Abstract. The flotation testing of sulphide ores for flowsheet development, or for the improvement of existing flowsheets in operations, has been practiced for a …

With this simple flowsheet, you will recover silver and/or gold into a bullion bar. The gravity recovery components of this circuit can easily be removed in cases where laboratory testing has revealed there are no GRG …

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.

The recovery of silver minerals occurring in a lead-zinc sulfide ore is efficiently accomplished using the above flowsheet. The process consists of selective flotation to produce a mixed silver-lead concentrate for maximum smelter return and a separate zinc concentrate. Over-grinding of silver minerals is detrimental to efficient …

Complex and non-sulfide lead–zinc ores are difficult to concentrate, but the growing demand for lead and zinc metals necessitated their beneficiation. Froth flotation is practically the most effective method in their beneficiation when optimum flotation conditions are attained. The aim of the current study is to use process mineralogy as a tool to …

A smelting workaround. 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 …

The results of the mass titration of dry and wet ground Syväjärvi spodumene ore are shown in Fig. 22 and similarly the results from the Pyhäsalmi sulphide ore mass titrations are shown in Fig. 23.

Figure 1 shows an example of the most common porphyry copper ore type beneficiation flowsheet. Porphyry ores, although generally contain small amount of copper below 1%, belong to easy-to-float ...

complex sulphide ores have been presented by Konigsman (15) and Fahlstrom et al (16). The demonstration of the validity of computer modelling techniques to optimise circuits …

A variety of ores and commodities exists, and the flotation flowsheet and operating conditions vary significantly between ore systems, but every process relies on …

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%).

These consist of zinc and iron sulfide depressants which are added to the grind and a collector and frother for the lead-copper sulfides. The zinc is floated with additional quantities of a collector and frother …

Testwork was undertaken to develop a flowsheet that would maximise gold recovery from an ore containing 3 g/t Au and high levels of arsenic. Treatment of the sulphide ore …

The ore contains 1.1% sulfide sulfur, 1.1% organic carbon and 2.9% carbonate carbon on average. The limestone introduced to the process with the ore reacts with the SO2 forming gypsum. At a reactor temperature between 680° C and 720° C, SO2 concentrations of about 100 vppm were measured in the off-gas.

The flowsheet comprises fine crushing and agglomeration with sulphuric acid, followed by two-stage heap bioleaching with air sparging. An on-off pad system is used for primary leaching and a multi-lift permanent pad ... Leaching of A Primary Nickel-Cobalt Sulphide Ore, ALTA 2002 Conference, May 2002, Perth, Australia. 5. Neale, J et al, The ...

sulfide ores due to the good floatability of most sul-fides. A flotation flowsheet usually includes a rougher stage and several recleaner stages. For porphyry cop-per sulfide ores, the Palabora processing plant (South Africa), producing 150000 t of ore per day, uses a flowsheet which consists of rougher and scavenger flo-

The principal sulphide ore minerals chalcopyrite (CuFeS 2), bornite (Cu 5 FeS 4) ... The first generic flowsheet, in which the mined ore is treated hydrometallurgically to produce copper cathode and cobalt hydroxide, is currently the most common configuration used for cobalt. It is used at Ruashi, Metalkol, Mutanda, Tenke Fungurumi …

Download scientific diagram | A typical flowsheet for processing refractory gold ore (Sulphidic Gold Ore). Numbers represent unit operations and sample points in red.

In this method, 34% of the ore could be obtained as a by-product. 77.77 g/t gold containing sulphide pre-concentrates can be obtained with a 70.05 % gold recovery. Simplified flowsheet of clay ...

A recovery of 85.1 % with 44.1 g/t gold grade was achieved with flotation tests. A combination of Knelson and flotation circuit brought the recovery to 92.2 %. The optimum flotation results and ...

Through appropriate use of Gy's sampling and subsampling models, and systematic flowsheet development using modern Process Mineralogy, an optimised Milestone Flowsheet was developed, delivering a final concentrate grade of 32.8% Cu at 85.4% recovery with hypogene ore, and 45.1% Cu grade at a recovery of 83.4% for …

Nickel sulfide ores are broadly classified into the following categories: massive sulfide ore, matrix ore (also termed net-textured ore) and disseminated sulfide …

A schematic of the proposed flowsheet is depicted in Figure 1. which inhibits the separation of minerals ... low-grade nickel sulfide ore with high-alkaline gangue has replaced high-grade nickel ...

Flowsheet of closed-circuit lab-scale tests of the studied sample. ... The results indicate that 43.37% Pb and 66.01% Ag were recovered by the flotation of lead sulfide ore, and the average grades of Pb, Zn and Ag in the Pb concentrate were 52.73%, 10.17% and 7562.37 g/t, respectively. Furthermore, total 84.42% Zn was recovered by …

The Macraes case study is an example of flowsheet development through continuous improvement by evaluation, trialing and the use of a number of processes to address both the preg-robbing and refractory sulfide fractions of the ore. 2. Sansu Project, Ashanti Goldfields Corporation (Ghana)

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 …

Multotec specialises in copper (sulphide) beneficiation equipment with over 50 years of global experience and leading technology. Our team of metallurgists and engineers will partner with you to customise your equipment, helping your process run more efficiently while lowering your overall cost per ton. Click on the product name to find out ...

A Flowsheet to recovery gold from sulfide ores. There are many arrangements and combinations using flotation in conjunction with …

sulphide rich concentrate can result in the economic treatment of an extremely complex ore that may otherwise require a treatment route similar to a truly refractory ore. Fig 2: Gold Ore – Recovery Yield Curve Fig 3: Gold Ore – Grade Yield Curve Gold Grade Yield Curve 0 100 200 300 400 500 600 700 800 0% 20% 40% 60% 80% Yield Grade (ppm)

At the 75 lm primary grind, Cu sulphide liberation was reported at 62.5% for the hypogene ore and 53.1% for the supergene ore (Lotter et al., 2013). A mixed reagent suite was selected and refined ...