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Mineral llmenite Platinum Group Zircon Chromite Cassiterite Gold Monazite Table 1. Main Applications Metal Titanium Zirconium Chromium Ttn Gold Thorium of Some Placer Minerals Applications Aerospace industry, high strength and corrosion resistence, oxide form used in pigments High temperature applications, catalyst, jewelry, dental alloy Refractories, ceramics, abrasives, chemicals increases hardness and toughness of steel, electroplating, refractory pigments, chemicals Plating, bearing metals, bronze, solders Jewelry, currency, electronics, dentistry, plating Radioactive metal Mineral Percent Vaiuable Density Gold Au Platinum pt Monazite 9 Th Chro mite 46.2 Cr Iimenite 31.6 Ti Rutile 60.0 Tt Cassiterite 78.8 Sn Zircon 67.2 ZrO Diamond Scheelite 63.9 W Magnetite 72.4 Fe 'compiled from Weiss 985! Relative Mhos! 15.6 - 19.3 17.0 4.9 - 5.3 4.3 - 4.6 4.5 - 5,0 4.2 6.8 - 7.1 4.2 - 4.7 3,5 5.9 - 6,1 5.2 - 5.6 Magnetic Electric C C Table 2. Characteristic Properties of Valuable Placer Minerals O Hardness Property Property 2.8 NM 4.5 NM 5.0 - 5.5 M 5.5 WM 5.0- 6,0 M M-Magnetic;WM-Weakly Magnetic;NM-Non Magnetic;C-Conductor;NC-Non Conductor System Excavation monitor monitor shovel shovel dredge mining IHC Holland 983! Transport hydr. lift gravel pump belt. conv. dump truck integrated man hour Table 3. Parameters of Different Mining/Processing Systems' m' Ore 15 13 Mineral Treatment sluice box conv. jig plant do. do. IHC jig plant m Water m' Ore 30 14 68 8 m' Ore ThevolumaendgradoefthedeposdietteynintheesproductcioanpacoitfytheoperatioMna.cdona9l8d3! estimateda deposvitolumeof10millionm for a small-scaoleperationandatleast120millionm for a large 15 6.0 6.0 - 6.5 NM - 7.0 NM 7.5 WM 10.0 NM 4,5 - 5.0 NM 5.5 M NC C NC C 82 8 20 1 1,3 1,2 1,1PDF Image | Dredging Applications of High Density Polyethylene Pipe
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