Bromine Compounds Limited

Tenova Advanced Technologies Ltd

Elizabeta Shandalov

Mira Bergstein Freiberg

Sharon Krumbein Rubin

Keren Larmour-Ship

Mohamad Masarwa

Tal Fabian

Alan Miller

David Cohen

The invention relates to a wellbore fluid, which is a monovalent brine comprising one or more alkali bromide salt(s) and one or more TCT-reducing additive(s) selected from the group consisting of alkali nitrates. A method of treating a subterranean formation, comprising placing the wellbore fluids of the invention in a wellbore in the subterranean formation is also provided.

Monovalent brines for use as wellbore fluids

A process for recovering gold from a gold-containing raw material, comprising leaching the gold-containing material with an aqueous solution comprising elemental bromine and bromide source to form a pregnant leach solution with the gold dissolved therein; separating said pregnant leach solution from the gold-depleted raw material, removing elemental bromine from said pregnant leach solution, extracting the gold from the pregnant leach solution in an acidic environment into an organic extractant, to form a gold-loaded extract and bromide-containing raffinate, stripping the extract with an alkaline aqueous solution to form a gold-bearing aqueous solution, generating gold (Au) and treating bromide-containing stream(s) to produce recyclable elemental bromine.

Process for recovering gold from ores

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Omer, Israel

Elizabeta Shandalov