At the … The usage of this slag reduces the usage of primary materials as well as reduces the construction depth which in turn reduces energy demand in building. However, the slag tends to be vitreous or “glassy,” which adversely affects its frictional properties (skid resistance), a potential problem if used in pavement surfaces. Michigan Department of Transportation Specifications consider reverberatory copper slag to be a conventional coarse and fine aggregate for HMA pavement (Gorai et al., 2003). Abrasive blasting is used to clean and shape the surface of metal, stone, concrete and other materials. During the past two decades attempts have been made by several … However, on the whole, the results do support the viewpoint that concrete designed with CS as sand should develop 5–10% higher strength than the corresponding natural sand concrete. Granulated copper slag is more porous and therefore has lower specific gravity and higher absorption capacity than air-cooled copper slag. Table 5: Chemical Properties of Copper Slag S. No. Figure 4.7. Under a constant water/cement ratio, with a given set of materials, and in the absence of particle size distribution data for the two sands, such a variable strength response with increasing CS content is most likely to be the outcome of varying particle packing, with the positive effect of CS as a sand material at a certain point (in this case up to 50/50 sand/CS content), being gradually eroded, and beyond a certain content (in this case 80% CS) it enters the negative field. The objectives of this study were to investigate the physical and mechanical properties of particulate (red mud and copper slag) filled epoxy-bamboo fiber hybrid composites and present the comparison … However, the few studies evaluating the influence of using ground CS with different production methods on the properties of mortar (Douglas et al., 1986) and concrete (Mohsenian and Sohrabi, 2009a) have produced inconclusive results as shown in Figures 5.11 and 5.12. The granulated copper slag is made up of regularly shaped, angular particles, mostly between 4.75 and 0.075 mm (No. http://dx.doi.org/10.1061/(ASCE)MT-1943-5533.0001159, Copper Slag in Cement Manufacture and as Cementitious Material. The smelting process in this company is facilitated in the reverberatory furnace with the annual capacity of 60 000 tons of anodic copper. A recent study evaluated the feasibility of activating ancient copper slags from the north of Chile,69 and identified notable differences in the mineralogy and chemical composition depending on the slag source. Data from Piatak, N.M.; Parsons, M.B. Figure 5.11. The blasting media manufactured from copper slag brings less harm to people and environment than sand. Typical physical and mechanical properties of copper slag. Slag from ores that are mechanically concentrated before smelting contain mostly iron oxides and silicon oxides. The slags cannot be discarded due to the high content of copper and hence they are sent to a milling and flotation plant (Slag Mill Plant) for liberation and recovery of copper. It has high friction angle due to a sharp angular shape. These slags presented pozzolanic activity, and upon activation with a sodium silicate activator, monoliths with compressive strength up to 64 MPa were produced. Ahmari et al.70 assessed the effect of partially replacing copper slag by copper mine tailings, on the microstructure and mechanical performance of alkali-activated cements produced with these precursors. Rate of grit consumption, amount of dust generated, and surface finish quality are some of the variables affected by the choice of grit material. Some physical and mechanical properties of copper slag are shown in Table 10.8. This elucidates that it might be possible to utilize existing stockpiles of copper slags for producing alkali-activated cements, and to contribute to remedying some of the existing environmental issues associated with the disposal of these slags. 2.2. In this process, a stream of abrasive grains called grit are propelled toward the workpiece. Characteristics and utilization of copper slag—a review. The information on the consistence and instability in the form of bleeding and segregation, corresponding to the strength data, as reported by the authors, has also been included in Figure 4.7. The ulti-mate analyses of each oil are shown in Table 2. General trends observed are summarised in Figure 4.6 and are described below: Figure 4.6. Before going into detail, it is worth appreciating that the reported experimental strength data on such a wide scale and over a period of time can, to an extent, vary between studies. (2009a) because of a possible compaction problem in concrete due to low slump and Sudarvizhi and Ilangovan (2011, 2012) for using copper slag in conjunction with ferrous slag. The number of strength data tabulated in Table 4.3(b) for CS concrete having a water/cement ratio equal to the reference concrete is significantly greater than that in Table 4.3(a) for CS concrete having consistence equal to the reference concrete. 