Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of coal mine goaf filling paste
The invention provides a preparation method of coal mine goaf filling paste, and relates to the technical field of mining area paste filling, and the preparation method comprises three steps of material and equipment preparation, coal gangue slurry preparation and filling paste preparation. Coal slime water from the bottom of a concentration tank of a coal cleaning plant is introduced to serve as a part of a filling paste material, coal slime in the coal slime water belongs to superfine particles, coal ash belongs to a fine particle size, then the fine particle size particles are used for filling gaps among coarse particles, and the superfine particle size particles are large in specific surface area and have enough water saturation; the coarse particles are distributed among the coarse particles after being combined with the water molecules, so that the stability among the solid particles in the paste filling material is ensured, and the paste filling material has enough plasticity to maintain the three-dimensional structure of the paste filling material when the paste filling material is static, therefore, in the process of preparing the filling paste, under the condition that the strength of the filling paste can be ensured, the filling efficiency is improved. The dosage of the coal gangue and the fly ash is reduced, and the cost of preparing the filling paste is reduced.
本发明提出一种煤矿采空区充填膏体的制备方法，涉及矿区膏体充填技术领域，包括材料及设备的准备、煤矸石浆料的制备和充填膏体的制备三个步骤，本发明采用湿式制备的方式，引入来自洗煤厂浓缩池底的煤泥水作为充填膏体材料的一部分，煤泥水中煤泥属于超细颗粒，而粉煤灰属于细粒径，继而细粒径颗粒是用来填满粗颗粒之间的空隙，而超细粒径颗粒比表面积大，有足够的饱水性，它们与水分子结合后分布于粗颗粒之间，从而保证了膏体充填材料中固体颗粒之间的稳定性，使得膏体充填材料在静止时有足够的塑性保持其三维结构，因此本发明在制备充填膏体的过程中，能够保障充填膏体强度的条件下，降低煤矸石和粉煤灰的用量，降低制备充填膏体的成本。
Preparation method of coal mine goaf filling paste
The invention provides a preparation method of coal mine goaf filling paste, and relates to the technical field of mining area paste filling, and the preparation method comprises three steps of material and equipment preparation, coal gangue slurry preparation and filling paste preparation. Coal slime water from the bottom of a concentration tank of a coal cleaning plant is introduced to serve as a part of a filling paste material, coal slime in the coal slime water belongs to superfine particles, coal ash belongs to a fine particle size, then the fine particle size particles are used for filling gaps among coarse particles, and the superfine particle size particles are large in specific surface area and have enough water saturation; the coarse particles are distributed among the coarse particles after being combined with the water molecules, so that the stability among the solid particles in the paste filling material is ensured, and the paste filling material has enough plasticity to maintain the three-dimensional structure of the paste filling material when the paste filling material is static, therefore, in the process of preparing the filling paste, under the condition that the strength of the filling paste can be ensured, the filling efficiency is improved. The dosage of the coal gangue and the fly ash is reduced, and the cost of preparing the filling paste is reduced.
本发明提出一种煤矿采空区充填膏体的制备方法，涉及矿区膏体充填技术领域，包括材料及设备的准备、煤矸石浆料的制备和充填膏体的制备三个步骤，本发明采用湿式制备的方式，引入来自洗煤厂浓缩池底的煤泥水作为充填膏体材料的一部分，煤泥水中煤泥属于超细颗粒，而粉煤灰属于细粒径，继而细粒径颗粒是用来填满粗颗粒之间的空隙，而超细粒径颗粒比表面积大，有足够的饱水性，它们与水分子结合后分布于粗颗粒之间，从而保证了膏体充填材料中固体颗粒之间的稳定性，使得膏体充填材料在静止时有足够的塑性保持其三维结构，因此本发明在制备充填膏体的过程中，能够保障充填膏体强度的条件下，降低煤矸石和粉煤灰的用量，降低制备充填膏体的成本。
Preparation method of coal mine goaf filling paste
一种煤矿采空区充填膏体的制备方法
CHANG QINGLIANG (Autor:in) / ZHANG BIAO (Autor:in) / WANG YUZHUO (Autor:in) / ZHANG JIANFEI (Autor:in)
31.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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