Mixtures with high cement content

Name of mixture Core component Chemical composition, % Density after firing at 800˚C, g/cm3 Compressive strength, N/mm2 Thermal conductivity at an average temperature of 500˚C, W/m*K Application temperature, ˚C
Al2O3 SiO2 Fe2O3 CaO 3 days after molding after firing at 800˚C
Alcor 37-25 fireclay 37 48 5 8 1.9 20 15 0.8 1300
Alcor 37-40 fireclay 39 42 7 10 1.9 35 25 0.8 1300
Alcor 37-50 fireclay 42 43 3 9 1.9 30 25 0.8 1400
Alcor 45 fireclay 45 42 1.5 9 2 45 35 1 1400
Alcor 37-40T fireclay 39 34 9 15 1.9 50 30 0.8 1300
Alcor 37-50T fireclay 44 36 3 14 1.9 40 25 0.8 1400
Alcor 37-50KT fireclay 40 37 3 14 1.9 60 40 0.8 1200
Alkor 45T fireclay 45 41 1.5 10 1.9 45 40 0.9 1400
Alkor 45AT fireclay 51 35 1.3 10 2 50 50 1 1450
Aligan 37-40 fireclay 39 40 7 11 1.9 30 40 0.9 1300
Aligan 37-50 fireclay 43 40 3 11 1.85 30 40 0.9 1400
Alcor 56/5 fireclay 57 36 1 5 2 40 40 1 1500
Alkor 56/5T fireclay 56 35 1 6 2 30 30 1 1500
Alkor 69AT mullite 74 16 1 6 2.2 40 60 1.4 1450
Alcor 76 bauxite 81 7 1.6 8 2.4 50 40 1.6 1450
Alkor 76AT bauxite 82 5 1.3 9 2.4 40 70 1.6 1450
Alcor 94 corundum 94 0.1 0.1 5 2.7 60 70 2.5 >1700
Alcor 94TAB tabular alumina 94 0.1 0.1 5 2.6 60 70 2.4 >1700
Alcor 94T corundum 93 0.1 0.1 6 2.6 60 100 2.4 >1700
Alcor 94TAB-T tabular alumina 93 0.1 0.1 6 2.5 60 100 2.3 >1700
Alcor 96 corundum 96 0.1 0.1 3.7 2.8 40 70 2.6 >1700
Alcor 96TAB tabular alumina 96 0.1 0.1 3.7 2.7 40 70 2.5 >1700
These values may vary depending on the characteristics of the raw materials and are not guaranteed.
ALCOR 37-25
ALCOR 37-40
ALCOR 37-50
ALCOR 45
Basic versions of concrete based on chamotte and aluminatcalcium cements of different composition and quality.
In ALCOR 37-25 and ALCOR 37-40 mixtures the binder is a high quality synthetic fused alumina cement containing more than 40% Al2O3, ALCOR 37-50 and ALCOR 45 mixtures are made with high alumina cement.
Основным компонентом смесей АЛКОР 37-25, АЛКОР 37-40, АЛКОР 37-50 является рядовой шамот, смесь АЛКОР 45 производится на высокоплотном шамоте с содержанием более 40% Аl2O3 и малым содержанием примесей.
The recommended method of laying is pouring. Shotcrete is possible, but it is better to use concrete with index “T” or ALIGAN series for this application method.
ALCOR 37-40T
ALCOR 37-50T
ALCOR 37-50KT
ALCOR 45T
ALCOR 45AT
Fireclay concretes for universal use with increased strength. Can be laid by pouring, shotcrete and hand capping.
ALCOR 45T, ALCOR 45AT mixtures are made on high-density chamotte, ALCOR 45AT mixture is characterized by increased content of Al2O3 in fine matrix, recommended for use in reducing atmosphere.
ALCOR 37-50KT has increased acid resistance.
ALIGAN 37-40
ALIGAN 37-50.
High cement content shotcrete with low rebound in gun shotcrete with improved abrasion resistance compared to similar ALCOR concretes.
ALIGAN 37-50 due to the combination of low thermal conductivity and rather high abrasion resistance became the basic material for one-layer lining of reactors and regenerators of catalytic cracking units with dusty catalyst.
They have a “viscous” consistency suitable for shotcrete, but when excess water is added they can be poured by pouring with intense vibration. When using the pour-in-place method, be aware that these concretes set quickly. In this case, the use of retarders is recommended.
ALCOR 56/5
ALCOR 56/5T
High alumina mixtures on high-density chamotte with corundum matrix with application temperature of 1500°C.
The reduced cement content and the presence of deflocculating additives in the composition of ALCOR 56/5 concrete ensure its low water consumption and good flowability under vibration.
ALKOR 56/5T is recommended for manual shotcrete and caulking, but can also be applied by pouring.
The fine binder matrix of these concretes is practically free of Fe2O3 and SiO2, so they can be operated in a reducing environment.
ALCOR 69AT
ALCOR 76
ALCOR 76AT
High alumina mixtures on mullite or bauxite aggregates. For many years ALCOR 76 has been the most popular material for making burner stones for various types of stoves. ALCOR 69AT and ALCOR 76AT mixtures are modified to be applied by hand shotcrete and caulking, but can also be placed by pouring.
ALCOR 94
ALCOR 94T
ALCOR 96
ALCOR 94TAB
ALCOR 94TAB-T
ALCOR 96TAB
Highly pure corundum or tabular alumina based mixtures with very low iron and silicon content. They have an exceptionally high fire resistance. Of all the high cement content concretes, only the concretes in this series can be operated in contact with liquid steel. Also recommended for use in highly reactive atmospheres, including those with high hydrogen content. They are “classical” materials for lining of furnaces for combustion of hydrogen sulfide and other sulfur-containing products.
ALCOR 94T and ALCOR 94TAB-T mixtures are modified to be applied by hand shotcrete and caulking, but can also be placed by pouring. ALCOR 96 and ALCOR 96TAB mixtures, on the contrary, have increased fluidity, they are unsuitable for shotcreting.

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