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A platform for research: civil engineering, architecture and urbanism
Preparation method of I-grade fly ash-iron tailing-silicon carbide lightweight aggregate
The invention relates to a preparation method of I-grade fly ash-iron tailing-silicon carbide lightweight aggregate, and belongs to the technical field of building materials, iron tailings and I-grade fly ash are taken as raw materials, silicon carbide is added for mixing and balling, the mixture is heated to 200 DEG C at the heating rate of 10 DEG C/min for pre-sintering, then the mixture is continuously heated to 900 DEG C for roasting, the roasting heat preservation time is 10 min, and the I-grade fly ash-iron tailing-silicon carbide lightweight aggregate is obtained. And continuously heating to 1300 DEG C, calcining for 5 minutes, and naturally cooling to obtain the I-grade fly ash-iron tailing-silicon carbide lightweight aggregate. According to the invention, the temperature rise rate is controlled to be 10 DEG C/min, heat preservation is carried out for 10 min when roasting is carried out to 900 DEG C, heat preservation is carried out for 5 min when roasting is carried out to 1300 DEG C, and natural cooling is carried out to room temperature, so that the obtained lightweight aggregate has good comprehensive performance.
本发明涉及一种Ⅰ级粉煤灰‑铁尾矿‑碳化硅轻骨料的制备方法，属于建筑材料的技术领域，以铁尾矿和Ⅰ级粉煤灰为原料，加入碳化硅混合成球后，以10℃/min的升温速率升温至200℃进行预烧，然后继续升温至900℃进行焙烧，焙烧保温时间10min，然后继续升温至1300℃进行煅烧，煅烧保温时间5min，自然冷却，得到Ⅰ级粉煤灰‑铁尾矿‑碳化硅轻骨料。本发明通过控制升温速率为10℃/min，焙烧至900℃时保温10min，至1300℃并保温5min，自然冷却至室温，得到的轻骨料的综合性能较好。
Preparation method of I-grade fly ash-iron tailing-silicon carbide lightweight aggregate
The invention relates to a preparation method of I-grade fly ash-iron tailing-silicon carbide lightweight aggregate, and belongs to the technical field of building materials, iron tailings and I-grade fly ash are taken as raw materials, silicon carbide is added for mixing and balling, the mixture is heated to 200 DEG C at the heating rate of 10 DEG C/min for pre-sintering, then the mixture is continuously heated to 900 DEG C for roasting, the roasting heat preservation time is 10 min, and the I-grade fly ash-iron tailing-silicon carbide lightweight aggregate is obtained. And continuously heating to 1300 DEG C, calcining for 5 minutes, and naturally cooling to obtain the I-grade fly ash-iron tailing-silicon carbide lightweight aggregate. According to the invention, the temperature rise rate is controlled to be 10 DEG C/min, heat preservation is carried out for 10 min when roasting is carried out to 900 DEG C, heat preservation is carried out for 5 min when roasting is carried out to 1300 DEG C, and natural cooling is carried out to room temperature, so that the obtained lightweight aggregate has good comprehensive performance.
本发明涉及一种Ⅰ级粉煤灰‑铁尾矿‑碳化硅轻骨料的制备方法，属于建筑材料的技术领域，以铁尾矿和Ⅰ级粉煤灰为原料，加入碳化硅混合成球后，以10℃/min的升温速率升温至200℃进行预烧，然后继续升温至900℃进行焙烧，焙烧保温时间10min，然后继续升温至1300℃进行煅烧，煅烧保温时间5min，自然冷却，得到Ⅰ级粉煤灰‑铁尾矿‑碳化硅轻骨料。本发明通过控制升温速率为10℃/min，焙烧至900℃时保温10min，至1300℃并保温5min，自然冷却至室温，得到的轻骨料的综合性能较好。
Preparation method of I-grade fly ash-iron tailing-silicon carbide lightweight aggregate
Ⅰ级粉煤灰-铁尾矿-碳化硅轻骨料的制备方法
ZHENG NING (author) / WU BO (author) / LI KEYAN (author) / NIU HAN (author) / ZHANG WEI (author) / LI ZHIXUE (author) / HAO ZHUOJUN (author) / SHEN PEIPEI (author) / JIANG ZHAOWEI (author) / JIANG BO (author)
2024-06-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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