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Copper, lead, zinc and nickel sulfide concentrates—Determination of arsenic Part 2: Acid digestion and inductively coupled plasma atomic emission spectrometric method AS ISO 13547.2:2015 This is a free 5 page sample. Access the full version online.
The concentrate contained 6.2% of copper, 7.3% of zinc, and 1.7% of arsenic. Pyrite, chalcopyrite, tennantite, and sphalerite were the main minerals. Bioleaching was performed using mixed culture of acidophilic microorganisms oxidizing ferrous iron and sulfur compounds (Sulfobacillus thermosulfidooxidans SH-1, Acidithiobacillus caldus MBC-1, and Acidiplasma sp. MBA-1).
Request PDF | On Aug 1, 2018, Aleksandr G. Bulaev and others published Bioleaching of arsenic-bearing sulfide copper–zinc concentrate | Find, read and …
more than 2 million tons of polymetallic concentrates per year and produces about 30,000 t/a copper smelting dust with average content of 7.5% As. It also produces about 8000 t/a arsenic sulfide residues (dry basis, 22% As). The recovery of the two kinds of arsenic hazardous wastes is of greatsignificance to Fangyuan. Copper smelting dust
Zinc sulfide concentrate composed of mainly marmatite, arsenopyrite was subjected to magnetic separation in order to remove arsenic included in the ore. The stage separation was conducted at 2, 000 Oe, 5, 000 Oe and 10, 000 Oe in magnetic field intensity under dry atmospheric condition using an isodynamic separator. Arsenic compounds such as arsenopyrite are concentrated in the non …
Neves-Corvo is a mainly copper and zinc mine producing copper, zinc and lead concentrates. The operation is owned and operated by Lundin Mining's Portuguese subsidiary Somincor. Lundin Mining acquired Neves-Corvo as part of the company's 2006 merger with EuroZinc Mining. m 2017 NI 43-101 Technical Report. Mine Copper, Zinc, Lead and Silver.
Copper lead zinc and nickel sulfide concentrates . emission spectrometric (ICP-AES) method for the determination of the mass fraction of arsenic in copper lead zinc and nickel sulfide concentrates This Standard is identical with and has been reproduced from ISO 13547-2 2014 Copper lead zinc and nickel sulfide concentrates—Determination of arsenic Part 2 Acid digestion and inductively
Other less common metals sold as concentrates include antimony, arsenic, bismuth, cadmium, cerium, cobalt, gallium, indium, mercury, platinum, tellurium, tantalum, titanium and vanadium. By way of example, a copper concentrate could include chalcopyrite (CuFeS2), containing 34.6% copper, possibly another sulphide such as pyrite (FeS2) and other waste (or gangue) minerals.
Zinc smelting is the process of converting zinc concentrates (ores that contain zinc) into pure zinc. Zinc smelting has historically been more difficult than the smelting of other metals, e.g. iron, because in contrast, zinc has a low boiling point.At temperatures typically used for smelting metals, zinc is a gas that will escape from a furnace with the flue gas and be lost, unless specific ...
The presence of arsenic in zinc sulphide concentrates is particularly harmful, because it creates problems in zinc electrolysis. The main source of arsenic in non-ferrous metallurgy is arsenopyrite (FeAsS). In oxidative roasting of zinc concentrates, FeAsS oxidizes to arsenic …
arsenic-bearing copper concentrates has been previously discussed. ... Finally, selective zinc-only leaching test results from copper concentrate are presented. ... the mercury sulphide mineral is so insoluble and because much of the mercury is tied up within the .
01-11-2014· Arsenic sulphide mineralogy in copper deposits has been reviewed by Long et al. (2012). A range of arsenic minerals including arsenopyrite, tetrahedrite, tennantite and enargite occur in various copper deposits in the world. Rejection of arsenic minerals in sulphide flotation has been reviewed by Ma and Bruckard, 2009, Plackowski et al., 2012.
arsenic, bismuth, cadmium, mercury, lead, and antimony, are present in some deposits, particularly those associated ... Primary sulfide minerals of most zinc-lead-copper deposits are fine grained and intergrown, whereas those of most copper-zinc deposits are coarser grained (Franklin, 1993).
In industrial-scale experiment,zinc sulfide concentrate was roasted in fluidized bed furnace in low oxidizing atmospheres and temperature,the waste gas was oxidized sufficiently after second combustion,so As and S entranced into waste gas completely and recovered after dust collecting.The results show that arsenic slag is purified to 98% in the third combustion,and the recovery of As2O3 is ...
Arsenic Zinc Sulfide Concentrate. The maximum rate of arsenic dissolution in the concentrate was found using small surface area of particle exposure, low pulp density, injecting air and adding 9 k medium to the system.The effect of addition of ferric chloride during the arsenic bioleaching resulted in a decrease of the solubilized arsenic.
Arsenic exists in oxidation states of −3, 0, 3 and 5. It is widely distributed throughout Earth's crust, most often as arsenic sulfide or as metal arsenates and arsenides. In water, it is most likely to be present as arsenate, with an oxidation state of 5, if the water is oxygenated. However, under reducing conditions (<200 mV), it is more
Pyrite, Iron Sulphide FeS 2 1309-36-0 25 Sphalerite, Zinc Sulphide ZnS 12169-28-7 15 – 20 Silica Quartz SiO 2 238-878-4 14808-60-7 20 Chalcopyrite, Copper Sulphide CuFeS 2 603-441-2 1308-56-1 15 Galena, Lead Sulphide PbS 51682-73-6 5 – 7 Enargite, Copper-Arsenic Sulphide Cu 3AsS 4 5 Barite BaSO 4 13462-86-7 5 – 7 Water H
19-07-2020· Understanding Stress Response to High-Arsenic Gold-Bearing Sulfide Concentrate in Extremely Metal-Resistant Acidophile Sulfobacillus thermotolerans . Sign in | Create an account. https://orcid.org ...
01-10-2012· A high arsenic–copper flotation concentrate was produced that contained 10.5% arsenic, contained within enargite and tennantite. Roasting under oxygen deficient conditions produced a virtually arsenic free copper sulphide and an arsenic sulphide by …
Alkaline Sulfide Hydrometallurgy Hydrometallurgical methods can be employed for treatment of arsenic containing materials, concentrates and ores as well as complex ones containing any number of ...
of arsenic in copper, lead, zinc, and nickel sulfide concentrates. This Standard is identical with, and has been reproduced from ISO 13547-1:2014, Copper, lead, zinc and nickel sulfide concentrates—Determination of arsenic, Part 1: Iron hydroxide concentration and inductively coupled plasma atomic emission spectrometric method.
Arsenic trioxide is only slightly soluble in water; in sodium hydroxide it forms arsenite and with concentrated hydrochloric acid it forms arsenic trichloride. Sodium arsenite and sodium arsenate are highly soluble in water. Interchanges of valence state may occur in aqueous solutions, depending on
Copper, lead, zinc and nickel sulfide concentrates — Determination of arsenic — Part 1: Iron hydroxide concentration and inductively coupled plasma atomic emission spectrometric method Concentrés sulfurés de cuivre, de plomb et de zinc — Dosage de l'arsenic — Partie 1: Méthode par digestion acide, co-précipitation avec le fer et
A mixture of zinc, stannous chloride, potassium iodide and hydrochloric acid reduces the arsenic into arsine gas in a specially equipped distillation apparatus. The arsine goes through a scrubber that uses a cotton ball soaked with lead acetate for sulfide removal. Then the arsine goes into an absorber tube that contains a solution of silver