Pyrite is one of the major diluents of copper, lead and zinc concentrates. One explanation for the high flotation of pyrite in alkaline pH conditions is its inadvertent activation by copper either dissolved from copper minerals present in the ore or added in the zinc circuit to activate the flotation of sphalerite Bushell and Krauss, 1962.Some recent studies of copper ore flotation to separate chalcopyrite from pyrite with the evaluation of the effect of different important parameters on the process efficiency. Researchers have investigated (Martin et al., 1989, Leppinen, 1990, Boulton et al., 2001, Peng et al.,.
The flotation separation is difficult when lead, cop-per and zinc need to justify concentration into three perfect separate products. Flotation problems in general are due to geological origin hence, the ore have controlling influence on flotation practice. specifically, the resultant copper or lead ions.
Low zinc (Zn) ore was fed to the plant. Marketable copper concentrate at 91-95 recovery was produced utilizing a high-pH bulk sulphide rougher flotation and 2 cleaning stages. Because of increased levels of Zn of the ore body, a Cu Zn separation circuit was initiated in early 2010 following an intensive laboratory test work program.
Pionera F-250 improved the grade of lead, zinc and silver concentrates by pyrite depression in a plant trial. At the Endeavor mine in Cobar, NSW, zinc and lead with silver concentrates are produced. Reduced production volumes towards end-of-life made traditional ore blending techniques unavailable to control the amount of pyrite in the final.
Oct 02, 2016 As an example of the beneficial effect of copper sulfate in the activation of zinc sphalerite toward flotation, the series of results shown in Fig. 1 is of interest.These represent rougher tests on a sample of heavy pyritic ore. The particular sample in question contained about 5.6 zinc as marmatite and was treated in a circuit made alkaline with lime, using pine oil as a frother and.
Today, about 400 million tonnes of sulphide ore is treated annually by flotation process worldwide. M s Hindustan Zinc Ltd. (HZL), a leading lead-zinc mining and smelting company in India has experienced a spectacular growth from the time of its inception. Starting from a single 500 MT per day lead-zinc mine at Zawar, HZL has expanded its mining.
Jun 12, 2017 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 flotation laboratory cell in the presence and.
Oct 01, 2020 Therefore, the serial flow flotation process is adopted in the design of the concentrator. Yunfu Pyrite Mine is a large-scale open-pit mining and beneficiation joint enterprise with a designed annual output of 3 million tons of raw ore, of which 1.5 million tons of lean ore are selected. And Ruiguang with a sulfur grade of 36.75 can be crushed.
Apr 14, 2016 The Problem with separating Copper from Zinc by flotation. The treatment of heavy sulphide ores of copper containing zinc and pyrite is often extremely difficult particularly if soluble copper and sulphates are present. This is usually the case in ore deposits near the surface or in tropical countries where the annual rainfall is quite high.
Flotation circuit. They have a common theme in that pyrite forms the principal floatable concentrate diluent. Hellyer ore contains finely disseminated chalcopyrite, sphalerite, galena, and tetrahedrite. The flotation plant design was based on extensive benchscale testwork (including locked.
Most of the pyrite is framboidal to colloform, and sometimes occurs in aggregates, but may also occur as fine (20-50 pm) subhedral euhedral crystals. Typical grades of the clastic ore are 3 copper and 13 zinc. The ore is not only fine-grained, but also contains abundant fine mineral intergrowths and inclusions, and requires fine grinding.
Bench‐scale flotation tests were done with a chalcopyrite, sphalerite and pyrite‐containing ore from Timmins, Canada using p‐nonylcupferron as collector. Effects of pH and the need for adding copper sulphate for zinc activation and lime as pyrite‐depressant were studied.
According to the refractory lead-zinc ore properties with high pyrite, the experimental studies were conducted on floatation reagent conditions and closed circuit tests for comprehensive recovering of all types useful minerals. In comparison to the test results of different process flowsheets and different types of flotation reagents, adopting prior flotation lead (Pb)—Zn selective flotation.
The zinc concentrate is actually the tails from this bulk separation step. The flotation tailing is the zinc concentrate. If the silver is associated with the galena, the silver reports to the lead concentrate. While pyrite is fairly easy to depress with lime, pyrrhotite is difficult to depress.
