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Member Since
2006
Pingxiang XINTAO Chemical Packing Co.,Ltd
Ceramic Saddle fro RTO'
IntroductionCeramic saddles for RTO’s are mostly used as heat transfer media and are of much higher density and require good high temperature resistance.In fact, some customers also accept saddles for chemical and petrochemical use in RTO’s, because both the saddles have nearly same physical and chemical properties. Chemical composition
SiO2
Al2O3
Fe2O3
CaO
K2O+Na2O
>70%
23-30%
<1%
<1-2%
<2-4%
Physical properties
Index
Value
Specific gravity(g/cm3)
2.25-2.35
Water absorption(%)
<0.5
Acid-resisting strength, %Wt. Loss (ASTMc279)
<4
Firing temperature(℃)
1280-1320
Softening point(℃)
>1400
Density(kg/m3)
2350
Technical data
Spec. (inch)
Spec. (mm)
Approx. weight (kg/m3)
Surface area (m2/m3)
Free volume (%)
Packing factor (l/ft)
1/2”
12
720
623
71.7
200
3/4”
19
688
334
73
130
1”
25
253
85
1.5”
38
640
164
75
50
2”
577
115
77.4
37
3”
76
92
75.5
24
Advantage These saddles are made from chemical porcelain and have excellent resistance to acids except in the case of hydrofluoric acid. Moisture absorption must less than half a percent. The porcelain’s specific gravity is 2.3-2.4g/cm3 and an average heat capacity (between 20℃ and 500℃ of 0.22 cal/g.℃) XINTAO ceramic saddles for RTO’s softening point is 1400℃ min. And they show good thermal shock resistance during repeated cycling between 20℃ and 820 ℃. Thermal shock test for saddles for RTO’S For example shipping the saddles over 80 M3: Randomly pick 100-200 pieces of ceramic saddles for RTO’s from the batch or shipment For each sample selected, heat it up to 820℃ and maintain them at this temperature for 30 minutes Drop the hot pieces into cold 20℃ water Repeat steps 2 & 3 for10 times on each and every piece in the sample lot. Examine the pieces and count the percent that show clear signs of breakage and/or cracking. Our standard is “less” than seven (7%) percent.