Filling and consolidating powder for mining purposes and use thereof

• Main Authors: QU BAOJIE, ZHANG DEPING, TIAN HENGZHOU, XU FAXIANG, WANG LIHUA, WANG YUNGE, QIU YANAN
• Format: Patent
• Language: Chinese; English
• Published: 23.01.2013
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; EARTH DRILLING; FIXED CONSTRUCTIONS; LIME, MAGNESIA; METALLURGY; MINING; REFRACTORIES; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SLAG; TREATMENT OF NATURAL STONE

The invention discloses filling and consolidating powder for mining purposes and a use thereof. The filling and consolidating powder comprises the following raw materials in percentage by weight: 3-5% of portland cement clinker, 8-10% of metakaolin, 5-15% of carbide slag, 18-24% of phosphogypsum, 18-22% of fly ash, 9-14% of red mud, 15-19% of blast furnace slag, 4-10% of limestone, 0.8-1.2% of polycarboxylic acid type water reducing agent and 0.4-0.7% of sodium hydroxide and is prepared by uniformly mixing and grinding to get fine powder with 400 meshes-600 meshes. When the filling and consolidating powder is used, mining tailing or coal gangue is firstly mixed with water according to a proportion in a mixing machine for forming uniform slurry, and then the consolidating powder is further added, uniformly mixed and then conveyed to a downhole place by a pipeline for filling. The cost of the filling material blended by the consolidating powder disclosed by the invention is 50-70 yuan/ton, while the cost of the