Tabular & other Aggregates
Aggregates are the backbone of a refractory formulation and provide dimensional stability to the refractory products. The coarser fractions add thermal shock and corrosion resistance and the aggregate fines optimize the particle size distribution and increase the refractoriness of the product.
The consistent quality of Almatis aggregates such as Tabular alumina T60/T64, Spinel AR 90, AR 78, MR 66 and BSA 96 is the result of a well-controlled sinter process with firing temperatures above 1800° C. The use of high temperature furnaces with state-of-the-art technology permits densification of selected raw materials without sintering aids that would negatively impact the high temperature properties of the refractories.
As a result of the sinter process, the aggregates exhibit the same mineralogical and chemical composition for all fractions. Contrary to fused products where impurities accumulate in the fines, the use of Almatis sintered aggregates in refractory formulation guarantees stable and reliable behavior.
Almatis offers various sizings of aggregates from very coarse fractions to fine-ground sizes of <45 μm and <20 μm. Crushing and milling are followed by intensive de-ironing steps that result in very low free iron within the various fractions.
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-RCP_001_Tabular_T60_T64_0812 127 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 )
Alumina-rich spinel (78% Al2O3)
Used for steel ladle shapes and monolithics
Alumina-rich spinel (78% Al2O3)
Used for steel ladle shapes and monolithics
Safety Data Sheet
Product Data Sheet
- GP-RCP_004_Magnesium_Aluminate_Spinel_1217 107 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 )
- 2013 - Castables for Industrial Applications – Still Room for Improvement! ( en )
- 2012 - Rheology of High Performance Alumina and Spinel Castables ( en )
- 2010 - Spinel: in-situ versus preformed- clearing the myth ( en )
- 2008 - Latest Development in Refractory Monolithics ( en )
- 2005 - Raw material concepts for SiO2 free high strength and low wettability aluminium castables ( en )
- 2004 - Magnesium Aluminate Spinel Raw Materials for High Performance Refractories for Steel Ladles ( en )
- 2002 - Raw material concepts for SiO2 free high strength castables in the temperature range up to 1200°C ( 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 )
More Alumina-rich spinel (90% Al2O3)
Used in monolithics and bricks for steel applications
More Alumina-rich spinel (90% Al2O3)
Used in monolithics and bricks for steel applications
Safety Data Sheet
Product Data Sheet
- GP-RCP_004_Magnesium_Aluminate_Spinel_1217 107 KB ( en )
Technical Paper- 2019 - Formation of Hexa-Aluminate Solid Solution Phases in Spinel Containing Castables ( en )
- 2016 - Value Enhancement Through Engineered Alumina Products For Monolithic And Brick Applications ( en )
- 2013 - Castables for Industrial Applications – Still Room for Improvement! ( en )
- 2010 - Spinel: in-situ versus preformed- clearing the myth ( en )
- 2008 - Latest Development in Refractory Monolithics ( en )
- 2004 - Magnesium Aluminate Spinel Raw Materials for High Performance Refractories for Steel Ladles ( en )
- 2002 - Raw material concepts for SiO2 free high strength castables in the temperature range up to 1200°C ( en )
- 1997 - New Developments of Tabular Alumina and Tabular 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 )
Magnesia-rich spinel; contains free periclase
Used in bricks for cement rotary kilns
Magnesia-rich spinel; contains free periclase
Used in bricks for cement rotary kilns
Safety Data Sheet
Product Data Sheet
- GP-RCP_004_Magnesium_Aluminate_Spinel_1217 107 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 )
- 2004 - Magnesium Aluminate Spinel Raw Materials for High Performance Refractories for Steel Ladles ( en )
- 1992 - New Sinter Spinels for Castables in Steel Applications ( en )
Dense, sintered aggregate with 96% Al2O3 and 1,2% TiO2
Replacement for Brown fused alumina
Dense, sintered aggregate with 96% Al2O3 and 1,2% TiO2
Replacement for Brown fused alumina
Safety Data Sheet
Product Data Sheet
- GP-RCP_002_BSA_96_0217 143 KB ( en )
Technical Paper- 2019 - Formation of Hexa-Aluminate Solid Solution Phases in Spinel Containing Castables ( en )
- 2016 - Five Years after Market Launch – Experiences with BSA 96 ( en )
- 2016 - Alumagcarbon Bricks with Different Alumina Aggregates – Technical Properties and Industrial Application Results with a New Sintered Aggregate ( 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 )
- 2015 - Spinel Formation and Technical Properties of Alumagcarbon Bricks with Different Alumina Aggregates ( 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 )
- 2011 - New european sinter aggregate with 96 % Al2O3 ( 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-RCP_011_SLA_92_0717 61 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 )