Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Process for preparing high-strength lightweight aggregate from high-calorific-value coal gangue
The invention relates to the technical field of coal gangue, in particular to a process for preparing high-strength lightweight aggregate from high-calorific-value coal gangue, which comprises a drying link, a pyrolysis link, a decarburization link, a sintering link and a cooling link, and is characterized in that wet coal gangue pellets are sequentially subjected to drying, pyrolysis, decarburization and cooling to obtain water-retaining ceramsite; sequentially drying, pyrolyzing, decarbonizing, sintering and cooling the wet coal gangue pellets to obtain the high-strength ceramsite. High-temperature hot air of the cooling link is introduced into the sintering link, low-temperature hot air of the cooling link is introduced into the decarburization link, and tail gas of each link serves as high-temperature flue gas to be recycled towards the front link, so that the overall energy consumption of a process production line is reduced; in the pyrolysis link, gas separated out of the coal gangue is collected and serves as fuel to be introduced into the sintering kiln, so that the whole production line does not need additional energy input, in addition, the carbon content in the ceramsite is effectively reduced through pyrolysis and decarburization, and the product quality is improved.
本发明涉及煤矸石工艺领域，尤其涉及一种高热值煤矸石制高强轻骨料的工艺，包括烘干环节、热解环节、脱碳环节、烧结环节和冷却环节，其中煤矸石湿料球依次经过烘干、热解、脱碳、冷却得到保水陶粒；煤矸石湿料球依次经过烘干、热解、脱碳、烧结、冷却得到高强陶粒；冷却环节的高温热风通入烧结环节，冷却环节的低温热风通入脱碳环节，并且各个环节的尾气作为高温烟气向前部环节循环利用，降低了工艺产线的整体能耗；热解环节将煤矸石中的析出气体进行收集并作为燃料通入烧结窑，使得整体产线不需要额外的能量输入，另外通过热解和脱碳有效降低了陶粒内的碳含量，从而提高了产品质量。
Process for preparing high-strength lightweight aggregate from high-calorific-value coal gangue
The invention relates to the technical field of coal gangue, in particular to a process for preparing high-strength lightweight aggregate from high-calorific-value coal gangue, which comprises a drying link, a pyrolysis link, a decarburization link, a sintering link and a cooling link, and is characterized in that wet coal gangue pellets are sequentially subjected to drying, pyrolysis, decarburization and cooling to obtain water-retaining ceramsite; sequentially drying, pyrolyzing, decarbonizing, sintering and cooling the wet coal gangue pellets to obtain the high-strength ceramsite. High-temperature hot air of the cooling link is introduced into the sintering link, low-temperature hot air of the cooling link is introduced into the decarburization link, and tail gas of each link serves as high-temperature flue gas to be recycled towards the front link, so that the overall energy consumption of a process production line is reduced; in the pyrolysis link, gas separated out of the coal gangue is collected and serves as fuel to be introduced into the sintering kiln, so that the whole production line does not need additional energy input, in addition, the carbon content in the ceramsite is effectively reduced through pyrolysis and decarburization, and the product quality is improved.
本发明涉及煤矸石工艺领域，尤其涉及一种高热值煤矸石制高强轻骨料的工艺，包括烘干环节、热解环节、脱碳环节、烧结环节和冷却环节，其中煤矸石湿料球依次经过烘干、热解、脱碳、冷却得到保水陶粒；煤矸石湿料球依次经过烘干、热解、脱碳、烧结、冷却得到高强陶粒；冷却环节的高温热风通入烧结环节，冷却环节的低温热风通入脱碳环节，并且各个环节的尾气作为高温烟气向前部环节循环利用，降低了工艺产线的整体能耗；热解环节将煤矸石中的析出气体进行收集并作为燃料通入烧结窑，使得整体产线不需要额外的能量输入，另外通过热解和脱碳有效降低了陶粒内的碳含量，从而提高了产品质量。
Process for preparing high-strength lightweight aggregate from high-calorific-value coal gangue
一种高热值煤矸石制高强轻骨料的工艺
ZHAO XIANGFENG (Autor:in) / MA KAI (Autor:in) / MA LIANTAO (Autor:in) / WANG DONG (Autor:in) / WEN PENG (Autor:in) / LIN LIPING (Autor:in) / WANG XUAN (Autor:in)
24.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Process and system suitable for preparing ceramsite from high-calorific-value coal gangue
| Europäisches Patentamt | 2024
Drying kiln and process system for preparing lightweight aggregate from coal gangue
| Europäisches Patentamt | 2021
Preparation method of low-calorific-value coal gangue unfired high-strength clay antique black brick
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2024