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Method for preparing cemented filling material by using desulfurized gypsum to excite coal gasification slag
The invention relates to the field of mineral engineering, and discloses a method for preparing a cemented filling material by using desulfurized gypsum to excite coal gasification slag, which comprises the following steps: on the basis of sorting and cleaning the coal gasification slag to remove impurities and airing, carrying out ball milling to obtain coal gasification slag ultrafine powder for preparing the filling material; the preparation method comprises the following steps: crushing and screening coal gangue by using a crusher to obtain coarse aggregate, medium aggregate and fine aggregate for preparing the filling material, and uniformly mixing cement, coal gasification slag superfine powder, coal gangue aggregate, an exciting agent and water to prepare the cemented filling material. The desulfurized gypsum excites the volcanic ash activity of the coal gasification slag, partially replaces cement to serve as a cementing material, and then is mixed with the coal gangue to prepare the cemented filling material. The problem that the volcanic ash activity of the coal gasification slag is low can be solved, and the problems of shortage of cemented filling materials and high filling cost in the cemented filling mining process are effectively solved.
本发明涉及矿业工程领域，公开了一种利用脱硫石膏激发煤气化渣制备胶结充填材料的方法，本发明在分拣清理煤气化渣去除杂质并晾晒的基础上，通过球磨得到了制备充填材料的煤气化渣超细粉，然后用破碎机对煤矸石进行破碎和筛分，得到了制备充填材料的粗骨料、中骨料和细骨料，最后将水泥、煤气化渣超细粉体、煤矸石骨料、激发剂和水，混合均匀，制备得到胶结充填材料。本发明通过脱硫石膏将煤气化渣火山灰活性激发出来，部分取代水泥充当胶凝材料，然后与煤矸石混合制备成胶结充填材料。本发明不仅可以解决煤气化渣火山灰活性较低的问题，并且有效解决了胶结充填开采过程中胶结充填材料短缺，充填成本高的问题。
Method for preparing cemented filling material by using desulfurized gypsum to excite coal gasification slag
The invention relates to the field of mineral engineering, and discloses a method for preparing a cemented filling material by using desulfurized gypsum to excite coal gasification slag, which comprises the following steps: on the basis of sorting and cleaning the coal gasification slag to remove impurities and airing, carrying out ball milling to obtain coal gasification slag ultrafine powder for preparing the filling material; the preparation method comprises the following steps: crushing and screening coal gangue by using a crusher to obtain coarse aggregate, medium aggregate and fine aggregate for preparing the filling material, and uniformly mixing cement, coal gasification slag superfine powder, coal gangue aggregate, an exciting agent and water to prepare the cemented filling material. The desulfurized gypsum excites the volcanic ash activity of the coal gasification slag, partially replaces cement to serve as a cementing material, and then is mixed with the coal gangue to prepare the cemented filling material. The problem that the volcanic ash activity of the coal gasification slag is low can be solved, and the problems of shortage of cemented filling materials and high filling cost in the cemented filling mining process are effectively solved.
本发明涉及矿业工程领域，公开了一种利用脱硫石膏激发煤气化渣制备胶结充填材料的方法，本发明在分拣清理煤气化渣去除杂质并晾晒的基础上，通过球磨得到了制备充填材料的煤气化渣超细粉，然后用破碎机对煤矸石进行破碎和筛分，得到了制备充填材料的粗骨料、中骨料和细骨料，最后将水泥、煤气化渣超细粉体、煤矸石骨料、激发剂和水，混合均匀，制备得到胶结充填材料。本发明通过脱硫石膏将煤气化渣火山灰活性激发出来，部分取代水泥充当胶凝材料，然后与煤矸石混合制备成胶结充填材料。本发明不仅可以解决煤气化渣火山灰活性较低的问题，并且有效解决了胶结充填开采过程中胶结充填材料短缺，充填成本高的问题。
Method for preparing cemented filling material by using desulfurized gypsum to excite coal gasification slag
一种利用脱硫石膏激发煤气化渣制备胶结充填材料的方法
GUO YUXIA (author) / HU WEIYANG (author) / WU RENJIE (author) / MA JIAHUI (author) / SHI YUNJI (author) / BAI CHENYANG (author)
2023-12-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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