Lignite Recovery of Cobalt 3 Plus From an Ammoniacal Ammonium Sulfate Solution.
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Lignite Recovery of Cobalt 3 Plus From an Ammoniacal Ammonium Sulfate Solution.

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

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Edition Notes


SeriesReport of investigations (United States. Bureau of Mines) -- 8870
ContributionsSlavens, G., Traut, D., Penner, L.
ID Numbers
Open LibraryOL21738068M

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  To reduce the cost and complexity of cobalt recovery, an alternate method using lignite to extract co3+ was investigated as reported herein. In the first 25 bv (bed volumes) of solution contacted with lignite, 97 wt pct of the co3+ was extracted in a downflow column of ph After 85 bv, the lignite was loaded to Wt pct co3+ and further   The Bureau of Mines has devised a procedure using a chelating ion-exchange resin to extract cobalt from a ph Copper leach solution containing 30 mg/l carbon monoxide. Cyclic tests in 4-ft-high by 1-in-diam columns gave an average cobalt extraction of 95 pct when 65 bed volumes of solution were processed at a flow rate of 4 gpm/ft2 of resin The reduced products were then easily leached with ammoniacal solution (NH 3, NH 4 HCO 3, and H 2 O 2) at high efficiencies (% Li, % Ni, and % Co). A key disadvantage of ammoniacal leaching is that the formation of stable metal‐ammonia complexes can impede the separation and recovery of metals through selective precipitation and A process for the separation and recovery of cobalt and nickel was optimized for a sulfate leach solution of Indian Ocean sea nodules containing 80 g/m3 cobalt and g/m3 nickel using the sodium

For a solution containing 3 g dm−3 each of copper and nickel and 60 g dm−3 ammonium carbonate, conditions were established for the co-extraction of both metals, ammonia scrubbing and selective Approximat tonnes of cobalt are produced annually worldwide, which represents an estimated $1–3 billion in annual sales depending on cobalt price :// The use of electrochemical techniques in the selective recovery of gold from a solution containing thiosulphate, ammonia, and copper, obtained from the leaching of printed circuit boards from The material and content contained in the Greenbook label database is for general use information only. Agworld and Greenbook do not provide any guarantee or assurance that the information obtained through this service is accurate, current or correct, and are therefore not liable for any loss resulting, directly or indirectly, from reliance upon this ://

  3. Recovery of metals from TPP solid wastes. have proposed a flowsheet in which a fly ash residue was firstly leached with an ammoniacal solution containing ammonium sulfate to recover nickel, and then the remaining solid fraction was leached in sodium hydroxide solution to recover vanadium. The extraction efficiency of Ni and V in N   Copper Leaching, Solvent Extraction, and Electrowinning The ammoniacal leach of the nickel and cobalt sulfide concentrates produces a highly buffered solution containing about g/L ammonium sulfate and 50 g/L Ni and g/L Co. While most of the sulfide sulfur is oxidized, a significant portion occurs as sulfur compounds in lower oxidation state, such as thiosulfate and sulfamate (NH 4 SO 3 NH 2 After further steps of purification, the cobalt is extracted from nickel using D2EHPA (Flett ) in an SX step to produce a pure cobalt sulfate solution from which high-purity CoSO 4 7H 2 O is