Acta Metallurgica Slovaca

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Year 2007

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Year 2007 No 3

Kizek J., Varga A., Sivec M.

HEAT EXCHANGE ANALYSIS OF SOLID BED CHARGE

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

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

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

Abstract
This work is aimed at the effect of titanium bearing materials on thermal state in the hearth of blast furnace. With the purpose of the carbo-nitrides production, the raw materials with titanium content, which protects the lining of the blast furnace hearth against wear and in that way prolonging its working life, are added into the blast furnace.
The campaign life of a blast furnace depends greatly on the lifetime of hearth refractory lining. Hearth refractories are represented mainly by carbon bricks or carbon ramming mixtures. In the analyzed blast furnace is refractory wear monitored by four levels of termocouples. Once the critical value of temperature is crossed, necessary precautions must by done e.g. charging of titanium-bearing materials in order to create a protection layer of titanium carbonitrides.
The titanium technology of blast furnace hearth protection is the best way to protect the temperature resistant furnace hearth material and to extend its working life. In any case, by an excessive use of titanium, operation problems, connected with an increase of viscosity in slag and metal, with regards to the pig iron price, as well as to the coke consumption, take place.
For the efficiency of the technology it is advisable, therefore, to thoroughly consider the factors such as the amount and the type of titanium bearing material, its price, the technology of charging the material into the furnace, optimalization of the material amount so that any operation problems, such as an increase in the coke consumption or problems with salamander and problems in the steel plant, do not occur.

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

No 3 (2007), p. 380-389