The newly developed procedure incorporates washing of higher alcohols with methanol, drying to remove the methanol, and subsequent ammonia leaching for 100-125 h. The kinetics and influence of temperature (20-70 deg C), concentration of reagent, and ratio m_S:m_L in the range 1:3 - 1:5 on the completeness of the leaching of copper and carbonate-ammonium solutions are compared. Carbonate-ammonia and, in particular, nitrate-ammonia media prove to be the most preferable solutions. These media make it possible to use the resulting solutions (with content up to 80-85 g/l copper) for producing fresh catalyst, The degree of copper recovery is in the range 92-95 percent. Following leaching, the deposit contains NCrO_2, BaO, SiO_2, and a CuO impurity, and following calcination, is suitable for use as a component of welding flux or as an abrasive.
展开▼
机译：新开发的程序包括用甲醇洗涤高级醇，干燥以除去甲醇，然后进行氨浸出100-125小时。比较了动力学（温度（20-70摄氏度），试剂浓度和比例m_S：m_L在1：3-1：5范围内）对铜和碳酸盐-铵溶液浸出完整性的影响。碳酸盐-氨，尤其是硝酸盐-氨介质被证明是最优选的解决方案。这些介质可以将所得溶液（铜含量高达80-85 g / l）用于生产新鲜催化剂。铜的回收率在92-95％的范围内。浸出后，沉积物中含有NCrO_2，BaO，SiO_2和CuO杂质，并且在煅烧之后，适合用作焊剂成分或磨料。
展开▼
