Institute metallurgy noble metal portion, butyl xanthate performed from the factory to a palladium or platinum-containing, palladium-silver precipitated test electrolyte of Pt and Pd, the precipitation rate is generally 99% of the platinum, and the quantitative recovery of palladium . The electrolyte used in industrial test and trial production was expanded to contain palladium 0.0905 g ∕L, platinum 0.0002 g ∕L, silver 110.57 g ∕L, and copper 57.94 g ∕L. The amount of butyl xanthate added was approximately equivalent to the amount of precipitate calculated from the formation of palladium xanthate [(C 4 H 9 OCSS) 2 Pd]. As a result, the precipitation rate of palladium was more than 97%. The obtained palladium xanthate precipitates, and after acid dissolution, it forms a diammine palladium dichloride precipitate, and then the precipitate is dissolved in ammonia water and then directly reduced by adding hydrazine hydrate. The direct yield of palladium during the process was 97%. The purity of the product palladium is 99.98%, containing 0.006% copper and 0.0003% silver. Another plant in the plant used butyl xanthate to precipitate palladium from an electrolyte with a pH of 0.5 to 2.0 (preferably 1.0 to 2.0) and a liquid temperature of 80 to 85 ° C (not lower than 70 ° C) for 1 h. The yields were all greater than 99%, the platinum precipitation rate was 91.7 to 99.9%, and the silver deposition rate was less than 2%. The butyl xanthate excess is 5% to 20%, and the recovery rates of platinum and palladium are more than 99%. When it is increased, the precipitation rate of silver also increases.
Xinxiang SKF Machinery supply whole set of grinding solution, including the Grinding Oil Filter Paper.
Production introduction:
In the grinding oil, there are always mixed with oil slick, impurity, slag, etc. It should be cleaned regularly, or the grinding efficiency and lifespan will be reduced largely and finally influence the equipment grinding efficiency. At the same time, when the grinding oil was covered by the closed oil reservoir, the anaerobion can easily breed, this will result in grinding oil invalid. So to clean the
oil slick, impurity, slag out from the grinding oil is very important, in this way we can not only keep a good grinding oil performance but also expand the grinding oil life largely. At last, reduce the grinding oil cost, improve grinding life and efficiency!
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