SiC ceramic membrane specifically for chemical industry/strong acids/bases treatment
Features | |
base /intermediate/filtering layer material | 100% Silicon carbide |
membrane structure | asymmetrical |
porosity 100% | >45% |
hardness | 2930±80(Vickers hardness kg/mm2) |
Temperature tolerance | 800 ℃ |
Chemical resistance | PH 0~14 |
Solvent | Completely stable |
Oxidizing agent | Any concentration |
Chlorine content | No limit |
Max positive trans membrane pressure | 3bar |
Max negative trans membrane pressure | 10bar |
Outstanding chemical stability of SiC membrane
Item | Concentration | Medium temperature | Sic membrane consumption (mg/cm2/year) | One year later | Alumina membrane consumption (mg/cm2/year) | One year later |
H2SO4 | 98 | 100 | 1.8 | intact | 65 | Completely break |
HNO3 | 70 | 100 | <0.2 | intact | 7 | Patrial break |
H3PO4 | 85 | 100 | <0.2 | intact | <1000 | Completely break |
HCl | 25 | 70 | <0.2 | intact | 72 | Completely break |
HF | 53 | 25 | <0.2 | intact | 20 | Completely break |
HF + HNO3 | 10+57 | 25 | <0.2 | intact | 16 | Completely break |
NaOH | 50 | 100 | 2.5 | intact | 75 | Completely break |
KOH | 45 | 100 | <0.2 | intact | 6 | Patrial break |
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