a preparation method of basic zinc chloride as a feed additive. Background technique [0002] Zinc, present in all tissues and organs of the animal body, has the effect of promoting the rapid regeneration of tongue mucosal taste bud cells and enhancing appetite, and is an essential element for animals. Zinc sources commonly used in feed are zinc sulfate and zinc oxide, but their absorption and utilization rates in animals are low. Basic zinc chloride is a new pharmacological feed additive with antibacterial and antidiarrheal effects. Compared with conventional inorganic zinc salts such as zinc sulfate and zinc oxide, it has chemical stability, less dosage, good palatability, safety and non-toxicity, high utilization rate, no caking, good fluidity, and can also partially replace antibiotics, which is environmentally friendly. No pollution. The existing basic zinc chloride preparation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02
CPCA23K1/175C01G9/04C01G9/00C01P2002/72C01P2006/80A23K20/24A23K20/30
Inventor 陈志传毛谙章张银亮刘小文李钧廖春华周兆安钟淼鸣朱茜易海洋
Owner SHENZHEN SHENTOU ENVIRONMENT TECH CO LTD
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