根深蒂固
发表于 2025-3-21 16:20:43
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ovation
发表于 2025-3-22 00:12:51
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N斯巴达人
发表于 2025-3-22 03:15:53
Conversion of Geological Data into Mining Data for Ore Deposits,has been put on the market. The geological grades will seldom correspond with the grades of the mill head ore. As a rule the ore is diluted by inclusion of wall rock and losses occur during beneficiation. These factors have to be taken into account before revenues can be calculated.
加强防卫
发表于 2025-3-22 06:47:33
Calculation of the Net Smelter Return (NSR) of a Mine,es and ores are available, i. e. iron ore, tungsten, and antimony concentrates or “yellow cake”., U.O., the end product of uranium mines. These quotations are supplied by the price lists of the weekly “Metal Bulletin” or the “Engineering and Mining Journal”. Generally these prices are quoted in “uni
correspondent
发表于 2025-3-22 09:47:32
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optic-nerve
发表于 2025-3-22 16:51:17
Comparison of Deposits,r in production or still in the preproduction stage. The best comparison is an eco nomic one. In the preliminary stage, however, when only order of magnitude para meters are available, other “semi-economic” methods of comparison are also used.
optic-nerve
发表于 2025-3-22 18:23:38
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变形词
发表于 2025-3-22 23:18:29
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NAVEN
发表于 2025-3-23 04:38:05
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多山
发表于 2025-3-23 08:24:22
Brian Klinkenberg,Keith C. Clarkeions are supplied by the price lists of the weekly “Metal Bulletin” or the “Engineering and Mining Journal”. Generally these prices are quoted in “units”, with 1 unit (1 u) being 1% of the metal in the concentrate (see Chap. 1.1.4.6). From this the net smelter return of the mine can easily be derived.