Inventor
HIETALA KARI
FI4 patents
Patents
4 patentsUS9777345B2Oct 3, 2017
Method and apparatus for acid granulation of matte
OUTOTEC FINLAND OY0 citations37
US10221493B2Mar 5, 2019
Method for recovery of copper and zinc
OUTOTEC FINLAND OY0 citations35
US10060007B2Aug 28, 2018
Method of preparing a gold-containing solution and process arrangement for recovering gold and silver
OUTOTEC FINLAND OY0 citations35
US10023936B2Jul 17, 2018
Method of recovering copper and precious metals
OUTOTEC FINLAND OY0 citations30