MUMBAI, India, March 28 -- Intellectual Property India has published a patent application (202517024078 A) filed by Bhp Chile Inc, Santiago, Chile, on March 18, for 'oxidative nitrate heap leaching process.'
Inventor(s) include Chibwana, Clement Chilowa.
The application for the patent was published on March 28, under issue no. 13/2025.
According to the abstract released by the Intellectual Property India: "A method of extracting copper from a sulfide mineral ore including the steps of stacking the ore to form a heap, in a leach step, irrigating the heap with a first irrigation solution containing an acid nitrate solution and nitrite thereby to cause oxidation of sulfide minerals within the heap, oxidising nitric oxide gas released during...