Gold parting in 1860's Australia. It is able to refine gold up to 99.5% purity. The process involves blowing a stream of chlorine gas over and through a crucible filled with molten impure gold. Impurities in the gold form chlorides before the gold does and these insoluble salts are removed from the melt by skimming the surface. Invented by Emil Wohlwill in 1874, this produces the highest purity gold (99.999%). It is an electrolytic process using pure gold for the cathode (or titanium as a starter cathode) and chloroauric acid (gold chloride-hydrochloric acid) as the electrolyte; this is made by dissolving gold
Refine S7 Refine S7 The Refine S7 is a mid-size CUV that was produced by JAC Motors under the Refine sub-brand and positioned above the compact Refine S5. A 1.5L turbo putting out 174hp and 251nm of torque and a 2.0L turbo producing 190hp and 280nm of torque is available, both available with a six-speed manual transmission or a six-speed DCT. The engine lineup of the Refine S7 is exactly the same as the Refine A60 sedan. The Refine S7 is available in both five-seat and seven-seat versions. Pricing of the Refine S7 ranges from 109,800 yuan to 129,800 yuan. A facelift