Mineralprocessingvalves(SchuF阀门在有色冶炼上应用).pdfVIP

Severe Service Valves for Mineral Ore Processing SchuF Valve Range for Mineral Ore Processing 1. Copper and Nickel • Valves used in the High Pressure Acid Leach (HPAL - 250° C, 5400 kPa) process for pressure let down, feed and draining • Range of valves required in a mild pressure leaching process (Activox - p80 5-15 micron, 100-110 °C, 1000 kPa oxygen), including pressure let down, vent and isolation 2. Bauxite to Alumina • Complete range of valves specifically designed for the industry • Over 5000 valves delivered in 2007 and 2008 • The valves show a good balance between cost and functionality • Lower maintenance 3. Tungsten Carbide • Example of a flush bottom outlet valve used in a severe service mineral process 4. Gold • Drain and let down valves for gold pressure oxidation processes Oxidative Leaching Processes Process Name Developed by Temp. Particle size Pressureeeeeeeeeeeeeeeee Used for Total pressure oxidation Placer Dome 225°C n/a 3400 kPa Copper, Nickel CSEL Cominco 150°C 40 microns 1100 kPa Copper, Gold Dynatec Dynatec 150°C 30-40 microns Nickel AAC/UBC Anglo American 150°C 10-20 microns 700 kPa Zinc, Copper Activox Western Minerals 100-110°C 10-15 microns 1000 kPa Copper, Nickel Albion Mount Isa Mines 85-90°C 5-15 microns Copper NSC (Nitrogen Species Catalyised) Sunshine 125°C 400 kPa Amonia Leach Processes Arbiter, Coloso 85°