Bromine Compounds Limited

Other

Teck Cominco Metals Ltd.

Advance Lithium Projects Ltd.

Baruch Grinbaum

David B Dreisinger

Jonathan Lipp

Yehuda Keren

Juris R Harlamovs

Eli Barnea

Cashman R S Mason

Gideon Harel

Leonid Zaslavsky

Rafael Semiat

Iulio Bitherfeld

Rafael Shemer

Moti Veinberg

Leni Kogan

Samuel Wahrmann

Avi Prager

Cashman R Mason

Provided are continuous methods and processes for removing Li ions from an aqueous feed solution.

Processes for metal ions removal from aqueous solutions

A process for the production of calcium bromide from feed brines, particularly from Dead Sea End Brine (EB), is described. The process comprises extracting the feed brine in countercurrent with a composite organic solvent; optionally, purifying the extract to increase the ratio Br:Cl by contacting it with a part of the product; and washing the purified extract with water to yield the product, that is an aqueous solution of CaBr. The composite solvent comprises an anionic extractant, such as an amine or a mixture of amines; a cationic extractant, such as a carboxylic phosphoric or sulphonic acid or a mixtures of said acids; and diluent/modifier, which is an organic solvent. An apparatus for the production of calcium bromide is also described, which comprises: an extraction battery; optionally, a purification battery; and a washing battery, wherein at least one of the batteries comprises a plurality of stages.

Process for the production of calcium bromide by liquid-liquid extraction

A method of extracting a halide and sulphate from an aqueous sulphate solution, such as a zinc sulphate solution, comprises subjecting the solution to solvent extraction to extract halide and sulphate from the solution and controlling the amount of sulphate extracted by selective adjustment of the acidity of the aqueous solution.

Solvent extraction of a halide from a aqueous sulphate solution

A method for the production of finely particulate solid chemical products from a molten stock comprises the steps of: (a) feeding the product, as molten stock, to an elongated treatment space, sealed from the ambient; (b) causing the product to flow as a flowable mass within space, while leaving a free portion of said space above the surface of said mass; (c) maintaining in said space an atmosphere that is non-reactive with said product; (d) subjecting said product to a stirring and mixing action by rotary means; (e) concurrently cooling said product as it proceeds along said space, whereby to solidify it; (f) concurrently detaching any product that adheres to surfaces within said space; and (g) discharging the solidified product, in the form of solid particles, from said elongated treatment space.

Process for the production of finely granulated solid chemical compounds

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Tivon, Israel

Baruch Grinbaum