K. Nushiro et al., Analysis of pore combination in sintering by hat stage X-ray computerized tomographic scanner, ISIJ INT, 39(12), 1999, pp. 1239-1244
The influence of the raw material bed condition on pore formation in the si
nter cake was investigated by on-line observation of the sintering process
in the hot stage and quantification of the pore combination behavior. Using
a new sintering test device which employs an X-ray computerized tomographi
c scanner, on-line observation of cross-sectional images of the sinter cake
in the sintering process has become possible. When the bulk density of the
raw material bed was low, the combination of +5 mm pores was remarkable an
d large pores formed with comparative uniformity in the sintering bed. In c
ontrast, when the bulk density was high, the combination of +5 mm pores was
slight, and combination of -5 mm pores with +5 mm pores was remarkable. Th
en, large pores formed along local +5 mm pores. It is considered that this
difference in the morphology of pore formation effects the permeability and
uniformity of burning in the sintering process.