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Anonymous users2024-02-111.Metallurgical industry blows high-purity oxygen in the steelmaking process, and oxygen reacts with carbon and phosphorus, sulfur, silicon, etc., which not only reduces the carbon content of steel, but also helps to remove impurities such as phosphorus, sulfur and silicon. In addition, the heat generated during the oxidation process is sufficient to maintain the temperature required for the steelmaking process, so the oxygen blowing not only shortens the smelting time, but also improves the quality of the steel.
When blast furnace ironmaking, increasing the oxygen concentration in the blast can reduce the coke ratio and increase the output. In non-ferrous metal smelting, the use of oxygen enrichment can also shorten the smelting time and increase the output.
2.Chemical industry In the production of ammonia, oxygen is mainly used for the oxidation of feedstock gases, such as high-temperature cracking of heavy oil and gasification of pulverized coal, to strengthen the process and increase fertilizer production.
3.National defense industry Liquid oxygen is the best accelerant for modern rockets, and liquid oxygen is also needed as an oxidizer in supersonic aircraft.
4. Health care: supply respiration: for hypoxia, hypoxia or none.
Oxygen environment, e.g. diving, mountaineering, high-altitude flight, astronautics, medical rescue, etc.
In addition, oxygen has a wide range of uses in metal cutting and welding.
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Anonymous users2024-02-10Supplies breath and supports combustion.
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Anonymous users2024-02-09Classification: Resource Sharing.
Problem description: This is a question in a chemistry book, I don't know how to answer it, students, help! Appreciate.
Analysis: 1. What is the use of oxygen?
Oxygen has a very wide range of uses. It is mainly to supply respiration, support combustion and reaction exothermy
1 Breathing: In general, only air is needed for breathing. but in hypoxia, hypoxia, or none.
Oxygen is often used in oxygen environments, such as diving, mountaineering, high-altitude flight, astronautics, medical rescue, etc.
2 Support combustion: In general, only air is needed for combustion. But in some need high temperatures, fast.
For special requirements such as rapid combustion, such as blast ironmaking, converter steelmaking, etc., oxygen-enriched air or oxygen is required.
Gas. 3. Reaction exothermy: A large amount of heat released during the oxidation reaction, especially the combustion reaction, can be utilized. Example.
Such as coal-fired heating, thermal power generation; Oxygen produced by combustion of acetylene (C2H2) in oxygen is used industrially.
The alkyne flame is used to weld or cut metal, and the oxy-alkyne flame can produce more than 3000 high temperatures.
People also use liquid oxygen to impregnate wood chips, charcoal powder and other porous substances to make liquid oxygen explosives, which are used to open.
Mountain stone drilling, trenching and mining and other open-pit engineering blasting. In addition, oxygen (air) is also used to produce sulfuric acid and nitrate.
Raw materials for chemical products such as acids.
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Anonymous users2024-02-08Oxygen (oxygen), chemical formula quantity: , colorless and odorless gas, the most common elemental form of oxygen. Melting point, boiling point -183 . Not easily soluble in water, about 30ml of oxygen is dissolved in 1L of water. Oxygen accounts for about 21% of the air.
Oxygen is the most widely distributed in nature, covering the mass of the crust, and is the most abundant element.
Uses: 1. Smelting process: In the process of steelmaking, high-purity oxygen is blown, and oxygen reacts with carbon and phosphorus, sulfur, silicon, etc., which not only reduces the carbon content of steel, but also helps to remove impurities such as phosphorus, sulfur and silicon.
2. Chemical industry: In the production of synthetic ammonia, oxygen is mainly used for the oxidation of raw gas, so as to strengthen the process and increase the yield of chemical fertilizer. Another example is the high-temperature cracking of heavy oil and the gasification of pulverized coal.
1. Shampoo and moisturize hair.
When washing your hair with beer, wash and dry your hair first, then wipe 1 8 of the whole bottle of beer evenly on your hair, and do some hand massage to make the beer penetrate the roots of your hair. After 15 minutes, rinse your hair with water and then use a wooden comb or horn comb to smooth your hair. The effective nutrients in beer have a good ** effect on preventing hair from drying out and falling out, and can also make hair shiny. >>>More
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Physical properties of oxygen: one of the main components of air, heavier than air, with a density of grams in grams under standard conditions (0 and atmospheric pressure 101325 Pa). Colorless, odorless, tasteless. >>>More
There are many uses of bricks, such as building a house with bricks, using bricks to pave the ground of the warehouse, and can also be used as ash filling, and bricks have many uses.
Now it seems to be used for washing the face or applying makeup, and it is said that it has a whitening effect, but before using it, it is necessary to soak it in warm water for 2 hours, and then put on the fingers to wash the face and apply makeup, to be honest, I don't think the effect is very good, and it is troublesome, this is my personal opinion.