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Saturday, July 18, 2020 | History

3 edition of Solvent Extraction of Cobalt From Laterite-Ammoniacal Leach Liquors. found in the catalog.

Solvent Extraction of Cobalt From Laterite-Ammoniacal Leach Liquors.

United States. Bureau of Mines.

Solvent Extraction of Cobalt From Laterite-Ammoniacal Leach Liquors.

by United States. Bureau of Mines.

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  • 22 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesReport of investigations (United States. Bureau of Mines) -- 8419
ContributionsNilsen, D., Siemens, R., Rhoads, S.
ID Numbers
Open LibraryOL21738941M

reagents for the solvent extraction of nickel (and cobalt) from lateritic leach liquors was pointed out in the early s by Grinstead, who used dinonylnaphthalene sulphonic acid in conjunction with some 2-pyridyl compounds for the recovery of these metals from . extraction into account, the process parameters optimized as; leaching at °C with g/L nitric acid concentration, 48 hours of experiment duration, µm particle size using S/L ratio of 1/5 wt/vol. % nickel and % cobaltFile Size: 4MB.

Silica mitigation in copper solvent-extraction circuits. Proceedings Copper Cobalt Africa Conference, Southern African Institute of Mining and Metallurgy, Johannesburg, pp. – K. C. Sole, O. S. Tinkler (). Copper solvent extraction: status, operating practices and challenges in the African Copper Belt. iron and arsenic from the cobalt POX pregnant leach solution. Under optimum conditions, about 99% of the arsenic and iron were precipitated without significant cobalt loss, producing final solutions assaying of cobalt solvent extraction from the purified solution ranged from 91 to 98%, the co-.

  What is Solvent Extraction? Solvent Extraction, also known as liquid-liquid extraction, is a method to separate compounds based on their relative solubilities in two different immiscible liquids, usually water and an organic solvent. 3. Importance of the process: The Solvent Extraction(S.E.) process was first developed as a tool of analytical. The optimum conditions, devised as a result of this investigation, to extract cobalt from an acidic nickel laterite leach solution using the ESPLIM technique are as follows: an applied electric field strength of kV/cm. a raffinate pH of , a solvent containing 10% Cyanex with 5% TBP in Solvent HF diluent, a feed to strip flow ratio of Cited by: 1.


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Solvent Extraction of Cobalt From Laterite-Ammoniacal Leach Liquors by United States. Bureau of Mines. Download PDF EPUB FB2

@article{osti_, title = {Solvent extraction of cobalt from laterite-ammoniacal leach liquors}, author = {Nilsen, D N and Siemens, R E and Rhoads, S C}, abstractNote = {The Bureau of Mines is developing a method to recover Ni, Co, and Cu from laterites containing less than % Ni and % Co.

The method consists of the following basic unit operations: (1) reduction roasting, (2. Solvent extraction of cobalt from laterite-ammoniacal leach liquors.

Washington: U.S. Dept. of the Interior, [] (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: D N Nilsen; R E Siemens; S C Rhoads; United States.

Bureau of Mines. Solvent extraction of nickel and copper from laterite-ammoniacal leach liquors Paperback – January 1, by D. Nilsen (Author) See all formats and editions Hide other formats and editions. Price New from Used from Paperback "Please retry" $ $ Author: D.

Nilsen. Solvent extraction of cobalt from laterite-ammoniacal leach liquors / By D. Nilsen, joint author. This report deals with the extraction of cobalt and the preparation of a suitable cobalt electrolyte by solvent extraction from liquor produced by this method.

Nickel and copper are coextracted with lix64n from an ammoniacal ammonium sulfate leach liquor containing about G/l ni, G/l CO, G/l cu, and G/l zn.

The solvent extraction system produced a solution suitable for electrolysis of high-purity cobalt. Preliminary cost studies indicated the novel process was competitive with other refinery systems. Plans to develop the detailed engineering-design information required to commercialize the process were abandoned when the price of cobalt collapsed.

Nickel and copper were coextracted from ammoniacal ammonium sulfate leach liquors (ph ) With lix 64n extractant in a laboratory-size mixer-settler continuous circuit. Three extraction stages resulted in > pct extraction of nickel, substantial copper extraction, and essentially no cobalt extraction from leach liquors.

