Alberta Research Council Incorporated

Superfine Sulphor Inc.

Edward Frank Bertram

James Kenneth Laidler

William Chee Kay

Philip Harris

Darrell W Myroniuk

Rodger Blackwood

A method of producing micron sized sulphur granules involving the following described steps. Firstly, heating sulphur until the sulphur becomes molten. Secondly, tempering water and inducing movement of the water at velocity. Thirdly, injecting an unbroken stream of the molten sulphur under pressure into the heated water moving at velocity. An explosive dispersion of the molten sulphur into fine sulphur granules occurs, enhanced by shear forces exerted by the movement of the heated water at velocity. The described method is capable of producing spherical sulphur granules within a broad range of 70 microns to submicron sizes. In the preferred ranges, spherical sulphur granules of less than 10 microns are be obtained.

Method of producing micron sized sulphur granules

A chlorine source is provided in a reactor in combination with a ground oxidized ore and a particulate carbonaceous reductant. The amount of chlorine provided is significantly less than the stoichiometric requirements for reaction with the total iron content of the ore; the amount of the reductant is greater than that required to effect the reduction of the total iron content of the ore. The reactor is operative to retain the reaction gases in intimate contact with the feedstock mixture without significant dilution of said gases in order to provide a reducing atmosphere. The mixture is indirectly heated to a temperature below 950.degree. C., preferably in the range 700.degree.-950.degree. C., and the mixture is retained in the reactor for a period of time sufficient to cause the major portion of the iron to be transported out of the ore and to be deposited on or near the solid reductant and form discrete metal particles. These particles can be separated from the gangue minerals, for example by magnetic separation, to provide a high yield-high quality iron concentrate.

Beneficiation process for oxidized iron ore

Growing community of inventors

Edmonton, Canada

Edward Frank Bertram