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Copper slag is a waste during pyrometallurgical production of copper from copper sulfide concentrates. Generally, 2.0–3.0 tons of copper slag are generated per ton of copper production, depending on the properties of raw materials and operating conditions [1,2,3,4].It is estimated that approximately 12 million tons of copper slag is …
Further optimisation of the grinding and flotation conditions for this slag should yield an improved copper recovery.Minor differences in copper/iron selectivity for the flotation tests on the ...
Slag cleaning can be divided into two types, first being the pyrometallurgical reduction and settling of liquid slag, which is performed in slag-cleaning furnaces, and the second type being the mineral processing-based slag cleaning of solidified or granulated slag by crushing and/or grinding followed by gravity concentration or froth flotation ...
Shamsi et al. [] studied the effect of copper slag particle size on the flotation effect, the highest copper recovery efficiency of 79.89%was achieved when the grinding time was 80 min and the grinding size was 48 μm [].Sibanda et al. [] controlled the size of copper slag and flotation reagents to improve copper recovery by 16% when the …
Technological procedure of slow cooling slag from primary copper production is applied in the purpose of copper recovery in the level of 98.5% to blister. This technological procedure is divided into two phases, first slow cooling of slag on the air ... After testing of the experimentally gained samples of slowly cooled slag it was found that ...
The recovery of copper by floatation from slow cooled Ausmelt furnace slag was studied in this paper. The phases and composition of the slow cooled slag were analyzed. The factors which affected ...
Milling and froth flotation methods are quite common when dealing with slow-cooled slags. ... Effect of Cooling Rate and Slag Modification on the Copper Matte in Smelting Slag Article
Flotation is the main process for processing slag for valorization of copper and other metals. In order to achieve the best copper recovery and quality of the concentrate, it is necessary to ...
The modification and slow cooling of copper slag was conducted in a MoSi 2 electric furnace under the high purity N 2 (nitrogen) flow of 10 L/min. In the study, the copper slag was crushed to below …
Froth flotation is a good example of an engineering "system", in that the various important parameters are highly inter-related, as shown in Figure 1. ... Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 ...
Thionocarbamates are the group of collectors that are mostly used for flotation of sulphide copper minerals, alone or in combination with xanthates depending on a mineralogical composition of the ore. In this paper, the results of the study of application of thionocarbamates in copper slag flotation are presented. Chemical analysis of …
The beneficiation of copper slag employing gravity concentration and froth flotation, with particular emphasis on different collector systems, has been reviewed …
Therefore, the molten copper slag in the slag ladle was cooled slowly to nearly 1000 ℃, and then treated by water quenching, which could not only achieve …
The metal in copper slag was recovered by flotation. • Sodium carbonate and mechanical activation strengthen flotation. • The mechanism of activated flotation of …
This paper described experiments that were performed at different cooling rates (0.5, 1.5, 3, and 7 °C/min), with and without additive. A detailed characterization of the copper-rich phase...
Froth Flotation and Pyrometallurgical Copper-Slag Cleaning T ommi Rinne 1, Anna Klemettinen 1, Lassi Klemettinen 1, Ronja Ruismäki 1, Hugh O'Brien 2, Ari Jokilaakso 1 and Rodrigo Serna ...
At the same time, seawater is an alternative for froth flotation, given the current prevailing water crisis. The present paper study of froth flotation of copper, from smelting slag, using not desalinated seawater as fresh water. The higher copper recovery obtained was 77.27%. Keywords: Copper-Slag-Seawater-Froth Flotation 1.
froth flotation methods are quite common when dealing with slow-cooled slags. Before flotation, the slag needs to be cooled inacontrolledmanner. Therearemultipleoptionsforthis,such ... mance of copper slag, finding that it was possible to obtain a Clarification The designation of corresponding author is correct. Ari Jokilaakso …
In the past few decades, many processes for the extraction of copper from copper slag have been proposed, including flotation,7, 8 leaching9, 10 and bioleaching.11 In particular, the flotation process can efficiently recover copper from the slow-cooled copper slag. This process has been used in industry, making a noticeable impact on …
This article discusses the copper slag flotation process and its optimization factors, including particle size, pH, collectors and frothers, temperature, agitation, and froth collection system design.
Therefore, the molten copper slag in the slag ladle was cooled slowly to nearly 1000 ℃, and then treated by water quenching, which could not only achieve better flotation efficiency but also shorten the cooling time. Whereas, the copper flotation recovery rate of the CSS is in the range from 85 %∼92 % currently.
the slag. The slag concentration in this slag is higher than some copper mineral weight percent. At the same time, seawater is an alternative for froth flotation, given the current prevailing water crisis. The present paper study of froth flotation of copper, from smelting slag, using not desalinated seawater as fresh water. The higher …
The three converter slag samples used in the investigation were obtained from a western smelter. Chemical analyses of the respective slags are presented in table 1. Slag sample A, …
per slag (slow-cooled slag, air-cooled slag, and water-cooled slag), the recovery eciency of slow-cooled slag is higher (Fig. 1) [22, 23]. High cooling rate will reduce the eciency of copper otation, due to the increased ratio of ne particles and amorphous ne particles, which will adversely aect
These processes primarily include leaching to recover the copper,4,5 smelting reduction or direct reduction and wet magnetic separation to recover the iron,6,7 and froth flotation to recover the nonferrous metals.8,9 In particular, froth flotation has been very successful at recovering copper from slowly cooled copper slag in industrial ...
About 50–70 weight% of the copper in slag exist in sulphide (matte) form while the rest is in the silicate form as copper was lost due to mechanical entrainment and oxidation, respectively [1, 4].Due to the fact a majority of copper in the slag is in the matte form, copper slags in Zambia are processed via froth flotation [4, 5].However, Kafre …
Slag cooling beneficiation, which uses the surface property differences of sulfide minerals and oxide minerals to enrich valuable elements in the slag concentrate, is the most widely used method ...
Recovery of copper from copper slag by physical beneficiation using froth flotation was studied by Sarrafi et al. (2004). They used mercaptobenzothiazole (MBT) collector to recover the copper from the ground copper slag and indicated that a slow-cooled slag would be more favorable for better copper recovery.
froth flotation methods are quite common when dealing with slow-cooled slags. Before flotation, the slag needs to be cooled ... mance of copper slag, finding that it was possible to obtain a ...
Laboratory flotation tests of slow cooled converter slag have showed that 92.5% copper recovery at the copper cutoff grade of 24-25 % can be achieved by using a 50:50 ratio of DSP330 and SIBX ...