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It's used as a flux. It melts at a significantly lower temperature than aluminum oxide ores, but they will dissolve in molten cryolite. This means less energy is required to extract the aluminum from the ores than if they had to be heated to their melting temperatures.
Wiki User
∙ 12y ago
Wiki User
∙ 8y agoCryolite is used as flux - a material to make easy the dissolution of aluminium oxide before the electrolysis.
Wiki User
∙ 7y agoThe electrolyte, aluminium oxide, has a very high melting point. Dissolving it in molten cryolite can be done at a considerably lower temperature, which saves energy.
Wiki User
∙ 6y agoThe purpose is to lower the melting point and to dissolve bauxite.
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How is the electrolyte of aluminium oxide and cryolite kept molten?
electrical heating :D
Why is pure aluminium oxide mixed with cryolite before electrolysis?
to lower its melting point as the process is very expensive :)
What is the biological use of sodium hydroxide?
The most common use will be as a cleaning agent. NaoH is a strong base and it reacts with a fatty acid to form soap. NaOH is also used in Aluminium production. It is added into the mineral bauxite (a mixture of hydrated Aluminium Oxide (Al2O3) and hydrated Iron Oxide (Fe2O3) and it will be reacting with Aluminium Oxide only to form Sodium Aluminate [NaAl(OH)4], which will be in a solution. After filtration takes place, Iron Oxide and other impurities will be separated with Sodium Aluminate. Al2O3 + 3H2O + 2NaOH --> 2[NaAl(OH)4] After that, Aluminium Oxide will precipitate due to the introduction of the Aluminium Hydroxide and then the precipitates are washed and heated to form pure Aluminium. NaOH is also used in Cryolite (Na3AlF6). NaOH is reacted with Aluminium Oxide to produce another form of Sodium Aluminate (NaAlO2). NaAlO2 is then reacted with Hydrogen Fluoride (HF) to form Cryolite. Al2O3 + 2NaOH = 2NaAlO2 + H2O 6HF + 3NaAlO2 = Na3AlF6 + 2Al(OH)3 Cryolite is a useful material that is used in the production of Potassium Aluminium Sulphate, Sodium Carbonate and Aluminium Sulphate. It also acts as a catalyst in the electrolysis of Aluminium extraction to lower Aluminium's melting point.
Why does an electrolyte contain cryolite?
Molten cryolite is the electrolyte, an ionic compoud..
Why is aluminum an important element?
Aluminium is light and strong. It is used extensively in the manufacture of planes, space shuttles also in the building industry. It is more expensive than steel to manufacture so steel is still used extensively where weight is not a problem.
Which are the sources of the element aluminum?
Aluminium is extracted from bauxite or cryolite.
How is the electrolyte of aluminium oxide and cryolite kept molten?
electrical heating :D
What metal is used to manufacture an areoplane?
Aluminium is a popular lightweight metal used in the manufacture of aircraft.
Why is pure aluminium oxide mixed with cryolite before electrolysis?
to lower its melting point as the process is very expensive :)
What is the biological use of sodium hydroxide?
The most common use will be as a cleaning agent. NaoH is a strong base and it reacts with a fatty acid to form soap. NaOH is also used in Aluminium production. It is added into the mineral bauxite (a mixture of hydrated Aluminium Oxide (Al2O3) and hydrated Iron Oxide (Fe2O3) and it will be reacting with Aluminium Oxide only to form Sodium Aluminate [NaAl(OH)4], which will be in a solution. After filtration takes place, Iron Oxide and other impurities will be separated with Sodium Aluminate. Al2O3 + 3H2O + 2NaOH --> 2[NaAl(OH)4] After that, Aluminium Oxide will precipitate due to the introduction of the Aluminium Hydroxide and then the precipitates are washed and heated to form pure Aluminium. NaOH is also used in Cryolite (Na3AlF6). NaOH is reacted with Aluminium Oxide to produce another form of Sodium Aluminate (NaAlO2). NaAlO2 is then reacted with Hydrogen Fluoride (HF) to form Cryolite. Al2O3 + 2NaOH = 2NaAlO2 + H2O 6HF + 3NaAlO2 = Na3AlF6 + 2Al(OH)3 Cryolite is a useful material that is used in the production of Potassium Aluminium Sulphate, Sodium Carbonate and Aluminium Sulphate. It also acts as a catalyst in the electrolysis of Aluminium extraction to lower Aluminium's melting point.
How do you manufacture aluminium ammonia sulfate?
Corey Hickfordis a sicklad.
What do you manufacture in New Zealand?
Aluminium and agriculture/dairy products.
Why does an electrolyte contain cryolite?
Molten cryolite is the electrolyte, an ionic compoud..
Why is aluminum an important element?
Aluminium is light and strong. It is used extensively in the manufacture of planes, space shuttles also in the building industry. It is more expensive than steel to manufacture so steel is still used extensively where weight is not a problem.
How does a catalyst speed a reaction at low temperatures?
Catalysts will lower the activation energy needed for a certain reaction to happen. For example in the extraction of Aluminium from Bauxite (Aluminium Oxide) The melting point of Al2O3 is about 2000oC. But with the catalyst Cryolite (Na3AlF6), the overall melting point is lowered to about 950oC,
Is aluminium extracted by heating their oxides with carbon?
No, it cannot be extracted this way as aluminium is a much stronger reducing agent than carbon and has greater affinity to oxygen. It is rather extracted by the process of electrolysis by passing electricity through molten aluminum ore which is bauxite mixed with cryolite.
What is the price for cryolite in the market?
what is the price of cryolite per tonne in the market now?as of may 2013.
