Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
Read More
Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
Read More
By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
Read More
Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
Read More
Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
Read More
The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
Read More
Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
Read More
Fourteen reagents that are potentially capable of chelating with a metal ion on the surface of the major copper sulfide minerals and pyrite were evaluated for their effectiveness in floating these sulfides. The reagents studied fall into the classes of mercaptobenzole mutations, thiouronium, thionocarbamates, thiourea, imidazole …
Details
The depression of pyrite flotation by polysaccharides is due to the selective adsorption of polysaccharides polymers on pyrite surface. Bulut et al. (2011) investigated the depression effect of starch on pyrite flotation and found that starch was effective at a low dosage (1.7 mg L −1) and more pronounced at alkaline pH (10) than natural pH ...
Details
Ore characterization A low grade Pb–Zn ore sample, containing 31% pyrite and 44% dolomite and assayed at 2.34% Pb, 6.91% Zn and 15.36% Fe, was prepared from the Kooshk mine in Yazd province, Iran, and used as the primary ore in flotation and bioflotation experiments.
Details
In this study, the flotation behaviors of chalcopyrite and sphalerite in model samples mimicking copper ores with high Cu/Zn ratios (i.e., the ratio of chalcopyrite/sphalerite = 13:1) were investigated with zinc sulfate as a …
Details
A sample of old pyrite flotation tailings obtained at an industrial concentrator was used. The main elements contents and mineral composition of the old pyrite flotation tailings are presented in Table 14 and Table 15 and Figure 4. The sample was milled using an LDI-65 disc eraser (Techoborudovanie, Saint Petersburg, Russia) …
Details
The Qixia orebody is a complex lead–zinc sulfide system with pyrite gangue and minor amounts of copper. In order to improve the flotation results, laboratory scale flotation testing of ore ...
Details
In this research work, selective depression of pyrite in the flotation of a low-grade lead–zinc ore containing 31% pyrite was investigated in the absence and …
Details
Herein, a reagent scheme comprising aerofloat collectors and Zn 2+ and SO 3 2− depressants is developed for the flotation separation of galena from sphalerite-rich sulphide ore. The flotation results demonstrate that Zn 2+ and SO 3 2− provide a synergistic depression effect on sphalerite and the aerofloat collectors exhibit more …
Details
A lead concentrate with 65.42% Pb was produced with 77% recovery as a result of six stage flotation experiment carried out with 350 g/t KAX, 250 g/t Aero 407 and 4500 g/t Na 2 S and 98.7% of zinc remained in the tailings with 12.23% Zn content. As a result of gravity concentration followed by flotation, a lead concentrate with an average Pb ...
Details
The addition of zinc sulfate (2000 g/t) caused, after 8 min of flotation, a decrease in the pyrite recovery from 58% to 34%. The authors suggested selective …
Details
Zinc occupies a vital position in modern industrial production, and zinc metal is mainly extracted from marmatite or sphalerite.Marmatite or sphalerite is often associated with pyrite and pyrrhotite in natural polymetallic sulfide deposits. Therefore, how to well achieve the selective separation of marmatite or sphalerite from associated pyrite and …
Details
The advantages of the sequential circuits are that the levels of selectivity can be increased, particularly for copper and lead. With this process, copper was recovered first with MBS depression of lead, zinc and pyrite. Lead was recovered after conditioning, utilizing cyanide as the base depression scheme to control sphalerite and pyrite.
Details
The sulfidation mechanism of ZnO with pyrite was detailedly studied by thermodynamic calculation and roasting experiments. The sulfidation behaviors, phase transformations, microscopic morphology...
Details
Lead flotation tailings were used as the feed ore for the zinc flotation tests. The effects of different types of reagents on the zinc flotation indices were investigated, the flotation process is shown in Fig. 12 and the results of each reagent test are shown in Fig. 13. Download : Download high-res image (136KB) Download : Download full-size ...
Details
The Qixia orebody is a complex lead–zinc sulfide system with pyrite gangue and minor amounts of copper. In order to improve the flotation results, laboratory scale flotation testing of ore ...
