Heat Insulating Materials
Heat insulating materials are distinguished by low thermal conductivity and low stored heat. By the use of insulating materials the energy consumption of a furnace can be decreased and the outside wall temperature optimized. Lightweight materials with low specific heat are ideal choices for plants with periodic operating conditions to shorten the colt-to-cold cycle.
The standard heat insulating materials are classified as insulating refractory bricks, plates, insulating castables and ceramic fibre materials.
The thermal conductivity of the materials does not only depend on the total porosity but also on pore size and mineralogical composition. Innovative aggregates based on CA₆ offer reduced thermal conductivity when compared to aggregates with comparable densities and micro-porous heat-insulating materials can have a thermal conductivity – especially at elevated temperatures- even below the conductivity of air.
Tabular & other Aggregates
Dense, sintered crystalline alpha alumina with 99,5% Al2O3
High purity and chemical resistance
Dense, sintered crystalline alpha alumina with 99,5% Al2O3
High purity and chemical resistance
Safety Data Sheet
Product Data Sheet
- GP-001_Tabular_T60_T64_0224 790 KB ( en )
Technical Paper- 2019 - Formation of Hexa-Aluminate Solid Solution Phases in Spinel Containing Castables ( en )
- 2016 - Case Studies on Optimization of Selected Value-added Premium Aluminas to Attain a Comprehensive Leap in the Refractory Properties ( en )
- 2016 - Value Enhancement Through Engineered Alumina Products For Monolithic And Brick Applications ( en )
- 2014 - Role of Tabular Alumina As a Suitable Aggregate for Emerging Applications – Focus on Dry Ramming Mix ( en )
- 2013 - Castables for Industrial Applications – Still Room for Improvement! ( en )
- 2013 - Supply and Demand of High Alumina Raw Materials for Refractories in Europe ( en )
- 2012 - Rheology of High Performance Alumina and Spinel Castables ( en )
- 2011 - Review of Matrix Aluminas for Refractory Formulations ( en )
- 2010 - Technical and economic review of high alumina raw materials for steel refractories ( en )
- 2009 - New Coarse Tabular Aggregates for Improved Castables ( en )
- 2008 - Latest Development in Refractory Monolithics ( en )
- 2007 - Review of Tabular alumina as high perfomance refractory material ( en )
- 2007 - Tabular Alumina for High Purity Corundum Brick ( en )
- 2005 - Almatis global product concept for the refractory industry ( en )
- 2005 - Raw material concepts for SiO2 free high strength and low wettability aluminium castables ( en )
- 2002 - Raw material concepts for SiO2 free high strength castables in the temperature range up to 1200°C ( en )
- 2002 - Upgrading Castable Performance through Matrix Optimization ( en )
- 2000 - Synthetic alumina raw materials - key elements for innovative refractories ( en )
- 1997 - New Developments of Tabular Alumina and Tabular Alumina Spinel Castables ( en )
- 1996 - The Matrix Advantage system, a new approach to low moisture LC selfleveling alumina and alumina spinel castables ( en )
- 1994 - The influence of SiO2 and Spinel on the hot properties of high alumina low cement castables ( en )
- 1992 - New Sinter Spinels for Castables in Steel Applications ( en )
- 1983 - Fine Aluminas for High Performance Refractories ( en )
- Perceptions and Characteristics of Fused and Sintered Refractory Aggregates ( en )
High-purity super lightweight aggregate,
Based on calcium hexa-aluminate CA₆; non-fibrous
High-purity super lightweight aggregate,
Based on calcium hexa-aluminate CA₆; non-fibrous
Safety Data Sheet
Product Data Sheet
- GP-011_SLA_92_0717 242 KB ( en )
Technical Paper- 2019 - Formation of Hexa-Aluminate Solid Solution Phases in Spinel Containing Castables ( en )
- 2013 - Castables for Industrial Applications – Still Room for Improvement! ( en )
- 2013 - Energy Saving in Walking Beam Furnaces at ArcelorMittal (Bremen, Germany) by a New Concept for Skid Pipe Insulation ( en )
- 2012 - Material Design for New Insulating Lining Concepts ( en )
- 2012 - Reduction of Heat Losses on the Skid Pipe System of a Pusher Type Furnace at Voestalpine Grobblech GmbH in Linz, Austria ( en )
