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Title of Journal: Metall and Materi Trans B

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Abbravation: Metallurgical and Materials Transactions B

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Springer US

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DOI

10.1016/j.bbapap.2014.02.019

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1543-1916

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Effect of Microwave Treatment Upon Processing Ooli

Authors: HuiQing Tang WeiDi Liu HuanYu Zhang ZhanCheng Guo
Publish Date: 2014/06/12
Volume: 45, Issue: 5, Pages: 1683-1694
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Abstract

Influence of microwave treatment on the previously proposed phosphorus removal process of oolitic high phosphorus iron ore gaseous reduction followed by melting separation has been studied Microwave treatment was carried out using a hightemperature microwave reactor Model MSWH Untreated ore fines and microwaved ore fines were then characterized by Xray diffraction XRD scanning electron microscopy SEM energy dispersive spectroscopy EDS and thermogravimetric analysis TGA Thereafter experiments on the proposed phosphorus removal process were conducted to examine the effect of microwave treatment Results show that microwave treatment could change the microstructure of the ore fines and has an intensification effect on its gaseous reduction by reducing gas internal resistance increasing chemical reaction rate and postponing the occurrence of sintering Results of gaseous reduction tests using tubular furnace indicate both microwave treatment and high reduction temperature high as 1273 K 1000 °C are needed to totally break down the dense oolite and metallization rate of the ore fines treated using microwave power of 450 W could reach 90 pct under 1273 K 1000 °C and for 2 hours Results of melting separation tests of the reduced ore fines with a metallization rate of 90 pct show that in addition to the melting conditions in our previous studies introducing 3 pct Na2CO3 to the highly reduced ore fines is necessary and metal recovery rate and phosphorus content of metal could reach 83 pct and 031 mass pct respectively

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  2. Investigation into Oxygen-Enriched Bottom-Blown Stibnite and Direct Reduction
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  6. Laboratory Carburization of Direct-Reduced Iron in CH 4 -H 2 -N 2 Gas Mixtures, and Comparison with Industrial Samples
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  10. Conditions for the Efficient Crushing of the As-Cast Microstructure of 30Cr10Ni Duplex Stainless Steel
  11. Coating tungsten composites for improved low temperature ductility
  12. Vaporization Studies from Slag Surfaces Using a Thin Film Technique
  13. Analysis of Microstructure Effects on Edge Crack of Thin Strip During Cold Rolling
  14. Separation of Phosphorus- and Iron-Enriched Phase from CaO-SiO 2 -FeO-MgO-P 2 O 5 Melt with Super Gravity
  15. A Study for Initial Solidification of Sn-Pb Alloy during Continuous Casting: Part I. The Development of the Technique
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