Details
Pyrite depression in the flotation of copper ores is difficult due to the activation of Cu2+ ions on pyrite surface. In this study, the radical chain reaction involving the redox cycling of Cu(I/II) induced by sodium metabisulphite (MBS) was exploited to selectively depress the flotation of copper-activated pyrite at pH 8.0. Electrochemical …
Details
Various technological schemes [9, 10] of copper ore and copper-zinc ore processing, technological schemes of direct selective flotation and variants of collectively selective schemes have been developed and introduced for refractory pyrite-pyrrhotite-copper-zinc ores of Tarnersky, New Shemursky, Podolsky, Uzelginsky, Safyanovskoye, …
Details
Sodium cyanide. Sodium cyanide is mainly used to depress sphalerite in the first or lead-flotation stage in separating lead from zinc minerals. Its action on pyrite is nearly as strong as on sphalerite, but it does not affect galena unless a large excess is added or the contact time is too long. The effect of sodium cyanide is often intensified ...
Details
Collector type and pulp pH play an important role in the lead–zinc ore flotation process. In the current study, the effect of pulp pH and the collector type parameters on the galena and sphalerite flotation from a complex lead–zinc–iron ore was investigated. ... In both lead and zinc circuits, pyrite is the main sulphide gangue mineral ...
DetailsThis investigation was performed with samples from a lead–zinc sulphide deposit aiming at studying the influence of the dispersion degree of the particles in the pulp on lead and zinc flotation. Samples of ore and also of the minerals sphalerite, galena, pyrite, and dolomite were selected for the experiments. Nine types of dispersing agents ...
Details
Highly efficient pyrite depressants can be selectively adsorbed on the surface of pyrite to improve its hydrophilicity, thereby increasing the flotation separation …
Details
Fig. 2 shows that as pH increased from 9.0 to 10.5 and then to 11.5, the pyrite recovery obtained from the flotation of the ore with 5 % pyrite decreased steadily from 94.5 to 40.6 % and then to 10.3 %. Hence, a direct link between the decreased pyrite recovery in Fig. 2 and the increased Cu grade in Fig. 1 when pH increased could be …
Details
The polymetallic separation flowsheet of copper/lead bulk flotation - copper/lead separation - priority flotation zinc ... [Show full abstract] and pyrite from the bulk flotation tailings was used ...
Details
Collector type and pulp pH play an important role in the lead–zinc ore flotation process. In the current study, the effect of pulp pH and the collector type parameters on the galena and...
Details
Flotation is the most common and commercial technique applied to recover nonferrous oxide minerals and for zinc recovery, sulfidization with alkali metal sulfides, …
Details
In the rougher flotation stage, a lead concentrate with 17.29 % Pb and a zinc concentrate with 9.89 % Zn could be obtained by 76.71 % lead and 15.49 % zinc recoveries from the ore samples ...
Details
Grano et al. (1990) found that the flotation recovery of galena of Mount Isa Mines lead–zinc ore was increased by more than 20% with the addition of 200 g/t cyanide at Eh of 200 mV (SHE). Direct surface chemical interactions between cyanide and galena have been observed ( Prestidge et al., 1993a ).
Details
Flotation of Pyrite. Table of Contents. This paper is a record of the first of a series of tests on sulfide minerals to be made by the metallurgical department of the University of California. The purpose of …
Details
Flotation, which is based on the differences in hydrophobicity of minerals, is an effectively and commonly used method for separating sphalerite (ZnS) and galena (PbS) minerals from lead–zinc ore [4], [5]. The two minerals are generally closely associated with other gangue minerals in deposit, such as pyrite, quartz, calcite, dolomite, and ...
Details
Sulfide ore flotation is a complex electrochemical system. ... Understanding the mechanism of arsenian pyrite flotation is particularly important given that it is the principal gold carrier in the very important submicron gold ... Farjana et al. analysed the environmental burdens associated with gold–silver–lead–zinc–copper ...
Details
Influence of the Interaction between Sphalerite and Pyrite on the Copper Activation of Sphalerite. Bo Yang X. Tong Z. Lan Y. Cui Xian Xie. Materials Science, Chemistry. 2018. In this paper, the effect of pyrite on the activation of sphalerite was investigated by micro-flotation, copper adsorption experiments, X-ray photoelectron …
Details
The results demonstrate that the ore consists of 35 categories of minerals, assaying Cu 7.99%, Pb 9.39%, and Zn 1.96% in the forms of chalcopyrite, galena, and sphalerite, respectively, and silver ...
Details
Sofol is a well-known crusher and grinding mill manufacturer that offers equipment and solutions for customers from aggregates, mining and mineral grinding industry.
You can leave your message here, we'll send you an Email immediately.
Online ChatCopyright ©2000- 2024 Shanghai Sofol CompanySitemap
PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
GET QUOTE