E3S Web Conf.
Volume 352, 20227th International Conference on Energy Science and Applied Technology (ESAT 2022)
|Number of page(s)||4|
|Section||Fossil Energy & Geological Engineering|
|Published online||27 June 2022|
Study on the proportion of coal gasification slag paste filling material
College of Energy and Mining Engineering, Shandong University of Science and Technology China
Aiming at the utilization of coal gasification slag, it is proposed to prepare coal gasification slag as mine filling material. The optimum ratio of cement: coal gasification slag: gangue is 1:5:1, the mass fraction is 70%, and the dosage of quicklime is 4%. The strength of backfill reaches 4.23mpa, which can meet the requirements of mine backfill strength.
© The Authors, published by EDP Sciences, 2022
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