sodium aluminate वाक्य
उदाहरण वाक्य
मोबाइल
- The left-over or'spent'sodium aluminate solution is then recycled.
- The alumina is converted in sodium aluminate.
- Before storage, the catalyst can be washed with distilled water at ambient temperature to remove remaining sodium aluminate.
- Sodium beta alumina is a non-stoichiometric sodium aluminate known for its rapid transport of Na + ions.
- In the second stage sodium hydroxide solution is added, which dissolves the sodium aluminate, leaving the impurities as a solid residue.
- An improved process using a combination of aluminium chloride and sodium aluminate with sodium acetate prepared " in situ " has been patented:
- It is one of a number of aluminium acetates and can be prepared in a reaction of sodium aluminate ( NaAlO 2 ) with acetic acid.
- Theoretically all of the aluminium / acetate / hydroxide salts can be prepared from aluminium hydroxide or sodium aluminate and acetic acid, but formation of the triacetate only occurs in the absence of water.
- Usually, bauxite ore is heated in a pressure vessel along with a sodium hydroxide solution at a temperature of 150 to 200 �C . At these temperatures, the aluminium is dissolved as sodium aluminate ( the Bayer process ).
- The major other uses of aluminium hydroxide is as a feedstock for the manufacture of other aluminium compounds : specialty calcined aluminas, aluminium sulfate, polyaluminium chloride, aluminium chloride, zeolites, sodium aluminate, activated alumina, aluminium nitrate.
- On occasions, lime ( CaO ) is also introduced into the Bayer process because it enhances the extraction of alumina, controls liquor impurities, assists with the removal of impurities from the sodium aluminate solution, and minimizes soda losses in the red mud.
- Some of the aluminium hydroxide produced is used in the manufacture of water treatment chemicals such as aluminium sulfate, PAC ( Poly aluminium chloride ) or sodium aluminate; a significant amount is also used as a filler in rubber and plastics as a fire retardant.
- A few years earlier, Henri �tienne Sainte-Claire Deville in France developed a method for making alumina by heating bauxite in sodium carbonate, Na 2 CO 3, at 1200 �C, leaching the sodium aluminate formed with water, then precipitating aluminium hydroxide by carbon dioxide, CO 2, which was then filtered and dried.
- The company began with two salt wells in 1850, and continued operations until 1959 . By 1876, the company, which owned the cryolite deposits of Greenland, brought the crude mineral to its works in Natrona, where the mineral was pulverized, sifted, heated, reacted with calcium carbonate and leached to produce pure carbonate of soda ( sodium carbonate ) and aluminate of soda ( sodium aluminate ).
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