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Sphalerite tailings are the most important type of waste in the mining district of Sardinia. This situation justifies the interest in the applicability of flotation as a …Web
Experimental results showed that the two-stage roughing operation contributed to the sphalerite flotation regarding two aspects: (i) timely pre-separating the well …Web
T he early sulfide tailing dams contain large amount of use ful mineral, such as sphalerite tailing contains Corresponding author. Tel.:+86 - ; fax: +86 - 010 - 82241313.Web
Zn and Fe release show a strong increase with decreasing pH to 126 and 142 mmol (eq) kg−1, respectively. Pb release increases at pH <4 and Mn release at pH <5, both to about 10mmol (eq) kg−1 ...Web
sphalerite)aftermixedgrindingwasinvestigatedusingtheToF-SIMS. Because of the sampling depth of 1−3 nm and the ion imaging of sub-micron-resolution, ToF-SIMS is particularly …Web
In this paper we present the characterization of a tailings dam in southern Chile by means of mineralogical and geochemical …Web
The sphalerite was milled using a vibratory disc mill (Retsch, Germany). During a drilling campaign in 2013 additional samples of tailings material from the "David Schacht" tailings dam were taken. Analysis of the resulting grain fractions from sphalerite and analysis of the tailings material revealed the composition displayed in Table 2.Web
The leaching kinetics of a sphalerite concentrate containing 38.25% zinc was studied in the presence of biological and chemical ferric reagents. To produce the biological ferric reagent (BFR), a pyrite concentrate sample was oxidized to ferric ions by iron and sulfur oxidizing bacteria, and this pregnant leach solution was then applied as oxidizing …Web
Sphalerite is a common sulfide mineral, and xanthate is usually used as the collector of sphalerite flotation. In order to realize the simultaneous flotation of sphalerite- and zinc-containing oxide ores, in this paper, dodecylamine was used as the collector and sodium sulfide as the regulator to explore the flotation behavior of sphalerite in a …Web
Particle size distribution of tailing sample (A), Distribution of zinc, lead and iron in different size fractions. ... Japan) also showed that the tailing sample contain pyrite, sphalerite, and galena. Chemical analysis of the sample using Atomic Absorption Spectrometer indicated that the tailing sample contains 12.7% Zn and 20.02% Fe.Web
2. Material and equipment The sphalerite tailing comes from Nandan county of Guangxi autonomous region of China. The tailing was preconcentrated and the element content was shown in table 1. The sample was classified into three particle fractions, that is +0.063mm, -0.063 +0.045mm and -0.045mm to make the analysis more precise.Web
Sphalerite (ZnS), galena (PbS) and pyrite (FeS 2) are the important metallic sulphide minerals.These three sulphide minerals are often associated with each other, and large amounts of sphalerite and pyrite are lost in the galena flotation tailings. In this study, the flotation method was employed to recover sphalerite and pyrite from a galena …Web
Zn Pb Plant Sampling. Automatic Samplers are used to sample the feed, concentrate and tailings. A portion of the tailing from the lead flotation section is removed and treated on the Visual Sampler. The flotation results and conditions can be controlled easily by observing the concentrate streak on the table. ORE TESTING LABORATORYWeb
A sample of old tailing contained 12.7% Zn was prepared from the Kooshk deposited tailing dam and the effect of different parameters on the flotation of sphalerite and pyrite was kineticallyinvestigated.Web
In the past investigations, the separation of galena and sphalerite in flotation was generally performed via the preferential flotation of galena as well as the suppression of sphalerite, since galena exhibited superior natural floatability than sphalerite [10]. ... Leaching of zinc from a lead-zinc flotation tailing sample using ferric ...Web
A total of 10 kg of the feed sample was processed, and the results were confirmed to verify that the sample was successfully pre-concentrated in the magnetic separation process. 3. Results and Discussion 3.1. Chemical Composition of Feed Sample The XRD pattern of the feed sample in Figure 2 reveals that sphalerite was the major sulfideWeb
Panasqueira was chosen by the consortium to be an e-EcoRisk test site due to several factors: (a) it is an active mine; (b) there are huge tailings piles and dams; the Rio tailings (≈1,200,000 m 3) has one mud dam (≈731,034 m 3) and the Barroca Grande (≈7,000,000 m 3) has two mud dams (≈1,193,885 m 3); (c) small villages, S. Jorge da …Web
The early sulfide tailing dams contain large amount of useful mineral, such as sphalerite tailing contains * Corresponding author. Tel.:+86-; fax: +86-010-82241313. ... The sample was ...Web
