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In the industrial practice, pyrite is floated with xanthate as collector, whereas the commonest reagents for its depression in lead-zinc ore flotation are of cyanide type. However, cyanides are …
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Depression of pyrite in the flotation of high pyrite low-grade lead-zinc ore using microorganism instead of NaCN has been investigated (Mehrabani et al., 2011 (Mehrabani et al.,, 2010. However ...
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The aim is to remove separate concentrates in a complex ore. This is driven by smelting practice and concentrate contracts which penalise impurities in For example in a lead/zinc sulphide ore …
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He et al. (2006) indicated that the selective depression of pyrite in the flotation of chalcopyrite was due to the selective adsorption of zinc hydroxide on pyrite surface via …
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The more flotation collector you have on, the higher you will need to increase that pH for effective pyrite depression. You also need to insure your pyrite and copper minerals are well liberated for good chemical separation by pH. In froth flotation, depressing pyrite or any metal is impossible if minerals are locked.
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study. The mineralogical properties of the ore were fully investigated to aid in the choice of depressant and the pH environment to carry out flotation for the copper-zinc ore. 2. Experimental 2.1 Materials and reagents used. The ore samples used in the experiment were obtained from a mining company in Japan. The reagents
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To inhibit pyrite under low-alkaline conditions, this study intended to take Yiliang high‑sulfur lead–zinc sulfide ore as the object and Na 2 SO 3 and CaO as the combined depressant for pyrite. ... Role of starch and metabisuphite on pure pyrite and pyritic copper ore flotation [J] Physicochem Problems of Mineral Processing, 48 (2011), pp ...
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Iron ions can significantly hinder the flotation of zinc oxide ore when introduced into the slurry. ... An Eco-Friendly Depressant Derived from Grape Seed Extract (GSE) as Depressant for Flotation Separation of Pyrite from Chalcopyrite under Low-Alkalinity Conditions. Miner. Eng. 2024, 213, 108758. [Google Scholar]
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In this paper, formation of zinc sulfide species during roasting of ZnO with FeS 2 was investigated and its contribution on flotation was illustrated.
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For example, Li et al. 32 investigated the recovery of lead and zinc from low-grade lead-zinc oxide ore by sulfidation roasting and flotation process. The results showed 79.5% Pb and 88.2% Zn were ...
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In this study, Na 2 SO 3 and lime were used as pyrite depressants for the flotation separation of the lead and zinc ore. The influence of Na 2 SO 3 on pre-adsorbed EX was investigated through micro-flotation experiments, contact angle measurements, ultraviolet–visible spectroscopy (UV–Vis), and time of flight secondary ion mass spectrometry ...
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The pyrite recovery from the flotation of the copper ore with 25 % pyrite was finally reduced as the pH increased from 10.5 to 11.5. Nonetheless, the improved Cu concentrate grade was limited, only comparable to that produced from the flotation of the copper ore with 5 % pyrite at pH 9.0. To understand why the high-concentration pyrite could ...
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It is experimentally proved that selective oxidation of pyrite proceeds together with disintegration of lead and zinc along the interphase boundaries. The main products of such …
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In floating copper ores and lead-zinc ores, depression of the iron pyrite is important; but in floating gold-silver ores, the free gold and the iron pyrite are floated. ... The quantity consumed is 1/20 to 1/5 pound per ton of ore. For sulphide flotation various wood oils have been used, the most common being pine oil, particularly steam ...
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The current paper presents research aimed at replacing in flotation of copper pyrite ore, bearing gold and silver, the classical depressor lime with catholyte, i. e. with solution obtained during ...
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Some minerals like Iron pyrite will not float well in an alkaline flotation circuit. An alkaline solution is also slightly caustic, this will help clean the surface of the mineral. ... Its application is confined mainly to the flotation of lead and zinc ores and tailings. Some inorganic salts decompose it and it is therefore often necessary to ...
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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 presence of Acidithiobacillus ferrooxidans. Pyrite was significantly depressed with these bacteria using the optimum dosage of reagents.
