coppers………………………………………………….. ………………… 101 4.11. Calculation of the rational composition of the copper concoction 103 V. Production of the zinc …………………………………………………… 108 5.1. Raw material and main technologies zinc production ………………. 108 5.2. Process to burn zinc concoction ……..………………………………… 111 5.3. Oxidation of sulfide of the zinc concoction in stove boiling layer ….. 114 5.4. Process dissolution burnt zinc concoction…………………………….. 117 5.4.1. Chemical reactions running in process vels………………………… 117 5.4.2. Dissolution of the burnt zinc concoction by solution sulphate acids 119 5.4.3. Devices solvent …………………………………................................. 121 5.5. Take of zinc from solution sulphate acids by method of the electrolysis …………………………………………………………………... 124 5.6. Conversion zinc coca by method vels process ………………………... 127 5.7. Calculation of the rational composition of the zinc concoction …….. 130 VI. Metallurgy of the nickel and lead ………………..…………………..... 131 6.1. Minerals of the nickel and their characteristic ………………………. 131 6.2. Technological methods of the conversion of oxidized nickel ore ……. 132 6.3. Methods of the conversion sulfide-nickel ore ……………................... 134 6.4. The raw material, ore and chemical composition of the leaden metal. Physico-chemical characteristic and methods of the conversion lead and its join ………..…………………………………………………… 136 VII. Metallurgy gold and silver …………….................................................