major steps in the process of mining gold

major steps in the process of mining gold

How to Recover Copper from Slag by Flotation

2021-2-3  The bulk of the world’s output of copper is produced by smelting copper sulfide flotation concentrates in reverberatory furnaces, followed by oxidizing the matte to blister copper in a converter. Slags produced in the converter are too high in copper to be sent to the dump and are returned to the reverberatory furnace for recovery of most of ...

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Leaching of copper and zinc from copper converter slag ...

2012-5-1  Over 1.5 Mt of dumped slags, including converter slag flotation tailings, which contain up to 6000 t copper and 60,000 t zinc, are produced yearly by the copper-smelting plants of the Ural Mining and Metallurgical Company (UMMC) alone. Significant areas required for stockpiling of the slags and the products of their processing are unavailable ...

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2-Recovery of Copper and Cobalt from Converter Slag

2018-8-20  Key words: Converter slag, flotation, copper, cobalt, sulphurization. 1. Introduction Copper slag is produced in large amounts in seven copper smelter plants in Chile, and it is estimated that around 4 million tons of slag are disposed every year and another 40 to 45 million tons are historically cumulated [1].

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copper flotation from converter slags in italy

2020-9-27  Ebook Recovery of Copper From Converter Slags by Flotation . Copper smelting slags in the Bardeskan district with work index of kwhst were grinded for 65 minutes to reach an acceptable degree of freedom for the flotation tests with particle size of 80 smaller than 70 It should be mentioned that milling and flotation of converter slags to ...

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PYROMETALLURGICAL RECOVERY OF COPPER VALUES

In recent years, there has been a move toward recovering copper from converter-type slags by milling and flotation. The term "converter-type slag" is intended to represent a slag that contains a high amount of magnetite (Fe 3 O 4) and a low amount of silica.

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Enhancing the flotation recovery of copper minerals in ...

2020-1-1  Namibia Custom Smelters (NCS) process a range of copper concentrates in their three furnaces, namely; top submerged lance, copper converter and reverberatory furnaces, in order to produce mattes and fayalitic slags. The copper content of the slags range between 0.8 to 5 wt. % and this is considered too high for disposal to the environment.

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Processing Converter Slags with Total Utilization of All ...

Laboratory flotation tests of slow cooled converter slag have showed that 92.5% copper recovery at the copper cut-off grade of 24-25% can be achieved by using a 50:50 ratio of DSP330 and SIBX ...

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RECOVERY OF COPPER FROM SMELTING SLAG BY

2015-11-11  slags on an industrial scale: (i) recycling of the converter slag to the smelting furnace, (ii) cleaning of smelting and/or converter slags in electric furnaces and (iii) flotation. Metallic copper and sulphide copper present in these slags can be floated very

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Copper in solidified copper smelter slags

2018-9-8  Converter slags from slag blowing stages may contain copper few per cent up ot 20 w-%.t Smelter slags from high grade matte smel ting 1,2,3,4,5 contain as a rule consider ably more copper than could be expected on the base of results of equil ibrium measurements 6,7,8,9,10 (Fig. 1). Solubility of copper and ulpshur in iron silicate slags is

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RECOVERY OF COPPER FROM COPPER SLAG AND

2014-9-8  Recovery of copper from copper slag and copper slag flotation tailings 75by oxidative leaching Table 1. Chemical compositions of the copper smelter slag and the slag flotation tailings Constituent Content (wt.%) Copper Slag Slag Flotation Tailings Cu – total 0.97 0.59 Cu – oxides 0.15 0.06 Cu – sulphides 0.82 0.53 SiO 2 33.75 34.62 Al 2 O

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Enhancing the flotation recovery of copper minerals in ...

2020-3-25  submerged lance, copper converter and reverberatory furnaces, in order to produce mattes and fayalitic slags. The copper content of the slags range between 0.8 to 5 wt. % and this is considered too high for disposal to the environment. Currently, the slags are sent to a milling and flotation plant for liberation and recovery of residual copper.

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Flotation of copper sulphide from copper smelter slag ...

2015-10-10  Various methods for copper recovery from the copper slags were reported with attention given to beneficiation, pyrometallurgical, hydrometallurgical, and mixed pyro and hydrometallurgical processes. However, among the various processing method, physical separation by froth flotation is widely applied and some researchers considered flotation as ...

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PYROMETALLURGICAL RECOVERY OF COPPER VALUES

In recent years, there has been a move toward recovering copper from converter-type slags by milling and flotation. The term "converter-type slag" is intended to represent a slag that contains a high amount of magnetite (Fe 3 O 4) and a low amount of silica.

Get Price

RECOVERY OF COPPER FROM SMELTING SLAG BY

2015-11-11  slags on an industrial scale: (i) recycling of the converter slag to the smelting furnace, (ii) cleaning of smelting and/or converter slags in electric furnaces and (iii) flotation. Metallic copper and sulphide copper present in these slags can be floated very

Get Price

Copper in solidified copper smelter slags

2018-9-8  Converter slags from slag blowing stages may contain copper few per cent up ot 20 w-%.t Smelter slags from high grade matte smel ting 1,2,3,4,5 contain as a rule consider ably more copper than could be expected on the base of results of equil ibrium measurements 6,7,8,9,10 (Fig. 1). Solubility of copper and ulpshur in iron silicate slags is

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Optimization of the flotation of copper smelter slags

2020-9-7  the recovery of copper minerals in copper smelter slags by means of froth flotation. Most of the copper minerals present in the Namibia Custom Smelters’ slags are free sulphide minerals, however a certain proportion is copper minerals that cannot be floated easily because they could

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Recovery of Copper from the Slag of Khatoonabad Flash ...

