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Pozzolanicity of Calcined Clay

2015
Out of the three major clay mineral groups, viz, kaolin, smectite and palygorskite – attapulgite, the cement science primarily focuses on the first group to be used on calcination as a pozzolanic admixture. The general understanding is that the dehydroxylation of dehydrated kaolinite in the temperature range of 550 – 650 °C apparently yields an x-ray ...
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Refractories for Lime Calcination

2020
Lime is an important raw material for manufacturing of many industrial chemicals. This chapter has dealt with the process of calcination of limestone to produce quick or slaked lime. Different types of the kilns with different designs used for lime calcinations are discussed. The temperature profiles in the different types of kilns are shown.
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Pressure Calcination Revisited

2011
Twenty-five years ago at the TMS 100th anniversary meeting of the Hall-Heroult Process, two Alcoa scientists, S. W. Sucech and the co-author of this paper, C. Misra presented a paper on an improvement to the alumina calcination process — pressure calcination.
C. Misra, F. S. Williams
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Cyclic Calcination and Recarbonation of Calcined Dolomite

Industrial & Engineering Chemistry Process Design and Development, 1977
Arthur M. Squires   +3 more
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Pozzolanic properties of flash-calcined kaolinite: A comparative study with soak-calcined products

Cement and Concrete Research, 1995
Flash-calcination enables the dehydroxylation of powdered kaolinite clay within several tenths of a second, when traditional soak-calcinations require minutes at least. The pozzolanic properties of the metakolin produced from two different kaolinites, using two different flash calciners, are shown to increase with the dehydroxylation rate, and rapidly ...
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Rotary Tube Calciners

1997
Rotary tube calciners using metallic or oxide ceramic tubes are well suited for a number of operations in which processing temperatures are typically below 1923K (1650°C). These include applications such as the removal of chemically bound water from precursor oxides (e.g.
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