corrosion of partially copper slag in pdf

corrosion of partially copper slag in pdf

NSA 172-13 Slag and Its Relation to Corrosion of Ferrous M.

SLAG and Its Relation to the Corrosion Characteristics of Ferrous Metals NATIONAL SLAG ASSOCIATION nationalslagassoc.org Page 8 5. Erosion - Corrosion Erosion-corrosion is the acceleration or increase in rate of corrosion of a metal due to relative movement between a moving fluid and the metal. Many erosion-corrosion

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Abstract Magnesia-chrome refractories have been essential materials for application as wear lining in copper production furnaces for many years. Formation of hexavalent chromium (Cr(VI)) has been a major concern despite its admirable corrosion resistance in copper slag. Magnesia-chrome refractory specimens (9, 12, 15 and 18 wt% Cr2O3) with addition of Al2O3 and TiO2 were fabricated and ...

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Download full-text PDF Read full ... carried out in India concerning durability and corrosion studies of copper slag admixed concrete. ... aggregate is partially replaced with copper slag for 10% ...

Comparison of The Replacement of Natural Sand by Copper ...

slag. This paper reports some experimental studies on the effect of copper slag partially replacing sand on concrete performance. In this paper, an experimental work was carried out to investigate the effect of copper slag as a fine aggregate on the properties of concrete. For this work, copper slag is a byproduct of copper production, which ...

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May 25, 2019 · 1. Introduction. In copper production, magnesia-chrome refractories have been widely used as highly corrosion resistance lining of smelting, converting and refining furnaces [, , , , , , ].The high refractoriness and extremely low solubility of Cr 2 O 3 into molten slag are responsible for their excellent corrosion resistance property [1,8,9].However, recent environmental policies are ...

CAUSES OF COPPER CORROSION IN PLUMBING SYSTEMS

The copper corrosion product layers, once properly formed, are normally stable, adherent and are relatively insensitive to changes in water composition and operating conditions. The copper pipework system can then go on to give a long trouble-free life, well in excess of 20 years.

STUDIES ON PARTIAL REPLACEMENT OF FINE AGGREGATES

component. Copper slag can be used in concrete as fine aggregate to solves the problem of waste disposal. In this study copper slag is partially replaced for fine aggregates at various replacement levels in concrete. From the studies it is proved that, copper slag can partially replace the fine aggregate,

Mechanical Properties and Durability of Concrete with ...

of concrete with copper-slag fine aggregate, with few exceptions [e.g. 236, , 25]. In the former two papers con-crete sand was partially replaced by copper slag and the water absorption, corrosion of reinforcement, chloride per-meability and acid and sulphate resistance of the resulting concrete were studied. It was found that concrete with cop-

STUDY OF STRENGTH AND DURABILITY OF STEEL MESH

portion of natural aggregates with steel slag and copper slag would lead to considerable environmental benefits. The utilization of waste materials from the industries has been continuously emphasized in the research work. The present work is to use steel slag and copper slag as partial replacement for fine aggregate. The M25

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The chemical composition of copper slag varies with the type of furnace. The typical composition of smelting slags is Fe (as FeO, Fe 3 O 4) 30–40%; SiO 2 35–40%; Al 2 O 3 up to 10%; and CaO up to 10%. The density of copper slag varies between 3.16 and 3.87 g/cm 3 based on the amount of iron content. The average specific gravity of copper ...

Journal of Alloys and Compounds

Corrosion mechanisms of magnesia-chrome refractories in copper slag and concurrent formation of hexavalent chromium Tengteng Xu a, b, Yibiao Xu a, b, *, Yawei Li a, b, Shaobai Sang a, b, Qinghu Wang a, b, Tianbin Zhu a, b, Mithun Nath a, b, Bo Zhang a, b a The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, 430081 Wuhan, PR China

Portland Cement Partially Replaced by Blast Furnace Slag ...

Portland Cement Partially Replaced by Blast Furnace Slag and Multi-Walled Carbon Nanotubes: Effect on Corrosion ... The corrosion behavior of reinforced concrete is an important factor affecting its durability. ... copper/copper sulfate and graphite electrodes were used as a

Methodologies for the investigation of corroded iron ...

are very poorly preserved due to corrosion. Corrosion ... (copper) slag recovered from these deposits, the ... often selectively or partially replaced with (different) iron oxides as a part of the corrosion mechanism. This observation was made as early as the 1960s (Knox 1963) and several subsequent works have uti- ...

