Mining and Ore Dressing

Mining activities are usually associated with the more or less severe destruction of the environment. In open pit mining they are more visible than in underground operations, because large surface areas must be removed. In both cases, the deposition of residues after separation of the ore as tailings from flotation or gravity separation represent another environmental problem. Also, ore dressing creates waste water, which in the case of flotation contains small quantities of chemicals. [Pg.388]

Naturally, it depends on where a mine is located whether it is far away fi om or close to civilian and highly populated areas. Moreover, different countries have diverging environmental regulations. [Pg.388]

The high economic level of the mine will be proven by the following. In contrast to nearly all other western mines, Mittersill was only closed for a short period from 1994 to 1995 despite extremely low world market prices. It should also be noted that the outstanding economy of the Mittersill mine has a double reason low operating costs, and full integration with the conversion plant of the same company which is capable of converting low-grade ore concentrates of approximately 30% WO3. [Pg.388]

Mining started in 1976 as a 100% open pit mine, changing gradually to 100% imderground until 1980. The following important regulations had to be obeyed [Pg.388]

FIGURE 12.1. Entrance to the Mittersill underground mine. By courtesy of Wolfram Bergbau und Huttenges. m.b.H., Austria. [Pg.389]

Great improvements in mining and ore-dressing operations (mechanical concentration). [Pg.246]

TABLE 12.1. Limits Pertaining to Wastewater Leaving the Tailings Pond (Mittersill Mine and Ore Dressing Plant)... [Pg.390]

The control, remediation, and risk analysis of historical and modem tailings of mining, and ore dressing and smelting activities, as weU as the development and validation of environmentally safe materials for sound disposal concepts of domestic and industrial wastes, including radioactive matter. [Pg.573]

Flotation or froth flotation is a physicochemical property-based separation process. It is widely utilised in the area of mineral processing also known as ore dressing and mineral beneftciation for mineral concentration. In addition to the mining and metallurgical industries, flotation also finds appHcations in sewage treatment, water purification, bitumen recovery from tar sands, and coal desulfurization. Nearly one biUion tons of ore are treated by this process aimuaHy in the world. Phosphate rock, precious metals, lead, zinc, copper, molybdenum, and tin-containing ores as well as coal are treated routinely by this process some flotation plants treat 200,000 tons of ore per day (see Mineral recovery and processing). Various aspects of flotation theory and practice have been treated in books and reviews (1 9). [Pg.40]

Ore Mining and Dressing Point Source Category— Aluminum ore subcategory-BPT, BA, and NSPS Yes 40 CFR 440, Subpart B EPA 1982f... [Pg.275]

Ore-dressing studies. 32. Properties of suspension mediums for float-and-sink concentration." U. S. Bur. Mines Rept. Investigations 3469-(R). DeWitt, C. C. [Pg.506]

EPA. 1982d. U.S. Environmental Protection Agency. 1982. Ore mining and dressing point source category effluent limitations guidelines and new source performance standards. Eed Reg 47 54598-545621. Pinal rule. [Pg.361]

Appendix El, Chemical oxidation with chlorine for ore mining and dressing (lead/zinc) industry. [Pg.496]

US EPA, Development Document for Effluent Limitations Guidelines and Standards for the Ore Mining and Dressing Point Source Category, EPA-440/1-78/061-e, US Enviromnental Protection Agency, Washington, DC, 1978. [Pg.505]

Chemical Oxidation (Chlorination) Used in Ore Mining and Dressing Industry (Lead/Zinc Industry)... [Pg.515]

Data source Effluent Guidelines Point source Ore mining and dressing Sxibcategory Lead/zinc mill... [Pg.515]

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