Ministry of Higher and Secondary Special Education of the Republic of Uzbekistan Almalyk branch of Tashkent State Technical University named after Islam Karimov Faculty of Energy and Mechanical Engineering Department of Chemical Technology

Technological Part

• Selective dissolution of zinc concentrate depends on the regime.
• The composition of the concentrate of a single-stage selective dissolution solution is 97% Zn, 98% Cd, 68% Cu,12% Fe, 75-80% as sulfur element, 5-10% sulfate.
• 98,5% Zn of the solution in two stage selective melting.
• Horizontal autoclave with 2-4 chambers in selective melting: diameter 3,2 m, length 15.2 m, geometric volume 130 m3 , working volume 100m3 , consisting of anti-acid brick, steal … and asbestos layer. In each selection is used a trubine torch mixer.
• Chemical cleaning of zinc sulfate.
• The chemical cleaning process is carried out by cementation of zinc solution.