Feldspar production from dimension stone tailings for
1/1/2019#0183;#32;After 15 min of milling and a magnetic separation with a 12 kG field the iron content (expressed as Fe 2 O 3) was reduced from to % and the feldspar content increased from to % with % of mass recovery and % of metallurgical recovery, being this concentrate suitable to be used as ceramic raw material.