Description
High-purity green silicon carbide micropowder is the primary sintering raw material for manufacturing all core components of SiC ceramic pumps. It features ultra-low iron and magnetic impurities, uniform particle size distribution and complete crystal structure, which guarantees high density, compactness and excellent air tightness after high-temperature sintering.
Black silicon carbide properties:
| TYPICAL CHEMICAL ANALYSIS | TYPICAL PHISICAL PROPERTIES | ||
| SiC | ≥98% | Hardness: | Mohs:9.15 |
| SiO2 | ≤1% | Melting Point: | Sublimes at 2250 ℃ |
| H2O3 | ≤0.5% | Maximum service temperature: | 1900℃ |
| Fe2O3 | ≤0.3% | Specific Gravity: | 3.2-3.45 g/cm3 |
| F.C | ≤0.3% | Bulk density(LPD): | 1.2-1.6 g/cm3 |
| Magnetic content | ≤0.02% | Color: | Black |
| Particle shape: | Hexagonal | ||
Green silicon carbide properties:
| TYPICAL CHEMICAL ANALYSIS | |
| SiC | ≥99.05% |
| SiO2 | ≤0.20% |
| F,Si | ≤0.03% |
| Fe2O3 | ≤0.10% |
| F.C | ≤0.04% |
| TYPICAL PHISICAL PROPERTIES | |
| Hardness: | Mohs：9.5 |
| Melting Point: | Sublimes at 2600 ℃ |
| Maximum service temperature: | 1900℃ |
| Specific Gravity: | 3.20-3.25g/cm3 |
| Bulk density(LPD): | 1.2-1.6 g/cm3 |
| Color: | Green |
| Particle shape: | Hexagonal |
| Available size: | |
| Grit：4# 5# 6# 8# 10# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 10# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220# Micropowder： JIS:240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# 8000# 10000# FEPA： F230 F240 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000 | |
Key SiC Pump Components
- Silicon carbide impellers
- SiC pump casings & inner liners
- Shaft sleeves and bushings
- Dynamic & static mechanical seal rings
- Pump valve seats and flow channel parts
Advantages of SiC Ceramic Pumps
- Outstanding abrasion resistanceSilicon carbide has Mohs hardness of 9.2–9.5, far superior to stainless steel, cast iron and graphite. It withstands long-term transportation of abrasive media containing sand, mineral particles and slurry without scratching or rapid wear.
- Extreme chemical corrosion resistanceSiC is chemically inert against strong acids, alkalis, brine, seawater and various organic solvents. It will not dissolve or rust under harsh chemical working conditions.
- Superior thermal performanceHigh thermal conductivity quickly dissipates friction heat to prevent seal surface burning during dry running; low thermal expansion coefficient keeps tight fitting of sealing faces under drastic temperature changes, effectively avoiding medium leakage.
- High density & good sealing performanceSintered SiC ceramics have almost no internal pores, suitable for high-pressure fluid delivery applications.
- Extended service lifeThe service lifespan of SiC ceramic pumps is 3–10 times longer than ordinary metal pumps when conveying corrosive and abrasive slurry.
Main Application Fields of SiC Ceramic Pumps
- Thermal power plant flue gas desulfurization slurry pumps
- Chemical industry acid & alkali liquid transfer pumps
- Seawater desalination and marine water treatment pumps
- Mining mineral slurry delivery pumps
- Industrial wastewater corrosive waste liquid pumps
- High-temperature heat conduction oil circulation pumps