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Brief introduction and application of aluminum powder

2020-07-25 09:03:22
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Brief introduction and application of aluminum powder


Release time: September 27, 2012


Aluminum powder, commonly known as "silver powder", is a kind of silver metallic pigment, which is made of pure aluminum foil with a small amount of lubricant, rammed and crushed into a scaly powder, and then polished. Aluminum powder is light, with high floating force, strong covering power and good reflection performance to light and heat. After treatment, it can also become non floating aluminum powder. Aluminum powder can be used to identify fingerprints and make fireworks. Aluminum powder is one of the most important metallic pigments because of its wide application, large demand and variety.


Chemical formula: Al aluminum powder


1. Physicochemical properties and uses


No smell. Silver white metal powder, spontaneous combustion temperature: 5900 ℃, lower limit of dust explosion: 40g / m3. It is used to make: paint, ink, pigment and fireworks. It can also be used as an additive for porous concrete. Aluminum is also used as a therapeutic and pharmaceutical product, as well as in the automotive and aircraft industries.


Toxicity


The drug is non-toxic and has the effect of pulmonary fibrosis on respiratory tract. Maximum allowable concentration: 4mg / m3


III. Effects of short-term exposure


Inhalation: high concentration of dust can irritate respiratory tract mucosa. Eye contact: small dust particles generally have no irritation, while large dust particles will have some friction irritation. Oral: in the workplace normal dose into the oral cavity non-toxic reaction. A large number of swallowing dust has friction irritation to the stomach and intestines.


IV. effects of long-term exposure


Long term or repeated exposure can cause pulmonary fibrosis and aluminum pneumoconiosis. Symptoms include cough, shortness of breath, loss of appetite and lethargy. Symptoms similar to asthma have occurred.


V. fire and explosion


This product is flammable, fine powder and air can form flammable and explosive mixture. It can isolate the fire source and let it burn out. Use yellow sand, talc and sodium chloride to put out small fires. Never use water.


6. Chemical reactivity


Do not contact dilute acid or strong base. A large amount of dust will naturally heat when it is damp. The mixture of aluminum powder and other metal oxides will react violently or catch fire. When mixed with halogen elements, fire will occur. Explosive reactions can occur when heated or rubbed with halogenated hydrocarbons.


Seven person protection


Inhalation: if the dust concentration is unknown or exceeds the exposure limit, class I dust mask should be worn. Skin: to prevent excessive dust deposition or friction, use gloves, work clothes, work shoes. Eyes: wear chemical safety glasses.


8. First aid


Inhalation: in case of irritation, open the eyelids, rinse the affected eyes with normal saline or lukewarm slow running water for at least 10 minutes. Skin contact: in case of irritation, gently wipe off or wipe off excess aluminum powder. Oral: do not induce vomiting. Give the patient about 250 ml of water. All patients should be treated by a doctor.


Storage and transportation


Observe the rules for the storage and transportation of flammable substances. Store in a cool, dry and well ventilated place to avoid dust generation. Package number 2, 6.


X. safety and handling


Only trained personnel can do cleaning work. Ensure good ventilation. Use good protective clothing and respirator. Do not touch the scattered objects. Shovel into a clean, dry, labeled container and cover it. Rinse the site with water. Fuel should be kept away from bulk materials and comply with environmental protection regulations.


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