Phosphogypsum-based aggregate and preparation method thereof
The invention discloses phosphogypsum-based aggregate and a preparation method thereof, and belongs to the technical field of road building materials. The phosphogypsum-based aggregate is prepared by mixing and balling powder A and a solution B; the powder A comprises 50%-80% of phosphogypsum, 15%-4...
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Main Authors | , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
07.09.2021
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses phosphogypsum-based aggregate and a preparation method thereof, and belongs to the technical field of road building materials. The phosphogypsum-based aggregate is prepared by mixing and balling powder A and a solution B; the powder A comprises 50%-80% of phosphogypsum, 15%-45% of waste residue powder and 3%-6% of an alkaline activator; and the solution B comprises 1%-2% of sodium hexametaphosphate, 0.1%-0.2% of cellulose ether and the balance being water. The preparation method comprises the steps: 1) mixing phosphogypsum, slag powder and the alkaline activator to obtain the powder A; 2) adding sodium hexametaphosphate and cellulose ether in water, and dissolving to obtain the solution B; (3) putting the powder A prepared in the step (1) into a ball forming mill, continuously spraying the solution B into the ball forming mill, mixing the solution B with the powder A, and carrying out ball forming to obtain aggregate; and 4) curing the aggregate, soaking in water, and curing to obtain |
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Bibliography: | Application Number: CN202110700662 |