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Year 2002 No 1

NIESLER M.
METHOD OF TESTING OF REACTIVITY OF COKE WITH DIFFERENT GRAIN SIZES AND ITS VERIFICATION UNDER INDUSTRIAL CONDITIONS
Keywords: coke reactivity|reactivity testing|grain size|blast furnace|coke|
No 1 (2002), p. 5-17
  mag01.pdf (111 kB)
mag01_eng.txt (908 B)  

Mulak W., Chojnacka M., Sułek B.
ENHANCEMENT OF NICKEL SULPHIDES LEACHING BY ACTIVATED CARBON
Keywords: hydrometallurgy|millerite|leaching|activated carbon|
No 1 (2002), p. 18-23
  mag02.pdf (90 kB)
mag02_eng.txt (737 B)  

Kohútek I., Käerdi H., Besterci M., Kulu P., Mikli V., Velgosová O.
CHARACTERISATION OF MORPHOLOGY OF POWDER PARTICLES
Keywords: powder particles|morphology and geometrical shape parameter|
No 1 (2002), p. 24-29
  mag03.pdf (154 kB)
mag03_eng.txt (1 kB)  

Blacha L., Steindor J., Sosnowski R.
THE INFLUENCE OF AN APPLIED ATMOSPHERE ON PB EVAPORATION RATE FROM CU-PB ALLOYS
Keywords: Metal refining|Copper metallurgy|Lead metallurgy|
No 1 (2002), p. 30-34
  mag04.pdf (194 kB)
mag04_eng.txt (1 kB)  

Marasová D., Najajreh A.
SOLUTION OF WIRE ROPE NET FOR SAFETY PLATFORMS BY FINITE ELEMENT METHOD
Keywords: cable net platform|finite element method|stress-strain states|Cosmos/M|
No 1 (2002), p. 35-42
  mag05.pdf (166 kB)
mag05_eng.txt (915 B)  

Trišč A., Čurilla J., Kendera J.
OPTIMISATION OF COLD BONDED PELLETS PRODUCTION FROM BOF SLUDGES AND DUSTS
Keywords: sludge|dust|pellets|cement|
No 1 (2002), p. 43-49
  mag06.pdf (195 kB)
mag06_eng.txt (1 kB)  

Petrík J., Szarvasy P., Špeťuch V.
THE INFLUENCE OF COOLING RATE AND MN AND FE CONTENT ON THE STRUCTURE AND MECHANICAL PROPERTIES OF AL-SI ALLOY
Keywords: AlSi alloy|cooling rate|structure|mechanical properties|
No 1 (2002), p. 50-58
  mag07.pdf (169 kB)
mag07_eng.txt (5 kB)  

Bauer V., Škvarla J., Zeleňák F.
PRESENT STATE OF ORE MINING IN SLOVAK REPUBLIC
Keywords: mining|gold ore|deposit|marketing|
No 1 (2002), p. 59-68
  mag08.pdf (204 kB)
mag08_eng.txt (1 kB)  

Gülbas M., Kammel R., Lieber H.-W.
IMPROVEMENTS OF HYDROMETALURGICAL PROCESSESBY APPLICATION OF THE ACID RETARDATIONPROCEDURE - ACTUAL SITUATION AND DEVELOPMENTS
Abstract
Metal cations can be separated from free acids by a diffusion process which is carried out by feeding the spent solution into a particle bed of a special ion exchange resin. The metal cations are passing the resin bed immediately while the free acid to a high degree is eluated from the resin afterwards just by use of water. Therefore, this procedure has been termed acid retardation.
Due to the fact, that valuable acids can be recovered in this way, equipments for acid retardation have been applied successfully during the past few years in the metal finishing industry, mainly for the regeneration of solutions for scale removal, pickling, acid dipping, bright dipping, anodizing, chemical machining, etc.
For the application of this procedure in hydrometallurgy, investigations have been started for the separation of Mg and Mn from electrolytes in zinc winning plants as well as for the removal of As from spent electrolytes in copper refineries. Results of these research projects will be reported under technical and economical aspects.

Keywords: hydrometallurgy|acid retardation procedure|pickling solution|acid waste solutions|ecological aspects|economical aspects|
No 1 (2002), p. 69-76
  mag09.pdf (101 kB)
mag09_eng.txt (1 kB)