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(?)????(Micromeritics)

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... Microsoft 3.0 Micromeritics ... – PowerPoint PPT presentation

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Title: (?)????(Micromeritics)


1
???
2
?????????????
  • ???????????70-80
  • ????????????
  • ???????????,?????

???
3
(?)????(Micromeritics)
  • ???????????????,?????
  • ? ?
  • ????????????
  • ???1um-10mm??
  • ????(primary particles)
  • ????(second particles)
  • ?????????????????????

???
4
???????(size and distribution)
  • ???????
  • ?????????????(???????)
  • ???(??-???-????-)?

???
5
???????(size and distribution)
  • ???????
  • ??????????(????????)
  • ???Stocks?(???????)
  • ????????????(-???)
  • ??????,??????
  • ???????(??-???-???-???-)
  • ???(?????)
  • ???(?????????)

???
6
???????(size and distribution)
  • ?????????
  • ??????-?? (?????)
  • ??????-????(?????)

???
7
???????(size and distribution)
  • ??????? ????µm
  • ??/????????? 0.2-/0.001-
  • ??????? 40
  • ?????????? 0.5-200
  • ????????? 1-600
  • ?????????? 0.0006-
  • ????????(???) 2-50
  • ????/???????? 1-100/0.03-1

???
8
???????(size and distribution)
  • ???????
  • ?????????????????
  • ????????????
  • ????????????
  • ????/????????????????????
  • ???????????,????,??????

???
9
????(Particle shape)
  • ?????????????????????????????
  • ??????????????????
  • ??????
  • shape index(????)
  • degree of sphericility(???,pD2/L)
  • degree of circularity(???)
  • shape factor(????)
  • ??-(V/D3)????-(S/D2)?????-
  • coefficient rugosity(????)

???
10
???????(Specific surface area)
  • ??????????(??????????)
  • ??????(??????????)
  • ????????????????????
  • ???????????????

???
11
?????????(Density and porosity)
  • ????? ?W/V
  • ??V
  • ???Vt????????(??????)
  • ???Vg???????(???????V)
  • ???V??????????????
  • ????
  • ???????????(?)?????????
  • ????

???
12
?????????
  • ????
  • ???(true density) ?tW/Vt
  • ???(granule density) ?gW/Vg
  • ???(bulk density) ?bW/V
  • ?????(?????)
  • ???????????????

???
13
?????????
  • ??????(Porosity)?????????????
  • ?????
  • e?(Vg-Vt)/ Vg 1-?g/?t
  • e?(V-Vg)/ V 1-?b/?g
  • e?(V-Vt)/ V 1-?b/?t
  • ??????, ??,????,??????
  • ??????
  • ??????
  • ??????

???
14
??????????
  • ??????(Flowability)
  • ??????????(200um),??,???,??,????
  • ???(angle of repose)
  • ???????????????????????
  • ?????,?????
  • ????

???
15
??????????
  • ??(flow velocity)
  • ????????????????
  • ????
  • ????,?????

???
16
??????????
  • ???/????
  • ????
  • C((?f-?0)/?f)?100
  • C(1-?0/?f)?100
  • (?f????/ ?0???)
  • C??,?????,????,?????,????
  • 20??,????,????,40??,??

???
17
??????????
  • ??????
  • ??? ????????? ? V / W
  • ??? ????????? ? W / V
  • ???????????????? e(V-Vt)/ V
  • ???????????????? e(V-Vt)/ Vt
  • ?????????????? gVt/V1-e
  • ?????20,?????80

???
18
??????????
  • ???????
  • ?????????,????,??
  • ???????
  • ?????????????,??

???
19
???????
  • ??Moisture absorption, hydroscopic
  • ????????????????
  • ?????????gt?????????
  • ??,????
  • 1.??????(Critical relative humidity, CRH)
  • ??????????????????
  • ?????????CRH,??????
  • CRH?,??????

???
20
???????
  • ?????
  • ?????????Elder??
  • CRHABCRHACRHB
  • ?????
  • ??????????
  • ??????
  • ??????

???
21
???????(Dissolution)
  • Noyes-Whitney??
  • dC/dtKS(Cs-C)
  • KD/Vh
  • ???
  • dC/dtKSCs

???
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