, but
their recovery was merely 60%. Through the first magnetic separation
at 700 Gauss, 83% of the nickel and iron, based on the whole
printed circuit boards, was recovered into the magnetic fraction,
and 92% of the copper was recovered in the non-magnetic fraction.
The grades of the nickel–iron and copper concentrates were 76.5%
and 71.6%, respectively. The cumulative recovery of the nickel–iron
concentrate was increased by the second magnetic separation at
3000 Gauss, but the grade of the concentrate decreased remarkably
from 76% to 56%. In spite of some loss to the magnetic fraction, the
grade of copper increased slightly from 71.6% to 75.4%. Thus,
, buttheir recovery was merely 60%. Through the first magnetic separationat 700 Gauss, 83% of the nickel and iron, based on the wholeprinted circuit boards, was recovered into the magnetic fraction,and 92% of the copper was recovered in the non-magnetic fraction.The grades of the nickel–iron and copper concentrates were 76.5%and 71.6%, respectively. The cumulative recovery of the nickel–ironconcentrate was increased by the second magnetic separation at3000 Gauss, but the grade of the concentrate decreased remarkablyfrom 76% to 56%. In spite of some loss to the magnetic fraction, thegrade of copper increased slightly from 71.6% to 75.4%. Thus,
การแปล กรุณารอสักครู่..
