Blast-furnace efficiency on a high-sinter charge

Yu. L. Dobromirov; A. I. Vasyuchenko; I. A. Fedotov; A. V. Sidorskii; N. A. Gladkov

doi:10.1007/bf02910624

Blast-furnace efficiency on a high-sinter charge

Metallurgist ◽

10.1007/bf02910624 ◽

1997 ◽

Vol 41 (7-8) ◽

pp. 257-260 ◽

Cited By ~ 1

Author(s):

Yu. L. Dobromirov ◽

A. I. Vasyuchenko ◽

I. A. Fedotov ◽

A. V. Sidorskii ◽

N. A. Gladkov

Keyword(s):

Blast Furnace ◽

Sinter Charge ◽

Furnace Efficiency

Download Full-text

Mineral Matter in Nigerian Coals and Tar Sand and Their Implications in Binary Blend Formulation and Co-Carbonisation

Hungarian Journal of Industry and Chemistry ◽

10.1515/hjic-2015-0015 ◽

2015 ◽

Vol 43 (2) ◽

pp. 91-95

Author(s):

Solomon A. Ryemshak ◽

Aliyu Jauro ◽

Istifanus Y. Chindo ◽

Eno O. Ekanem

Keyword(s):

Blast Furnace ◽

Silicon Dioxide ◽

Coal Sample ◽

Coke Quality ◽

Mineral Matter ◽

X Ray Diffraction ◽

Binary Blend ◽

X Ray ◽

Furnace Efficiency ◽

Sulphur Trioxide

Abstract In blend simulation for metallurgical applications, the knowledge of the type and amount of mineral matter in coal and other additives, as well as their derivatives as a result of combustion is important in assessing the coke quality and blast furnace efficiency. X-ray diffraction (XRD) and X-ray fluorescence (XRF) techniques were used in assessing the mineral matter contents and oxides produced up on combustion of the following Nigerian coals: Afuze (AFZ), Garin-Maiganga (GMG), Lamza (LMZ), Shankodi-Jangwa (SKJ), and Chikila (CHK) in addition to a tar sand from Ondo (OTS). Coal samples from Afuze (AFZ) and Chikila (CHK) were found to contain quartz, hematite, and anhydride as the dominant minerals. The Garin-Maiganga coal sample (GMG) was found to contain quartz, magnetite, anhydride, and magnesite. Quartz and hematite were dominant in Lamza coal (LMZ), while Shankodi-Jangwa coal (SKJ) is associated with dolomite and quartz. The bitumen was found to contain quartz, kaolinite, and rutile. The XRF analysis revealed the presence of sixteen elemental oxides: the most abundant being silicon dioxide, ferric oxide, aluminium oxide, sulphur trioxide, calcium oxide, and titanium oxide. Amongst the coal samples, CHK, AFZ and GMG coals have low acidic/basic and basic/acidic ratios, which indicate that cokes originating from them may form the least slag with the best blast furnace efficiency.

Download Full-text