Zinc Oxide Powder is generally referred to as Zinc White, which is commonly known as Zinc Oxide. Zinc oxide powder is an inorganic substance that makes molten zinc evaporate into mist at high temperature and oxidize in preheated air. Excellent light resistance, solvent resistance, heat resistance and oxidation resistance, but poor acid resistance, alkaline resistance and reduction resistance, soluble in acid and alkali. It is used in paint, ink, rubber, medicine and other industries. Next, let's talk about the production methods and treatment and disposal methods of zinc oxide.

I. Production methods of zinc oxide powder.

The main production methods of zinc oxide powder are direct method, indirect method and wet method. The direct and indirect method, also called the dry method, uses zinc ore as raw material directly, calcines it with carbon at high temperature (around 400°C), reduces the zinc salt to zinc vapor, and then oxidizes it with oxygen to synthesize zinc oxide. The product obtained by this method has coarse particles (0.28-0.35 microns), irregular shape and low purity. The indirect method uses zinc metal as raw material, heats it to produce zinc vapor, and then combines it with oxygen to produce zinc oxide. The purity is high, the particles are fine (0.10-0.27 μm) and nearly round. In the wet process, zinc salt (e.g. zinc sulfate) is decomposed with sodium carbonate to obtain zinc carbonate, and then the latter is calcined at 300-400°C to remove carbon dioxide to obtain zinc oxide. The wet product has high purity but no covering power and is generally used in medicine and reagents.

Second, the treatment and disposal methods of zinc oxide powder.

1、Emergency treatment of zinc oxide powder leakage.

Isolate the leaking contaminated area, set up warning signs around it, and suggest emergency management handling staff to wear masks, goggles and work clothes. Carefully sweep up to avoid generating dust and pour to an open place for deep burial. Can also be flushed with a large amount of water, the diluted wash water into the domestic wastewater through the system. If a large amount of data leakage, collect garbage recycling or harmless treatment and then discard.

2、Zinc oxygen powder protection measures.

(1) Respiratory protection, workers are recommended to wear dust masks.

(2)Eye protection, safety mask can be used if necessary.

(3) Protective clothing, wear tight-sleeved work clothes and long rubber shoes.

(4) Hand protection, wear protective gloves.

(5)Smoking and eating are strictly prohibited in other workplaces. After work, shower and change clothes and pay attention to personal hygiene.

3、Zinc oxygen powder first aid measures.

(1) skin contact with zinc oxide powder, with soapy water and water can improve rinsing, seek medical attention.

(2) Eye contact with zinc oxide powder, pull open the eyelids, flush with running water for 15 minutes, seek medical attention.

(3) Inhalation of zinc oxide powder, leave it in fresh air, go to the doctor.

(4) Ingest zinc oxide powder, take milk, soy milk or egg white by mouth, wash stomach, see a doctor.

(5) zinc oxygen powder fire extinguishing methods, non-combustible, sound around the available fire extinguishing media.

Third, zinc oxide powder use.

Zinc oxide powder is used as pigment for paint and rubber filler, used in medicine to make ointment, zinc paste, rubber paste, etc. Suitable for use in the production and processing of feed as a zinc supplement.