Smelter slag treatment Treatment of converter slag m the 1970's and 980's was on a batch basis dunng periods of ore shortage. The batch processing of Copper Smelter converter slag began in 1976 et al, 978)_ Parallel processing of slag and ore commenced in 1992 and the flotation circuit was modified to slmpll$' parallel

This report reviews the available information on the industrial milling of converter and flash smelting slags and compares it with experimental data on the grinding and flotation of slags produced in the Noranda Process for continuous smelting and converting of copper concentrates.

copper slag recycling plants ... metal oxides and produces impure copper and an iron rich slag that. at a ... from reverberatory furnace slag by flotation May 12, 2013 · A process for the recovery of iron from copper slag which ... The 20 Mt reverberatory furnace slag dump at Nkana in Zambia ... banded iron ore flotation;

The treatment of smelting slag has attracted much attention nowadays. This study investigates the influence of Na 2 S, CuSO 4, and FeCl 3 on sulphidizing flotation of copper oxide. The results show that a proper Cu 2+ concentration can increase the sulphidizing effect of copper oxide, while Fe 3+ inhibits the sulphidizing effect. Further analysis shows that Cu 2+ ions can …

DOI: 10.1016/J.HYDROMET.2008.12.012 Corpus ID: 96545492. Biorecovery of copper from converter slags: Slags characterization and exploratory ferric leaching tests @article{Carranza2009BiorecoveryOC, title={Biorecovery of copper from converter slags: Slags characterization and exploratory ferric leaching tests}, author={F. Carranza and R. …

Sep 11, 2009· These oxide and sulfide phases of copper are mostly present within the slag phase and to some extent the slag is also embedded inside the oxide and sulfide phases. The recovery of copper values from the discarded slag has been explored by applying a flotation technique using conventional sodium isopropyl xanthate (SIX) as the collector.

Process for recovering copper from molten converter-type slags or other highly oxidized copper smelter slags containing 7-30 percent by weight of magnetite (Fe3O4). The magnetite in the slag is reduced with carbonaceous materials or other solid reductants. While the slag is mixed with a water cooled, metal-bladed mechanical stirrer, the reductant is reacted with the slag.

Feb 01, 2017· The leaching behaviors of primary copper (Cu) slags originating from Ausmelt, reverbatory, and converter furnaces operating under a single technological process were compared to a residual slag tailing obtained by slag re-processing via flotation and metal recovery. The EN 12457-2 leaching test, used for assessment of the hazardous properties ...

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.

Copper smelter slag and copper smelter slag flotation tailings were leached using sulphuric acid solutions, without or with the addition of either ferric sulphate or hydrogen peroxide. Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings. Hydrogen peroxide was determined to be the best lixiviant. Thus, copper and iron …

Leaching of copper and zinc from copper converter slag flotation tailings using H 2 SO 4 and biologically generated Fe 2 (SO 4) 3 [J]. Hydrometallurgy, 2012, 119/120: 40–46. DOI: 10.1016/j.hydromet.2012.03.001. [17] Maweja K, Mukongo T, Motombo I. Cleaning of a copper matte smelting slag from a water-jacket furnace by direct reduction of ...

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 …

Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.. As in all mining operations, the ore must usually be beneficiated (concentrated).

Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings. Hydrogen peroxide was determined to be the best lixiviant. Thus, copper and iron extractions were 63.4% and 48.6%, respectively, when leaching the slag with 3 M H2O2, after 120 minutes of reaction at room temperature.

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.

Reverbetory furnace slag Copper recovery Flotation Milling and grinding ABSTRACT 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 ...

All these three furnaces produce fayalite slag as a byproduct. The slags contain copper with the content ranging between 0.8 to 5% copper. The slags cannot be discarded due to the high content of copper and hence they are sent to a milling and flotation plant (Slag Mill Plant) for liberation and recovery of copper.

The leaching behaviors of primary copper (Cu) slags originating from Ausmelt, reverbatory, and converter furnaces operating under a single technological process were compared to a residual slag tailing obtained by slag re-processing via flotation and metal recovery. The EN 12457-2 leaching test, use …

The analysis of highly reduced slags has shown that it is possible to remove virtually all of the cobalt and nickel from the olivine in the slag. Nickel-copper converter slag 'B' - 3.2 MVA. Large-scale testwork on converter slag was conducted, during 1994, on a 3.2 MVA DC-arc furnace operating at a power level of 600 kW.

Pine oils, cresylic acid, and long-chain alcohols are used for the flotation of copper ores. The flotation concentrates are then dewatered by clarification and filtration, resulting in 10 to 15 percent water, ... iron sulfide. Because copper has a higher affinity for sulfur than oxygen, the copper in the slag (as ... at the converter mouth ...

Copper is extracted from its principal ore copper pyrites (CuFeS 2). The ore is concentrated by froth flotation process. The concentrated ore is roasted in a reverberatory furnace when the following reactions occur. 1. The volatiles like sulphur and arsenic escape as gases S + O 2-----> SO 2 4AS + 3O 2----->2AS 2 O 3 2.

Jan 13, 2021· the converter oxygen is introduced below the surface of the matte by means of an immersed probe. ... copper spinel, and copper ferrites. Flotation results of slags held at this temperature were inferior to those of untreated furnace slags. Microprobe examination of quenched slag, SN-17, table 10, shows that the major part of the copper, with ...

The treatment of two types of industrial metallurgical waste (copper converter slag and old flotation pyrite tailings) containing non-ferrous and precious metals were examined in the laboratory. Leaching of the slag containing 2.74% Cu (as digenite, bornite, and free metal) and 2.49% Zn (as a ferrite ZnFe2O4 and silicate) by an Fe3+-containing ...

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 …

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

discovered that heat made copper more malle-able. Casting and smelting of copper began around 4000-3500 B.C. (see figure 6-2). About 2500 B. C., copper was combined with tin to make bronze—an alloy that allowed stronger weapons and tools. Brass, an alloy of copper and zinc, probably was not developed until 300 A.D.

N2 - 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.

High efficiency copper flotation from Converter slags Shanghai Shibang Machinery Sales Co., Ltd. US $12500-$12800 / Set

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

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 ...

Tailings from flotation of copper slag are a second RCRA special waste. ... remaining iron combines with the silica to form converter slag, a RCRA special waste. After removing the slag, additional air or oxygen is blown in to oxidize the ... chemical reactions are required to convert copper into a water-soluble form. Copper is recovered from a ...

Copper Slag Flotation Plant In South Africa. In 1984 Newmont sold the Okiep Copper Company to Goldfields of South Africa More recently assets from the Ookiep Copper Company were acquired by Metorex in 1998 Reprocessing of the slag dump over a sevenyear period by flotation methods started in 2002. Send Email: [email protected]

Mar 01, 2021 The present study focuses on the experimental investigation of sulphatizing roasting of flotation tailings from copper slag processing using iron II and III sulfates followed by water leaching. The effect of temperature, duration of sulphatizing roasting, as well as the amount of iron sulfates on the conversion of zinc, copper ...