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This research try to use sintering with high temperature to
solve the problem of great amount of mercury contained sludge.
the directions of this research include the effects of pelliti-
zative pressure、sintering temperature and time that affect
the physicochemical characteristic of the sample and monitor
the chage of interior compose of sample after high temperature
sintering and discuss the mass transfer of mercury during the
sintering process. The operation conditions vary four pelliti-
zative pressure (2000~5000psi)、four sintering time(5~30 mins)
and five sintering temperature (900~1200℃). The discuss the
various pellitizative pressure、sintering temperature and
sinter- ing time that affect the sintering treatment with the
mass loss of sample after sintering-temperature varion、
pellitizative pre- ssure analysis mass transfer of mercury
leach test and investi- gating fine configuration.From the
experiment results, effect of volume reduction of sample
approach an fixed value after 20 mins sintering.When the
temperature is during 950℃ between 1100℃ , the density of
sample is lower than the begin-forming density. From the TCLP
test results, the leaching of mercury is lower than that of
standard test. It suggests that the mercury contained- sludge
has been transformed from hazardous solid waste into general
solid waste and suitable of landfill treatment.When the
temperature is during 950℃ between 1200℃, the pellitizative
pressure of sample is lower than that of begin-forming sample,
and sample expand and break.So, if the advanced
resourcification and reuse are expected, it is necessary to
remove the organic in mercruy contained-sludge before
pellitizative and add the chemi- cal agent to increase the
pellitizative pressure at sample.
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