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
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.
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
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
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.
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 ...
2015-12-27 · 1990). Pyro-hydrometallurgical methods are also used for the treatment of copper converter flue dusts and copper refining slags (taken from Sarkuysan A.S., Turkey) (Geveci et al., 2000; Yıldız et al., 2000). Alkali roast-acid leach process is reported in the literature for recovering metals from converter slag (Das et al., 1999).
2012-2-7 · Nickel-copper converter slag ''A''- 100 kVA and 200 kVA. Using converter slag from a nickel-copper plant, tests were carried out, in 1990, on a 100 kVA furnace (operated at 30 kW) and on a 200 kVA furnace (operated at 85 kW), at low additions of reductant (in order to minimize the reduction of iron).
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
copper flotation from converter slags: 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.
The article discusses the issues of processing slag of copper production using devices that model ideal mixing. It has been shown that the use of this type of apparatus increases the efficiency of physical and chemical processes and significantly reduces the copper content in dump slags. It has been found that the process of reduction of ferric iron oxide by the clinker in the initial period ...
2020-4-20 · extract copper from free-milling crystallized copper slag aggregates [1, 2]. Flotation copper ground to 0.074 mm class minutes slag is carried out on the circulating water in an alkaline medium created lime . Extracting copper flotation of refractory bad- devitrified lag does not exceed 45-60% on average from the dump and 76% of the converter
2017-11-27 · Closed-circuit flotation tests of the original and modified slags were conducted, and the results show that the copper recovery increased obviously from 69.15% to 73.38%, and the copper grade of concentrates was elevated slightly from 20.24% to 21.69%, further confirming that the industrial tests of the modification process were successful.
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
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.
In this study, iron selectivity behaviour of copper smelter slag (CSS) flotation tailings (38.08% Fe, 0.35% Cu, 4.48% Zn, 0.16% Co, 0.37% S) having fayalite and magnetite as major minerals was investigated with hematitization baking and base metals leaching methods using mineralogical and chemical analyses. For selectivity of iron, it was baked at temperatures of 650-690-700-710-730°C.
Biorecovery of copper from converter slags: Slags characterization and exploratory ferric leaching tests. Francisco Carranza. Related Papers. Copper Metallurgical Slags – Current Knowledge And Fate: A Review. By Jakub Kierczak and Anna Potysz. Recovery of metal values from copper smelter slags by roasting with pyrite.
2015-8-31 · Almost all copper slags contain a considerable amount of Cu (0.5 - 3.7%) close to or even higher than copper ores. A number of methods for metal recovery from copper slag were reported These methods can be classified into three categories, flotation, leaching
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 ...
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 …
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.
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 ...
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 ...
2021-3-22 · Recovery of Copper and Cobalt from Converter Slags via Reduction–Sulfurization Smelting Using Spent Pot Lining as the Reductant ACS Sustainable Chemistry & Engineering ( IF 8.198) Pub Date : 2021-03-12, DOI: 10.1021/acssuschemeng.1c00444