Copper is separated from the cobalt in the bulk concentrate by raising the pH up to at least 11 which depresses the cobalt minerals. Cobalt depression can be enhanced by small cyanide dosages. If the cobalt is found with chalcopyrite, bulk flotation can be carried out with xanthate at pH 10, and separation made at pH 4 with an amine and
Jul 01, 2019· The cobalt oxide minerals did not respond well to the designed flotation process: only small amounts of cobalt oxide minerals were recovered at low enrichment ratios. It was found that a dithiophosphate collector (DF245) produced the highest recovery of sulphide minerals and copper oxides after oxide sulphidisation.
Nov 01, 2019· A review of the beneficiation of copper-cobalt-bearing minerals in the Democratic Republic of Congo Aromatic dithiophosphates are used preferentially for the flotation of lead minerals, often containing silver.- Effects of the sulphidising agent type and dosage of the flotation of oxidised copper-cobalt ore with xanthates (modified from
Jul 04, 2017· The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground mines) is
Table of ContentsAcknowledgmentsMaterial Equipment and ProceduresDescription of Feed MaterialDiscussionShort-Duration TestsExtended Rougher TestsExtended Tests With
Extraction of cobalt from complex ore flotation concentrates obtained from the Blackbird Mine. Idaho. USA is reviewed. After flotation of a primary copper concentrate, a bulk concentrate is recovered containing major amounts of cobalt, arsenic, and iron, with minor amounts of copper and nickel.
Cobalt is generally exploited as a by-product of copper, nickel, silver, gold, lead or zinc extraction [58,59], but it can also be associated iron and/or arsenic minerals [59]. Determining the
The tailings also contain gold (3.36-5.00 ppm), silver (24-37 ppm), and copper (0.06-0.08 wt %). flotation selectivity of copper and cobalt towards the gangue minerals, while ammonium sulphide
The most common silver-bearing minerals recovered by flotation are argentiferous galena, native silver, argentite (Ag2S) and tetrahedrite (Cu,Fe,Ag) Sb4S3). Often these minerals float with the base metals such as copper and lead sulphides or are the primary target mineral (tetrahedrite).
NICKEL AND COBALT ORES: FLOTATION G. V. Rao, Regional Research Laboratory, Council of and copper (0.04}0.4%). The easily Soatable non-sulRde min-erals dilute the grade of the concentrate and also Developments in Flotation Flotation of Nickel Sul\de Minerals
Mineral processing. The most important sulfide sources, the copper-cobalt ores of Congo (Kinshasa) and Zambia, are processed in the conventional manner to produce a copper-cobalt concentrate. This is then treated by flotation to separate a cobalt-rich concentrate for treatment in the cobalt circuit.
A dithiophosphate collector proved to the most successful, achieving recovery of 94% of the carrollite, more than 90% of the copper sulphides, and 70% of the copper oxide minerals. The recovery of the cobalt oxides was less successful, with recovery of roughly half the kolwezite and only 20% of the heterogenite and cupro-asbolane. Despite the generally promising recoveries, the
Nov 01, 2019· A review of the beneficiation of copper-cobalt-bearing minerals in the Democratic Republic of Congo Aromatic dithiophosphates are used preferentially for the flotation of lead minerals, often containing silver.- Effects of the sulphidising agent type and dosage of the flotation of oxidised copper-cobalt ore with xanthates (modified from
copper minerals tended to crowd out the cobalt minerals. It is also possible that the cobalt is present in two forms of heterogenite,an amorphous and crystalline form each displaying a different flotation response. This became more evident in later test on DTB 3. These results indicate a promising start but since the prime objective was
Apr 06, 2007· After flotation of a primary copper concentrate, a bulk concentrate is recovered containing major amounts of cobalt, arsenic, and iron, with minor amounts of copper and nickel. This concentrate can be upgraded during flotation by removing iron, but with considerable cobalt loss.
Cobalt is generally exploited as a by-product of copper, nickel, silver, gold, lead or zinc extraction [58,59], but it can also be associated iron and/or arsenic minerals [59]. Determining the
The tailings also contain gold (3.36-5.00 ppm), silver (24-37 ppm), and copper (0.06-0.08 wt %). flotation selectivity of copper and cobalt towards the gangue minerals, while ammonium sulphide
Table of ContentsAcknowledgmentsMaterial Equipment and ProceduresDescription of Feed MaterialDiscussionShort-Duration TestsExtended Rougher TestsExtended Tests With
minerals Article Recovery of Residual Silver-Bearing Minerals from Low-Grade Tailings by Froth Flotation: The Case of Zgounder Mine, Morocco Boujemaa Drif
Recovery and separation entails floating all three sulphide minerals into a bulk flotation concentrate at natural pH or at elevated pH using soda ash. Strong flotation collectors are used, e.g. amyl xanthate and combination of dithiophosphates/mercaptobenzothiazole and xanthate, with or without prior activation of pyrrhotite with copper sulphate.
Flotation entails first attaching fine copper mineral particles to bubbles rising through an ore–water pulp and, second, collecting the copper minerals at the top of the pulp as a briefly stable mineral–water–air froth. Noncopper minerals do not attach to the rising bubbles; they are discarded as “tailings.”
The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitic-type of ancient copper slag containing 1.24% Cu, 0.53% Co and 53.16% Fe
The copper belt in the Democratic Republic of the Congo and Zambia yields most of the cobalt mined worldwide. The United States uses about one-third of total world consumption. Cobalt occurs in copper and nickel minerals and in combination with sulfur and arsenic in the sulfidic cobaltite (CoAsS), safflorite (CoAs2) and skutterudite (CoAs3
