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A platform for research: civil engineering, architecture and urbanism
Coal gangue phase change aggregate and preparation method thereof
The invention discloses a coal gangue phase change aggregate and a preparation method thereof. The preparation method comprises the following steps that S1, coal gangue serves as a raw material and is crushed in advance, and the crushed coal gangue is calcined for 2-4 h at the temperature of 600-800 DEG C; S2, after the calcined product is cooled, 50-65% of the calcined product is taken and mixed with 30-40% of paraffin, sealed heat preservation is conducted on the mixture in a negative pressure environment under the condition of T1 temperature for 3-5 hours, then cooling to the temperature of T2 is conducted, and sealed heat preservation for 3-5 hours is continuously conducted; and S3, after heat preservation is finished, a product obtained in the step S2 is taken out, cooled, crushed and then mixed with 5-10% of active admixture at the temperature of T3, so that the surfaces of the coal gangue-paraffin composite particles are wrapped with the active admixture, and the coal gangue phase change aggregate is obtained. The method has the advantages of simple process, utilization of solid waste gangue, low cost, greenness, environmental protection, good temperature control effect, and suitableness for mass concrete.
本发明公开了一种煤矸石相变集料及其制备方法，所述制备方法包括以下步骤：S1：以煤矸石为原料，预先进行破碎，将破碎后的煤矸石在600‑800℃条件下煅烧2‑4h；S2：待煅烧后的产物冷却后取其50‑65％并与30‑40％的石蜡进行混合，将混合物在负压环境下，先在T1温度条件下密封保温3‑5h，然后降温至T2温度条件下继续密封保温3‑5h；S3：保温结束后，将步骤S2得到的产物取出冷却、破碎，然后与5‑10％的活性掺合料在T3温度条件下进行混合，使所述活性掺合料包裹在煤矸石‑石蜡复合颗粒的表面，得到所述煤矸石相变集料。本发明工艺简单，利用固体废弃物煤矸石，成本较低，绿色环保，具有较好的控温效果，可以良好的适用于大体积混凝土。
Coal gangue phase change aggregate and preparation method thereof
The invention discloses a coal gangue phase change aggregate and a preparation method thereof. The preparation method comprises the following steps that S1, coal gangue serves as a raw material and is crushed in advance, and the crushed coal gangue is calcined for 2-4 h at the temperature of 600-800 DEG C; S2, after the calcined product is cooled, 50-65% of the calcined product is taken and mixed with 30-40% of paraffin, sealed heat preservation is conducted on the mixture in a negative pressure environment under the condition of T1 temperature for 3-5 hours, then cooling to the temperature of T2 is conducted, and sealed heat preservation for 3-5 hours is continuously conducted; and S3, after heat preservation is finished, a product obtained in the step S2 is taken out, cooled, crushed and then mixed with 5-10% of active admixture at the temperature of T3, so that the surfaces of the coal gangue-paraffin composite particles are wrapped with the active admixture, and the coal gangue phase change aggregate is obtained. The method has the advantages of simple process, utilization of solid waste gangue, low cost, greenness, environmental protection, good temperature control effect, and suitableness for mass concrete.
本发明公开了一种煤矸石相变集料及其制备方法，所述制备方法包括以下步骤：S1：以煤矸石为原料，预先进行破碎，将破碎后的煤矸石在600‑800℃条件下煅烧2‑4h；S2：待煅烧后的产物冷却后取其50‑65％并与30‑40％的石蜡进行混合，将混合物在负压环境下，先在T1温度条件下密封保温3‑5h，然后降温至T2温度条件下继续密封保温3‑5h；S3：保温结束后，将步骤S2得到的产物取出冷却、破碎，然后与5‑10％的活性掺合料在T3温度条件下进行混合，使所述活性掺合料包裹在煤矸石‑石蜡复合颗粒的表面，得到所述煤矸石相变集料。本发明工艺简单，利用固体废弃物煤矸石，成本较低，绿色环保，具有较好的控温效果，可以良好的适用于大体积混凝土。
Coal gangue phase change aggregate and preparation method thereof
一种煤矸石相变集料及其制备方法
GAO YUXIN (author) / ZHU XIAOLIANG (author) / GUO ZHAOHENG (author) / WANG JUN (author) / YANG WEN (author) / LAI HANG (author) / SONG WENJING (author) / CHENG BAOJUN (author) / MA PENGFEI (author)
2021-04-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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