Calcium aluminate cement bonded corundum castable containing calcium carbonate micropowder and preparation method of castable
A technology of calcium aluminate cement and castable, which is applied in the field of refractory materials to achieve the effects of improving thermal shock stability, low price and buffering thermal stress
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Embodiment 1
[0029] A calcium aluminate cement bonded corundum castable containing calcium carbonate micropowder, said castable comprising aggregate and fine powder of platy corundum, activated alumina micropowder, calcium aluminate cement, CaCO 3 Micropowder and water reducing agent, among which, platy corundum aggregate, platy corundum fine powder, activated alumina micropowder, calcium aluminate cement, CaCO 3 The micropowder is 70%, 22%, 7%, 0.5% and 0.5% of the total weight of these five raw materials respectively; the water reducer is 0.2% of the total weight of the above five raw materials.
Embodiment 2
[0031] A calcium aluminate cement bonded corundum castable containing calcium carbonate micropowder, said castable comprising aggregate and fine powder of platy corundum, activated alumina micropowder, calcium aluminate cement, CaCO 3 Micropowder and water reducing agent, among which, platy corundum aggregate, platy corundum fine powder, activated alumina micropowder, calcium aluminate cement, CaCO 3 The micropowder is 70%, 21.5%, 7%, 0.5% and 1.0% of the total weight of these five raw materials respectively; the water reducer is 0.2% of the total weight of the above five raw materials.
Embodiment 3
[0033] A calcium aluminate cement bonded corundum castable containing calcium carbonate micropowder, said castable comprising aggregate and fine powder of platy corundum, activated alumina micropowder, calcium aluminate cement, CaCO 3 Micropowder and water reducing agent, among which, platy corundum aggregate, platy corundum fine powder, activated alumina micropowder, calcium aluminate cement, CaCO 3 The micropowder is 70%, 21%, 7%, 0.5% and 1.5% of the total weight of these five raw materials respectively; the water reducer is 0.2% of the total weight of the above five raw materials.
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