Cementing material and preparation method thereof, and sylvite mine tailing filling material and preparation method thereof

• Main Authors: WANG YING, SONG JIA, LIU YAN, ZENG RUIPING, LU ZHIMIN, WANG XUEWEI, DONG XIAOJUAN, LIU ZIMENG, ZHOU JINYAN, GAO ZE, SHA MEIJU, QIN DAJIAN, HAO YONGCHAO, JIA JING, ZHANG YAN, YANG HONGZENG
• Format: Patent
• Language: Chinese; English
• Published: 08.09.2020
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention relates to the technical field of mine filling, and particularly discloses a cementing material and a preparation method thereof, and a sylvite mine tailing filling material and a preparation method thereof. The cementing material is prepared from the following components in parts by mass: 3 to 5 parts of Portland cement clinker, 30 to 40 parts of quick lime, 60 to 70 parts of limestone, 5 to 10 parts of an early strength agent and 2 to 4 parts of an additive. The sylvite mine tailing filling material prepared from the cementing material comprises the following components in parts by mass: 8.5-9.5 parts of the cementing material, 8-9 parts of sylvite mine tailings and 9-10 parts of sylvite mine brine mother liquor. The cementing material can directly replace a Portland cementbinder used in a traditional metal mine backfill filling method, so that the manufacturing cost of the filling material is remarkably reduced. The cementing material is especially suitable for backfilling of a solid sylvite