A preliminary accounting of the production and disposal of mill tailings shows that about 56 million metric tons of tailings containing 2,200 metric tons of silver, 800,000 metric tons of lead, and at least 650,000 metric tons of zinc were disposed of or otherwise lost into the Coeur d'Alene River or its tributaries.
The word tailings is sometimes applied to include coarse mine waste. For this website the term tailings refers to the slurry waste output from the processing plant. The properties of tailings are dependent on the ore body being mined, the grinding and processing circuits, the reagent properties and the thickening process prior to disposal.
mill tailings had reached Lake Coeur d'Alene and had impacted as much as 25,000 acres of floodplain along the river. From 1932 to 1946, mine and mill operators dredged more than 15 million metric tons of tailingscontaminated sediments from the river at Cataldo Mission Flats, stockpiling recovered material on the floodplain.
Water is essential in the grinding and processing of mineral ore for the extraction of the contained metal, which means that the waste takes the form of a slurry of water and mineral particles.
dredged sediments, mine tailings and mineral fines, municipal sewage sludge, and a variety of .. flocculants, the low cost of base materials, and the ease with which starch phosphate .. lagoon cleanout goes directly into geotube containers . »More detailed
Jan 25, 2019· Blight and Steffen (1979) note the occurrence of flow slides in South African gold tailings embankments, and Bishop (1973) describes several examples of flow slides in tailings embankments and mine waste piles. This mode of failure certainly violates the rigidbody assumption of limitingequilibrium analysis.
The retreatment, by scavenger flotation, of PGM concentrator tailings has become a recent trend in the industry. Impala commissioned the first plant at its Rustenburg operations in November 2003. Anglo Platinum had also decided to initiate tailings scavenging but through third party, BEE involved companies.
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MINE TAILINGS Mine tailings are defined as the material that is left over after a mineral has been liberated from gangue material. Gangue material is the undesired material and the mineral is the desired material from a runofmine ore. Runofmine ore is the ore directly from the face of an underground or surface operation.
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Project Description. The major Red Dog Mine facilities include the Red Dog Main pit, Aqqaluk pit, mill, tailings storage facility, main waste stockpile, fresh water storage reservoir, water management systems, airstrip and Personnel Accommodations Complex (PAC). Power is supplied by onsite diesel generators.
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