Determining the Degree of Removal of Copper From Slag

Open access

Abstract

The scope of work included the launch of the process of refining slag suspension in a gas oven using a variety of technological additives. After the refining process (in the context of copper recovery), an assessment of the effect of selected reagents at the level of the slag refining suspension (in terms of copper recovery). Method sieve separated from the slag waste fraction of metallic, iron - silicate and powdery waste. Comparison of these photographs macroscopic allowed us to evaluate the most advantageous method of separating metallic fraction from the slag. After applying the sample A (with KF2 + NaCl) we note that in some parts of the slag are still large amounts of metallic fraction. The fraction of slag in a large majority of the elements has the same size of 1 mm, and a larger portion of the slag, the size of which is from 2 to 6 mm. Definitely the best way is to remove the copper by means of the component B (with NaCl) and D (with KF2). However, as a result of removing the copper by means of component C (with CaO) were also obtained a relatively large number of tiny droplets of copper, which was problematic during segregation. In both cases we were able to separate the two fractions in a fast and simple manner.

[1] Czarnecki, J., Śmieszek, Z., Miczkowski, Z., Bratek, S., Kubacz, N., Ostrowski, T., Gostyński, Z. & Warmuz, M. (2006). Two-stage process of flash slag decopperisatio. Ores and Non-Ferrous Metals. 51(7), 405-411 DOI: bwmeta1.element.baztech-article-AGH6-0005-0020 (in Polish).

[2] Burzyńska, L., Gumowska, W., Harańczyk, I. & Żabiński, P. (2002). Some aspects of copper electrorafining process. Non-ferrous Metals. WMN AGH. 29-47 (in Polish).

[3] Bydałek, A.W., Bydałek, A., Wołczyński, W. & Biernat, S. (2015). The concept of slag decopperisation in the flash furnace process by use of complex reagents. Archives of Metallurgy and Materials. 60(1), 323-326. DOI: 10.1515/amm-2015-0052.

[4] Łędzki, A., Migas, P., Stachura, R., Klimczyk, A. & Bernasowski, M. (2009). Dynamic viscosity of blast furnace primary and final slag with titanium and alkali admixtures. Archives of Metallurgy and Materials. 54(2), 499-509.

[5] Migas, P. & Karbowniczek, M. (2010). Interactions between liquid slag and graphite during the reduction of metallic oxides. Archives of Metallurgy and Materials. 55(4), 1147-1157. DOI: 10.2478/v10172-010-0018-0.

[6] Wołczyński W., Bydałek A.W., (2015), Gravity/buoyancy competition within coagulation of copper droplets in slag. Archives of Materials Science and Engineering. 76(1/2015), 35-45.

[7] Kucharski, M., Sak, T., Madej, P., Wędrychowicz, M. & Mróz, W. (2014). A Study on the Copper Recovery from the Slag of the Outokumpu Direct-to-Copper Process. Metallurgical and Materials Transactions B. 45(2), 590-602 DOI: 10.1007/s11663-013-9961-2.

[8] Gierek, A., Karwan, T., Rojek, J. & Szymek, J. (2005). Results of test with decoperisation of slag from flash process. Ores and Non-Ferrous Metals. 50(12), 669-680 (in Polish).

[9] Bydałek, A. W., Biernat, S., Bydałek, A. & Schlafka, P. (2014). The Innovative Analysis of the Refinement Ability Exstractive Slag. International Journal of Engineering and Innovative Technology. 4(5), 186-197. ISSN: 2277-3754.

[10] Biernat, S., Bydałek, A.W. & Schlafka, P. (2012). Analysis of the possibility of estimation ecological slag propriety with use the DATA Base. Metalurgija-Metallurgy. 51(1), 59-62.

[11] Kowalczyk, J., Mróz, M., Warczok, A. & Utigard, T.A. (1995). Viscosity Viscosity of copper slags from chalcocite concentrate smelting. Metallurgical and Materials Transactions B. 26(1), 1217-1223 DOI: 10.1007/BF02654007.

[12] Bydałek, A.W. (2011). Role of carbon in the melting copper processes. Archives of Foundry Engineering. 11(SI 3/2011), 37-42.

[13] Migas, P. (2015). Analysis of the rheological behaviour of selected semi-solid slag systems in blast furnace flow conditions Archives of Metallurgy and Materials. 60(1), 85-93, DOI: 10.1515/amm-2015-0014.

[14] Wołczyński, W., Himemiya, T., Kopyciński, D. & Guzik, E. (2006). Solidification and solid/liquid interface paths for the formation of protective coatings. Archives of Foundry Engineering. 18(1/2), 359-362.

[15] Wołczyński W., Bydałek A. W. (2016), Sedimentation of copper droplets after their coagulation and growth, Archives of Foundry Engineering. 16(1/2016). 95–98.

[16] Kalisz, D., Rzadkosz, S. & Piękoś, M. (2012). Computer simulation of liquid slag reduction process. Archives of Foundry Engineering. 12(SI 1/2012), 91-96. (in Polish).

Archives of Foundry Engineering

The Journal of Polish Academy of Sciences

Journal Information


CiteScore 2016: 0.42

SCImago Journal Rank (SJR) 2016: 0.192
Source Normalized Impact per Paper (SNIP) 2016: 0.316

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 142 142 7
PDF Downloads 63 63 3