sulfide ore results

Materials and Extraction Solutions. Low-grade polymetallic Ni–Cu–Fe-bearing sulfide ore samples were collected from Jinchuan, Gansu, China.Table 1 lists the main chemical compositions of the test samples. Figure 1 shows the X-ray diffraction (XRD) patterns of the sulfide ore. Figure 2 presents the results of the mineralogical …

Metal sulfides are the most important group of ore minerals. Here, we review what is known about their compositions, crystal …

The test results demonstrate that for the sulfide ore samples collected from a spontaneously combusting mine, The total consumptions of oxygen during TPO test were relatively larger in comparison with those sample from a mine without spontaneous fire record in history. Also it is shown that the microstructural surface features of the ore ...

VMS ore-forming fluids are acidic, reduced, 1–3 M chloride solutions in which metals were transported mainly as chloride complexes (Table 3).Before the discovery of black …

In Fe-poor ore deposits, for example, sulfide assemblages will include covellite, digenite, or chalcocite, but not pyrite or pyrrhotite. Diagrams such as the one in …

Magmatic Ni–sulfide ore deposits are generally associated with basaltic to komatiitic igneous rocks that originate by partial melting of the mantle, which is usually modelled as a uniform four-phase peridotite. Existing models accept that the key metal contributors to mantle melts are olivine (Ni) and sulfide (Cu, platinum group elements …

Figure 10.79 shows the calculated results and it is evident that the liquid is retained to lower temperatures than would occur by equilibrium freezing, ... (oxide) ores. Sulfide …

Ore sulfide minerals make up 84.93%, rock minerals—15.07%. The mass fraction of iron sulfides is the largest and equals 80.14%. Chalcopyrite accounts for 50.0% of non-ferrous metal sulfides, tennantite—11.9%, bornite—9.3%. ... Figure 6 shows the results of ore slurry treatment with hydrogen peroxide in an intercycle operation instead of a ...

2.1. Preparation and Analysis Of Sulfide Ore Concentrate and e-Waste. Sulfidic gold ore concentrate was sourced from a gold mine in Western Australia and had a particle size with a P80 (i.e., 80% of mass passing) of 120 µm. The gold ore concentrate was sterilized by autoclaving before leaching experiments (121 °C for 20 min).

The age of the oldest Th-U in the sulfide ore from the hydrothermal mounds is estimated at 7.2 ± 1.8 ka (Kuznetsov et al., ... Results show that hydrothermal venting at the active High Rise ...

Based on the mineralogical characterization for the polymetallic sulfide ore, the way to improve silver recovery was studied. The results showed that silver was the most valuable metal whose grade was 448.82 g/t Ag, while 0.118% Cu, 1.65% Pb and 1.06% Zn may be comprehensively utilizated. The main silver-bearing minerals were …

Sulfide mineralization is common to ore deposits mined by the metals, minerals, and energy sectors. As a result, sulfide-mineral oxidation within mining wastes is one of the most significant environmental challenges faced by the mining industry worldwide (Blowes et al., 2014). This issue is largely attributed to storage of mining and mineral ...

Oxidation mechanism of Ni–Cu sulphide ore. Considering the aforementioned results, the reaction sequence of the Ni–Cu sulphide ore during the roasting in air was deduced, as summarised in Table 1.

Results showed that the maximum copper dissolution efficiency was 93.12% with water leaching, and 97.16% with acid leaching. Chemical analysis revealed that the water and acid leaching residue contained 48.13% and 31.64% of iron, respectively. ... Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from ...

The flotation results of copper sulfide ore are shown in Table 7. At pH 9.2, PAAS and GA were used as combined depressant and PBX as collector to form a closed cycle mixed flotation separation test.

According to the characteristics of nickel ore resources in China, the research on bioleaching mainly focuses on low-grade nickel sulfide ore. The current research results show that low-grade nickel ore resources (lean ore and tailings) had good bioleachability, and tailings were easier to leach than lean ore.

bustion of sulfide ore have been reported, which have resulted in the waste of ore re- ... The results in Figure 1 show that their main components were pyrite, marcasite, quartz, calcite ...

The results of XRD, FTIR and SEM analysis confirmed that the DTR had no obvious effect on the mineralography of sulfide ore. (4) For effective industrial application, in order to accelerate the start-up process of artificial microbial community treatment systems, temperature control measures should be increased in the bioleaching process …

The results showed that acidity and Fe 3+ ion affected dissolution of both ores significantly; high valence manganese oxide reduction takes precedence which is in control of the Ni, Mn, Cu, and Co dissolution of the nodule; Ni, Cu, and Co extraction from the nickel ore is a course of sulphide minerals oxidative conversion which significantly ...

consume the sulfide melt and form platinum group minerals, while Ni and Cu are partitioned between the silicate melt and the fluid phase. These experimental results illustrate how the occurrence of a fluid phase in a mafic-ultramafic magma may represent a significant boost for magmatic sulfide ore forming processes: sulfide melt

Currently, the sulfide ore are the predominant raw materials for refining extract nickel metal 1,2,3. Unfortunately, the grades of sulfide ores are falling as the higher grade reserves are ...

