A pyro-hydrometallurgical process for the treatment of copper slag has been developed to accomplish recovery of nickel, cobalt, and copper and reuse of iron source. It was proved that the slag phase was reconstructed by sulfation-sulfate decomposition roasting followed by water leaching, over 95% iron existing as hematite was transferred into ...
Melting reduction modification is a process in which the iron-containing modified slag and the iron oxides of the steel slag are reduced into metallic iron. The reduction order of iron oxide is from high to low price, followed by Fe 2 O 3 —Fe 3 O 4 —FeO—Fe. The raw materials of the melting reduction process derive from type slags produced ...
cessing of slag from the production of steel, copper, nickel, and their alloys is most difficult. Around the world, the production of copper generates slag at a rate of around 25 million t/yr, according to the estimate in [1]. The environmental impact of the hundreds of mil-lions of tons of tailings slag at copper plant includes
Contribute to dihog/sbm development by creating an account on GitHub.
The slag dumped just outside the mine poses to be a big issue for the environment as copper slag contains heavy metals associated with copper, nickel, cobalt, iron and lead which can seep to underground water [5].Recovery of metals from dump/slag to profit the plant is considerable cost driver to the process as it will enhance reduction of slag ...
SMS group has been working on optimizing the slag conditioning process for decades. The Blue Slag process follows a two-step principle, the ladle treatment station and the slag settling furnace, and was primarily developed for the …
Similar compounds were found in cement and copper slag, such as Ca, Si, Al, Na, Fe, Mg, etc. The high peaks from the XRD image of copper slag indicate the presence of iron silicate fines and ...
The precipitation of copper can be induced during slag cooling by the reaction between copper oxide and iron oxide, forming metallic copper and ferric iron [49, 50]. The precipitated metallic ...
Copper Slag's hard angular particles are uniform in both weight and gradation; combined with a Mohs Scale rating between 6 and 7 in addition to low friability, it delivers fast-cutting strength for even the most demanding projects. 20% heavier than other mineral abrasives such as coal slag, Copper Slag, has a specific
The objective of the flotation work was to maximize copper recovery and iron rejection from slags made in the smelting processes. The slags treated included a reduced low copper slag, an oxidized high copper slag composite, and a much reduced low copper self-pulverizing slag. The copper content of the slags varied from 2.9% to 14% Cu.
The type of coal used in the experiment was lignite and was obtained from a coal mine plant in Liaoning Province. ... Unites States $ 25.056 can be obtained for each treatment of 100 kg copper slag. 2.3 Analysis Method ... The reduction slag is on the top of the solid copper slag, and ingot iron is on the bottom of the solid copper slag. The ...
Since copper smelting slag contains high content of iron, and copper and zinc, common applications of copper smelting slag can be used in value-added products such as abrasive tools, roofing ...
Copper slag is generated when copper and nickel ores are recovered from their parent ores using a pyrometallurgical process, and these ores usually contain other elements which include iron, cobalt, silica, and …
11.2 Mechanically Stabilised Copper Slag Subgrade and Sub Base 30 11.3 Mechanically Stabilised GSB and WMM Layers with Copper Slag 31 11.4 Construction Methodology for Bituminous Mixes with Copper Slag 31 12. Quality Control Tests 31 12.1 Copper Slag Embankment and Subgrade 31 12.2 Copper Slag GSB, Cement Stabilised Base/Sub base, …
Iron in copper slag mainly includes: (1) Magnetite is reduced to metallic iron and migrates into the metal phase. (2) The fayalite phase is carbothermal decomposed to metallic …
Mountain, the Mufulira slag dump and the Chambishi slag dump [1]. Just like these others, of course with varying concentrations, the Nkana slag dump for example [8] contains a substantial amount of copper and cobalt. The treatment of copper sulphides ores which normally take the route of flotation
Slag sample generated as solid waste from a copper plant in Southern Africa contains strategically important base metals like copper, nickel and cobalt.
