Guangdong Foshan [content] platinum mine detection

 Guangdong Foshan [content] platinum mine detection, Young workers -18,028,719,370, online QQ: 1448179206. Silver, silver and white, it is also called silver. In all metals, conductive silver, the highest thermal conductivity, ductility, and plasticity good, easy to polish and shape, but also an alloy or pseudo-alloy with many metals. Silver also has a strong resistance to corrosion, resistance to acids and bases, and less susceptible to oxidation at ordinary temperature and humidity. There are more than 200 kinds of minerals containing silver, including silver as the main element of silver and silver-containing minerals are more than 60 kinds of minerals, but with significant economic value, as the main raw material for the production of silver have 12 kinds: natural, silver gold silver-hui mine, dark silver, dark silver, Chlorargyrite, crisp silver, silver, antimony, selenium, silver, tellurium, silver, zinc, silver, antimony Fang Hui (sulfur, antimony copper silver. Silver Ion belong copper, thiophilic, polarization capability. In nature often natural silver sulphide, sulfur salts and the like form, because of its ionic radius is large, but also the enormous anionic Se and Te formed selenides and tellurides. platinum mine, Platinum is a chemical element, commonly known as white gold, platinum group elements belonging to its chemical symbol Pt, is one of the precious metal. atomic weight of 195.078, slightly less than the gold of atomic weight, atomic number 78, is a transition metal. Platinum is a transition metal, density, malleable, silvery color, metallic luster, hardness 4-4.5, relative density of 21.45. high melting point of 1773 ℃. Rich ductility can be pulled into a very fine platinum wire, rolled into thin platinum foil. Chemistry nature extremely stable, insoluble in acid and alkali, no oxidation in air. While the king dissolved platinum hydro, but with the state of the relevant platinum dense platinum at room temperature, dissolved in aqua regia very slow, 1 mm diameter platinum wire to be 4-5 hours to completely dissolve. platinum black (Pt powder) can react when heated with concentrated sulfuric acid to produce Pt (SO4) 2, SO2 and water. chloroplatinic acid is prepared by the platinum metal is dissolved in aqua regia. The product of this reaction is H2PtCl6, rather than previously thought platinum compounds containing nitrogen. chloroplatinic acid is a red-brown solid, can be obtained from the evaporation of its solution. Welcome customers to inquire to know, we have a professional attitude to provide you with the best quality The service!