The corrosion resistances of different refractory materials to the slag and changes of the morphologies after the high temperature experiments were analysed and compared. The present studies will lead to the development and applications of Cr-free refractories in copper industry and reduce the potential hazards to the environment and cost of ...
Copper slag has been carbothermally smelted in a submerged electric arc furnace, partially reducing FeO to a metallic phase comprising of copper and other metals by Acma et al. ... The studies have been performed for the machining of corrosion-resisting 1H18N9T steel, 55 plain carbon steel in the heat-treated condition, and 59 lead brass. ...
The current paper examines the laboratory testing of various concrete mixes (Mix 20, Mix 40, and Mix 60) containing copper slag waste as a partial replacement for …
The work presents corrosion of direct-bonded MgO-Cr refractory by three types of PbO-rich copper slags. Pellet test, contact corrosion test and hot stage microscopy test enabled to study corrosion ...
The control concrete specimens in this study were prepared using ordinary Portland cement (OPC) of 43-grade, adhering to IS 8112 [70], equivalent to Type-I Portland cement according to ASTM C150/C150M [71].The natural river sand (NS), meeting the criteria of Specification E11 of ASTM C33/C33M [72], and natural coarse aggregates of …
Copper slag (CS) is an industrial by-product obtained through the manufacture of copper metal, which is produced in large quantities every year. Natural aggregates are becoming more scarce and their production and consignment is becoming hard day by
The penetration and corrosion resistance to copper and anode slag of six magnesia–chromite and six chrome-free refractory brick types were tested using static finger tests at a typical copper ...
The adhesion of Na2CO3 slag to the surface of refractories in an alkali recovery furnace can cause corrosion and spall. Magnesia refractories can be used as linings in alkali recovery furnaces ...
A series of tests were performed to assess the influence of copper slag fine aggregates (CUS) on the corrosion behavior of horizontal steel bars in reinforced …
Natural resources are depleting Worldwide while at the same time the generated wastes from the industry are increasing substantially. Disposal of these waste materials has become a challenge in present era.
This study is focused on assessing the bond characteristics and corrosion behavior of reinforcing bars embedded in copper slag concrete composites (CSCC). RILEM beams were prepared using CSCC with varying replacement percentages of copper slag (CS), and tests were conducted following RILEM-FIP-CEB (1973). The corrosion …
As shown in Fig. 2, adding copper slag to concrete mixtures makes the concrete easier to work with. This improvement in workability is the result of copper slag's low water absorption characteristics. Download: Download high-res image (152KB) Download: Download full-size image; Fig. 4a. Slump value of different copper slag M 20 …
There is almost 6.67% increase in compressive strength of concrete compared to control mixture (i.e. sand) at 40% copper slag replacement at 28 days of cuirng.Mixture containing 50% copper slag gave higher split tensile strength of concrete, almost 19.3% increase compared to control mixture at 28 days of curing.For cement mortars, all ...
Metal Losses to the Slag in Smelting and Converting. 80% of the copper produced from ores worldwide originates from sulfide ores. The copper concentrate which results from flotation of the ore is typically smelted and converted to blister copper [].During smelting S and Fe are oxidized, where SiO 2 is added to form a liquid ferric or ferrous …
Copper slag is a by-product of copper production that contains valuable metals and can be used for various applications. This paper reviews the physical …
A rapid chloride ion migration test and potential corrosion analysis showed that copper slag aggregate concrete's initial density and corrosion resistance were higher than those of natural ...
DOI: 10.1016/j.conbuildmat.2020.121909 Corpus ID: 230556841; Effect of copper slag fine aggregate on corrosion processes and behavior in reinforced concrete prism specimen @article{Sandra2021EffectOC, title={Effect of copper slag fine aggregate on corrosion processes and behavior in reinforced concrete prism specimen}, …
3.3. Physical properties. The typical copper slag is generally black or dark brown in colour and its density is in the range of 3.2 – 4.5 g/cm 3, mainly depending on the content of Fe (Sarfo et al., 2017b).The average true density of copper slag is approximately 3.8 g/cm 3, which is denser than the ordinary natural aggregates (Shi et …
The corrosion of magnesia–chrome (MgO–Cr2O3) brick in molten MgO–Al2O3–SiO2–CaO–FetO slag has been characterized using a dynamic rotary slag corrosion testing for various test cycles ...
2.1.4 Copper slag Copper slag is a by-item material created from the way toward assembling copper. As the copper settles down in the smelter, it has a higher thickness, pollutions stay in the top layer and after that are …
Copper slag is a byproduct produced during the copper smelting and refining process. For this research work, Copper slag used as partial replacement to fine aggregate in concrete. In which compressive strength, split tensile strength and Flexural tests were carried out. Copper slag of proportions 0, 15, 30, 45, 60% was replaced with fine aggregate.
This work focuses on the use of copper slag, as a partial replacement of sand for use in cement concrete and building construction. Cement mortar mixtures prepared with fine aggregate made up of ...
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 ...
The mechanical and corrosion resistance properties of copper slag admixed concrete was evaluated using compression test and various electrochemical tests, respectively. Sand …
Download full-text PDF Read full-text. ... D., Baskaran, T. and Nagan, S. (2010). "Assessment of Corrosion and Durability ... Copper slag is generated when copper and nickel ores are recovered ...
maximum for the mix containing 30% of copper slag as fine aggregates. The concrete with 45% of copper slag would exhibit better durability over mix containing 30% of copper slag. Fig 4: Sorptivity of trial mixes 5. CONCLUSIONS 1. Copper slag is smooth and shiny. Hence, workability enhances with increased replacement levels. 2.
Copper slag fine aggregate (CUS) leads to a reduction of oxygen permeability.. CUS leads to the smaller microcell corrosion current density. • The resistance against chloride ingress of CUS was comparable to OPC.. CUS affects the potential differences that contribute to macrocell corrosion formation.. CUS …
Global copper slag (CS) emissions reached 57.2 million tons in 2021. Despite the increasing reuse of CS, the treatment of CS is still dominated by landfill so far, which not only occupies land resources but also causes damage to the environment. The application of CS to cement-based materials (CBMs) is one of the main approaches to …
Copper slag has been substituted for fine aggregate in various quantities ranging from 10% to 50% in the concrete compositions. In total, six concrete mix proportions have been produced, for which the parameters like water absorption and chloride permeability were evaluated. ... The effect of copper slag on strength and …
Pitting corrosion in seawater is one of the most difficult forms of corrosion to identify and control. A workhorse material for marine applications, 316L stainless steel (316L SS) is known to ...
The copper slag admixed GPC increased workability without sacing alkalinity dosage by lowering free water demand by 28% compared to control samples. 2. In ternary blends, the partially replaced fine aggregate with 40% copper slag was used with 13%. While M-sand as fine aggregate required 14% more water for ternary blended and …
The rotating method is carried out to investigate the effects of La 2 O 3 content (0–4 wt%) on the viscosity of copper smelting slag at high temperatures, the apparent activation energy is evaluated according to the Arrhenius equation and the structural characterization of this quenched slag is characterized by Raman …
Copper slag must have a sufficient quantity of lime to reach the required rate of hydration and to achieve the required early age strength. Therefore, in this case, in order to increase its Pozzolanic reaction, hydrated lime was added up to 2.0% to the weight of cement. Copper slag has high concentrations of SiO2 and Fe2O3 compared with OPC.
In order to study the influence of freeze–thaw cycles on chloride ion corrosion resistance of RPC with copper slag (CS) instead of quartz sand (QS), the 28d uniaxial compressive strength (UCS ...