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China high alumina refractory calcined bauxite for sale with good price
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Al2O3:85% and up
density:3.9-4g/cm3
hardness:1-3
Usage:smelting the aluminium,heat resistant,
ceramic indust
raw bauxite?
1.Introduction
A?general?term?for?a?rock?composed?of?hydrated?aluminum?oxides.?It?is?the?main?ore?of?alumina?to?make?aluminum.?Also?used?in?the?production?of?synthetic?corundum?and?aluminous?refractories.?The?bauxite?is?purified?by?the?Bayer?Process.?
1:description:
calcined?bauxite?is?one?of?the?principal?ore?of?aluminum.?Calcined?bauxite?contains?hydrous?aluminum?oxides?and?aluminum?hydroxides,?formed?through?the?laterization?of?aluminous?rocks?in?tropical?and?subtropical?areas?.calcined?bauxite?is?obtained?by?calcining?(heating)superior?grade?bauxite?at?high?temperature?(from?85OC?to?1600C)?.this?removes?moisture?thereby?increasing?the?alumina?content.?compared?to?an?alumina?content?of?about?57%to?58%in?raw?bauxite,?calcined?bauxite?has?an?alumina?content?of?84% to 88%.the?heating?is?carried?out?in?rotary?kilns.
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2.Application:
calcined?bauxite?is?typically?calssified?according?to?its?intended?commercial?application,such?as?abrasive?,cement?,chemical?l,?metallurgical,?and?refractory?.as?raw?material?for?use?in?high?alumina?and?super?duty?refratory?bricks?and?shapes?,plastics?,castable?refratory,?motors,?gun?mixes,?ramming?mixes,?abrasive?grains?and?other?products?chemical?composition?
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