The load resistivity of copper slag allowed it to be favourable for cutting non-ferrous metals, wood or plastics. W. S. Inynierska [109] reported that copper slag could be an efficient binder instead of ceramic binder in grinding wheel manufacturing. Improved grinding efficiency and decreased energy consumption were obtained by improving the ...
The Fe3O4 and Fe2SiO4 in copper slag were successfully reduced to metallic iron by coal-based direct reduction. Under the best reduction conditions of 1300 °C reduction temperature, 30 min reduction time, 35 wt.% …
Copper slag delivers the safe, powerful, and cost-effective solution for blasting away buildup on massive industrial projects to brushing smaller-scale surfaces clean.
Copper slags have been used as abrasives (polishing and cleaning) for metallic structures [15,16] and mainly in the building industry: concrete manufactured with copper slag [5]; copper slags as ...
With high-quality iron ore grades with an iron content of 64 to 67 %, a blast furnace typically produces about 0.25 to 0.30 t of slag per t of pig iron. In the case of inferior grade ores below 60 %, the amount of slag is typically 0.35 to 0.50 slag/t of pig iron [1].
The initial copper matte and slag were mixed with different chemicals to obtain the required compositions. FeS was added to prepare low-grade copper matte, SiO 2 was added to decrease the Fe/SiO 2 ratio of the slag, and the CaO from CaCO 3 was used to control its concentrations in the slag. Pure FeS, SiO 2, and CaCO 3 were supplied by Sigma-Aldrich.. …
Tendazole degradation (TBZ D) in diferent types of water matrices was assessed by applying two Advanced Oxidation Processes, both using simulated solar light (SSL), copper slag (CS) as an iron based catalyst, and separately H 2 O 2 or NaOCl as oxidants. First, optimum conditions for TBZ D were evaluated in distilled water, TBZ D = 90% at 60 min for CS …
Nickel-cobalt mixed hydroxide precipitate was obtained from liquors after the separations of copperCopper, iron, and aluminum step by step.
Several studies have explored the utilization of copper slag as a source of iron, highlighting its potential for iron recovery and recycling.
vestigations [19], on the composition and phase of copper slag, it was found that indeed there are viable metals such as cobalt, nickel, copper and iron in slag that can be recovered. 2. Materials and methods 2.1. Materials Copper slag from BCL mine was sampled and used in the experiments as feed material.
For each ton of copper metal produced worldwide, about 2.2–3.0 tons of slag is produced, estimated to be approximately 40 million tons of slag generation annually (J. P. Wang & Erdenebold, 2020), with the content of iron reaching 45%; the copper slag has potential to produce approximately 26.8 million tons of Fe annually (Heo et al., 2013). A ...
A novel process is proposed in this paper for a green and efficient utilization of copper slag. The basic premise involved the addition of different amounts of Na 2 O into molten copper slag and evaluation of the effects on the magnetic fraction and the properties of ceramics generated from the non-magnetic residue, and mechanisms of the effects were further studied …
Increased demand of copper in the last few decades resulted in the generation of a large amount of smelter slag. About 80% of the world's copper to date was produced from sulfide ores by concentrating followed by the pyrometallurgical operations such as smelting and refining (Heimlich et al., 2010, Fan et al., 2014).While slag from blast furnace in iron making has found …
Crushing: The slag crusher is used to reduce the slag particle size step by step to reduce and crush in order to improve the metal sorting rate; A blacksmith is used to break up and disperse the iron slag mixture. Magnetic separation: the iron slag mixture in the slag is separated for crushing; The iron blocks and iron powder in the slag are ...
After treatment, the Fe(II) in the copper slag was completely converted to Fe(III)-O and Fe(III) -SO 4 2-with binding energies of 711.74 eV and 714.25 eV, respectively. It indicated that oxygen from the air may have participated in the oxidation of Fe(II) in the copper slag during the evaporation and crystallization process.
Many studies have testified the process as being efficient for the treatment of copper slag with high contents of silicon and iron, as well as copper slag containing copper, zinc, and lead. A flowchart of smelting reduction in an electric arc furnace is illustrated in Fig. 11. Raw materials composed of ground copper slag, reductant (e.g. coke ...