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A platform for research: civil engineering, architecture and urbanism
Ceramsite prepared from high-alumina fly ash and preparation method of ceramsite
The invention discloses ceramsite prepared from high-alumina fly ash and a preparation method of the ceramsite. The technical problem that in the prior art, a method for preparing high-strength ceramsite from fly ash, silicon-calcium slag and red mud does not exist is solved. The ceramsite comprises the following components in percentage by mass: 70-80% of high-alumina fly ash, 5-15% of red mud and 5-15% of calcium silicate slag, wherein the particle size of the selected red mud is less than 150 [mu]m, the particle size of the selected calcium silicate slag is less than 150 [mu]m, and the screen residue of the fly ash with the particle size of 45 [mu]m is less than 45%. The indexes of the ceramsite product prepared by the invention meet the index requirements of 900-grade ceramsite in GBT17431.1-2010 Lightweight Aggregate and Experimental Methods thereof, the strength is greatly improved, the water absorption rate is lower, the ceramsite is simple in manufacturing process, the product strength is high, a large amount of solid waste is used, the production cost is low, no secondary solid waste is generated, and the ceramsite has important significance in relieving the coal ash stockpiling pressure of a power plant, improving the comprehensive utilization of solid wastes, and constructing an environment-friendly society.
本发明公开了一种利用高铝粉煤灰制备的陶粒及其制备方法，解决了现有技术中没有将粉煤灰、硅钙渣和赤泥用于制备高强度陶粒方法的技术问题。它包括按照质量百分数计的70‑80%高铝粉煤灰、5‑15%赤泥和5‑15%硅钙渣，选用的所述赤泥粒度＜150µm，选用的所述硅钙渣粒度＜150µm，所述粉煤灰粒度45µm筛余小于45%。本发明制备的陶粒产品指标满足GBT17431.1‑2010《轻集料及其实验方法》中900级陶粒的指标要求，且强度有较大提高，吸水率较低，陶粒的制作工艺简单、产品强度高、大量使用固体废弃物、生产成本低、且无二次固废产生，对缓解电厂粉煤灰堆存压力，提高固废综合利用，构建环境友好型社会具有重要意义。
Ceramsite prepared from high-alumina fly ash and preparation method of ceramsite
The invention discloses ceramsite prepared from high-alumina fly ash and a preparation method of the ceramsite. The technical problem that in the prior art, a method for preparing high-strength ceramsite from fly ash, silicon-calcium slag and red mud does not exist is solved. The ceramsite comprises the following components in percentage by mass: 70-80% of high-alumina fly ash, 5-15% of red mud and 5-15% of calcium silicate slag, wherein the particle size of the selected red mud is less than 150 [mu]m, the particle size of the selected calcium silicate slag is less than 150 [mu]m, and the screen residue of the fly ash with the particle size of 45 [mu]m is less than 45%. The indexes of the ceramsite product prepared by the invention meet the index requirements of 900-grade ceramsite in GBT17431.1-2010 Lightweight Aggregate and Experimental Methods thereof, the strength is greatly improved, the water absorption rate is lower, the ceramsite is simple in manufacturing process, the product strength is high, a large amount of solid waste is used, the production cost is low, no secondary solid waste is generated, and the ceramsite has important significance in relieving the coal ash stockpiling pressure of a power plant, improving the comprehensive utilization of solid wastes, and constructing an environment-friendly society.
本发明公开了一种利用高铝粉煤灰制备的陶粒及其制备方法，解决了现有技术中没有将粉煤灰、硅钙渣和赤泥用于制备高强度陶粒方法的技术问题。它包括按照质量百分数计的70‑80%高铝粉煤灰、5‑15%赤泥和5‑15%硅钙渣，选用的所述赤泥粒度＜150µm，选用的所述硅钙渣粒度＜150µm，所述粉煤灰粒度45µm筛余小于45%。本发明制备的陶粒产品指标满足GBT17431.1‑2010《轻集料及其实验方法》中900级陶粒的指标要求，且强度有较大提高，吸水率较低，陶粒的制作工艺简单、产品强度高、大量使用固体废弃物、生产成本低、且无二次固废产生，对缓解电厂粉煤灰堆存压力，提高固废综合利用，构建环境友好型社会具有重要意义。
Ceramsite prepared from high-alumina fly ash and preparation method of ceramsite
一种利用高铝粉煤灰制备的陶粒及其制备方法
WANG NA (author) / WANG PEIYI (author) / LI YUNGAI (author) / MIAO RUIPING (author) / LI YONGCHAO (author) / SUN JUNMIN (author)
2021-10-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Method for preparing ceramsite and ceramsite prepared by method
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