Sedimentation of Copper Droplets after their Coagulation and Growth. Laboratory Scale

Journal title

Archives of Foundry Engineering




No 1

Publication authors


Innovative foundry technologies and materials ; Product development ; Copper droplets suspension ; Droplets coagulation ; Droplets solidification

Divisions of PAS

Nauki Techniczne


Archives of Foundry Engineering continues the publishing activity started by Foundry Commission of the Polish Academy of Sciences (PAN) in Katowice in 1978. The initiator of it was the first Chairman Professor Dr Eng. Wacław Sakwa – Corresponding Member of PAN, Honorary Doctor of Czestochowa University of Technology and Silesian University of Technology. This periodical first name was „Solidification of Metals and Alloys” , and made possible to publish the results of works achieved in the field of the Basic Problems Research Cooperation. The subject of publications was related to the title of the periodical and concerned widely understand problems of metals and alloys crystallization in a casting mold. In 1978-2000 the 44 issues have been published. Since 2001 the Foundry Commission has had patronage of the annually published “Archives of Foundry” and since 2007 quarterly published “Archives of Foundry Engineering”. Thematic scope includes scientific issues of foundry industry:

  • Theoretical Aspects of Casting Processes,
  • Innovative Foundry Technologies and Materials,
  • Foundry Processes Computer Aiding,
  • Mechanization, Automation and Robotics in Foundry,
  • Transport Systems in Foundry,
  • Castings Quality Management,
  • Environmental Protection.


The suspension of copper droplets in the slag is considered. The copper/slug suspension is delivered as the product from the direct-toblister

process which is applied in the KGHM – Polska Miedź (Polish Copper) S.A. factory. The droplets / slag suspension was treated by

a special set of reagents (patented by the authors) to improve the coagulation process. On the other hand, the observations are made to

estimate if the melting / reduction process in the furnace is sufficiently effective to avoid a remaining of carbon in the copper droplets.

The coagulation process was carried out in the crucible (laboratory scale). However, conditions imposed to the coagulation / solidification

process in the laboratory scale were to some extent similar to those applied usually in the industry when the suspension is subjected to the

analogous treatment in the electric arc-furnace. Some suggestions are formulated how to improve the industrial direct-to-blister process.


The Katowice Branch of the Polish Academy of Sciences




Artykuły / Articles


ISSN 2299-2944


Migas (2010), Interactions between liquid slag and graphite during the reduction of metallic oxides of Metallurgy and Materials, Archives, 1147, ; Migas (2015), Analysis of the rheological behavior of selected semi - solid slag systems in blast furnace flow conditions of Metallurgy and Materials, Archives, 85, ; Bydałek (2015), Optimizing of Work Arc Furnace to Decopperisation of Flash Slag of Foundry Engineering, Archives, 15, 21. ; Bydałek (2011), Role of carbon in the melting copper processes of Foundry Engineering, Archives, 11, 37. ; Bydałek (2015), The concept of slag decopperisation in the flash furnace process by use of complex reagents of Metallurgy and Materials, Archives, 319, ; Wołczyński (2015), Back - diffusion in crystal growth Eutectics of Metallurgy and Materials in print, Archives.