Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing composite cement product from low-quality coal gangue
The invention discloses a method for preparing a composite cement product from low-quality coal gangue, and belongs to the technical field of building material production. The method comprises the following steps: heating normal-temperature coal gangue powder of which the particle size is smaller than a first target particle size to obtain heated coal gangue powder of which the temperature is not lower than a preset temperature, carrying out suspended calcination on the heated coal gangue powder to obtain high-temperature calcined coal gangue powder, and cooling the high-temperature calcined coal gangue powder to obtain a calcined coal gangue raw material; preparing an active exciting agent from light-burned limestone with the decomposition rate of 20-40% and fly ash according to a preset proportion; fully mixing the cement clinker, the desulfurized gypsum, the calcined coal gangue raw material, the limestone powder and the active exciting agent to obtain a mixture; and grinding the mixture to obtain the composite cement product. According to the present invention, the technical effects that the mass ratio of the active material can achieve 35-45%, and the 28d compressive strength of the composite cement product is greater than 48MPa can be achieved for various low-quality coal gangue with the Al2O3 content of only 20-28%.
本申请公开了一种利用低品质煤矸石制备复合水泥产品的方法，属于建筑材料生产技术领域。方法包括：将小于第一目标粒径的常温煤矸石粉料加热得到不低于预设温度的升温煤矸石粉料，将升温煤矸石粉料通过悬浮态煅烧后得到高温煅烧煤矸石粉料，将高温煅烧煤矸石粉料冷却得到煅烧煤矸石原料；将分解率为20％～40％的轻烧石灰石与粉煤灰按照预设比例配制活性激发剂；将水泥熟料、脱硫石膏、煅烧煤矸石原料、石灰石粉料和活性激发剂充分混合得到混合料；将混合料粉磨得到复合水泥产品。本申请能够对Al2O3含量仅为20％～28％的多种低品质煤矸石均取得活性材料质量占比达35％～45％、复合水泥产品28d抗压强度大于48MPa的技术效果。
Method for preparing composite cement product from low-quality coal gangue
The invention discloses a method for preparing a composite cement product from low-quality coal gangue, and belongs to the technical field of building material production. The method comprises the following steps: heating normal-temperature coal gangue powder of which the particle size is smaller than a first target particle size to obtain heated coal gangue powder of which the temperature is not lower than a preset temperature, carrying out suspended calcination on the heated coal gangue powder to obtain high-temperature calcined coal gangue powder, and cooling the high-temperature calcined coal gangue powder to obtain a calcined coal gangue raw material; preparing an active exciting agent from light-burned limestone with the decomposition rate of 20-40% and fly ash according to a preset proportion; fully mixing the cement clinker, the desulfurized gypsum, the calcined coal gangue raw material, the limestone powder and the active exciting agent to obtain a mixture; and grinding the mixture to obtain the composite cement product. According to the present invention, the technical effects that the mass ratio of the active material can achieve 35-45%, and the 28d compressive strength of the composite cement product is greater than 48MPa can be achieved for various low-quality coal gangue with the Al2O3 content of only 20-28%.
本申请公开了一种利用低品质煤矸石制备复合水泥产品的方法，属于建筑材料生产技术领域。方法包括：将小于第一目标粒径的常温煤矸石粉料加热得到不低于预设温度的升温煤矸石粉料，将升温煤矸石粉料通过悬浮态煅烧后得到高温煅烧煤矸石粉料，将高温煅烧煤矸石粉料冷却得到煅烧煤矸石原料；将分解率为20％～40％的轻烧石灰石与粉煤灰按照预设比例配制活性激发剂；将水泥熟料、脱硫石膏、煅烧煤矸石原料、石灰石粉料和活性激发剂充分混合得到混合料；将混合料粉磨得到复合水泥产品。本申请能够对Al2O3含量仅为20％～28％的多种低品质煤矸石均取得活性材料质量占比达35％～45％、复合水泥产品28d抗压强度大于48MPa的技术效果。
Method for preparing composite cement product from low-quality coal gangue
一种利用低品质煤矸石制备复合水泥产品的方法
JIU SHAOWU (Autor:in) / XU GUANGYOU (Autor:in) / CHEN YANXIN (Autor:in) / CHEN YONGBO (Autor:in) / GAO QIANWEN (Autor:in) / ZHAO SIJUN (Autor:in) / ZHANG HONGBO (Autor:in) / ZHENG SHIXIANG (Autor:in)
27.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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