2). Although it would be expected that a reduction in water content at a given cement content for equal consistence would lead to strength improvement of the concrete mix, this has not always been realised [Table 4.3(a)]. by nelting coptr)er ore in oil-fired reverberatory furnaces. The petro-diesel was obtained from local petrochemical company and biodiesel was purchased from biodiesel production company, respectively. EC number: 266-968-3 | CAS number: 67711-92-6 | CAS number: 67711-92-6 0.79% Lead (as Pb) : Approx. Copper slag is just one of many different materials that may be used as abrasive grit. Abrasive blasting is used to clean and shape the surface of metal, stone, concrete and other materials. Note ∗: The average data excluded the results of Al-Jabri et al. Composition Contribution (in %) 1 Silica - SiO 2 33.52 2 Iron - Fe 2 O 3 55.8 3 Aluminium - Al 2 O 3 3.8 4 Calcium –CaO 3.14 5 Magnesium –MgO 0.72 6 Sodium - Na 2 0.4 Potassium - K 2 O 0.76 8 Titanium - TiO 2 0.5 9 Copper – Cu 0.99 Figure 1: Appearance of Copper Slag Figure 2: Grading of Copper Slag . The air-cooled and granulated copper slag has a number of favorable mechanical properties for aggregate use, including excellent soundness characteristics, good abrasion resistance, and good stability. contain copper with the content ranging between 0.8 to 5% copper. Indeed, this is likely to be the main contributor to the variable trends observed in the strength data provided in the literature, and this can clearly be seen from all the data presented Table 4.3 in two forms, namely the studies where, perhaps prudently, the two sets of mixes, CS mix and the corresponding reference mix without CS, were made to have the same consistence, and these results are presented in Table 4.3(a), and where the water/cement ratio was considered as the prime factor and kept constant, even if the consistence was to vary, and these results are presented in Table 4.3(b). 7-day compressive strength as a function of the curing temperature of sodium hydroxide-activated copper smelter slag/copper mine tailings binders, with different ratios of copper slag to mine tailings as marked. The slag is a complex mixture of metals, sulphides, silicates and oxides with a glassy amorphous material. http://dx.doi.org/10.1016/j.apgeochem.2014.04.009. thetic slag composition, temperature and the crucible material affect the fluidity of molten copper and slag, both during the melting and the casting of molten metal and slag. Copper slag is mainly used for surface blast-cleaning. https://en.wikipedia.org/w/index.php?title=Copper_slag&oldid=967311512, Creative Commons Attribution-ShareAlike License, This page was last edited on 12 July 2020, at 14:36. This could have been caused by several factors relating to the mix proportioning, as well as the particle packing of aggregates in both sets of mixes, eliminating the advantage that could be accrued by the use of quenched CS as a cement constituent in the form of enhanced pozzolanic activity. This possibly explains the variations in the trends observed in the strength development of concrete with increasing CS content of the sand used. Copper slag is … The effects of CS replacing sand on the strength of concrete and mortar, with varying strength grade and replacement levels up to 100%, have been investigated in a large number of studies reported since 1989. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000067, URL: https://www.sciencedirect.com/science/article/pii/B9780081003817000136, URL: https://www.sciencedirect.com/science/article/pii/B9780081003817000033, URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000080, URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000018, URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000031, URL: https://www.sciencedirect.com/science/article/pii/B9780081020012000085, URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000055, URL: https://www.sciencedirect.com/science/article/pii/B9780081003817000100, URL: https://www.sciencedirect.com/science/article/pii/B9780081009864000043, Sustainable Construction Materials: Copper Slag, 2017, Use of Copper Slag in Geotechnical Applications, Ravindra K. Dhir OBE, ... Chao Qun Lye, in, Sustainable Construction Materials: Copper Slag, Slag use in cement manufacture and cementitious applications, The Utilization of Slag in Civil Infrastructure Construction, Shi, Meyer, & Behnood, 2008; Shi & Qian, 2000; Murari, Siddique, & Jain, 2015, Nonferrous metal extraction and nonferrous slags. Experimental charges were quenched and prepared in polished mounts. REACH Slags, copper smelting. 0.009% Zinc (as Zn) : Approx. Leaching tests on mechanically activated samples gives an idea of the resistance to leaching of the heavy metals even upon weathering. Table 1 Chemical composition of the copper slag (wt%) Substance Concentration Na* 0.4 Mg* 1.2 Al* 2.3 K* 0.9 Ca* 0.8 Fe(tot)* 37.9 Cu* 1.2 Zn* 1.8 S(tot) with S/C** 0.4 SiO 2*** 31.7 Satmagan**** (Fe 3O 4)12 *Inductively coupled plasma spectrometry; **combustion method; ***colorimetry; ****magnetic balance for measuring Fe 3O 4 concentra- Moderate silica content is also generated, N.M. ; Parsons, M.B the! 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