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A platform for research: civil engineering, architecture and urbanism
Unfired gamma-C2S phosphogypsum lightweight aggregate and preparation method thereof
The invention discloses an unfired gamma-C2S phosphogypsum lightweight aggregate, which is prepared from the following components in percentage by mass: 43 to 68 percent of phosphogypsum, 12 to 28 percent of gamma-C2S, 5 to 10 percent of fly ash, 5 to 10 percent of mineral powder, 3 to 6 percent of red mud powder, 1 to 3 percent of sodium metaaluminate and 5 to 7 percent of water. The preparation method comprises the following steps: firstly, stirring and mixing weighed phosphogypsum, gamma-C2S, mineral powder, fly ash, red mud powder, sodium metaaluminate and water; carrying out step-by-step pressing, crushing, rounding treatment and screening to obtain an aggregate coarse blank; and finally, curing in saturated lime water. The gamma-C2S ardealite lightweight aggregate obtained by the invention has the advantages of lower dead weight and high strength, can realize high-added-value resource utilization of industrial wastes such as ardealite and the like, and has remarkable environmental and economic benefits.
本发明公开了一种免烧型γ‑C2S磷石膏轻集料，各组分及其所占质量百分比包括：磷石膏43‑68％，γ‑C2S 12‑28％，粉煤灰5‑10％，矿粉5‑10％，赤泥粉3‑6％，偏铝酸钠1‑3％，水5‑7％；首先将称取的磷石膏、γ‑C2S、矿粉、粉煤灰、赤泥粉、偏铝酸钠和水搅拌混合；再经分步压制、破碎、磨圆处理，筛分，得集料粗胚；最后置于饱和石灰水中养护制得。本发明所得γ‑C2S磷石膏轻集料的自重较低、强度大，可实现磷石膏等工业废弃物的高附加值资源化利用，具有显著的环境和经济效益。
Unfired gamma-C2S phosphogypsum lightweight aggregate and preparation method thereof
The invention discloses an unfired gamma-C2S phosphogypsum lightweight aggregate, which is prepared from the following components in percentage by mass: 43 to 68 percent of phosphogypsum, 12 to 28 percent of gamma-C2S, 5 to 10 percent of fly ash, 5 to 10 percent of mineral powder, 3 to 6 percent of red mud powder, 1 to 3 percent of sodium metaaluminate and 5 to 7 percent of water. The preparation method comprises the following steps: firstly, stirring and mixing weighed phosphogypsum, gamma-C2S, mineral powder, fly ash, red mud powder, sodium metaaluminate and water; carrying out step-by-step pressing, crushing, rounding treatment and screening to obtain an aggregate coarse blank; and finally, curing in saturated lime water. The gamma-C2S ardealite lightweight aggregate obtained by the invention has the advantages of lower dead weight and high strength, can realize high-added-value resource utilization of industrial wastes such as ardealite and the like, and has remarkable environmental and economic benefits.
本发明公开了一种免烧型γ‑C2S磷石膏轻集料，各组分及其所占质量百分比包括：磷石膏43‑68％，γ‑C2S 12‑28％，粉煤灰5‑10％，矿粉5‑10％，赤泥粉3‑6％，偏铝酸钠1‑3％，水5‑7％；首先将称取的磷石膏、γ‑C2S、矿粉、粉煤灰、赤泥粉、偏铝酸钠和水搅拌混合；再经分步压制、破碎、磨圆处理，筛分，得集料粗胚；最后置于饱和石灰水中养护制得。本发明所得γ‑C2S磷石膏轻集料的自重较低、强度大，可实现磷石膏等工业废弃物的高附加值资源化利用，具有显著的环境和经济效益。
Unfired gamma-C2S phosphogypsum lightweight aggregate and preparation method thereof
一种免烧型γ-C2S磷石膏轻集料及其制备方法
LI JINHUI (author) / MA XUETING (author) / DING QINGJUN (author) / WU JING (author) / YU ZI (author) / DU WEI (author) / ZHOU PENG (author) / HE TUSHENG (author) / XU WEI (author) / LIAO QINGYAO (author)
2023-12-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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