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Year 2007 No 3

Kizek J., Varga A., Sivec M.
HEAT EXCHANGE ANALYSIS OF SOLID BED CHARGE
Keywords: heat exchange|heat exchange coefficient|solid bed charge|experimental installation|shaft furnace|
No 3 (2007), p. 390-395
  mag09.pdf (2 MB)
mag09_eng.txt (2 kB)  

Halama M., Ševčíková J.
DEVELOPMENT OF METHODOLOGY FOR MEASURING OF POTENTIAL GRADIENT MAPS SERVED FOR CORROSION RESEACH
Keywords: atmospheric corrosion|potential distribution|corrosion potential maps|
No 3 (2007), p. 396-401
  mag10.pdf (329 kB)
mag10_eng.txt (2 kB)  

Kvačkaj T., Molnárová M., Mišičko R.., Fujda M.
INFLUENCE OF TERMAL CONDITIONS ON FORMATION OF DUAL PHASE STRUCTURES
Keywords: Controlled rolling|controlled cooling|structure|ferrite|martensite|pearlite|
No 3 (2007), p. 320-328
  mag01.pdf (732 kB)
mag01_eng.txt (2 kB)  

Longauer S, Vojtko M., Girman V., Longauerová M., Janák G.
VARIABILTY OF PRODUCTS OF MARTENSITE DECOMPOSITION IN CuZnAl SHAPE MEMORY ALLOYS
Keywords: shape memory|CuZnAl alloys|bainite|martensite|-phase decay|martensite transformation|pressing to water|
No 3 (2007), p. 329-335
  mag02.pdf (628 kB)
mag02_eng.txt (2 kB)  

Nižník Š., Zavacký M., Janák G., Furman Ľ.
NEW POSSIBILITY OF HYDROGEN TRAPS FORMATION IN DEEP DRAWING IF STEEL SHEETS FOR ENAMELING
Keywords: enameled steel sheet|fish scales|hydrogen traps|sulphide precipitation|
No 3 (2007), p. 336-344
  mag03.pdf (370 kB)
mag03_eng.txt (2 kB)  

Rusňáková V., Kijac J., Rusňák G.
SLAG MELTING TEMPERATURE IN A TUNDISH
Keywords: continuous casting|cover slag|melting temperature|ternary diagram|
No 3 (2007), p. 345-352
  mag04.pdf (2 MB)
mag04_eng.txt (2 kB)  

Fröhlichová M., Fröhlich L., Borovský T.
ANALYSE OF TITANIUM EFFECT ON THERMAL STATE IN THE HEARTH OF BF
Keywords: Blast furnace|hearth|refractory wear|titanium bearing raw material|titanium carbonitrides|protective layer|
No 3 (2007), p. 353-359

Vadász P., Tomášek K., Rabatint Ľ.
PREDICTION OF CORROSION PROFILE OF REFRACTORIES BY FeO – SiO2 MELT
Keywords: corrosion|slag|density|surface tension|structure|
No 3 (2007), p. 360-371
  mag06.pdf (341 kB)
mag06_eng.txt (2 kB)  

Bučková S., Lukáč L.
INFLUENCE OF PRIMARY METHODS ON NOX EMISSIONS REDUCTION DURING GAS FUELS COMBUSTION
Keywords: reburning|gasification|energogas|
No 3 (2007), p. 372-379
  mag07.pdf (1 MB)
mag07_eng.txt (2 kB)  

Plešingerová B., Knežová L., Porvaz Š., Kiselovič J.
RE-CYCLED WATER QUALITY USED IN CERAMIC TILE MASSES
Keywords: ions concentration|flocculant|coagulation|waste water and slurry|recycling water|
No 3 (2007), p. 380-389
  mag08.pdf (556 kB)
mag08_eng.txt (2 kB)  

Havlík M., Petrík J., Palfy P.
MICROHARDNESS MEASUREMENT CAPABILITY
Keywords: MSA|capability|microhardness|
No 3 (2007), p. 402-411
  mag11.pdf (447 kB)
mag11_eng.txt (6 kB)  

Senčáková L., Virčíková E.
LIFE CYCLE ASSESSMENT OF PRIMARY ALUMINIUM PRODUCTION
Keywords: life cycle assessment|environmental impacts|primary aluminium production|environmental aspect|
No 3 (2007), p. 412-419
  mag12.pdf (333 kB)
mag12_eng.txt (2 kB)  

Habashi F.
NEW FRONTIERS IN EXTRACTIVE METALLURGY
Keywords: extractive metallurgy|
No 3 (2007), p. 420-433
  mag13.pdf (1 MB)
mag13_eng.txt (838 B)  

Jalkanen H.
CHALLENGE OF MODELLING OF HIGH-TEMPERATURE MATERIALS PROCESSES; OXYGEN CONVERTER PROCESS (LD, BOF) AS AN EXAMPLE
Keywords: high temperature processes|oxygen converting|LD|modelling|simulation|
No 3 (2007), p. 434-446
  mag14.pdf (1 MB)
mag14_eng.txt (1 kB)  

Lundström M., Aromaa J., Forsén O., Haavanlammi L.
CONCENTRATED CUPRIC CHLORIDE SOLUTIONS: POSSIBILITIES OFFERED IN COPPER PRODUCTION
Abstract
This study presents the advantages of chloride media as a leaching media for sulfide minerals. The advantage in using cupric chloride solution as a leaching media is its ability to form complexes, which increases the redox potential and thus the oxidative power of the solution remarkably. The thermodynamics of the solution are discussed and the prevailing species suggested. Cuprous ion can be suggested to be present mostly as [CuCl3]2- but also partly as [CuCl2]-. The complexation of cupric ion is more inconsistent, but it can be suggested that cupric ion is not totally in a complex form. With lower chloride concentrations Cu2+ may not form complexes. At high Cl concentrations [CuCl]+ or [CuCl3]- and [CuCl4]2- may be present. Some chloride based processes are presented and the advantages of them are compared. The most important processes are CLEAR, CYMET and HydroCopper®, of which the latter has recently reached the commercial scale. One of the advantages in HydroCopper® is that 95 % of the sulfur can be turned into the elemental form. Also the five step solution purification starting from Cu2+ and sulfate removal, silver removal, neutralization, ion exhange and ending in Cu2O precipitation is a good base for high quality copper production. The unit processes used in HydroCopper® are not new, but the innovative combination of known unit processes makes HydroCopper® unique.

Keywords: Chloride leaching processes|thermodynamics|cupric chloride|sodium chloride|chalcopyrite|HydroCopper®|
No 3 (2007), p. 447-459
  mag15.pdf (1 MB)
mag15_eng.txt (1 kB)  

Brehuv J., Magula R.
KNOWN AND UNKNOWN MINING-PROCESSING ACTIVITIES OF RISTOCRATIC FAMILY „DE SOÓSO“
Keywords:
No 3 (2007), p. 460-464
  mag16.pdf (963 kB)