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 XING HONGYUAN, XIAO YUE, LIU GANG, GUAN BIN, LIANG YANGSHI, CAO TINGWEI, HUANG AO
Format Patent
LanguageChinese
English
Published 07.09.2021
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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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
Bibliography:Application Number: CN202110700662