- 2011 - Advantages of Calcium Hexaluminate in a Corrosive Environment ( en )
- 2011 - Advantages of Calcium Hexaluminate in a Corrosive Environment (1) ( en )
- 2005 - Industrial application experiences with microporous calcium hexaluminate insulating material SLA-92 (1) ( en )
- 2005 - New Microporous Materials for Use in Modern Firing Plants ( en )
- 2004 - Experiences with microporous calcium hexaluminate insulating materials in steel reheating furnaces at Hoesch Hohenlimburg and Thyssen Krupp Stahl AG Bochum ( en )
- 2001 - Non-Fibrous Insulation of Submerged Nozzles for Continuous Casting ( en )
- 2001 - Innovative ceramic fiber free ladle preheaters at CORUS Steelworks Ijmuiden ( en )
- 2000 - Innovative Refractory Solutions Using a New Microporous Material for Kiln Cars in the Ceramic Industry ( en )
- 1999 - Long Term High Temperature Stability of Microporous Calcium Hexaluminate Based Insulating Materials ( en )
- 1998 - New Insulating Raw Material for High Temperature Applications (1) ( en )
Cement & Binders
High purity cement with 70% Al2O3; additive free
General purpose; moderate setting
High purity cement with 70% Al2O3; additive free
General purpose; moderate setting
Safety Data Sheet
Product Data Sheet
- Calcium Aluminate Cements - Global Product Data 687 KB ( en )
Technical Paper- 2019 - Formation of Hexa-Aluminate Solid Solution Phases in Spinel Containing Castables ( en )
- 2018 - Setting Shrinkage Measurement during Cement Hydration ( en )
- 2016 - Comparison of Silica-sol and Low Cement Bonded Tabular Alumina and Spinel Castables ( en )
- 2016 - Case Studies on Optimization of Selected Value-added Premium Aluminas to Attain a Comprehensive Leap in the Refractory Properties ( en )
- 2015 - The value of additives in refractory castables – Castables without silica fume ( en )
- 2015 - The value of additive systems in silica fume castables ( en )
- 2015 - Lessons on aging ( en )
- 2013 - Cement hydration and strength development - How can reproducible results be achieved? ( en )
- 2002 - Upgrading Castable Performance through Matrix Optimization ( en )
- 2000 - Synthetic alumina raw materials - key elements for innovative refractories ( en )
- 1996 - High Alumina Cements & Chemical Binders ( en )
- 1983 - Fine Aluminas for High Performance Refractories ( en )
- Hydration of calcium aluminate cement phase CA and CA2 in refractory applications ( en )
High purity cement with 70% Al2O3; additive free
General purpose; faster setting
High purity cement with 70% Al2O3; additive free
General purpose; faster setting
Safety Data Sheet
Product Data Sheet
- Calcium Aluminate Cements - Global Product Data 687 KB ( en )
Technical Paper- 2019 - Formation of Hexa-Aluminate Solid Solution Phases in Spinel Containing Castables ( en )
- 2018 - Setting Shrinkage Measurement during Cement Hydration ( en )
- 2016 - Comparison of Silica-sol and Low Cement Bonded Tabular Alumina and Spinel Castables ( en )
- 2016 - Case Studies on Optimization of Selected Value-added Premium Aluminas to Attain a Comprehensive Leap in the Refractory Properties ( en )
- 2015 - The value of additives in refractory castables – Castables without silica fume ( en )
- 2015 - The value of additive systems in silica fume castables ( en )
- 2015 - Lessons on aging ( en )
- 2013 - Cement hydration and strength development - How can reproducible results be achieved? ( en )
- 2002 - Upgrading Castable Performance through Matrix Optimization ( en )
- 1996 - High Alumina Cements & Chemical Binders ( en )
- 1983 - Fine Aluminas for High Performance Refractories ( en )
- Hydration of calcium aluminate cement phase CA and CA2 in refractory applications ( en )
High purity cement with 80% Al2O3; includes additives
Extended casting life and excellent surface finish
High purity cement with 80% Al2O3; includes additives
Extended casting life and excellent surface finish
Safety Data Sheet
Product Data Sheet
- Calcium Aluminate Cements - Global Product Data 687 KB ( en )
Technical Paper- 2019 - Formation of Hexa-Aluminate Solid Solution Phases in Spinel Containing Castables ( en )
- 2018 - Setting Shrinkage Measurement during Cement Hydration ( en )
