MANUFACTURING PROCESS OF CALCINED CLAYS IN A ROTARY KILN WITH COLOR CONTROL
A method for manufacturing calcined clays comprising extracting and mixing raw clays; dosing a reducing agent to the mixed raw clays and homogenizing the resulting mixture; reducing the particle size of the mixture to less than 10 mm; heating the mixture in a flash dryer or flash calciner until the...
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Main Authors | , , , |
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Format | Patent |
Language | English |
Published |
25.01.2024
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Subjects | |
Online Access | Get full text |
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Summary: | A method for manufacturing calcined clays comprising extracting and mixing raw clays; dosing a reducing agent to the mixed raw clays and homogenizing the resulting mixture; reducing the particle size of the mixture to less than 10 mm; heating the mixture in a flash dryer or flash calciner until the mixture has between 0% and 5% moisture; calcining the dried mixture from 600 to 900° C., maintaining an oxygen concentration between 1 and 5%; and cooling the calcined clay from 900° C. to 120° C., and uses of such calcined clay resulting from the claimed method in cement and/or a cementitious material for preparing concrete. |
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Bibliography: | Application Number: US202318357132 |