Fujian tantalum and niobium ore mine identification // rhenium content testing

 Fujian tantalum and niobium ore mine identification // rhenium content detection Young workers -18,028,719,370, online QQ: 1448179206 tantalum and niobium ore refers collectively to contain tantalum and niobium minerals. Tantalum and niobium ore floatability of minerals containing tantalum, niobium and tantalum iron pyrochlore. Tantalum and niobium ore containing tantalum many called tantalite, niobium and more called columbite. Tantalum and niobium ore and pyrochlore available cationic collector collectors can also be used anionic collector. With complex collector (eg hydroxamic sodium) flotation better. When using oleic acid as collector, the PH value 6-8, tantalum and niobium ore planktonic best in acidic media and columbite tantalite are suppressed, and quartz, feldspar and dolomite in any planktonic not good under the PH value. Therefore, PH = 6 ~ 8, the use of oleic acid as collector, such as tantalum and niobium is easy to quartz gangue mineral separation. Rhenium ore \ rhenium: density 21.04 g / cm 3, melting point 3180 ℃, boiling point of 5627 ℃. Dense hexagonal lattice type. The same appearance and platinum, pure rhenium soft, have good mechanical properties. Dissolved in dilute nitric acid or hydrogen peroxide solution. Insoluble in hydrochloric acid and hydrofluoric acid. Mainly used as a catalyst in the petroleum industry, rhenium with high electron emission performance, widely used in radio, television and vacuum technology. Rhenium has a very high melting point, is a major instrument of high temperature materials; at the same time containing rhenium alloy used in the manufacture of aero-engine components heat, about 80% of the global production of aviation engines for rhenium. High-purity rhenium powder rhenium and rhenium alloys can be made tube components and ultra-high temperature heater to vaporize the metal. Rhenium metal and its alloys can be prepared tap nib and high temperature thermocouple; as a catalyst in the dehydrogenation of alcohols, ammonia and other chemicals; and rhenium alloys can be heat; because of rhenium accordingly instead Fe2 + and Fe3 +, and thus the formation of some minerals Asia species is magmatic magnetite iron ore deposits, contact metasomatic - mainly hydrothermal iron mineral deposits, sedimentary metamorphic iron ore deposits, as well as a series of effects associated with volcanic deposits of iron ore. In addition, it is common in the sand deposits. After the magnetite oxidation becomes hematite (hematite and limonite illusion), but still retains its original crystalline form. Customers are welcome to inquire to know, we have a professional attitude to provide you with the best quality service!