Corrosion mechanisms of magnesia-chrome refractories in ...

May 25, 2019 · 1. Introduction. In copper production, magnesia-chrome refractories have been widely used as highly corrosion resistance lining of smelting, converting and refining furnaces [, , , , , , ].The high refractoriness and extremely low solubility of Cr 2 O 3 into molten slag are responsible for their excellent corrosion resistance property [1,8,9].However, recent environmental policies are ...

Evaluation on Accelerated Corrosion Properties of the ...

International Journal of Engineering Research & Science(IJOER) [Vol-1, Issue-4, July- 2015] Evaluation on Accelerated Corrosion Properties of the Concrete Produced by Replacing Sand by Copper Slag Vishwa B Tipashetti1, Shreepad Desai2 1 P.G. Student, M. Tech (Structural Engg.), Civil Engineering Department, Government Engineering College, Devagiri, Haveri, Karnataka, India.

A REVIEW OF INNOVATIVE USE OF COPPER SLAG AND

The addition of upto 50% of copper slag as a sand replacement yielded comparable strength with that of the control mix. However, further additions of copper slag had caused a reduction in the strength due to an increase of the free water content in the mix. Mixes

Study of the Properties of Concrete Containing Copper Slag ...

Mar 02, 2015 · From the fig.7 it was observed that the copper slag admixed concrete showed higher corrosion rates than normal concrete in various percentages of replacements. The corrosion rate of copper slag admixed concrete increases as percentage of copper slag increases. The corrosion rate can be controlled by coating the bar with Zinc Phosphate paint.

Basic Understanding of Weld Corrosion

4/Corrosion of Weldments Fig. 6 Time-temperature-sensitization curves for type 304 stainless steel in a mixture of CuSO 4 and HSO 4 con- taining copper. Source: Ref 14. Curves A and B indicate high and medium cooling rates, respectively.

Mechanical and Durability Properties of RC Beams Using ...

copper slag waste.The result of this study emphasized the effectiveness of copper slag replacement in improving the concrete resistance against sulfate attack. In this study, the sulfate resistance of concrete made with 5%, 10% and 15% of copper slag were studied in comparison with concretes without copper slag replacement.

Production and Properties of Copper Slag | Request PDF

Copper slag is a by-product generated during smelting to extract copper metal from the ore. The copper slag obtained may exhibit pozzolanic activity and may therefore be used in the manufacture of ...

[PDF] CORROSION CURRENT DENSITY OF MACROCELL OF HORIZONTAL ...

Chloride-induced corrosion of steel bar in concrete is one of the main problems affecting the durability of reinforced concrete (RC) structures. Expansive products are formed due to corrosion at the interface between concrete and steel bar. In this study, the differences in the magnitude of the macrocell corrosion current density in RC column specimens cast using copper slag fine aggregate and ...

[email protected]: Experimental investigation on ...

Jul 25, 2013 · In third part, assessment of corrosion and durability studies were incorporated. Since copper slag contains more than 55% of Fe2O3 content, corrosion and durability factors are necessary to find out. in concrete. The final fourth part of this investigation, seismic application of

Experimental Investigation of Copper Slag Replacement of ...

Partial replacement of copper slag in fine aggregate and cement reduces the cost of making concrete. Replacement of copper slag (100% replacement with sand)increases the self weight of concrete specimens to the maximum of 15-18%. The initial and final setting time of copper slag admixed concrete is higher than control concrete.

Mechanical Properties and Durability of Concrete with ...

Jan 27, 2017 · Copper slag is a voluminous waste material obtained during the manufacturing of copper (matte smelting process). As its disposal becomes a concern for environmental protection agencies and governments, possible alternative outlets for this waste material are needed. The paper presents a laboratory study on CEM-II concrete mixes, containing water-cooled copper slag waste material for a

Corrosion and Leaching Studies in Blended Copper Slag Mortar

Copper slag usually has a low content of CaO; granulated copper slag exhibits pozzolanic properties as CaO content in copper slag increases, it can exhibit cementitious properties. Studies [8-12] indicated that a copper slag, which contains approximately 19% CaO, show a good cementitious property under the activation of NaOH.

