- Category
-
- Product type
-
Category
Cement Kiln Preheater
Cements
In the cement manufacturing process, the preheater is a device used to preheat raw materials before they are fed into the rotary kiln. Cyclone-type preheaters are commonly utilized, contributing to energy-saving and improved thermal efficiency in clinker production. Inside the preheater, high-temperature gases and powdered raw materials rapidly move and interact.
Structure of Preheater Sections and Refractory Requirements
| Part | Conditions | Required Refractory Properties | Main Refractory Used |
|---|---|---|---|
| ①Upper Cyclones | Relatively low temperatures (300–600℃) | Abrasion resistance, thermal insulation | Alumina-silica refractory |
| ②Lower Cyclones and Calciner | High-temperature zones (700–1,000℃) | Heat resistance, alkali corrosion resistance, thermal shock resistance | High-alumina refractory |
| ③Gas Inlet/Ducts | Dust collisions and high-temperature gas inflow | Abrasion resistance, heat resistance, oxidation resistance | Wear-resistant castable |
| ④Rising Ducts | Intense falling and collision of raw materials | Impact resistance, abrasion resistance | High-strength castable, alumina refractory, silicon carbide refractory |
Quality Table
These data are typical properties subject to reasonable variation and should not be treated as specifications.
Standard product
［Refractory brick］
| Brand | Main raw materials | Chemical composition／％ | Bulk density | Apparent porosity／％ | Cold crushing strength／MPa | Refractoriness under load T2／℃ | Refractoriness SK | Thermal spalling resistance JIS 1000℃ times-loss％ |
Linear thermal expansion 1000℃／％ |
Mortar |
Application | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SiC | SiO2 | Al2O3 | Fe2O3 | |||||||||||
| SIC-50 | Silicon carbide | 50 | 36 | 11 | 1 | 2.40 | 16.0 | 80 | 1550 | 0.45 | JT-SC7 | ④ | ||
| ARW-36 | Alumina, Fire clay | 38 | 58 | 1.7 | 2.35 | 21.0 | 39 | 1500 | 36 | 15times-0% | 0.55 | JT-36-D | ② | |
| ARW-34 | Fire clay | 53 | 43 | 2 | 2.25 | 20.0 | 39 | 1430 | 34 | 15times-0% | 0.55 | JT-34-D | ① | |
Generic product
［Castable refractory of YOTAI］
CFC（Cement-free castable）、
C（C（Alumina-cement bonded castable））、
IC（Lightweight Insulating Castable）
| Brand | Main raw materials | Chemical composition／％ | Linear thermal expansion 1000℃／％ |
Thermal conductivity W/(m·K) | Cold crushing strength after heat／MPa |
Quantity required kg/m³ |
Water required／％ | Application | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SiC | SiO2 | Al2O3 | Fe2O3 | 400℃ | 1000℃ | 110℃×24hr | 1000℃×3hr | 1200℃×3hr | 1500℃×3hr | ||||||
| CFC-SC-6 | Silicon carbide | 60 | 18 | 18 | 1 | 0.40 | 7.3 | 7.5 | 59 | 83 | 100 | - | 2500 | 6.5-8.5 | ③④ |
| C-SC-60 | Silicon carbide | 61 | 15 | 18 | 1 | 0.40 | 2.2 | 3.3 | 45 | 54 | 69 | - | 2250 | 13-16 | ③④ |
| CFC-15 | Fire clay | 42 | 52 | 1 | 0.46 | 1.4 | 1.5 | 54 | 82 | 90 | 95 | 2300 | 6.5-8.5 | ②③④ | |
| CFC-13 | Fire clay | 58 | 35 | 1 | 0.39 | 1.6 | 1.8 | 49 | 64 | 69 | - | 2200 | 7.0-9.0 | ①③ | |
| C-145AR | Fire clay | 51 | 38 | 1.5 | 0.30 | 1.1 | 1.2 | 34 | 27 | 30 | - | 1900 | 13-17 | ①③ | |
| IC-100 | Fire clay | 48 | 30 | 2 | - | 0.20 | 0.35 | 2 | 2 | - | - | 850 | 55-70 | Back Lining | |
C（C（Alumina-cement bonded castable））・Gunning、
IC（Lightweight Insulating Castable）・Gunning
| Brand | Main raw materials | Chemical composition／％ | Linear thermal expansion 1000℃／％ |
Thermal conductivity W/(m·K) | Cold crushing strength after heat／MPa |
Quantity required kg/m³ |
Water required／％ | Application | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SiC | SiO2 | Al2O3 | Fe2O3 | 400℃ | 1000℃ | 110℃×24hr | 1000℃×3hr | 1200℃×3hr | 1500℃×3hr | ||||||
| C-SC-60G | Silicon carbide | 60 | 16 | 19 | 1 | 0.40 | 2.4 | 3.5 | 30 | 25 | 38 | - | 2360-2700 | 13-17 | ③④ |
| C-VS70G | Mullite, Alumina | 23 | 68 | 1 | 1.4 | 1.2 | 45 | 40 | - | 55 | 2670-2800 | 12-15 | ①②③④ | ||
| C-145ARG | Fire clay | 49 | 40 | 1.5 | 0.30 | 1.1 | 1.2 | 30 | 22 | 25 | - | 2050-2130 | 16-19 | ①③ | |
| IC-100G | Fire clay | 48 | 30 | 2 | - | 0.20 | 0.34 | 2 | 2 | - | - | 860-910 | 55-75 | Back Lining | |
Generic product
［Mortar］
Heat-set of YOTAI、Air-set of YOTAI
| Brand | Main raw materials | Chemical composition／％ | Refractoriness SK | |||
|---|---|---|---|---|---|---|
| SiC | SiO2 | Al2O3 | Fe2O3 | |||
| JT-36-D | Alumina, Fire clay | 40 | 54 | 1.5 | 36 | |
| M-34 | Fire clay | 56 | 39 | 2 | 34 | |
- Contact us
-
Please feel free to contact us with any questions
about our product features, pricing, or quotations.
