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Preparation method of zinc sulfide

A zinc sulfide and zinc oxide technology, applied in the direction of zinc sulfide, can solve the problems of harm, uneven particle size, low conversion rate, etc., and achieve the effect of reducing potential safety hazards, simple synthesis process and reducing hard agglomeration

Pending Publication Date: 2022-04-12
广东鑫达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the production and preparation process of zinc sulfide is complex. Due to insufficient purification and separation and oxidation during storage, zinc sulfide powder usually contains a small amount of sulfate radicals, and the conversion rate of zinc sulfide is about 50%. Very low, coarse particles and uneven particle size, and because hydrogen sulfide gas is highly toxic, there is a huge safety hazard in production, and the "three wastes" discharge is large, causing too serious harm to the environment, making it difficult to develop production , the output is difficult to increase, facing very serious sewage treatment problems

Method used

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  • Preparation method of zinc sulfide

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Effect test

Embodiment 1

[0019] Step 1. Weigh a certain amount of zinc oxide and add it into a grinder to grind it into powder. Put sulfuric acid in a clean beaker. The ratio of zinc oxide to sulfuric acid is 1:3, and the concentration is 10%. Zinc, control the pH value between 5-7;

[0020] Step 2. Add sodium sulfide to the above solution, and then pour it into the lining of the stainless steel reaction kettle after reaction, put the reaction kettle in the oven, keep the temperature and continue stirring for 15 hours, control the pH value between 6-8, and keep the temperature at 40°C, the stirring speed was kept at 60 rpm;

[0021] Step 3. After the reaction is over, take it out of the oven to cool, then take out the lining of the reaction kettle, separate the product by centrifugation, wash it with distilled water three times and filter it, and finally dry it in an oven at 50°C for 5 hours, and grind it with a mortar Finely get zinc sulfide.

Embodiment 2

[0023] Step 1. Weigh a certain amount of zinc oxide and add it into a grinder to grind it into powder. Put nitric acid in a clean beaker. The ratio of zinc oxide and nitric acid is 1:7, and the concentration is 45%. Zinc, control the pH value between 5-7;

[0024] Step 2. Add sodium sulfide to the above solution, and then pour it into the lining of the stainless steel reaction kettle after reaction, put the reaction kettle in the oven, keep the temperature and continue stirring for 15 hours, control the pH value between 6-8, and keep the temperature at 120°C, the stirring speed is kept at 300 rpm;

[0025] Step 3. After the reaction is over, take it out of the oven to cool, then take out the lining of the reaction kettle, separate the product by centrifugation, wash it with distilled water three times and filter it, and finally dry it in an oven at 50°C for 5 hours, and grind it with a mortar Finely get zinc sulfide.

Embodiment 3

[0027] Step 1. Weigh a certain amount of zinc oxide and add it into a grinder to grind it into powder. Put hydrochloric acid in a clean beaker. The ratio of zinc oxide to hydrochloric acid is 1:5, and the concentration is 15%. Zinc, control the pH value between 5-7;

[0028] Step 2: Add potassium sulfide to the above solution, pour it into the stainless steel reaction kettle lining after reaction, put the reaction kettle in an oven, keep the temperature and continue to stir for 15 hours, control the pH value between 6-8, and keep the temperature at 80°C, the stirring speed was kept at 150 rpm;

[0029] Step 3. After the reaction is over, take it out of the oven to cool, then take out the lining of the reaction kettle, separate the product by centrifugation, wash it with distilled water three times and filter it, and finally dry it in an oven at 50°C for 5 hours, and grind it with a mortar Finely get zinc sulfide.

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Abstract

The invention discloses a zinc sulfide preparation method, which comprises: 1, weighing a certain amount of zinc oxide, adding into a grinding machine, grinding into powder, placing an acid solution in a clean beaker, and adding the ground zinc oxide; 2, adding an inorganic compound into the solution, reacting, pouring into a stainless steel reaction kettle lining, putting the reaction kettle into a drying oven, keeping the temperature, continuously stirring for 15 hours, and controlling the pH value to be 6-8; and step 3, after the reaction is finished, taking out the product from the drying oven, cooling, then taking out the lining of the reaction kettle, centrifugally separating out the product, washing with distilled water for three times, filtering, finally drying in the drying oven at 50 DEG C for 5 hours, and porphyrizing with a mortar to obtain the zinc sulfide. According to the preparation method of zinc sulfide, zinc oxide is dissolved by adopting an acidic solution, sodium sulfide is added for reaction, high-purity zinc sulfide is prepared by roasting after filtering, washing and drying, and sodium sulfide or potassium sulfide is used for replacing hydrogen sulfide in the preparation process, so that potential safety hazards in generation are reduced.

Description

technical field [0001] The invention relates to the technical field of zinc sulfide, in particular to a preparation method of zinc sulfide. Background technique [0002] Zinc sulfide is easy to disperse and difficult to agglomerate. It is neutral white and has good optical properties. It is often used as a component of thermosetting plastics, thermoplastics, reinforced fiberglass, flame retardants, artificial rubber and dispersants. It is widely used Used in semiconductors, pigments, photoluminescent devices, solar cells, infrared detectors, optical fiber communications, etc. [0003] In the prior art, the production and preparation process of zinc sulfide is complex. Due to insufficient purification and separation and oxidation during storage, zinc sulfide powder usually contains a small amount of sulfate radicals, and the conversion rate of zinc sulfide is about 50%. Very low, coarse particles and uneven particle size, and because hydrogen sulfide gas is highly toxic, the...

Claims

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Application Information

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IPC IPC(8): C01G9/08
Inventor 林泽鹏林华雄林俊
Owner 广东鑫达新材料科技有限公司