1/11/1991· FLOTATION OF CHALCOPYRITE, PENTLANDITE, PYRRHOTITE ORES TABLE 1 Approximate ore compositions Sudbury Thompson Shebandowan Pentlandite 3.0 7.1 5.0 Chalcopyrite 3.7 0.5 2. ~ Pyrrhotite 20 23 20 Quartz 16 28 6 Feldspar 14 24 7 Chlorite 21 25 Biotite 11 7 Amphibole 10 6 < 5 Carbonates 2 < 5 10 Tremolite - 15 Talc - 4 SUDBURY Primary separation The
A review is given of the processing of copper-nickel ores with particular emphasis placed on the rejection of the mineral pyrrhotite which is the principal source of sulfur in concentrates that are smelted. Methods of treatment that have evolved for processing ores from three different localities with slightly different mineralogical composition are described and the reasons for the processing
1/10/1996· The tech- nique proposed is a differential flotation process that exploits the ease of flotation of chalcopyrite in the complete or virtual absence of collector but in the presence of sulphur dioxide together with an effective complexing agent, such as dieth- ylenetriamine @ETA), and a frother, whereby both pentlandite and pyrrhotite are depressed allowing selective recovery of chalcopyrite
A new method for the treatment of Ni-Cu sulphides ores from the Sudbury region by differential flotation is presented. The method exploits the ease of
18/7/2013· (1996). Differential Flotation of Chalcopyrite, Pentlandite and Pyrrhotite in Ni–Cu Sulphide Ores. Canadian Metallurgical Quarterly: Vol. 35, No. 4, pp. 329-336.
The pentlandite, chalcopyrite and pyrrhotite from Enonkoski ore ground in a steel mill floated easily without a collector at low pH values of 3–5 (Figure 1). The floatability of these three minerals was improved when the same ore was ground in a ceramic mill (Figure 2). This suggests that collectorless flotation in acidic pH can be adopted as
Pentlandite Pyrrhotite Pentlandite Chalcopyrite Pyrrhotite Sudbury 87.0 13.0 12.5 9.8 77.7 Thompson 94.8 5.20 20.1 1.5 78.4 Shebandowan 91.8 8.20 16.0 7.6 76.4 (Reprinted from Agar GE (1991) with permission from Elsevier Science.) amounts of pyrrhotite in this way, the concomitant pentlandite losses into Sotation tailings are highly unsatisfactory, in addition to the problem of water
approximately 45–55% pyrrhotite, 30–35% pentlandite and 15–20% chalcopyrite, and with minor pyrite. The nature of the mineralization of these ores is such that the natural pH of the ore slurries is always alkaline, at a pH of around 9. The PGEs are recovered by flotation and the flotation of the BMS is treated as a bulk sulphide recovery
The pentlandite-chalcopyrite-pyrrhotite ore around the Sudbury Structure formed from sulfide melts that segregated from the melt sheet produced by the impact. Hydrogen catalysis. Pentlandite is a catalyst for production of hydrogen and oxygen from water using electricity. It is said to be as effective at this as platinum, which is significantly rarer and more expensive.
promotes the flotability of all principal sulphides in the ore leading to a bulk flotation concentrate. The ease of individual mineral flotability under normal aeration conditions, which is chalcopyrite > pentlandite > pyrrotite, changes to pentlandite > chalcopyrite > pyrrhotite under oxygen-deficient conditions. This behaviour is correlated with the catalytic activity ofthese minerals for
Although the treated chalcopyrite and pentlandite displayed low recoveries at all pH values, the treated pyrrhotite displayed high floatability at acidic and neutral pH. The recovery of the
Abstract. Pyrrhotite (Po) is one of the most abundant sulfide minerals in processing industry and must be rejected in most cases. Particularly, Po rejection and its selectivity against pentlandite (Pn) have long been a challenge due to similarities in the mineral composition of the two minerals and the collectorless flotation characteristics of Po.
The pentlandite-chalcopyrite-pyrrhotite ore around the Sudbury Structure formed from sulfide melts that segregated from the melt sheet produced by the impact. Hydrogen catalysis. Pentlandite is a catalyst for production of hydrogen and oxygen from water using electricity. It is said to be as effective at this as platinum, which is significantly rarer and more expensive.
The disadvantage of this method is the formation of a flotation pulp of large quantities of sludge, presents fine particles of chalcopyrite and pentlandite, which is not effective izvlekali in concentrates, lost with waste products (Abramov A.A. enrichment Technology oxidized and mixed ores of non-ferrous metals. M.: Nedra, 1986, p.23-30). This
PDF IntroductionDifferent sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Find, read and cite all the research you need on
approximately 45–55% pyrrhotite, 30–35% pentlandite and 15–20% chalcopyrite, and with minor pyrite. The nature of the mineralization of these ores is such that the natural pH of the ore slurries is always alkaline, at a pH of around 9. The PGEs are recovered by flotation and the flotation of the BMS is treated as a bulk sulphide recovery
Most of the world’s nickel is extracted from the mineral pentlandite, (Ni, Fe)9S8, which frequently occurs in ores containing predominantly pyrrhotite and various non-sulRdes, some of which contain magnesium (Table 1). The nickel content in such sulRde ores is generally low (0.2}3%) and varies from place to place in the same deposit. The low nickel content of the present-day nickel sulRde
pentlandite and 15–20% chalcopyrite, and with minor pyrite. The nature of the mineralization of these ores is such that the natural pH of the ore slurries is always alkaline, at a pH of around 9. The PGEs are recovered by flotation and the flotation of the BMS is treated as a bulk sulphide recovery. In order to maximize PGE recovery, the recovery of all the BMS needs to be optimized. It is
Bench flotation experiments on a skarn-type magnetite ore from Kazakhstan containing 2.0 to 3.5 percent sulphur were performed to systematically investigate the flotation behaviour of sulphides in
Pentlandite Ore Crushing Circuit. Silica ore crushing circuit Iron Ore Crushing Circuit Flow Sheet. Beneficiation is a process which removes the gang particle like Alumina Silica from the Iron Rock Crushing Plant . Details. Get Price. News List. Winston Gold Tests Crushing and Milling Circuit at. Dec 17, 2020· Approximately 90 tons of low-grade gold-bearing material wascrushedto a size of
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