Monolithic and shaped refractories for reheating furnaces, melting furnaces, boilers and thermal equipment: low-cement and self-flowing castables, lightweight insulation, gunning mixes, burner blocks, skid-rail shapes, anchor bricks and heat-storage balls.
02.01
High-performance castables
Low-cement, ultra-low-cement and no-cement castables for industrial kiln and melting-furnace linings. High-alumina, corundum and mullite grades offer strength, volume stability, thermal-shock resistance and resistance to corrosion and abrasion.
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High-alumina castables
Property
HD-LJ50High-alumina castable
HD-LJ55High-alumina castable
HD-LJ60High-alumina castable
HD-LJ65High-alumina castable
HD-LJ70High-alumina castable
HD-LJ75High-alumina castable
Al₂O₃ (%)
50
55
60
65
70
75
Bulk density (g/cm³)110°C × 24h
2.2
2.2
2.3
2.3
2.5
2.6
Modulus of rupture (MPa)110°C × 24h
6
7
7
8
8
9
Modulus of rupture (MPa)1350°C × 3h
8
8
10
10
11*
11*
Cold crushing strength (MPa)110°C × 24h
25
30
35
40
45
50
Cold crushing strength (MPa)1350°C × 3h
30
40
45
50
60*
65*
Permanent linear change (%)1350°C × 3h
±0.5
±0.5
±0.5
±0.5
±0.5*
±0.5*
Values marked * are measured at 1400°C × 3h.
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Corundum and mullite castables
Property
HD-GJ80Corundum castable
HD-GJ90Corundum castable
HD-GJ95Corundum castable
HD-MJ55Mullite castable
HD-MJ60Mullite castable
HD-MJ65Mullite castable
HD-MJ70Mullite castable
Al₂O₃ (%)
80
90
95
55
60
65
70
Bulk density (g/cm³)110°C × 24h
2.7
2.8
3.0
2.2
2.3
2.4
2.5
Modulus of rupture (MPa)110°C × 24h
9
10
11
7
7
8
9
Modulus of rupture (MPa)1350°C × 3h
12
12
12
9
10
10
12
Cold crushing strength (MPa)110°C × 24h
60
60
60
30
35
40
45
Cold crushing strength (MPa)1350°C × 3h
70
75
80
40
50
50
60
Permanent linear change (%)1350°C × 3h
±0.5
±0.5
±0.5
±0.5
±0.5
±0.5
±0.5
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
Mullite and mullite-corundum burner blocks for regenerative heating furnaces and oil- or gas-fired industrial furnaces. Features include high strength, dimensional stability and thermal-shock resistance.
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Burner blocks
Property
HD-MSMullite burner block
HD-MGS1Mullite-corundum burner block
HD-MGS2Mullite-corundum burner block
Al₂O₃ (%)
60
70
75
Bulk density (g/cm³)110°C × 24h
2.3
2.5
2.5
Modulus of rupture (MPa)110°C × 24h
8
10
10
Modulus of rupture (MPa)1450°C × 3h
10
12
12
Cold crushing strength (MPa)110°C × 24h
40
50
60
Cold crushing strength (MPa)1450°C × 3h
50
60
80
Permanent linear change (%)1450°C × 3h
+0.3~-0.5
+0.3~-0.5
+0.3~-0.5
Max. service temperature (°C)
1600
1700
1700
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
Mullite and corundum castables that flow and compact without vibration. Used in industrial and smelting furnaces across metallurgy, building materials, power and machinery applications.
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Self-flowing castables
Property
HD-ZL55Mullite self-flowing castable
HD-ZL60Mullite self-flowing castable
HD-ZL65Mullite self-flowing castable
HD-ZL70Mullite self-flowing castable
HD-ZL80Corundum self-flowing castable
HD-ZL90Corundum self-flowing castable
HD-ZL93Corundum self-flowing castable
Al₂O₃ (%)
55
60
65
70
80
90
93
Bulk density (g/cm³)110°C × 24h
2.2
2.3
2.4
2.5
2.7
2.8
3.0
Modulus of rupture (MPa)110°C × 24h
6
6
6
8
10
10
10
Modulus of rupture (MPa)1350°C × 3h
8
9
9
12
12
12
12
Cold crushing strength (MPa)110°C × 24h
25
30
30
40
50
60
50
Cold crushing strength (MPa)1350°C × 3h
35
45
50
60
70
75
80
Permanent linear change (%)1350°C × 3h
±0.5
±0.5
±0.5
±0.5
±0.5
±0.5
±0.5
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
Castables for short installation schedules and furnace maintenance. The catalog lists a drying period of 3-5 days, approximately half the drying time of conventional products.
