The closedcircuit experimental results with butyl xanthate as collector in laboratory showed that the copper grade reached % and the recovery rate of copper reached % and the copper grade of tailings was only %. Keywords Ausmelt furnace Slow cooled slag Flotation Copper Download chapter PDF References
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The distribution of matte particles in each slag layer after cleaning was investigated in detail, which indicates that the copper content in the upper slag layer can be reduced to wt pct via ...
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Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. ... the slags are sent to a milling and flotation plant for liberation and recovery of residual copper. ... Several researchers of discarded slags has motivated the reprocessing of this have reported that slow cooling of the slag ...
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Generally, slow cooling slags are more beneficial for better recovery of copper by flotation. A slow cooling rate of the molten copper slag can minimise the effect of viscosity on the mass transfer of diffusion and grain growth of matte copper (or metallic copper), and further help in the subsequent fine grinding and flotation stages of copper ...
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After testing of the experimentally gained samples of slowly cooled slag it was found that this technological procedure gives the best results in promoting growth or coagulation of dispersed...
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In this study the effect of mixtures of copper slag and flotation tailings from copper mine Bor, Serbia on the flotation results of copper recovery and flotation kinetics parameters in a batch flotation cell has been investigated. By simultaneous
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on the other hand, a slowlycooled slag (Fig. 2) contains a multitude of microscopic particles which are amenable to recovery by grinding and flotation. For instance, laboratory milling tests on converter slag produced at the Noranda smelter (% Cu) have shown that a slowlycooled slag yielded a % copper tailing.
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Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. ... Another aspect that can affect both the milling and flotation of CS is the cooling behavior of the slag. ... Xue, P., Li, G., and Qin, Q. (2016). Recovery of copper from slow cooled ausmelt furnace slag by floatation ...
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The optimal closedcircuit flotation test flowsheet (Fig. 1) was designed based on the results of singlefactor condition is particularly pointed out that adding sodium carbonate (Na 2 CO 3) before ball milling is to increase the possibility of copperbearing mineral liberation from gangue minerals [6].The balance results after five cycles of testing are shown in Table 1.
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The results of analyzing the particle size and shape of copper slag samples after heat treatment of the samples showed that thermal treatment promoted copper slag grain size reduction (Fig. 2): the number of large particles (210 microns and more) was reduced twofold, and the number of particles down to 176 microns was amount of grains within the interval from 176 to 210 μm ...
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Download scientific diagram | Copper content in flotation tailings in different smelters from publication: The effect of primary copper slag cooling rate on the copper valorization in the ...
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In the Balkhash Copper Smelting Plant (BMZ) CS flotation tests have been conducted, cooled by a normal method (in ponds for one day) and slowly (in slag basins for ≈ 34 days). Slag refinement and its treatment were conducted by the SUMZ scheme.
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The following was used during the milling test work on the slag samples; a laboratory scale ball mill (400 mm by 300 mm), a Laarmann laboratory slurry press (size 13) for slurry filtration, a L measuring cylinder for measuring and adding water, a drying oven to dry the slurry, steel grinding balls for milling, process water for milling and ...
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Milling and froth flotation methods are quite common when dealing with slowcooled slags. Before flotation, the slag needs to be cooled ... highergrade copper slag concentrate at a cooling rate of
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The beneficiation of copper slag employing gravity concentration and froth flotation, with particular emphasis on different collector systems, has been reviewed thoroughly. Further, the reported pyro and hydrometallurgical processing routes have been deliberated.
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The Bureau of Mines made flotation and grindability tests on three converter slags containing to percent copper. The relative merits and costs for the flotation of slowcooled versus waterquenched slags were determined. Description of Slag Samples
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The invention provides a novel welding slag ladle suitable for a slow cooling process of copper slag. The novel welding slag ladle comprises a ladle body, a ladle bottom and a plurality of ladle feet, wherein the ladle body is pressed into a whole; the ladle bottom is welded at the bottom of the ladle body; the ladle feet are welded at the bottom of the ladle bottom; a radiating space is ...
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Laboratory Test Works and Plant Trials for Milling and Flotation of Slow Cooled Copper Slag. Pengfii Tan. Search for more papers by this author. Alberto Oalvez. Search for more papers by this author. Lucya Yunus. Search for more papers by this author. Xstrata Copper.
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Laboratory flotation tests of slow cooled converter slag have showed that % copper recovery at the copper cutoff grade of 2425 % can be achieved by using a 50:50 ratio of DSP330 and SIBX ...
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Indeed, these are effective routes to recover and utilize the copper and other nonferrous metals. Particularly, it is considerably successful to recovery copper from slowcooled copper slag by flotation process. However, these methods may suffer secondary pollutants or a difficulty in further treatments, and the recovery of iron is neglected.
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The metal in copper slag was recovered by flotation. • Sodium carbonate and mechanical activation strengthen flotation. • The mechanism of activated flotation of copper slag was revealed. Flotation Download fullsize image Keywords Activation 1. Introduction
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The produced slag, with iron to silica (SiO 2) plus lime (CaO) ratio of went for slow cooling and slag flotation. SO 2 rich offgas of the furnace was cooled in a heat recovery boiler (HRB) and further cleaned from dust in an electrostatic precipitator (ESP) before leading to an ID fan with oxygen content of % in the offgas.
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They used mercaptobenzothiazole (MBT) collector to recover the copper from the ground copper slag and indicated that a slowcooled slag would be more favorable for better copper recovery. Flotation of ground copper slag was also studied by Bruckard et al. (2004). According to them, using a twostage flotation process, 8087% Cu can be ...
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Technological procedure of slow cooling slag from primary copper production is applied in the purpose of copper recovery in the level of % to blister. ... and Objectives Ø To study the mineralogical composition of the different slags which form the feed to the slag milling and flotation plant. The slags are (i) Top Submerged Lance Furnace ...
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After the molten copper smelting slag is cooled gently, the flotation is carried out. 70% copper in the slag is recovered, and the copper content in the tailings can be controlled within % [13, 14]. However, except the copper content is reduced, the phase structure of the tailings is no different from that before flotation, and the threat ...
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At present, the most common way is slow, controlled cooling in a transfer ladle. However, research on the detailed effects of slow cooling and the function of slag modification is rare. This paper described experiments that were performed at different cooling rates (,, 3, and 7 °C/min), with and without additive.
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A kind of chilling vessel slag and the method for slow cooling electroslag bulk flotation, the most respectively chilling vessel slag is sorted out with the composition brass in slow cooling electroslag and white metal, after dispensing, coarse crushing processes according to a certain percentage, carry out crushing and screening again, the Ore that granularity is qualified enters I section ...
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This paper focuses on the grinding/milling of copper slag collected from the BCL Mine in Botswana to obtain a maximum amount of material in the desired size class with minimal energy consumption ...
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of nonstationary slag cooling and experimentally tested the properties of slowcooling slags. They verified that, under slowcooling conditions, the generation of larger copper and copper sulfide particles was promoted, and thereby the particles could be better collected in the subsequent flotation to reduce copper losses in the waste slag.
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Another aspect that can affect both the milling and flotation of CS is the cooling behavior of the slag. ... Recovery of copper from slow cooled ausmelt furnace slag by floatation. Characterization of Minerals, Metals, and Materials 2015, 621628. / ...
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°C) with 23 wt% Cu remaining in the smelting slag. At present, the recovery of copper from slag is processed by slow cooling, milling and flotation at Fangyuan. Bottom blown oxygen copper smelting technology has demonstrated great potential and will be transferred to other plants around the World. In addition to the flotation process ...
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A material supplier from Belgium would like to produce limestone powder for his custome...
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