Process and apparatus for manufacture of calcined compounds for the production of calcined products
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United States of America Patent
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Nov 10, 2020
Grant Date -
Nov 9, 2017
app pub date -
Nov 11, 2015
filing date -
Nov 18, 2014
priority date (Note) -
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Abstract
A process for producing a highly calcined and uniformly calcined product from a feedstock. The process comprising the steps of grinding the feedstock to powder, preheating the powder, and calcining the powder in a reactor plant that comprises a number of reactor segments in which a flash calciner is used in each progressive reactor segment to incrementally react the powder by raising the temperature in each segment. The last segment may be a high-temperature reactor that has a controlled residence time and temperature that may allow controlled finishing of the calcination process to achieve a desired degree of calcination and sintering of the product; and cooling of the product.
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