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Method for preparing pozzolanic material from paper residue and method for producing cement from pozzolanic material
Method for preparing pozzolanic material from paper residue and method for producing cement from pozzolanic material
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机译:由纸渣制备火山灰材料的方法和由火山灰材料生产水泥的方法
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摘要
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 DEG C. and a freeboard temperature of no more than 780 DEG 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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