ore sulfide oxide

Mu et al. reported a process for synchronous extraction of nickel and copper from a mixed oxide-sulfide nickel ore in a low-temperature roasting system. In this process, sodium sulfate was used as an additive for improving the extraction of nickel by converting into Na-pyrosulfate, and more than 97% of nickel could be extracted after roasting ...

Sulfidation roasting of low grade lead–zinc oxide ore with elemental sulfur. Miner Eng. 23, 563–566 (2010). Article CAS Google Scholar Zheng, Y. X. et al. Sulfidation roasting of lead and zinc ...

In contrast, gold extraction from the oxide ore in a solution containing 20 g/L iodide and 4 g/L iodine reached 89% in 24 h. Iodate as the oxidant could not leach any gold in 48 h. Iodine reactions with the sulfide and the ferrous minerals of ore are the main consumers of iodine in solution.

Some employ a coupled course of relatively simple sulphide ore and high valence manganese oxide, such as coupled leaching of FeS 2 –MnO 2, ZnS–MnO 2, Bi 2 S 3 –MnO 2, and so on [[21], [22], [23]]. However, there is little research on the coupled leaching of low-grade multi-metallic manganese oxide and sulfide ore.

Mining 101: Understanding sulphide and oxide and ores. Last updated: 08:00 07 Nov 2023 EST, First published: 07:50 07 Nov 2023 EST. In the intricate world of …

During reaction of sulfide and oxide ore components a matte was obtained suitable for subsequent treatment with separation of nickel, copper, cobalt, and precious metals in the form of finished products. Fig. 6. Production scheme of combined processing for oxidized nickel and sulfide copper ores.

The sulfide-oxide lead and zinc ore was obtained by mixing the sulfide and oxide ores with molar ratio of 3:1 based on the oxidation efficiency of 30%. The whole experimental procedure is depicted in Fig. 1 including the process of Zn extraction from mixed ore ( Jia et al., 2016 ; Liu et al., 2016 ) and Pb extraction from PbO 2 -containing …

The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ( CuFeS2 C u F e S 2) are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper.

The scheme of metasomatosis and transformation of sulfide ore concentrations into oxide mineralization is the same for liquation and late magmatic deposits. It is presented in Fig. 11 as a variant for late magmatic ore concentrations. The sulfide melt is formed by condensation of sulfur after solidification of the intrusive (see …

In contrast, oxide ores consist of metal oxides – compounds in which a metal is combined with oxygen. These ores are often located closer to the surface and can be accessed via open-pit mining ...

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Ore types - ratio of oxides vs sulfides, with detailed mineralogy. Enriched oxides are ideal for early operations. ... Both oxide and sulfide deposits have roles to play. While sulfide operations drive global production thanks to scale and by-product credits, nimble oxide projects can offer faster returns on investment. By diving into the ...

A smelting workaround. The traditional route for extracting copper from sulfide ores is smelting. Yet there is a growing case for leaching sulfides from lower grade ore bodies and especially for those …

There are two main copper ore types of interest, copper oxide ores and copper sulfide ores. Both ore types can be economically mined, however, the most common source of copper ore is the sulfide ...

The major chemical components of the sulfide refractory gold ore and pyrite are shown in Table 2. The sulfide refractory gold ore (SRGO) contains 30.34% Fe, 22.23% S, 11.19% As, 3.24% Al and 60.25 g/t Au. The total content of Fe, As and S is up to 63% of the sulfide refractory gold ore. The pyrite contains 43.36% Fe and 41.26% S.

1. In terms of ore composition, copper sulfide ore is relatively complex, while the composition of copper oxide ore is relatively simple; 2. In terms of price, copper oxide ore is relatively cheap, but the cost of beneficiation agents is high; 3. The oxidation rate of ores is different, the oxidation rate of sulfide ore is lower than 30%, and the oxidation …

2.1.1 Crystal structure of copper sulfides. Copper sulfide ore, which accounts for 80% of the copper resource, is the major source for the metallic copper [1 ]. The major copper sulfide ores contain chalcopyrite (CuFeS 2 ), bornite (Cu 5 FeS 4 ), covellite (CuS), and chalcocite (Cu 2 S). The concentrates of copper from sulfides ores are ...

