Sulphidising flotation of oxide copper–cobalt ores with sodium hydrosulphide used as sulphidising agent is common practice in Katanga, Democratic Republic of Congo.From laboratory investigations ...

Research using a continuous flotation test unit has resulted in a flowsheet that allows the recovery of 70 pct or more of the cobalt in Missouri lead ore copper concentrates, at grades of greater than 3 pct Co or 7 pct combined Ni-Co. This can be accomplished on feeds grading as low as 0.25 pct Co.

Correlation between copper and cobalt recoveries during flotation (F) or leaching (L) reflecting cobalt mineralogical deportment, mostly in carrollite (Car) or heterogenite (Het), for different ...

This research aimed at recovering metals retained in the tailings from the flotation of copper (Cu) and cobalt (Co) ores conducted at the New Concentrator in …

Potential-controlled flotation and depression of copper sulfides and oxides using hydrosulfide in non-xanthate systems. D. Nagaraj A. Gorken. Chemistry, Materials Science. 1991. AbstractThe complete behavior of flotation and depression of copper sulfides and oxides as a function of potential modified by sodium hydrosulfide in certain non ...

Aromatic dithiophosphates are used preferentially for the flotation of lead minerals, often containing silver.-Thiocarbamates are a family of organosulfur collectors. There are two isomeric forms of ... Effects of the sulphidising agent type and dosage of the flotation of oxidised copper-cobalt ore with xanthates (modified from ...

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 of great commercial...

WebMay 17, 2023 There are many minerals in nature that contain cobalt, and it is typically obtained as a by-product from copper, nickel, silver, gold, lead, zinc, manganese, arsenic, and iron ores [7, 8]. ... Bell DT (2012) Flotation of cobalt bearing minerals from a mixed copper-cobalt oxidized ore. Dissertation, University of Johannesburg ...

Abstract This research aimed at recovering metals retained in the tailings from the flotation of copper (Cu) and cobalt (Co) ores conducted at the New Concentrator in Kipushi (NCK). Metals retention in the tailings (0.73% Cu and 0.37% Co) increased due to the removal of the gravity separation section from the processing circuit together with …

Mordogan investigated the recovery of cobalt in pyrite and chalcopyrite concentrates obtained using the flotation method from Küre ore and results of the flotation experiments indicated that 75% of the cobalt was in the pyrite concentrate and 18% was in the chalcopyrite concentrate.

Porphyry copper deposits are important sources of copper and typically processed by flotation to produce copper concentrates. As mining areas become deeper, the amounts of impurities, such as sphalerite, can be increased in copper ores, so the appropriate depression of sphalerite floatability should be achieved to obtain saleable copper …

Abstract. Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper ...

In conjunction with Ausmelt Chemicals, Minto is currently investigating options to recover copper oxide and sulphide minerals using flotation by blending their primary sulphide ore with oxide ores ...

A hypothetical optimisation solution assessment showed that SA provides the best set of solutions for the maximisation of rougher copper recovery, obtaining a throughput of 638.02 t/h and a total net gain percentage of 14%–15.5% over the other optimisation algorithms with. a maximum copper recovery of 94.76%.

Abstract. Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processing industry. In this paper, the surface properties of copper oxide minerals and their effects on the mineral ...

The process involves two basic flotation methods: (a) fatty acid flotation of oxide copper minerals from siliceous ore, and (b) sulphidization of oxide copper minerals followed …

Silver is often associated with lead-zinc ore, copper ore, gold ore, and limonite, and is mainly produced by flotation.The silver intercalation in its silver-bearing minerals is fine and complex in size, and combined beneficiation methods such as flotation-cyanidation and gravity separation-flotation are often used.. JXSC will customize complete silver …

A Copper Flotation Flowsheet. Because the copper in this type of ore usually assays only plus or minus 1% copper, the porphyry copper operations must be relatively large in order to be commercial. The flowsheet in this study illustrates a typical 3,000 ton per day operation. In general most operations of this type have two or more …

More than half of the global cobalt supply from primary sources is currently produced in the Democratic Republic of Congo (DRC) from ores containing copper-cobalt oxides or copper-cobalt sulphides. Where oxide and sulphide cobalt-bearing copper minerals occur together, efficient recovery of copper and cobalt is known to be extremely …

Insufficient addition of the sulphidisation reagent will cause poor recoveries and an excess will cause the depression of oxide copper minerals (Lee et al., 1998). For mixed oxide and sulphide ores, CPS is unsuitable for simultaneous flotation of copper 0892-6875/$ - see front matter Ó 2008 Elsevier Ltd.

Recovering valu-able metals such as cobalt from tailings can help con-serve resources and meet the demand for metals. The aim of this study is to investigate the enrichment …

Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processing industry. In this paper, the surface properties of copper oxide minerals and their effects on the mineral flotation behavior …

Semantic Scholar extracted view of "Flotation of Oxide Copper and Copper Cobalt Ores" by S. Bulatovic. ... ABSTRACT Developing specific flotation collectors to improve the separation and enrichment of copper oxide minerals from their ores is still a challenging job. In this article, a novel chelating … Expand. 22. PDF. 2 Excerpts;

Reliable information on the surface state of sulphide copper minerals and regularities of sulphidization and flotation of oxidized copper minerals, the composition of sorption layer on the mineral surface forming during its interaction with xanthate or dixanthogen, and the influence of collector forms sorption on the copper minerals …

bulk oil process. flotation, in mineral processing, method used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic condition—that is, the surfaces are either repelled or attracted by water. The flotation process was developed on a commercial scale early in the 20th century to remove very fine mineral ...

⛏️Activator HH01 is a powerful reagent designed for the flotation of various minerals, including gold, silver, platinum ore, pyrite, and nickel pyrite. ... copper-cobalt mines in the DRC ...

The focus of this research was to compile fundamental information on the flotation of silver-bearing minerals. The data reported in this paper represent a preliminary effort to understand the fundamental flotation behavior of silver minerals. ... The Alaskan concentrate obtained from tabling contained 5% to 10% copper-silver …

The mineral composition of copper–cobalt ores is more complex than that of copper sulfides, and it is also difficult to discard tailing efficiently in primary flotation for the fine-grained disseminated of ore. …

Froth flotation is a physicochemical process that is used to separate fine mineral particles from aqueous suspensions by selective attachment of some types of minerals to air bubbles. Froth flotation is the most important mineral processing technology for the production of valuable mineral concentrates from which metals and minerals are …

Fig. 1, Fig. 2 present the effect of water types used on copper and cobalt grade-recovery curves obtained after 30 min flotation. As could be seen from Fig. 1, Fig. 2, when the ore was floated with NCK process water, the initial recoveries of copper and cobalt decreased below 25% and 30%. Copper and cobalt grades have dropped as well.