Methods of manufacturing hydraulic materials

Details Methods of manufacturing hydraulic materials Methods of manufacturing hydraulic materials

1996-04-23

1999-02-09

Marcantoni, Paul

Compositions: coating or plastic

Coating or plastic compositions

Alkali metal silicate containing

106416, 106486, 501144, 501145, 501150, C04B 3304

Patent

active

058688293

ABSTRACT:
A method of making a hydraulic material which contains metakaolinite and calcium hydroxide from a kaolin-containing compound. The method is performed in a fluidized bed installation having a freeboard under conditions such that the amount of calcium oxide formed is minimized. Preferably, the method is performed at a fluidized bed temperature of 780.degree. C. and a freeboard temperature of no more than 780.degree. C. By minimizing the amount of calcium hydroxide formed, the use of an additional installation for converting calcium oxide to calcium hydroxide is avoided. The starting material is typically waste paper and other residues from recycling of waste paper for reuse in the paper industry. The product may be used to form concrete having a high compression strength.

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