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| Type1: | Ceramic Honeycomb | Type2: | Ceramic Ball |
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| Type 3: | Preheating Furnace | Type 4: | Regenerative Type Burner |
| Type5: | Metallurgy | Type 6: | Petrochemical |
| High Light: | heat proof bricks,stove fire bricks |
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furnace refractory bricks for Alumina ceramic balls high alumina content and low silica
Introduction
The Chemxin 99 High Alumina Support Media is equal Denstone® 99 Support Media. It is inchemical composition99+% alpha alumina and a maximum 0.2wt% SiO 2 . Because of its high alumina content and low silica (SiO2 ), it's a very excellent and ideal product for high temperature and steam applications, such as secondary reformers in ammonia processing, where leached silica will coat downstream equipment or foul the catalyst bed.
The Chemxin 99 High Alumina Support Media has very excellent thermal properties, with its high density high-temperature resistance 1550℃, also it's a good choice for heat retention or equilibration media.
For its superior chemical resistance, it's suitable for applications in olefin processes, such as ethylene dryers, where there's the polymerization problem.
Physical properties
| Model: | Chemxin 99 | |||
| Color: | White | |||
| Shape: | Ball | |||
| Typical Technical Composition | Min. % | Min. % | Max. % | Usual % |
| SiO2 | ****** | ****** | 0.2 | 0.18 |
| Al2O3 | 99 | 99 | 99.6 | 99.3 |
| Fe2O3 | ****** | ****** | 0.2 | 0.02 |
| TiO2 | ****** | ****** | 0.55 | 0.02 |
| CaO | ****** | ****** | 0.1 | 0.2 |
| MgO | ****** | ****** | 0.1 | 0.05 |
| Na2O | ****** | ****** | 0.25 | 0.1 |
| K2O | ****** | ****** | 0.2 | 0.13 |
| Physical properties | ||||
| Index | Value | Value | ||
| Leachable Iron | ≤ 0.01% | |||
| Apparent Porosity by Weight | ≤ 7.0% | |||
| Moh's Hardness Scale | >8.0 | |||
| Water Absorption | <4.0 wt.% | |||
| Acid Resistance | >99.8% | |||
| Thermal Conductivity | 0.7-0.8 w/m2.k | |||
| Thermal Expansion @ 500 | 0.10% | |||
| Thermal Shock Stability, 1000 then water cooling | 10 times | |||
| Max. Operating Temperature | 1550°C | 2822 | ||
| Specific Density | 3400 kg/m3 | 212 lb/ft3 | ||
| Bulk Density (Packing Density) | 2100 kg/m3 | 131 lb/ft3 | ||
| Crush Strength | ||||
| Size | Crush Strength | |||
| Nominal Size | (lbs) | (kg) | (N/pc) | |
| mm | inch | min. | min. | min. |
| 3 | 1/8" | 115 | 52 | 510 |
| 6 | 1/4" | 230 | 105 | 1030 |
| 10 | 3/8" | 440 | 200 | 1961 |
| 13 | 1/2" | 1355 | 615 | 6031 |
| 16 | 5/8" | 1720 | 780 | 7650 |
| 19 | 3/4" | 2315 | 1050 | 10297 |
| 25 | 1" | 3130 | 1420 | 13925 |
| 38 | 1-1/2" | 4034 | 1830 | 17946 |
| 50 | 2" | 4960 | 2250 | 22065 |
| Typical Application | a)high temperature and steam b)has very excellent thermal properties, with its high density high-temperature resistance 1550. c)it's suitable for applications in olefin processes, such as ethylene dryers |
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