ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,135, issued on June 24, was assigned to UMICORE (Brussels).
"Continuous process for the oxidative leaching of nickel" was invented by Bart Klaasen (Olen, Belgium) and Marjon Willekens (Olen, Belgium).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a process for the preparation of a nickel sulphate solution in a column reactor, whereby metal particles containing nickel are reacted with an oxidative leach solution comprising sulphuric acid and hydrogen peroxide in water and whereby the acid in the oxidative leaching solution is substantially depleted."
The patent was filed on March 2, 2023, under Application No. 18/842,09...