Carbon Black
Have higher fuel costs, energy concerns and more demanding operating conditions driven a need for heavy-duty specialty refractories for your carbon black reactors?
Saint-Gobain has supplied a complete range of refractory linings for carbon black reactors worldwide for more than 30 years. Custom engineered solutions for hot face and backup layers in hard black and soft black reactors include:
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Chromcor® fired or precast chrome-alumina shapes
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Alundum® AH199, AL100, Alfrax®101 high-purity alumina bricks
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Thermal shock resistant Mullfrax® and AL 102 bricks
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Ziral™ zirconia bricks for the highest temperature capability
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Fused-cast Jargal M shapes for ultimate erosion resistance
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Lightweight and dense castables
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Joining cements and mortars
Trust Saint-Gobain engineers to develop and design ideal refractory materials for soft black reactors.
Carcass grade carbon blacks are made at a moderate temperature requiring >90% Al2O3 refractory furnace linings. These include high-purity alumina AL 100 or mullite Mullfrax® 202 HF bricks. MonoPural T pre-formed castable blocks can be a suitable alternative under certain operating conditions. Alumina dense and insulating castables such as Criram, RI34, or alumina-mullite bricks like MS4 or MS6 are widely used as backup layers.
Saint-Gobain refractories offer unparalleled temperature, erosion, abrasion, corrosion and thermal shock resistance for hard black reactors
Operated under highly demanding conditions to produce best quality, highest yield rates and longer run campaigns, each zone of hard black reactors requires a custom engineered solution.
High-purity alumina or alumina-chromia product categories with outstanding properties are in use, especially to ensure optimal operation temperature and best performance/cost ratio.
For the hot face lining, Saint-Gobain engineers Chromcor® BDAK, a 10% Cr2O3 alumina-chromia material, high-purity alumina AL100 or Alundum® AH199H shapes.
For Venturis, Monochromcor® 10, a 10% Cr2O3 pre-formed shapes or Monocriram high alumina/low cement pre-formed shapes are recommended. Low cement castables Chromcor® 10 and Criram offer economical solutions in the same reactor areas. In some special cases, fused cast Jargal M is used.
For extreme temperature conditions, Saint-Gobain offers a high zirconia product (ZA95) with outstanding refractoriness and thermal insulation properties.
Refractory design solutions developed together with customers and the Saint-Gobain engineering department ensure optimal fit with process parameters and operating conditions.
Backup and insulating layers are made of high alumina dense Supcast or insulating RI34 HR castables.
Specifications
| Alumina/Chrome-alumina / Zirconia Refractories for Carbon Black | ||||||
|---|---|---|---|---|---|---|
| Al2O3 (%) |
Others (%) |
Density |
Porosity (%) | Shape design |
Specific comments | |
| AL100 | 99.50 | <0.5 | 3.32 (207) |
16 | Standard and special design bricks | Hot face lining |
| AH199H | 99.55 | <0.4 | 3.30 (206) |
16 | Standard and special design bricks / blocks | Excellent erosion resistance |
| AL102 | 96 | 3.0 (ZrO2) |
3.25 (203) |
16 | Standard and special design bricks | Quench zone / high thermal shock resistance |
| Mullfrax 202 | 87 | <10 (SiO2) |
2.80 (175) |
18 | Standard and special design bricks | High thermal shock resistance |
| ZA95 | <0.3 | >93 (ZrO2) |
4.55 (284) |
19 | Standard and special design bricks | For temperatures >2000°C |
| Monocriram | 98 | <2.0 | 3.25 (203) |
17 | Preshaped block | Choke sections in single block shape |
| Jargal M | 95 | <4.0 (Na) |
3.54 (221) |
4 | Fused cast preshaped block | Outstanding erosion and chemical resistance |
| Chrome-alumina Refractories for Carbon Black | ||||||
|---|---|---|---|---|---|---|
| Al2O3 (%) |
Cr2O3 (%) |
Density |
Porosity (%) | Shape design |
Specific comments | |
| Chromcor BDAK | 80.0 | ~10+4% ZrO2 |
3.55 (222) |
12 | Standard and special design bricks | Hot face lining, special soft black grade |
| Chromcor B10 | 85 | ~10 | 3.48 (217) |
13 | Standard and special design bricks / blocks | Hot face lining |
| Monochromcor10 | 85 | ~10 | 3.25 (203) |
13 | Preshaped block | Choke sections in single block shape |