2013-6-5  Similarly, Somerville et al. carried out the single-stage flotation process (rougher) on the converter slag and achieved 90 % copper recovery. Gradual cooling impact on the slag from molten to solid state was studied by Sarrafi et al. . According to the results obtained, by gradual cooling of the slag from 1,300 to 900 °C, copper recovery was ...

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RECOVERY OF COPPER FROM COPPER SLAG AND

2014-9-8  Recovery of copper from copper slag and copper slag flotation tailings 75by oxidative leaching Table 1. Chemical compositions of the copper smelter slag and the slag flotation tailings Constituent Content (wt.%) Copper Slag Slag Flotation Tailings Cu – total 0.97 0.59 Cu – oxides 0.15 0.06 Cu – sulphides 0.82 0.53 SiO 2 33.75 34.62 Al 2 O

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Processing of copper converter slag for metals

iron in lattices. Obviously, unlike copper, the cobalt in the slag is not amenable to flotation, and chemical decomposi-tion of the slag is required for its recovery. Mineralogical and chemical changes during slag processing In the slag processing method proposed in this study, the copper converter slag was digested with strong sulphuric acid

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Factors affecting nickel recovery from slags produced ...

2009-8-26  the classifier. Samples of flotation feed, flotation concentrates and tailings were also collected early in 2000, and again in 2003, in order to identify recovery problems at the slag plant. ANDREWS, L. Factors affecting nickel recovery from slags.produced during platinum smelting VII International Conference on Molten Slags Fluxes and

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Converter Slag Flotation—its Effect on Copper ...

The Naoshima Smelter has employed the convert er slag flotation method in order to increase reverberatory smelting capacity instead of returning slag to the reverberatory furnace. As the result, we could point out the following advantages; 1) Copper anode produced from copper concentrate was increased 25%, from 3,000T/M to 3,800T/M.

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US4022686A - Flotation process for copper ores and

A flotation process in which copper ores or copper converter slags are ground and firstly have added thereto benzotriazole or alkyl benzotriazole as an activator and secondly one or more collectors selected from the group consisting of xanthates, dithiophosphates, thiocarbamate esters, dithiocarbamates, mercaptans and dixanthogens and further, if desired, a promoter such as kerosene, light oil ...

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Copper in solidified copper smelter slags

2018-9-8  Converter slags from slag blowing stages may contain copper few per cent up ot 20 w-%.t Smelter slags from high grade matte smel ting 1,2,3,4,5 contain as a rule consider ably more copper than could be expected on the base of results of equil ibrium measurements 6,7,8,9,10 (Fig. 1). Solubility of copper and ulpshur in iron silicate slags is

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Recovery of cobalt, nickel, and copper from slags, using ...

2012-2-7  This technology is applicable to the recovery of nickel, cobalt, copper, and platinum group metals from furnace or converter slags emanating from copper or nickel smelters treating sulphide concentrates. Pilot-plant testwork at Mintek has demonstrated recoveries of 98% for nickel and over 80% for cobalt, at power levels of up to 600 kW.

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Optimization of the flotation of copper smelter slags

2020-9-7  the recovery of copper minerals in copper smelter slags by means of froth flotation. Most of the copper minerals present in the Namibia Custom Smelters’ slags are free sulphide minerals, however a certain proportion is copper minerals that cannot be floated easily because they could

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Processing of copper converter slag for metals

iron in lattices. Obviously, unlike copper, the cobalt in the slag is not amenable to flotation, and chemical decomposi-tion of the slag is required for its recovery. Mineralogical and chemical changes during slag processing In the slag processing method proposed in this study, the copper converter slag was digested with strong sulphuric acid

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Dore slag treatment - Noranda Mines Limited

The copper recovery from the converter slags will largely depend on this initial cooling treatment. The dore slag treated in accordance with the present invention is, of course, entirely different from converter slags. It essentially consists of silica-lead slags with very little iron in them and with no magnetite.

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Enhancing the flotation recovery of copper minerals in ...

The copper content of the slags range between 0.8 to 5 wt. % and this is considered too high for disposal to the environment. Currently, the slags are sent to a milling and flotation plant for liberation and recovery of residual copper. The copper recoveries realized in the plant are much lower than expected and it has been postulated that some ...

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Processing of Waste Copper Converter Slag Using Organic ...

An innovative, economical, and environmentally sound hydrometallurgical process has been proposed for recovering Cu, Ni, and Co from copper-rich converter slag by organic acids. In the leaching experiments, the effects of organic acid concentrations, pulp density, temperature, and time were investigated. Optimum recovery of 99.1% Cu, 89.2% Ni, 94% Co, and 99.2% Fe was achieved in 9ndash;10 h ...

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Factors affecting nickel recovery from slags produced ...

2009-8-26  the classifier. Samples of flotation feed, flotation concentrates and tailings were also collected early in 2000, and again in 2003, in order to identify recovery problems at the slag plant. ANDREWS, L. Factors affecting nickel recovery from slags.produced during platinum smelting VII International Conference on Molten Slags Fluxes and

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