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流動層セメント焼成システムにて製造されたクリンカーの特徴
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Cement Science and Concrete Technology, No.65, 2011
529
1,000t/
*1 *2 *2
*1274-8601 585*2 551-0021 7-1-55
FAKS
1.FAKS
200t/
FAKS
1
NEDO
1,000t/ FAKS
2
2.FAKS FAKS
-
Fig. 1Outline of NSP rotary kiln and FAKSWatanabe et al., 2007
Cement Science and Concrete Technology, No.65, 2011
530
CO2NOx
NSP FAKS
3
FCK
Fig. 1
30
FBQ PBC 2
FAKS
Fig. 2
3. FAKS
3 ABC
A2
FAKS 13mm
Photo. 1
4.4. 1JIS R 5202
JCAS-01
12 4. 2 XRD
X XRD
X XPert PRO MPD
X CuKa
45kV 40mA
C3SM1M3 C2S
C3AC4AFPericlase
K2SO4K3NaSO42 f-CaO4. 312mm
0.1 -
Fig. 2 Schematic model of nucleation process in the FBK systemYuko et al., 2000
VHX-5004. 4
3,400
100cm2/g
SO3
2.0
Photo. 1Overview of clinker produced by FAKS
Cement Science and Concrete Technology, No.65, 2011
531
JIS R 5201
4. 5
3,400100cm2/g
SO3 2.0
V
A
Table 1
55 45 2 1
2
Table 1
AE
JIS A 1101
JIS A 1128
JIS A 1108
5.5. 1 Table 2
f-CaO 0.41.1 3
MgO
5. 2 XRD Table 3
A
C C3S M1/C3S
MgO C3S-M3
B C2S
2
5. 3
C Fig. 3 Fig. 6
Fig. 3
30m
Table 1Specified Mix Proportion
Sample NameW/C
S/A
Slumpcm
Air Content
Quantity of Material per Unit Volume of Concretekg/m3
Water Cement Sand 1 Sand 2 Gravel
B55 44.5 12 4.5
168 305 559 237 1,005C 168 305 559 237 1,007
B45 45.0 18 4.5
167 371 549 232 968C 167 371 549 235 968
Table 2Chemical Composition of FAKS Clinker
Sample NameChemical Composition
Ig.loss insol. SiO2 Al2O3 Fe2O3 CaO
A 0.07 0.24 22.53 5.00 3.26 64.38B 0.42 0.34 21.28 5.44 2.43 65.53C 0.23 0.28 23.26 4.71 2.73 64.77
Sample NameChemical Composition
MgO SO3 Na2O K2O TiO2 f-CaO
A 2.56 0.39 0.38 0.49 0.27 0.4B 2.81 0.62 0.18 0.52 0.23 1.1C 2.78 0.43 0.18 0.32 0.23 0.6
Sample NameModulus Mineral Composition Based on Bogue Formula
HM SM C3S C2S C3A C4AF
A 2.09 2.73 52.5 25.0 7.7 9.9B 2.25 2.70 64.9 12.1 10.3 7.4C 2.11 3.13 51.3 28.0 7.9 8.3
Cement Science and Concrete Technology, No.65, 2011
532
Fig. 4
10m
Fig. 5
FAKS1,325
1,450 100
Fig. 6
5. 4 Table 4 Fig. 7
Fig. 10 B
2
Table 3Mineral Composition of FAKS Clinker
Sample NameMineral Composition
C3S C2S C3A C4AF Periclase K2SO4 K3NaSO42 f-CaO
A 56.7 25.6 6.6 8.5 1.8 0.4 0.4 0.3B 62.0 18.1 9.6 7.0 2.1 0.3 0.7 0.1C 57.2 24.7 5.9 9.4 2.1 0.3 0.4 0.0
Sample NameRatio of Crystalline Phase in its Mineral Dierence between Rietveld Analysis and Bogue Formula
M1/C3S '/C2S ort/C3A C3S C2S C3A C4AF
A 0.21 0.07 0.38 4.2 0.7 -1.2 -1.4B 0.25 0.10 0.30 -2.8 5.7 -0.6 -0.4C 0.25 0.06 0.34 4.7 -2.3 -1.6 1.1
Fig. 6Interstitial PhaseSample C
Fig. 3Whole Texture of ClinkerSample C
Fig. 4Alite CrystalsSample C
Fig. 5Belite CrystalsSample C
Cement Science and Concrete Technology, No.65, 2011
533
B
B 2 C3S HM
Table 2
3
MgO
A
C
5. 5 Table 5
Table 6Fig. 11 Fig. 12
Fig. 9Flow of FAKS Cement
Fig. 8Setting Time of FAKS Cement
Fig. 7 Density and Specific Surface Area of FAKS Cement
Table 4Results of Physical Tests for FAKS Cement
Sample NameDensityg/cm3
Specic Surface Areacm2/g
Setting Time TestFlowmmWater Content
Initial Setting Time Final Setting Time
A 3.15 3,640 29.2 2-45 3-48 212B 3.12 3,570 30.4 1-31 2-27 206C 3.15 3,630 30.0 2-02 3-08 206
Sample NameCompressive StrengthN/mm2 Bending StrengthN/mm2
3 days 7 days 28 days 91 days 3 days 7 days 28 days 91 days
