°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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There are two ways of cooling copper slag: slow cooling and water quenching. Different cooling speed will determine the particle size and mineral composition of copper minerals in copper slag. ... Then through grinding and flotation, the copper content in the copper slag was reduced to %.
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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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These operations create excessive liner wear rates during crushing and milling because the bond work index of copper slag is 22 kWh/t and this is considered a very hard smelter objective is to process wet concentrate to produce crushed slow cooled sulphur deficient nickel copper matte rich in platinum group metals gangue from the ...
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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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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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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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By simultaneous adding old flotation tailings in the ball mill at the rate of 9%, it is possible to increase copper recovery for about 20%. ... recovery copper from slowcooled CS by flotation ...
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Orica's flotation reagents increase copper recove, orica formulated a collector that would enhance milling and flotation of slow cooled copper slag, information is used, each user should review the information in the specific context of the intended application it is the user's responsibility to chat nowmilling and flotation of slow cooled ...
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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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The recovery of copper from copper smelter slag utilizing flotation has been studied. A copper smelter slag from the Wang Jiaqiao smelter in Yunnan Province of china, containing % Cu, % Fe, % Zn and /t Ag and so on, has been used .The effective factors such as grinding fineness, pH, and the dosage and type of collector were examined.
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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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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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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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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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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. In addition to testing the cooling time and controlling the cooling rate, some researchers have even considered using slag ...
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Smelters using slag milling and flotation for slag cleaning generally operate under conditions where most of the copper in slag would tend to form Cu 2 S upon cooling, although some metallic copper may still form via reaction Ideally, the slag should be slow cooled to allow most of the copper to form larger matte prills (over 30 μm in size ...
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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 flotation process involves adding various chemicals to the copper slag to make it hydrophobic, or waterrepellent. This allows the copper to attach to air bubbles, which are then floated to the surface of the flotation cell. Once at the surface, the copperrich froth is skimmed off and sent to a recovery tank where the copper is separated ...
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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. This technological procedure is divided into two phases, first slow cooling of slag on the air for 24 hours, and then accelerated cooling with water for 48 hours.
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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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... Applying faster cooling from to 7 °C/min the average particle diameter of copper bearing particles can be reduced by more than 30%, from to µm. It was found that the particle...
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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.
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Copper concentrate grading at with % Cu recovery was obtained, in the condition of the grinding fineness of − mm and the proportion of 80%, reagent dosages of 50 g/t for butyl xanthate and a pH value of 10 adjusted using Na 2 CO 3. Keywords Smelting slag Copper recovery Mineralogy analysis Flotation Download conference paper PDF
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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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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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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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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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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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Oricas Flotation Reagents Increase Copper Recovery Rates. slow cooled copper slag. Greater understanding, improved performance The best flotation performance was achieved with the 5050 addition ratio of DSP 330 and SIBX, with a copper recovery of for a head grade of and a cutoff copper grade of 2425...milling and flotation of slow cooled copper slag. milling and flotation of slow ...
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The optimum condition for flotation of the reverberatory furnace slag at Sarcheshmeh Copper Complex is as follows : pH=; R407=30 g/t; solid in pulp=30%; flotation time= min; MIBC=35 g/t. Slow cooling of the molten slag (in the range of °C) increases the copper recovery considerably (about 85%), and can also reduce the ...
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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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Technological procedure of slow cooling slag from primary copper production is applied in the purpose of copper recovery in the level of % to blister. This technological procedure is divided into two phases, first slow cooling of slag on the air ... Currently, the slags are sent to a milling and flotation plant for liberation and recovery ...
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