When cassiterite polymetallic sulfide ore is being ground in the ball mill, the contradiction between over grinding of cassiterite and under grinding of sulfide ore is inevitable due to their mechanical property differences. In this paper, a selective grinding characterization method is proposed to optimize the grinding of cassiterite polymetallic …

Production of Ni/Co from sulphide ores has its challenges that are fundamentally related to the mineralogy of this type of ores. 2.1 Mineralogy of Nickel-Copper Sulphide Ores. Studies on the geology and mineralogy of domestic nickel-copper sulphide ore deposits are reported in several sources in detail [16,17,18,19]. Although over 20 …

The traditional route for extracting copper from sulfide ores is smelting. Yet there is a growing case for leaching sulfides from lower grade ore bodies and especially for those ore bodies containing problematic elements like arsenic, which make smelting less economical. Smelting is … See more

DOI: 10.1016/J.MINENG.2018.07.011 Corpus ID: 105026727; Treatment and water reuse of lead-zinc sulphide ore mill wastewaters by high rate dissolved air flotation @article{Azevedo2018TreatmentAW, title={Treatment and water reuse of lead-zinc sulphide ore mill wastewaters by high rate dissolved air flotation}, author={A C Azevedo …

More studies and research efforts should be given to advance the processing methods of those sub-mill grade materials. Heap biooxidation showed promising results by Newmont's demonstration at Carlin operation in Nevada. The process showed 42–75% sulfide oxidation in the heap and gold recovery of 60–70% by milling …

Nowadays, due to fast global industrial progress and near diminution of high-grade ore reserves, there has been massive call to cost-effectively process the resources of low-grade ores and industrial effluents for metal extraction. However, conventional approaches cannot be used to process such resources due to high capital cost and …

RTS-3a is a sulphide ore mill tailings obtained from an unoxidized zone of the Waite Amulet tailings, north of Noranda, QC, Canada. The raw material was donated by Xstrata Copper. The raw material for RTS-3a was obtained from the same source as its predecessor, RTS-3.

For sulfidization of oxidized copper minerals, 100–200 g/t of sodium sulfide and less often sodium hydrosulfide are used at domestic and foreign ore mills. The results of studying the influence of humate reagent on waste rock depression are presented in [ …

Primary grinding – Lime is often added into the semi-autogenous (SAG) mill together with the ore feed and process water. Sulfide minerals are, by nature, acid to varying degrees causing the milled pulp to have a pH ranging from 4 to 8 depending on the sulphide and gangue mineral composition of the ore.

water usage. The crushed ore is transferred to a semiautogenous (SAG) mill or ball mill where the ore is further reduced in size. Water is added to the ball mill, in which a slurry that usually contains from ... the amount of water required to process copper sulfide ore through a conventional crush-grind-flotation-concentrate circuit ranges ...

Dry grinding the Pyhäsalmi sulphide ore resulted in higher flotation mass recoveries compared to wet grinding, but at the cost of selectivity. ... the results in Table 7 also show that in the case of Syväjärvi spodumene ore, most of the removed mill material is concentrated in the apatite concentrate during the flotation process, since there ...

To achieve optimum gold recovery from the certain sulfide ore body, the ore must be finely ground to achieve proper oxidation and mineral separation. The ore is separated into stockpiles after it has been mined. ... grinding train. The material is ground from 1½ inches to 80% passing 200 mesh (74 micron) in a double rotator-grinding mill, …

Sulfur mining takes place in countries such as Poland, Russia, Ukraine, United States and Turkmenistan. Ijen, a quiet but active volcano in East Java, Indonesia contains a one kilometer wide crater …

Complex sulphide ores represent considerable reserves and resources in base non ferrous metals, in precious metals, and in sulphur. Some of their essential characteristics, which …

Ore-Type = %Total Cu x %Sulfide Cu/% Oxide Cu The inaccuracies of sampling and assaying previously discussed must contribute a significant portion to the standard deviation. It also follows that mill operating procedures have an influence upon whether a point is above or below the curve.

Clarabelle Mill in Sudbury, Canada, a complex sulfide ore is treated to recover bulk concentrates of copper and nickel minerals. The plant treats an ore containing Cp (~4%), Pn (~4%) and Po (~20%).

Sulfide minerals are compounds in which sulfur is combined as an anion with a metal (or semi-metal) cation or cations. The definition is commonly widened to include minerals in which the anion is As or Sb, sometimes together with S, and to include Se and Te minerals. The sulfosalts are a special group of the sulfide minerals that have a …

The oxidizing roasting cinder—containing 16.9% Pb, 30.5% Zn, 10.3% Fe and 25.1% S—was obtained from a Pb-Zn sulfide ore in the Hanyuan area of China by a flotation-rotary kiln oxidizing ...

Treatment and water reuse of lead-zinc sulphide ore mill wastewaters by high rate dissolved air flotation. A. Azevedo., H.A. Oliveira., J. Rubio. Show more. Add …

This problem can be overcome by using depressants like car-boxymethylcellulose (CMC) and guargum deriva-. Table 2 Distribution of Ni and S in sulfide ores. copyrite. Figure 3 shows that 93% of chalcopyrite can be recovered in 12 min in the presence of SO2, but the co-recovery of 12% pentlandite and 23%. Ore source.

Sulphide ores that are mined for nickel and cobalt typically contain 1.5%–3% Ni and 0.05%–0.1% Co. Concentration, Smelting and Converting to Matte The sulphide ores …

The present work reports the results of pdot plant investigations on the influence of conventional and autogenous grinding methods in the flotation of a complex sulphide ore. The study includes the particle size and shape anal- yses and the pulp chemical measurements, pH, Eh, O2, concentration of - ions and anions, at several …

Proponents of sulfide-ore copper mining argue that the choice between this new type of mining and amenity-based development is a false choice for the Arrowhead region (Praxis Strategy Group, 2017). Those making this claim point to the continued existence of the taconite mining industry during the

The solution: powerful, high-resolution, high-capacity XRT ore sorting TOMRA's XRT sorters scan the individual rocks fed into the machine on a conveyor belt with overhead X …

This paper reviews: lime preparation factors that influence the reagent performance properties; mechanisms of lime interaction with collector chemicals and …

Complex Sulphide Ores: Processing Options. Chapter. pp 157–194. Cite this chapter. Download book PDF. G. Barbery. Part of the book series: NATO ASI Series ( …

Sulfide ore flotation is a complex electrochemical system. Electron transfer not only occurs between the sulfide minerals and flotation reagent molecules, but it also happens among different sulfide minerals. ... The aim is to remove as much as possible of the free gold contained in the circulating load of the grinding mill before it is ...

This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation. The fundamental aspects of the flotation of sulphide minerals both in the absence and presence of thiol collectors are discussed in relation to their crystal structure, surface chemistry and electrochemical characteristics.

These high separation efficiencies allowed reuse of water in the lead/zinc sulphide ore rougher flotation stage, avoiding the activation of ZnS flotation. ... The treated water is being reutilised in flotation mills, water services (dust suppression, machine and truck washing) and for local irrigation.

Mill tailings are a principal solid waste generated at sulfide mining operations. Sulfide ore minerals are generally concentrated by milling and froth flotation, which produces tailings containing gangue minerals and residual sulfides. Milling involves crushing and grinding to reduce particle size and liberate ore minerals from the rock matrix.