A 32.2 39.8 53.3 61.7 6.7 7.6 8.6 9.1B 34.2 42.6 54.8 60.8 7.2 8.1 8.7 8.2C 28.4 38.7 53.9 65.7 5.9 7.4 8.8 9.7
Fig. 10Compressive Strength of FAKS Cement
Cement Science and Concrete Technology, No.65, 2011
534
6.0
2
B
6.FAKS
1 T. Yuko et al.New clinker formation process
by the fluidized bed kiln system, Cement and
Concrete Research, vol. 30, pp. 1113-11202000
2
165
pp. 6-92007
Table 6Compressive Strength of Concrete
Sample Name
W/C
3 days 7 days 28 days 91 days
Measured Value
Compensated Value
Measured Value
Compensated Value
Measured Value
Compensated Value
Measured Value
Compensated Value
B55-1
55
11.9 11.7 17.6 17.2 23.6 23.1 28.2 27.6B55-2 11.9 11.2 18.5 17.5 23.6 22.3 30.0 28.4C55-1 12.9 12.3 19.7 18.7 28.0 26.6 36.9 35.1C55-2 14.5 14.2 20.0 19.6 28.5 27.9 37.4 36.7
B45-1
45
20.8 22.7 26.9 29.3 34.0 37.1 39.8 43.4B45-2 20.3 20.9 25.8 26.6 33.2 34.2 39.8 41.0C45-1 21.3 21.3 29.6 29.6 37.2 37.2 49.2 49.2C45-2 21.5 22.7 29.6 31.2 37.3 39.4 49.5 52.2
UnitN/mm2
Table 5Property of Fresh Concrete
Sample NameW/C
Slumpcm Air Content
Temprature of ConcreteMeasured Value Compensated Value
B55-1
55
5.6 6.6 5.6 21.0B55-2 4.1 6.9 4.9 21.1C55-1 5.2 7.7 5.0 20.7C55-2 4.8 5.8 5.6 20.7
B45-1
45
8.3 3.8 7.8 21.5B45-2 7.2 5.7 6.6 21.7C45-1 8.4 8.4 6.0 21.2C45-2 9.2 6.5 7.1 21.2
Fig. 11 Compressive Strength of Concrete with W/C of 55
Fig. 12 Compressive Strength of Concrete with W/C of 45
Cement Science and Concrete Technology, No.65, 2011
535
Shigehiro ANDO*1, Hiroshi NOMURA*2 and Maki SEKIHIRO*2
*1 SUMITOMO OSAKA CEMENT Co., Ltd., Cement/Concrete Research Laboratory585, Toyotomi-cho, Funabashi-shi, Chiba 274-8601, Japan
*2 SUMITOMO OSAKA CEMENT Co., Ltd., Cement/Concrete Research Laboratory7-1-55, Minamiokajima, Taisyo-ku, Osaka-shi, Osaka 551-0021, Japan
ABSTRACTFluidized bed Advanced cement Kiln SystemFAKSis an innovative cement manufacturing technology with higher reaction efficiency than any other kiln system. A FAKS plant with the capacity of 1,000 tons/day was constructed by Kawasaki Plant Systems in the International Coal Utilization Project by New Energy and Industrial Technology Development OrganizationNEDOin Shandong Province, China. And its performance tests were conducted. In this study, clinker samples from a FAKS plant were examined by Chemical Analysis, Rietveld Analysis and Optical Microscopy. Moreover, physical tests for cement and tests for slump, air content and compressive strength of concrete were performed to confirm their qualities. As a result, it is clear that clinker produced by FAKS was burned as well as by conventional rotary kiln system, though there are differences in the process of clinker minerals formation, burning conditions such as temperature and retention time in the kiln, etc. Compared among the clinker samples from a FAKS plant, there was a significant difference in especially the increase of compressive strength in the long term. It is obvious that the physical property of cement could have been affected by the difference of mineral composition in our tests. In addition, it is possible that it might have been affected by the difference of a melting state of minor constituents such as MgO in clinker minerals.
KEY WORDSFluidized bed advanced cement kiln systemFAKS, Clinker
CHARACTERIZATION OF CLINKER PRODUCED BY FLUIDIZED BED ADVANCED CEMENT KILN SYSTEM