Sphalerite tailings contains large amount of ferric sulfide and some sphalerite which need to be recoveried to further use for the utilization of resource. The …Web
The sample slurry was constantly mixed with a mechanical rotator to prevent the gravitational sedimentation of the enriched ore and tailing dry matter to the bottom of the sample container. The immersion probe was fixed in the near vicinity of the rotator. ... chalcopyrite tailing, sphalerite froth, sphalerite tailing, and pyrite froth ...Web
A representative sample was obtained from the Kooshk (Iran) tailing dam. The D 80 of particles was 90µm. Chemical analysis and mineralogical compositions of the sample is presented in Table1. The tailing contains 3.64% zinc, 0.97% lead, 24.18% iron, 2.2% organic carbon and 28.6% sulfur. Analysis Show that pyrite is the dominant mineral inWeb
The proportion of FeS in the sphalerite is quite variable, between 1. 8 and 18. 7 mol%, among grains from the same sample, among samples from the same deposit, and among samples from the same ...Web
All samples at the profile depth of 0-1 m and >4 m were mixed into a composite tailing sample (CTS1 and CTS4), respectively. All samples were stored in the labeled plastic bags, and then transferred to the laboratory. ... Similarly, sphalerite hosted a majority of Zn within CTS1 (90.0%), CTS2 (93.7%) and RTS (89.9%), respectively. …Web
The original tailing sample (T) contains a high proportion of quartz, sphalerite, and other phases, such as pyrite, chalcopyrite, arsenopyrite, and galena. However, a decrease in the intensity of the characteristic peaks (except for the quartz phase) of T-150 can be noticed, indicating that the HMs in the tailings are leached in …Web
chalcopyrite tailing, sphalerite froth, sphalerite tailing, and pyrite ... In particular, a case is considered in which the sample characterization by the separate use of a single technique fails ...Web
The grades of zinc, lead, copper, and iron were 4.88%, 0.09%, 0.09%, and 15.3%, respectively. The high content of iron in the feed sample can be attributed to the iron-rich sphalerite and iron- bearing minerals, such as pyrrhotite. Because target minerals (sphalerite, chalcopyrite, and galena) were concentrated by crushing in the portion of ...Web
Two grain mounts were made for the original tailing sample, as well as for the MR samples of 400 °C, 500 °C and 600 °C, to improve the measurement statistics and identify a sufficient number of the minerals of interest which are typically present in minor abundances in the tailing materials. ... Sphalerite and galena are the hosts of Zn and ...Web
The second sampling site (hereafter named TA) is a small and well-defined open-air tailing dump. It is located at the bottom of the WR pile and occurs as an elongated, flat body (about 10 m in length and 1 m in height) lying adjacent to a small stream collecting waters from some mine adits (Fig. 4 ).Web
Spain has a long mining tradition dating from pre-historic times up to the present day. The cessation of mining activity has generated a large amount of mine wastes, most of which represent geochemical hazards. Mine tailings are watery sludge composed of medium-to-fine-grained material, resulting from grinding and mineral processing (e.g., …Web
The sphalerite tailing comes from Nandan county of Guangxi autonomous region of China. The tailing was preconcentrated and the element content was shown in table 1. The sample was classified into three particle fractions, that is +0.063mm, -0.063 +0.045mm and -0.045mm to make the analysis more precise.Web
In this study, chitosan polymer was tested as a potential selective green depressant of pyrite in the bulk flotation of galena (PbS) and chalcopyrite (CuFeS 2 ) from sphalerite (ZnS) and pyrite (FeS 2 ) using sodium isopropyl xanthate as a collector and 4-methyl-2-pentanol (MIBC) as a frother. Flotation tests were carried out in a D12-Denver …Web
the metals from the sulfidic tailing sample, as also observed in the response surfaces (Figs. 3 and 5 ; Pb: about 70%, 1 h, experiment number 2; Cu and Zn: about 30%, 4 h, experi -Web
More than 73% of the sphalerite was recovered from the accumulated tailings in the rougher stage. The pulp viscosity was considerably increased by …Web
The zinc extraction from Kooshk lead–zinc tailing dam's sample was investigated by bioleaching method. The Kooshk lead–zinc deposit/mine is located in Yazd province, Iran, and its tailing dam contains about 3.64% zinc, 0.97% lead and 24.18% iron. Experiments were designed and carried out by a mixed culture of mesophile bacteria as …Web
The final zinc concentrates, tailing X1, and tailing X2 were collected, dewatered, dried, and weighed for zinc grade analysis and recovery calculation. Afterwards, samples of zinc concentrates of two processes were used for additional sphalerite liberation analysis by MLA. ... MLA color maps of sphalerite in sample A (a) and sample D (b).Web