- 2016 - Comparison of Silica-sol and Low Cement Bonded Tabular Alumina and Spinel Castables ( en )
- 2016 - Case Studies on Optimization of Selected Value-added Premium Aluminas to Attain a Comprehensive Leap in the Refractory Properties ( en )
- 2015 - The value of additives in refractory castables – Castables without silica fume ( en )
- 2015 - The value of additive systems in silica fume castables ( en )
- 2015 - Lessons on aging ( en )
- 2013 - Cement hydration and strength development - How can reproducible results be achieved? ( en )
- 1996 - High Alumina Cements & Chemical Binders ( en )
- 1983 - Fine Aluminas for High Performance Refractories ( en )
- Hydration of calcium aluminate cement phase CA and CA2 in refractory applications ( en )
High purity cement with 80% Al2O3; includes additives
General purpose, moderate setting
High purity cement with 80% Al2O3; includes additives
General purpose, moderate setting
Safety Data Sheet
Product Data Sheet
- Calcium Aluminate Cements - Global Product Data 687 KB ( en )
Technical Paper- 2019 - Formation of Hexa-Aluminate Solid Solution Phases in Spinel Containing Castables ( en )
- 2018 - Setting Shrinkage Measurement during Cement Hydration ( en )
- 2016 - Comparison of Silica-sol and Low Cement Bonded Tabular Alumina and Spinel Castables ( en )
- 2016 - Case Studies on Optimization of Selected Value-added Premium Aluminas to Attain a Comprehensive Leap in the Refractory Properties ( en )
- 2015 - The value of additives in refractory castables – Castables without silica fume ( en )
- 2015 - The value of additive systems in silica fume castables ( en )
- 2015 - Lessons on aging ( en )
- 2013 - Cement hydration and strength development - How can reproducible results be achieved? ( en )
- 1996 - High Alumina Cements & Chemical Binders ( en )
- 1983 - Fine Aluminas for High Performance Refractories ( en )
- Hydration of calcium aluminate cement phase CA and CA2 in refractory applications ( en )
Calcined Aluminas
for refractory matrix enhancement
Particle size / D50 = 3.5µm
Na2O Content = 0.15%
for refractory matrix enhancement
Particle size / D50 = 3.5µm
Na2O Content = 0.15%
Safety Data Sheet
Product Data Sheet
- RP-EU_RCP_007_Calcines_and_Reactives_for_Refractories_0224 482 KB ( en )
Technical Paper- 2016 - Case Studies on Optimization of Selected Value-added Premium Aluminas to Attain a Comprehensive Leap in the Refractory Properties ( en )
- 2012 - Rheology of High Performance Alumina and Spinel Castables ( en )
- 2011 - Review of Matrix Aluminas for Refractory Formulations ( en )
- 2002 - Upgrading Castable Performance through Matrix Optimization ( en )
- 1983 - Fine Aluminas for High Performance Refractories ( en )
Alpha-alumina for refractory matrix enhancement
Particle size / D50 = 5.5µm
Na2O Content = 0.30%
Alpha-alumina for refractory matrix enhancement
Particle size / D50 = 3.5µm
Na2O Content = 0.12%
Alpha-alumina for refractory matrix enhancement
Particle size / D50 = 3.5µm
Na2O Content = 0.12%
Safety Data Sheet
Product Data Sheet
Technical Paper- 2016 - Case Studies on Optimization of Selected Value-added Premium Aluminas to Attain a Comprehensive Leap in the Refractory Properties ( en )
- 2012 - Rheology of High Performance Alumina and Spinel Castables ( en )
- 2011 - Review of Matrix Aluminas for Refractory Formulations ( en )
- 2002 - Upgrading Castable Performance through Matrix Optimization ( en )
- 1983 - Fine Aluminas for High Performance Refractories ( en )
Special alumina for gunning applications
Particle size / D50 = 3.0µm
Na2O Content = 0.4%
Special alumina for gunning applications
Particle size / D50 = 3.0µm
Na2O Content = 0.4%
Safety Data Sheet
Product Data Sheet
Technical Paper- 2016 - Case Studies on Optimization of Selected Value-added Premium Aluminas to Attain a Comprehensive Leap in the Refractory Properties ( en )
- 2012 - Rheology of High Performance Alumina and Spinel Castables ( en )
- 2011 - Review of Matrix Aluminas for Refractory Formulations ( en )
- 2002 - Upgrading Castable Performance through Matrix Optimization ( en )
- 1983 - Fine Aluminas for High Performance Refractories ( en )
- High Performance Gunning Mix with Alumina Plasticiser ( en )