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A platform for research: civil engineering, architecture and urbanism
Iron tailing sintered brick and preparation method thereof
The invention discloses an iron tailing sintered brick and a preparation method thereof. The sintered brick is prepared from the following raw materials in percentage by mass: 80-95% of iron tailingsand 5-20% of fly ash, and is prepared by the following steps: carrying out compression molding on the iron tailings and the fly ash under 20 MPa, standing for 10-24 hours under ventilated and rainproof conditions, drying a green body by using flue gas waste heat, controlling the temperature to rise to 200 DEG C within 6 hours, and continuously heating to 900-1050 DEG C at the speed of 10 DEG C/min, keeping the temperature for 2-4 hours, and cooling along with the furnace to obtain the sintered brick. The sintered brick has the compressive strength of 23-46 MPa, the volume density of 1854-1980kg/m < 3 >, the mass loss of 7.0-8.0%, the sintering shrinkage of 1.1-4.6% and the water absorption of 11.7-16.4%; the sintered brick provided by the invention is simple in preparation method and easyfor industrialized production, and can be used as a building material.
本发明公开了一种铁尾矿烧结砖及其制备方法，该烧结砖按照铁尾矿：粉煤灰=（80~95）：（5~20）的质量百分比制备获得，以铁尾矿和粉煤灰为原材料，在20MPa下压制成型，置于通风防雨条件下放置10~24小时，然后利用烟气余热干燥胚体，控制6小时升温至200℃后，再以10℃/min继续升至900‑1050℃，保温2~4小时后随炉冷却得到烧结砖。该烧结砖抗压强度23‑46MPa，体积密度为1854‑1980kg/m3，质量损失为7.0~8.0%，烧结收缩1.1~4.6%，吸水率11.7~16.4%；本发明中的烧结砖制备方法简单，易于工厂化生产，可作建筑材料使用。
Iron tailing sintered brick and preparation method thereof
The invention discloses an iron tailing sintered brick and a preparation method thereof. The sintered brick is prepared from the following raw materials in percentage by mass: 80-95% of iron tailingsand 5-20% of fly ash, and is prepared by the following steps: carrying out compression molding on the iron tailings and the fly ash under 20 MPa, standing for 10-24 hours under ventilated and rainproof conditions, drying a green body by using flue gas waste heat, controlling the temperature to rise to 200 DEG C within 6 hours, and continuously heating to 900-1050 DEG C at the speed of 10 DEG C/min, keeping the temperature for 2-4 hours, and cooling along with the furnace to obtain the sintered brick. The sintered brick has the compressive strength of 23-46 MPa, the volume density of 1854-1980kg/m < 3 >, the mass loss of 7.0-8.0%, the sintering shrinkage of 1.1-4.6% and the water absorption of 11.7-16.4%; the sintered brick provided by the invention is simple in preparation method and easyfor industrialized production, and can be used as a building material.
本发明公开了一种铁尾矿烧结砖及其制备方法，该烧结砖按照铁尾矿：粉煤灰=（80~95）：（5~20）的质量百分比制备获得，以铁尾矿和粉煤灰为原材料，在20MPa下压制成型，置于通风防雨条件下放置10~24小时，然后利用烟气余热干燥胚体，控制6小时升温至200℃后，再以10℃/min继续升至900‑1050℃，保温2~4小时后随炉冷却得到烧结砖。该烧结砖抗压强度23‑46MPa，体积密度为1854‑1980kg/m3，质量损失为7.0~8.0%，烧结收缩1.1~4.6%，吸水率11.7~16.4%；本发明中的烧结砖制备方法简单，易于工厂化生产，可作建筑材料使用。
Iron tailing sintered brick and preparation method thereof
一种铁尾矿烧结砖及其制备方法
CUI CHONG (author) / WANG DONGYUN (author) / CUI XIAOYU (author) / WANG PENGTAO (author) / LI TIANJUN (author)
2021-02-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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