Reagents Activity in a Copper Droplets / Post-Processing Slag Suspension

• Autorzy: Wołczyński W. , Karwan-Baczewska J. , Najman K. , Bydałek A. W.

Identyfikatory

DOI

10.1515/afe-2016-0068

• Języki publikacji: EN

Abstrakty

EN

The suspension of the copper droplets in the post-processing slag taken directly from the KGHM-Polska Miedź S.A. Factory (from the direct-to-blister technology as performed in the flash furnace) was subjected to the special treatment with the use of the one of the typical industrial reagent and with the complex reagent newly patented by the authors. This treatment was performed in the BOLMET S.A. Company in the semi-industrial conditions. The result of the CaCO3, and Na2CO3 chemicals influence on the coagulation and subsequent sedimentation of copper droplets on the crucible bottom were subjected to comparison with the sedimentation forced by the mentioned complex reagent. The industrial chemicals promoted the agglomeration of copper droplets but the coagulation was arrested / blocked by the formation of the lead envelope. Therefore, buoyancy force forced the motion of the partially coagulated copper droplets towards the liquid slag surface rather than sedimentation on the crucible bottom. On the other hand, the complex reagent was able to influence the mechanical equilibrium between copper droplets and some particles of the liquid slag as well as improve the slag viscosity. Finally, the copper droplets coagulated successfully and generally, were subjected to a settlement on the crucible bottom as desired / requested.

Słowa kluczowe

EN

slag; liquid slag; post-processing; coagulation; sedimentation; copper droplets; flash furnace

PL

żużel; koagulacja; sedymentacja; miedź; piec typu flash

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2016
• Tom: Vol. 16, iss. 3
• Strony: 147--150
• Opis fizyczny: Bibliogr. 16 poz., il.

Twórcy

autor

Wołczyński W.

• Institute of Metallurgy and Materials Science, Reymonta 25, 30 059 Kraków, Poland

autor

Karwan-Baczewska J.

• AGH University of Science and Technology, Mickiewicza 30, 30 059 Kraków, Poland

autor

Najman K.

• BOLMET S.A. Company, Wiechlice 1, Poland

autor

Bydałek A. W.

• University of Zielona Góra, Podgórna 50, 65 246 Zielona Góra, Poland

Bibliografia

• [1] Bydałek, A.W., Wołczyński, W., Bydałek, A., Schlafka P. & Kwapisiński, P. (2015). Analysis of separation mechanism of the metallic phase of slag in the direct-to-blister process, Archives of Metallurgy and Materials. 60, 2347-2353.
• [2] 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, 319-322.
• [3] Nowakowski, J. (1976). Thermodynamic problems in copper fire refining. Metalurgia i Odlewnictwo. 2, 3-14.
• [4] Bydałek, A.W. (2011). Role of carbon in melting copper processes. Archives of Foundry Engineering. 11(special 3), 37-42.
• [5] Migas, P. & Karbowniczek, M. (2010). Interactions between liquid slag and graphite during the reduction of metallic oxides. Archives of Metallurgy and Material. 55. 1147-1157.
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• [7] Migas, P. (2015). Analysis of the rheological behavior of selected semi-solid slag systems in blast furnace flow conditions. Archives of Metallurgy and Materials. 60, 85-93.
• [8] Bydałek, A.W., Bydałek, A., Najman, K. & Schlafka, P. (2008). The estimation of slag refining features for the Cu-Si alloys melting process. Archives of Foundry Engineering. 8(special 1), 41-44.
• [9] Takeda, Y. & Yazawa, A. 1988). Fire Refining of Gruel Copper by Alkaline Carbonate Fluxes. Transactions of the Japan Institute of Metals. 29, 224-232.
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• [12] Krasicka-Cydzik, E. (2001). Copper de-oxidation with calcium carbide melts: electrochemical reactions. Journal of Applied Electrochemistry. 31, 1155-1161.
• [13] Bydałek, A.W., Bydałek, A., Bydałek, F., Kurzydłowski, K.J., Wołczyński, W.S. Reagent for the copper removal from the metallurgical slags, Polish Patent: P 404363/2015.
• [14] Wołczyński, W. & Bydałek, A.W. (2016). Sedimentation of Copper Droplets after their Coagulation and Growth. Laboratory Scale. Archives of Foundry Engineering. 16(1), 95-99.
• [15] Wołczyński, W. & Bydałek, A.W. (2015), Gravity / Buoyancy Competition within Coagulation of Copper Droplets in Slag. Archives of Materials Science and Engineering. 76, 35-45.
• [16] Wołczyński, W. (2015). Back-diffusion in crystal growth. Eutectics. Archives of Metallurgy and Materials. 60, 2403-2407.

Uwagi

PL

Opracowane ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.