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Inorganic depressants mainly include lime, zinc sulfate, sulfur dioxide, sulfurous acid, and its salts, sodium sulfide, water glass, phosphate, and cyanide, etc. (1) Lime. It can be used for the flotation of copper sulfide ore and lead-zinc …
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Galena–Pyrite Bulk Flotation. The particle size has a significant effect on the flotation behaviors of minerals; therefore, the effect of grinding fineness (−0.074 mm) on galena -pyrite bulk flotation was firstly investigated and the results are shown in Fig. 2a. As can be noted that the recovery of lead, zinc, and sulfur was increased simultaneously as the proportion of …
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To make certain that the material in each case was uniformly mixed and to determine the pyrite, copper, and zinc in each sample, a number of assay samples were taken during the subdivision into the 500-gm. portions, and analyzed. ... The percentage of pyrite or other sulfide mineral in an ore would, to a certain degree, affect the other factors ...
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Therefore, the industrial flotation tests were mainly conducted to investigate the effect of collector MA and depressant SHP/SS on the selective flotation of zinc oxide ore. The feed ore of zinc oxide ore flotation process was the underflow of the hydrocyclones, and the flowsheet of industrial tests of zinc oxide ore flotation is shown in Fig. 8.
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Marmatite (Zn 1−x Fe x S), which is an essential resource for zinc metal production now, is the result that some zinc sites in the sphalerite (ZnS) lattice are replaced by iron atoms, so both have similar flotation behaviors or characteristics [1], [23].In general, when sphalerite contains more than 6% iron, it is called marmatite [23].Currently, the separation of marmatite …
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The demand for sulfuric acid initiated by the booming uranium industry during the late 1960s provided the catalyst for the installation of pyrite flotation plants on numerous gold mines in South Africa (Bushell, 1970, Broekman et al., 1987).After roasting the pyrite flotation concentrate to generate sulfur dioxide for the sulfuric acid plant, the remaining calcine was …
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We investigated the replacement of NaCN with Acidithiobacillus ferrooxidans, in the flotation of a low-grade lead–zinc ore containing high amounts of pyrite.A. ferrooxidans were adapted to original ore, and its growth curves were monitored before and after adaptation. Because of its characteristics, the addition of original ore caused the bacterial cell count to …
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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 presence of Acidithiobacillus ...
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The optimum ratio of pyrite flotation with combined collector is 3, and the recovery rate of pyrite flotation is 37%, which is higher than that of pyrite flotation recovery of 30.5% when ...
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This 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.
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Approximately 90% of the achieved pyrite flotation recovery is associated with true flotation, and the highest entrainment is measured for the OD1-Leached ore ... Influence of electrochemical environment on the flotation behaviour of Mt. Isa copper and lead-zinc ore. International Journal of Mineral Processing 30 (1):69–97. doi:10. ...
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Real ore sample flotation separation tests showed that the mixed depressant can efficiently depress pyrite from galena-pyrite mixed concentrate. The obtained galena concentrate had a Pb recovery ...
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Pyrite in complex metallic ore is a widely distributed sulfide on earth, commonly associated with copper, lead, and zinc sulfides, as well as gold and silver [1,2].The production of separate concentrates from ores containing economic amounts of copper, lead, and zinc is complicated [], especially for ores with high pyrite content [4,5,6,7].Due to copper, lead, and …
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The commonest depressing reagents are lime, sodium cyanide, and zinc sulphate. Lime is extensively used to prevent pyrite from entering the concentrate of other minerals particularly copper and zinc sulphides. Its action …
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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 ...
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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...
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Figure 5 - Zinc circuit laboratory flotation performance of different ore types. Zinc metallurgical performance (Figure 5) varies over a smaller band, due to low zinc losses in the lead circuit and the ability to be more selective against pyrite. The methods used in the laboratory have shown good agreement with plant performance and provide
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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) and then mixed to ...
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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 presence of …
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