froth flotation slow cooled copper slag

Improving Beneficiation of Copper and Iron from …

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 …

Basic Principles & Variables Affecting Froth Flotation

The basic factors, principles and variables affecting froth flotation are enumerated in condensed form below: Ore. (a) Mineralogical character. (b) Fineness of grinding. (c) Method of grinding. Agents. (a) Principal flotation agent. ("Oil") α Character. β Quantity. (b) Minor agent. α Character. β Quantity. Water. (a) Quantity with respect to …

Ferric leaching of copper slag flotation tailings

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 ...

Extraction of Valuable Metals from Luanshya Copper Smelting Slag …

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 …

The Recovery of Copper from Smelting Slag by Flotation …

Materials. The smelting slag used in this study was obtained from a copper plant in China. Mineralogical analysis, performed using scanning electron microscope (SEM) and energy dispersive X-ray spectroscope (EDS), polarizing microscope and X-ray diffraction (XRD), indicated that fayalite (Fe 2 SiO 4) and magnetite (Fe 3 O 4) phases …

Improving Separation of Cu–Fe from Copper Slag by

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 …

Optimization of the flotation of copper smelter slags from …

Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. ... This work focuses on optimizing 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 ...

Crystal formation and growth by slow cooling for

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 ...

Flotation of copper sulphide from copper smelter slag …

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 ...

Effect of Cooling Rate and Slag Modification on …

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...

A comprehensive review on the recovery of copper values …

The beneficiation of copper slag employing gravity concentration and froth flotation, with particular emphasis on different collector systems, has been reviewed …

Review on Comprehensive Recovery Valuable Metals …

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

Efficient recovery of copper from copper smelting slag by …

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 …

Recovery of valuable metals from copper slag

The copper smelting process produces plenty of copper slag every year, which is a hazardous solid waste, but a secondary resource. In the present study, the extraction of copper, nickel, and cobalt from copper slag was investigated through the process of sulfation roasting–water leaching and the process of sulfation …

How to Recover Copper from Slag by Flotation

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, …

Recovering Value from End-of-Life Batteries by Integrating Froth …

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 ...

1 Froth Flotation – Fundamental Principles

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 ...

Laboratory test work and plant trials for milling and flotation …

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 …

Flotation Froth

Froth flotation is a chemico-physical separation process commonly used to separate constituents based on differences in surface wettability. Since nearly all minerals exhibit …

Study of the Copper Flotation from Copper Smelter …

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 …

Advances in recovery of valuable metals and waste heat from copper slag

The flotation method involves slow cooling, crushing, grinding, and flotation. The slow-cooling temperature should be below the slag melting temperature zone, which is key to the success of flotation. ... The copper slag was rapidly cooled by spraying with water after granulating it into small slag blocks. The slag flakes were converted into ...

Effect of Cooling Rate and Slag Modification on the …

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 …

Copper recovery from copper slags through flotation …

Flotation is one of the most important methods for recovering copper from copper slag, However, traditional grinding may be over grinding sometimes, resulting in smaller interface difference, which leads to a decrease in the selectivity of flotation. In this study, a sodium carbonate combined with mechanical activation enhanced flotation for …

Laboratory test work and plant trials for milling and flotation of slow

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 ...

Mechanism of Mineral Phase Reconstruction for Improving …

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 ...

Copper recovery from copper slags through flotation …

The metal in copper slag was recovered by flotation. • Sodium carbonate and mechanical activation strengthen flotation. • The mechanism of activated flotation of …

Recovery of metal values from copper slag and reuse of …

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.