10.1016/j.mineng.2013.03.005 | DeepDyve

10.1016/j.mineng.2013.03.005 | DeepDyve

 · When applied to multistage on a tank-by-tank basis, the segregated flow model will not be appropriate if the rate is not indicated by changes in particle sizes. The population balance method is considered more rigorous for the analysis of multistage , but is complex and difficult to apply. [email protected]

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Antti Saarikoski - Senior Product Manager - OUTOTEC ...

Antti Saarikoski - Senior Product Manager - OUTOTEC ...

Research was part of TEKES-programme and the specific task was Computational Fluid Dynamics CFD calculations on Direct . Research program included one- liquid and two-phase gas-liquid flow calculations using FLUENT-software. Chemical models and user-defined functions were utilized with the study.

RECOVERY OF PLATINUM GROUP METALS FROM SPENT …

RECOVERY OF PLATINUM GROUP METALS FROM SPENT …

generated at the anode. This is coupled to a as shown in Figure 1 where the oxidant is consumed to dissolve the platinum present on the catalyst leaving the support unreacted. In principle, the overall process involves Figure 1 Closed loop process involving stage and simultaneous reagent

Leaching of Residual Steel Slag from a Mineral Carbonation ...

Leaching of Residual Steel Slag from a Mineral Carbonation ...

 · tests were carried out with three different stainless steel slags from the Tornio Works: ground, water-cooled Argon Oxygen Decarburization AOD slag, filler slag the fine portion of AOD and ladle slag, and air-cooled AOD slag.

Effect of Pretreatment on Leaching Primary Copper Sulfide ...

Effect of Pretreatment on Leaching Primary Copper Sulfide ...

The aim of this study was to improve the dissolution of copper sulfide ore composed mainly of chalcopyrite 1.21 wt % and bornite 0.54 wt % using a pretreatment before . The effect of the pretreatment on copper sulfide dissolution was investigated using different types of . Three sets of experimental tests were performed flask, and mini-column.

ALKALINE LEACHING OF ZINC FROM STAINLESS STEEL …

ALKALINE LEACHING OF ZINC FROM STAINLESS STEEL …

EAF2 from Stainless Tornio, Finland, were leached using NaOH solutions. The purpose was to selectively out zinc from the dusts and to find factors that affected most dissolution of zinc. From all factors temperature, agitation speed and NaOH concentration were found to be

US Patent for Selective two stage leaching of nickel from ...

US Patent for Selective two stage leaching of nickel from ...

A finely-ground nickel-copper matte is leached using an acid at a minimum temperature of approx. 80.degree. C. and under oxidizing conditions in order to produce a nickel sulfate solution and a nickel-cooper sulfide residue, which is separated from the solution and thereafter the nickel-copper sulfide residue is leached using acid in an autoclave at a minimum temperature of 110.degree.

DOC Outotec Copper Chloride Leaching Process for ...

DOC Outotec Copper Chloride Leaching Process for ...

The residue is stored in suitably lined tailings bond. The gold- loaded activated carbon is burnt and gold is recovered from ash. The ash is leached and gold is precipitated after . The water balance of the total process is controlled by evaporation in copper, silver and gold and in cooling towers after both ...

Bioleaching and chemical leaching as an integrated process ...

Bioleaching and chemical leaching as an integrated process ...

Flin Flon and Kidd Creek, atmospheric direct leaching Outokumpu Kokkola and Onsan Korea Zinc, the inte-grated sulphide–silicate process Votorantim Zinc and the solvent extraction process Skorpion Zinc Souza, 2005. The traditional hydrometallurgical production of zinc from its sulphides comprises roasting, leaching and elec-

Equipment for the leaching of solid matter from sludge ...

Equipment for the leaching of solid matter from sludge ...

 · The present invention concerns equipment for the of solid matter from a sludge with the aid of a gas containing oxygen, the said equipment comprising a tall 1 equipped with a central pipe 2 and from the bottom 3, an upward-directed double-action mixer 5.The mixer is situated in the vicinity of the lower edge of the central pipe: the upper blades 13 of the ...

Leaching of chalcopyrite in cupric chloride solution

Leaching of chalcopyrite in cupric chloride solution

HydroCopperTM technology was developed by Research. It is a novel copper production method based on the efficient properties of cupric chloride solutions. The is operated at atmospheric pressure, near the boiling point of water in a stirred and the pH is kept between 1.5-2.5.

Indian Patents. 235504:METHOD FOR PROCESSING ANODE SLUDGE

Indian Patents. 235504:METHOD FOR PROCESSING ANODE SLUDGE

In addition, the nitrate bearing sludge must be mechanically ground finer, in order to make the successful. From the publication Hoffman et al.: Proceedings Copper 95, International Conference Vol. Ill, 1995, pp. 41 - 57, there is known a method for processing anode sludge obtained from …

PDF Outotec atmospheric zinc concentrate direct leaching ...

PDF Outotec atmospheric zinc concentrate direct leaching ...

The now zinc plant at Kokkola in Finland has since the start-up more than 40 years ago been using - leaching - solution purification - electrowinning - casting...

ASSESSING THE PERFORMANCE AND CAPACITY OF MATTE …

ASSESSING THE PERFORMANCE AND CAPACITY OF MATTE …

number, which is defined in the following expression: s l r t N L = [1] where t is the mean residence time, rs is the rate of shrinkage of the particles leaching kinetics and l is the mean particle size. Equation [1] suggests that in order to achieve a particular conversion in a there are only three variables that can be

US5585079A - Method for leaching material containing zinc ...

US5585079A - Method for leaching material containing zinc ...

The invention relates to a method for recovering zinc from a zinc oxide bearing material containing silicates. According to the method, the of zinc compounds is carried out in circumstances where the silicates remain undissolved and consequently do not cause filtering problems. The silicate bearing residue is treated in a Waelz process, so that the major part of the silicic acid ...

Products and services - Japrotek Oy Ab

Products and services - Japrotek Oy Ab

When in the eighties owned the company equipment for the hydrometallurgical industry like autoclaves became part of the product range. The demanding pressure vessel products and the international customers soon required that a quality control manual was set up.

PDF Atmospheric zinc concentrate leaching of Outokumpu ...

PDF Atmospheric zinc concentrate leaching of Outokumpu ...

The direct process, based on special developed by is the most economical way to produce electrolytic zinc.

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