Evaluation on Accelerated Corrosion Properties of the ...

concrete containing copper slag and artificial mineral admixtures. Mix proportions have been obtained for M30 grade control concrete as per IS 10262:2009. Then copper slag is replaced by 20 %, 40 %, 60 %, 80 % and 100 % of sand simultaneously

Journal of Alloys and Compounds

Corrosion mechanisms of magnesia-chrome refractories in copper slag and concurrent formation of hexavalent chromium Tengteng Xu a, b, Yibiao Xu a, b, *, Yawei Li a, b, Shaobai Sang a, b, Qinghu Wang a, b, Tianbin Zhu a, b, Mithun Nath a, b, Bo Zhang a, b a The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, 430081 Wuhan, PR China

Study of the Properties of Concrete Containing Copper Slag ...

From the fig.7 it was observed that the copper slag admixed concrete showed higher corrosion rates than normal concrete in various percentages of replacements. The corrosion rate of copper slag admixed concrete increases as percentage of copper slag increases. The corrosion rate can be controlled by coating the bar with Zinc Phosphate paint.

Copper Slag Partially Replaces Fine Aggregate in M 25 ...

both are partially replaced by Copper slag. 3.2 Objectives 1) To study the property and characteristics of M sand and copper slag 2) Collection of primary data 3) To compare the properties and characteristics of various materials used in mix designing with IS code 4) To carry out mix design by using m sand as fine aggregate.

[PDF] CORROSION CURRENT DENSITY OF MACROCELL OF HORIZONTAL ...

Chloride-induced corrosion of steel bar in concrete is one of the main problems affecting the durability of reinforced concrete (RC) structures. Expansive products are formed due to corrosion at the interface between concrete and steel bar. In this study, the differences in the magnitude of the macrocell corrosion current density in RC column specimens cast using copper slag fine aggregate and ...

Copper Corrosion by Atmospheric Pollutants in the ...

Hydrogen sulphide (H 2 S) is considered one of the most corrosive atmospheric pollutants. It is a weak, diprotic, reducing acid, readily soluble in water and dispersed into the air by winds when emitted from natural, industrial, and anthropogenic sources. It is a pollutant with a high level of toxicity impairing human health and the environment quality.

Conditions Contributing to Underground Copper Corrosion

Conditions Contributing to Underground Copper Corrosion. This document is a edited version of an article which appeared in American Water Works Association Journal, August 1984 and is reprinted, with permission from American Water Works Association.. By J.R. Myers JRM Associates, 4198 Merlyn Drive, Franklin, OH 45005 A. Cohen Copper Development Association Inc., 260 Madison Ave.,

COMPARISON OF ENGINEERING PROPERTIES BETWEEN

copper slag and spent copper slag concurrently in bricks. Hence, this research explored the possibility of utilizing copper slag in construction industry, particularly in bricks. From the result of this research, there is scientific evidence that the engineering properties of pure copper slag is

(PDF) Mechanical strength and corrosion detection of ...

(2) X-ray that the slag cement with 20–30% substitution has the best diffraction analysis by using a copper target under working corrosion resistance. Silica fume (SF) and blast furnace slag conditions of 40 kilo, 25 milliampers and Nickel filter.

A BRIEF REVIEW ON BLAST-FURNACE SLAG AND COPPER

of copper is produced, 2.2-3 tonnes of CS are gen-erated [4]. In Oman approximately 60,000 tonnes of copper slag is produced every year [5]. The pro-duction approximately 0.36, 0.244, 2.0, and 4.0 million tonnes of CS is reported in Iran, Brazil, Ja-pan and the United States, respectively [6]. Cur-rently, about 2 million tonnes of waste copper slag

Partial replacement of Fine aggreggate by Copper Slag and ...

Jan 16, 2017 · The percentage replacement of sand by granulated copper slag where 0%, 5%, 10%, 15%, 20%, 30%, 40% and 50%. The compressive strength was observed to increase by about 35-40% and split tensile strength by 30-35%. The experimental investigation showed that percentage replacement of sand by copper slag shall be up to 40%.

Analysis of Slag Activity on Corrosion of Ceramic ...

the possibility of dissolution of the ceramic material in the molten slag, but also possibility of erosive activity of the slag on that material. Keywords: Furnace lining, Ceramic material, Refractory corrosion, Flash furnace slag, Copper 1. Introduction In the first stage of its development the process production of

Results and Discussion

This work was partially financially supported by the statutory funds of the Faculty of Materials Science and Ceramics, AGH, Kraków, no. 16.16.160.557 •Based on observation of numerous BSE-SEM images we detected forsterite as the only new corrosion product of MgO-Cr refractory corroded by PbO-rich copper slags Z1, Z2 and Z3.