Linux kernel newbies em português

Zenith Mining Company adopts the stage-wet grinding magnetic separation process, it uses two to one grinding process with two one-stage ball mill against one one-stage ball mill. Grinding and wet magnetic separating the crude concentrate of 25% grade, finally we can get 66.00% grade iron ore concentrate. The cost is lower than 200 yuan per tonne. Beijing Science and Technology University is performing a process test of a certain ultra-poor magnetite. It is found that the crude ores can discard 75.66% qualified gangue after the wet pre-selection.