A promising trend is the use of heterocyclic compounds, since nitrogen and sulfur heteroatoms are reactive and, under certain conditions, form complexes, including chelate, with atoms that are part of sulfide minerals. This review presents the results of using heterocyclic reagents for sulfide ore flotation in laboratory and industrial conditions.

In Fe-poor ore deposits, for example, sulfide assemblages will include covellite, digenite, or chalcocite, but not pyrite or pyrrhotite. Diagrams such as the one in this box (Figure 9.46) are useful ways to describe complex mineral relationships without words, and we use them to predict and interpret ore deposit mineralogy. ...

Then, batch flotation tests were implemented to compare the collectorless flotation behaviors of the three minerals in Shizhuyuan ore (i.e., Mo–Bi sulfide ore). On the basis of the results obtained from the laboratory test, a modified flotation flowsheet, including a pre-concentration stage with collectorless flotation, was proposed and ...

The results of studying Au-sulfide ores from the Sovetskoe deposit (Yenisei Ridge) and analyzing data on native gold fineness and low Au/Ag ratios in …

Oxide compounds are released in a deliberately solid state at relatively low temperatures (∼800 °C according to the diagram Fig. 10 c), as a result of which a rigid framework of oxide ore mineralization is formed in place of a …

3.3.9 Results of the Ore-Lifting Test. The slurry concentration, flow rate, and pressure during the test were monitored by a monitoring system installed in the ore-collecting test machine, the submersible pump, the lifting pipe, and onboard pipes. ... SMS is a complex sulfide ore and it is known that the origin of SMS is similar to that of the ...

Thiosulfate as an Alternative Lixiviant to Cyanide for Gold Ores. M.G. Aylmore, in Gold Ore Processing (Second Edition), 2016 4.2.1 Sulfide Dissolution. Sulfide minerals such as arsenopyrite, pyrrhotite, and pyrite can also be partially leached in ammoniacal thiosulfate (Feng and van Deventer, 2002a; Xia and Yen, 2005; Xia, 2008) and under these …

Based on the XRD results, the types of conductive sulfide minerals were considered: pyrite (FeS 2), chalcopyrite (FeCuS 2), and galena (PbS). All the metal …

The results of this study indicate that RS could be a future tool for online mineral analysis of sulfide ore as the detection of chalcopyrite, sphalerite, and pyrite is feasible. RS could simplify the online analysis for mineral quantification, as there would be no need for estimation of different element distributions between minerals.

sulphide ore, or fractions separated from such an ore, in terms of minerals contained, as well as their relative association in space is thus required. ... contradictory results are at times presented by laboratory studies. As was stressed previously by the author (22), most of these difficulties lie in the lack of stability of ...

The Moran komatiite-hosted Ni sulfide deposit at Kambalda (Australia) is one of the better preserved orebodies at Kambalda. Its geochemical signature is used to investigate the evolution of the sulfide mineralization. The orebody has several parts, including a flanking segment where massive sulfides formed relatively early and a central …

This article describe a low temperature oxidation experiment and nine different sulfide ore samples to investigate a new evaluation method of oxidation activity of sulfide ores. ... v 7, v 8 and v 9 are corresponding to the ore sample 1–9. The experimental results show that fluctuation range of weight gain rate under oxidation condition I-IV ...

If sulfide ore or sulfide tailings are exposed to water and air during mining, a chemical reaction creates sulfuric acid – basically battery acid. ... The Aquila Back Forty project is located on the bank of the Menominee River, and would result in the excavation of an 800′ deep open pit, just 100′ from the river, and total wetland impacts ...

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 ore bodies containing problematic elements like arsenic, which make smelting less economical. Smelting is increasingly expensive …

The results of the leaching test on roasted gold ore showed that pretreatment is an essential stage in the processing of refractory gold ore. Gold extraction can be increased significantly from 47.5 % without pretreatment to 92.5 % after pretreatment with 90.6 % sulfide mineral oxidation.

Gold ore from Goldstrike, NV, is a typical refractory gold ore containing sulfide and carbonaceous matter. Alkaline pressure oxidation followed by thiosulfate gold leaching results in low gold ...

However, in sample B (a different copper ore), distribution of copper sulfide was dispersed primarily in each ore particle, so for the particle size class of 3 × 1 cm, liberation of copper sulfide and gangue minerals was not significant. In view of the XCT results, dual energy (DE) X-ray radiography was used as a basis for sorting.

Abstract. The oxidation-induced alteration of properties of sulfide minerals is analyzed. The air-and-gas content and thermodynamic parameters of mine air are experimentally investigated as a case-study of blind roadways in sulfide deposits at a depth of 300–1500 m. The microclimate conditions of sulfide ore oxidation are determined and …

Recently, Li et al. obtained U-Pb ages of 833 ± 5 and 840 ± 6 Ma from monazite grains associated with Cu-(Au) sulfide ore. Results Petrographic descriptions of the host rocks and analytical details for laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS), stable isotope ratio mass spectrometry (IRMS), and electron …