The exhaust gas hazards of burning aluminum ore, and the gas produced by melting aluminum is harmful

The recycling of scrap aluminum in China mainly uses fire smelting, and the process that produces waste gas and may have an impact on the environment is mainly the smelting process. In the smelting process, the main fuels used are coal, coke, heavy oil, diesel, gas, natural gas, etc., after the fuel is burned, the exhaust gas produced contains a large amount of soot and oxides containing sulfur, carbon, phosphorus and nitrogen and other gases; After the charge (aluminum scrap) is heated, the oil stain and the combustibles included in the waste will burn, and a large amount of oxides containing sulfur, carbon and nitrogen will also be generated; In the smelting process, in order to reduce the burning loss, improve the first rate of aluminum and ensure the quality of aluminum alloy, a certain amount of covering agent, refining agent and degassing agent should be added, these additives react with various impurities in the aluminum melt to produce a large amount of exhaust gas and smoke, which contain various metal oxides and non-metallic oxides, and may also contain harmful substances, which may pollute the environment.

The exhaust gas of burning aluminum ore contains a large number of harmful substances, which are potentially harmful to the environment and human health.

First of all, the exhaust gas produced by the combustion of aluminum ore contains pollutants such as sulfur dioxide, nitrogen oxides, and particulate matter, which can affect air quality and lead to environmental problems such as acid rain and photochemical smog.

Secondly, aluminum ore contains harmful substances such as aluminum and fluorine, which will be released during the combustion process, which will have an impact on the environment and human health. For example, long-term inhalation of aluminum dust can lead to lung fibrosis and lung cancer; Long-term intake of fluoride may lead to diseases such as osteoporosis and dental lesions.

Therefore, the exhaust gas treatment of burnt aluminum ore is very important. Common treatment methods include wet desulfurization, dry desulfurization, activated carbon adsorption and other technologies to reduce harmful gas emissions and protect the environment and human health. At the same time, for enterprises that burn aluminum ore, a series of control measures need to be taken, including monitoring and adjusting parameters such as temperature and oxygen concentration during the combustion process to ensure that exhaust emissions meet environmental standards.

Melting aluminum pollutes the air very much, especially the smelting of scrap aluminum in small aluminum smelting plants, because there are no environmental protection measures, and the air pollution is extremely large.

When melting aluminum or aluminum scrap, many substances in aluminum scrap or aluminum become gaseous because of high temperature (the melting point of aluminum is 2467). This kind of substance is mainly waste plastics, cloth, chemical fibers, and rubber. In the exhaust gas produced, there is no shortage of sulfide (sulfur dioxide.

Toxic and harmful substances such as benzene.

These substances form acid mist and acid rain.

Outside the Weihai environment, (benzide) will also kill algae from it.

to all living things of man.

Air pollution has a great impact on the climate, and the pollutants emitted by air pollution will have a certain impact on the local and global climate, especially the impact on the global climate, and from a long-term perspective, this impact will be very serious.

1. The increase in the content of carbon dioxide in the atmosphere: The fuel contains various complex components, which produce various harmful substances after combustion.

Yes, aluminum itself melts to produce toxic gases.

When heated in the air, the aluminium powder burns violently and emits a dazzling white flame. Soluble in dilute sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide and potassium hydroxide solutions, insoluble in water. Relative density. Melting point 660 . Boiling point 2327.

The content of aluminum in the earth's crust is the third most abundant metal element in the earth's crust after oxygen and silicon.

The aluminum itself melts to produce toxic gases.

1. In fact, aluminum is generally not pure, and the substances contained in it may react with oxygen in the air to produce harmful substances.

2. Containers are needed to melt aluminum, and there may be substances that produce toxic gases at high temperatures on the inner wall of the container.

When the aluminum is melted, it only changes from a solid state to a liquid state, and the phase changes, and no new substances are formed, so it does not produce toxic gases, as you can tell from the fact that many people in the aluminum smelter are not wearing masks.

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Is it for the human body or for the environment? Aluminum itself is not very harmful to the human body, but the flux added during smelting or the oil stain of the scrap aluminum itself sticking to the band, or the combustion is not sufficient, and the exhaust gas produced after the reaction is still more harmful to people or the environment. Moreover, the large amount of dust produced by smelting is also seriously harmful to the respiratory tract, and inflammation of the throat, lungs and trachea is common.

What are the dangers of aluminum smelting, and what are the dangers to the human body?