Most investigators regard CuFeS 2 as having the formal oxidation states of Cu+ Fe 3+(S 2−)
2. However, the spectroscopic characterisation of chalcopyrite is clearly influenced by the …

Polymetallic manganese nodules (PMN), cobalt-rich manganese crusts (CRC) and seafloor
massive sulfides (SMS) have been identified as important resources of economically …

In ores, chalcopyrite is usually associated with other sulfide minerals, such as sphalerite,
galena, and pyrite, in a dispersed form, with complex mineralogical structures. Concentrates …

Chalcopyrite is the most abundant copper ore and, consequently, the most utilised to
produce metallic copper. The main route of treatment is through pyrometallurgical …

Deep-sea ferromanganese minerals (manganese nodules and cobalt-rich crusts) are
abundant in Co, Ni, Cu, Mn, and other metal resources, which are critical metals to support …

Most copper minerals are found as sulfides, with chalcopyrite being the most abundant.
However; this ore is refractory to conventional hydrometallurgical methods, so it has been …

This article focuses on the development of phase transformation and morphology of low-
grade pyrolusite during carbothermal reduction using microwave heating. The XRD, SEM …

A simultaneous leaching process to extract both bismuth and manganese by one-step
leaching in hydrochloric acid solution is proposed in this paper. Thermodynamic …

The solvent extraction of copper (II) from hydrochloric acid solution has been investigated
using the commercial extractant, Cyanex 921 in kerosene. The effect of hydrochloric acid …

This paper presents results of investigation on leaching of chalcopyrite in hydrochloric acid
medium in the presence of deep-sea manganese nodules. The effects of temperature, acid …