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A platform for research: civil engineering, architecture and urbanism
Dry-mixed mortar produced from high-calcium coal gangue and production method of dry-mixed mortar
The invention belongs to the technical field of solid waste utilization, and particularly relates to a method for producing dry-mixed mortar by using high-calcium coal gangue. The method comprises the following steps: crushing and drying high-calcium coal gangue, controlling the water content of the material to be less than 0.5%, screening, and taking the material with the granularity of 0.1-2.5 mm as grading aggregate; feeding the coal gangue into a rotary kiln for thermal activation, grinding the activated coal gangue until the screen residue of the coal gangue passing through a 325-mesh square hole sieve is less than 8%, taking the coal gangue as an active cementing material, and mixing the graded aggregate, the active cementing material and an additive to obtain the dry-mixed mortar with different strength grades. The treatment method is reasonable in resource utilization, large in product market capacity, large in coal gangue proportion and high in coal gangue adaptability, and the resource utilization rate of the coal gangue can be increased.
本发明属于固体废弃物利用技术领域，具体涉及一种用高钙煤矸石生产干混砂浆的方法。将高钙煤矸石破碎、干燥，控制物料水分含量＜0.5％，再经筛分，取粒度在0.1‑2.5mm的作为级配骨料；其余粒度则送入旋窖进行热活化，活化煤矸石粉磨至过325目方孔筛筛余量＜8％后作为活性胶结材料，将级配骨料和活性胶结材料及外加剂混合后即为不同强度等级的干混砂浆。这种处理方法资源利用合理、产品市场容量大，煤矸石占比大，煤矸石适应性强，有利于提高煤矸石资源化利用率。
Dry-mixed mortar produced from high-calcium coal gangue and production method of dry-mixed mortar
The invention belongs to the technical field of solid waste utilization, and particularly relates to a method for producing dry-mixed mortar by using high-calcium coal gangue. The method comprises the following steps: crushing and drying high-calcium coal gangue, controlling the water content of the material to be less than 0.5%, screening, and taking the material with the granularity of 0.1-2.5 mm as grading aggregate; feeding the coal gangue into a rotary kiln for thermal activation, grinding the activated coal gangue until the screen residue of the coal gangue passing through a 325-mesh square hole sieve is less than 8%, taking the coal gangue as an active cementing material, and mixing the graded aggregate, the active cementing material and an additive to obtain the dry-mixed mortar with different strength grades. The treatment method is reasonable in resource utilization, large in product market capacity, large in coal gangue proportion and high in coal gangue adaptability, and the resource utilization rate of the coal gangue can be increased.
本发明属于固体废弃物利用技术领域，具体涉及一种用高钙煤矸石生产干混砂浆的方法。将高钙煤矸石破碎、干燥，控制物料水分含量＜0.5％，再经筛分，取粒度在0.1‑2.5mm的作为级配骨料；其余粒度则送入旋窖进行热活化，活化煤矸石粉磨至过325目方孔筛筛余量＜8％后作为活性胶结材料，将级配骨料和活性胶结材料及外加剂混合后即为不同强度等级的干混砂浆。这种处理方法资源利用合理、产品市场容量大，煤矸石占比大，煤矸石适应性强，有利于提高煤矸石资源化利用率。
Dry-mixed mortar produced from high-calcium coal gangue and production method of dry-mixed mortar
一种用高钙煤矸石生产的干混砂浆及其生产方法
CHENG FEIHU (author) / XIA JUPEI (author)
2022-11-04
Patent
Electronic Resource
Chinese
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