The separation of cobalt from mixed solution of cobalt and lithium sulfate has been studied by the solvent extraction using Na-Cyanex as an extractant. The effects of the concentration of. Mintek has been involved in extensive test work since the early s on the recovery of nickel and cobalt from leach liquors saturated in calcium, using synergistic solvent extraction systems.

A two-sequential solvent extraction circuits allows nickel and cobalt separation. • 94% Ni and 91% Co are totally separated from the feed solution. • 20 g L − 1 of cobalt salt solution is effective to remove co-extracted impurities. • The first bench scale solvent extraction flowsheet is proposed for Caldag laterite leach Cited by: 8.

Extraction of V(V) and Cr(III) from acidic sulfate leach liquors of ilmenite using mol/L Aliquat chloride in kerosene was carried out. Different parameters affecting the extraction process such as equilibrium time, sulfate concentration, Aliquat concentration, equilibrium pH and the extraction temperature were by: 9.

excellent cobalt-nickel separation primary leach liquor by Cyanex However, manganese extraction from the leach liquor along with cobalt could not be avoided, thus increasing the cost of the process. For sulphide ores, there is another alternative; if the ore can be concentrated by flotation, matte smelting is used instead of Size: KB.

Typical leach liquors are shown in table 1. Solvent extraction coupled with electrowinning is an attractive approach for the extraction, separation, and metal recovery because it generally offers (1) leach reagent regeneration, (2) continuous processing, (3) pure metal recovery, and (4) minimum pollution potential.

Solvent extraction technique has been successfully implemented for separation of nick-el from cobalt in ammoniacal solution at Queensland Nickel Pty Ltd., Yabulu and Cawse Nickel Mine of No-rilsk Nickel, both in Australia [12]-[15].

In the present work, separation of nickel and cobalt by solvent extraction using LIX 84ICNS in ammo. A process for the recovery of nickel from ammoniacal leach liquor through an integrated solvent extraction-electrowinning (SX-EW) flowsheet was tested on a pilot-plant scale.

The objectives of the test run were to assess the reproducibility of laboratory-scale data in a large-scale continuous operation and to study the build up of impurities in the : K. Srinivasa Rao, P. Rath, T. Subbaiah. evaluation of leaching, solid liquid separation and solvent extraction circuit configurations to maximize net revenue from the overall flowsheet.

Basis of design The basis of the plant design is the treatment of an oxide/secondary sulphide deposit treating a 4 per cent copper head grade and a per cent cobalt head grade at a treatment. Abstract In this study, a hydrometallurgical treatment involving the solvent extraction and recovery of cobalt and nickel from hydrochloric acid leached solution of laterite using Cyanex and 8-hydroxylquinoline, both diluted in kerosene, has been.

(). Separation of cobalt and nickel from chloride leach solution of nickel laterite ore by solvent extraction. Geosystem Engineering: Vol. 19, No.

5, pp. Cited by: 4. Soldenhoff, K., Hayward, N., and Wilkins, D.,“Direct solvent extraction of cobalt and nickel from laterite-acid pressure leach liquors,” EPD CongressB. Mishra, Ed., The Minerals, Metals, and Materials Society, AIME, pp. –Cited by: 3. Additional Physical Format: Online version: Nilsen, D.N.

Solvent extraction of nickel and copper from laterite-ammoniacal leach liquors. [Washington, D.C.]: U.S. Sulphide minerals containing nickel, copper and cobalt extraction of valuable metals from sulphide minerals.

It is unique in its application to are taken up in the leach liquor. The selectivity of the leaching reactions determines the D.S. SMIT 9.Topics covered include: leaching of metal values by chemical reagents or bacterial action at ambient or elevated pressures and temperatures; separation of solids from leach liquors; removal of impurities and recovery of metal values by precipitation, ion exchange, solvent extraction, gaseous reduction, cementation, electro-winning and electro.Solvent Extraction and Liquid Membranes offers a comprehensive review of the most important principles, calculations, and procedures involved in this widely applicable separation technique.

The book’s pedagogical approach will benefit students and researchers in the field as well as working scientists and engineers who wish to apply solvent.