Many investigators have studied the kinetics of roasting of metal sulfides. By and large, roasting of zinc sulfide is carried out at and above 800 °C to produce zinc oxide [2ZnS (s) + 3O 2 (g) = 2ZnO (s) + 2SO 2 (g)]. This is known as dead roasting. The rate of oxidation is very slow at 700 °C.

The low-grade nickel-copper sulfide-oxide ore (for short as "the ore" in the following section) adopted in this study was supplied by Jinchuan Group Co., Ltd, China. The rock ore samples were crushed by a jaw crusher and following a double-rolling grinder to pass-through a vibrating screen with different standard sieves, then the ore with ...

gossan, rust-coloured oxide and hydroxide minerals of iron and manganese that cap an ore deposit. Gossans form by the oxidation of the sulfide minerals in an ore deposit and they thus may be used as clues to the existence of subsurface ore deposits, especially if distinctive boxworks are present. In addition to hydrous oxides of iron and ...

Compared with lead-zinc sulfide ore, lead-zinc oxide ore has a more complex composition, more co-associated minerals, finer embedded particle size, easy to produce slime and contains a lot of soluble salts. Various reasons lead to the difficulty of flotation treatment of lead-zinc oxide ore. big.

The need for a new process to treat Broken Hill ore arose from the depletion of the secondary oxide ore that overlay the major sulfide mineralization. Natural oxidation to form the secondary zone had …

This way, more than 160 minerals that contain copper are known but only two main families have importance: oxidized ore (cuprite, Cu 2 O; tenorite, CuO) and …

The leaching behavior of gold from an oxide gold ore using copper–tartrate–thiosulfate solutions has been investigated. Experimental parameters, including temperature, initial pH, and concentrations of copper tartrate and thiosulfate, were systematically studied. The capability of gold leaching using copper–tartrate–thiosulfate …

SOKIC M D, MILOSEVIC V D, STANKOVIC V D. Acid leaching of oxide-sulfide copper ore prior the flotationâ€"A way for an increased metal recovery [J]. Hemijska Industrija, 2015, 69(5): 453âˆ'458. [8] HOPE G A, NUMPRASANTHAI A, BUCKLEY A N. Bench-scale flotation of chrysocolla with n-octanohydroxamate [J]. Minerals Engineering, …

Sulphidisation, an electrochemical process for conversion of a non-sulphide, oxide or oxidised sulphide, to a sulphide surface that facilitates efficient adsorption of thiol collectors to impart hydrophobicity, offers a way to improve the enrichment of oxide and oxidised sulphide ores by flotation. ... Flotation of a copper sulphide ore from ...

The mixed oxide-sulphide ore is known to be the most complex copper-cobalt ore from a beneficiation point of view. These are usually treated through a two-stage differential sulphide-oxide flotation process (Bulatovic, 2010; Shungu et al., 1988). Here Cu-Co sulphide minerals are floated first, followed by addition of a sulphidising agent such ...

The free radicals generated by ultrasound-activated persulfate effectively promoted the oxidation of sulfide in the gold ore. The pretreatment efficiency of this process was higher than that of traditional heat activation, and the oxidation efficiency was two times higher. ... The Fe(II) peak at 709.6 eV and 708.4 eV corresponds to the …

Mixed sulphide–oxide lead and zinc ores are most often found in the transition, and occasionally in the oxidised, zones of lead–zinc ore-bodies. They are of great importance because there are numerous unexploited or abandoned reserves of these ores in the world. However they present difficulties for conventional mineral processing due to ...

Chemistry. Chemistry questions and answers. Match each of the following transition metals to the type of method used to isolate it from its ore. Clear All Pt Reduction of oxide Sc Sulfide roasted to oxide and then reduced Free or readily decomposed to metal by heating Electrolysis of molten salt Zn Match each of the following transition metals ...

During the bioleaching of oxide-sulfide copper ore with the presence of extra energy sources, the strains firstly oxidize the more accessible source of energy (S 0 /Fe 2 +) in the bulk fluid deserved an evaluation before combining polysulfide and Fe 2 + utilization in subsequent CuFeS 2 dissolution (Vilcáez et al., 2008).