Mining Loader,Underground Mining Loader,Loaders For Mining,Wheel Loaders For Minging Taian zhengtai construction machinery Co., Ltd , https://www.taztmachine.com Copper , nickel ore 0.0001~0.0006 Natural sulfur deposit ore 0.001~0.02 Copper zinc ore pyrite 0.001~0.016 Copper-bearing pyrite ore 0.01~0.08 Copper- molybdenum sulfide deposit copper-molybdenum ore 0.03 Copper, Lead zinc ores 0.001 Cobalt ore, telluride - selenide ore 0.001~0.01 Miners of all types of sheet metal deposits are 0.001~0.01
General industrial requirements for niobium elements