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Fast-drying castables
Property
HD-LKJ55High-alumina fast-drying castable
HD-LKJ60High-alumina fast-drying castable
HD-LKJ65High-alumina fast-drying castable
HD-LKJ70High-alumina fast-drying castable
HD-MKJ60Mullite fast-drying castable
HD-MKJ65Mullite fast-drying castable
HD-MKJ70Mullite fast-drying castable
HD-MKJ75Mullite fast-drying castable
Al₂O₃ (%)
55
60
65
70
60
65
70
75
Bulk density (g/cm³)110°C × 24h
2.2
2.3
2.3
2.5
2.3
2.4
2.5
2.7
Modulus of rupture (MPa)110°C × 24h
6
7
8
8
7
8
9
10
Modulus of rupture (MPa)1350°C × 3h
8
10
10
11
10
10
12
12
Cold crushing strength (MPa)110°C × 24h
30
30
40
45
35
40
45
50
Cold crushing strength (MPa)1350°C × 3h
40
40
50
60
50
50
60
80
Permanent linear change (%)1350°C × 3h
±0.5
±0.5
±0.5
±0.5
±0.5
±0.5
±0.5
±0.5
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
Insulating castables for industrial furnace linings and thermal equipment. The range combines low density, heat insulation and convenient installation.
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Lightweight insulating castables
Property
HD-Q0.6
HD-Q0.8
HD-Q1.0
HD-Q1.2
HD-Q1.4
HD-Q1.6
HD-Q1.8
Bulk density (g/cm³)
0.6±0.1
0.8±0.1
1.0±0.1
1.2±0.1
1.4±0.1
1.6±0.1
1.8±0.1
Cold crushing strength (MPa)110°C × 24h
—
1.0
2.5
4.0
6
12
18
Permanent linear change (%)800°C × 3h
—
0~-1.0
0~-1.0
0~-0.8
0~-0.7
0~-0.6
0~-0.6
Thermal conductivity (W/(m·K))600°C
0.20
0.25
0.35
0.40
0.48
0.60
0.75
Max. service temperature (°C)
700
800
1000
1100
1150
1300
1350
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
Low-rebound gunning materials with good adhesion, low shrinkage and high strength. Applications include blast furnaces, hot-blast stoves, pipelines and flue-system protective layers.
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Refractory gunning mixes
Property
HD-PT40
HD-PT45
HD-PT50
HD-PT60
HD-PT65
HD-PT70
Al₂O₃ (%)
40
45
50
60
65
70
Bulk density (g/cm³)
1.6±0.1
1.8±0.1
2.0±0.1
2.2±0.1
2.3±0.1
≥2.4
Cold crushing strength (MPa)110°C × 24h
8
12
15
15
15
15
Cold crushing strength (MPa)1200°C × 3h
12
15
20
20
20
20
Permanent linear change (%)1200°C × 3h
±1.0
±1.0
±1.1
±1.2
±1.1
±1.0
Thermal conductivity (W/(m·K))600°C
0.50
0.55
0.65
—
—
—
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
Shaped refractories for steel-reheating furnace platforms, sliding rails and launders. High-temperature strength, wear resistance and slag-corrosion resistance support demanding furnace duty; non-sticking castables are used on furnace bottoms and platforms.
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Platform, sliding rail & launder blocks
Property
HD-CH1
HD-CH2
HD-CH3
Al₂O₃ + Cr₂O₃ (%)
90
—
90
Al₂O₃ + ZrO₂ (%)
—
93
—
Bulk density (g/cm³)110°C × 24h
3.2
3.3
3.0
Modulus of rupture (MPa)110°C × 24h
10
10
10
Modulus of rupture (MPa)1500°C × 3h
12
12
12
Cold crushing strength (MPa)110°C × 24h
40
40
30
Cold crushing strength (MPa)1500°C × 3h
100
100
80
Permanent linear change (%)110°C × 24h
±0.1
±0.1
±0.1
Permanent linear change (%)1500°C × 3h
+0.3~-0.5
+0.3~-0.5
+0.3~-0.5
Chemical composition is given as combined oxide content: HD-CH1 and HD-CH3 as Al₂O₃ + Cr₂O₃, HD-CH2 as Al₂O₃ + ZrO₂.
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
Reinforced castables with strength at medium and high temperatures, volume stability, wear resistance and thermal-shock resistance for industrial furnaces and thermal equipment.
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Steel-fibre reinforced castables
Property
HD-RFJ60
HD-RFJ70
HD-RFJ75
HD-RFJ80
Al₂O₃ (%)
60
70
75
80
Bulk density (g/cm³)110°C × 24h
2.4
2.5
2.7
2.8
Cold modulus of rupture (MPa)110°C × 24h
10
11
12
14
Cold modulus of rupture (MPa)1100°C × 3h
10
11
12
14
Cold crushing strength (MPa)110°C × 24h
40
50
60
70
Cold crushing strength (MPa)1100°C × 3h
50
60
70
80
Permanent linear change (%)1100°C × 3h
±0.5
±0.5
±0.5
±0.5
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
Heat-storage media for regenerative heating furnaces. High-alumina, mullite and mullite-corundum grades are available in nominal diameters of 15, 18 and 20 mm.
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Regenerative (heat-storage) balls
Property
HD-LQHigh-alumina base
HD-MQMullite base
HD-GMQMullite-corundum base
Al₂O₃ (%)
70
65
78
Bulk density (g/cm³)
2.4
2.2
2.5
Cold crushing strength (MPa)
40
50
60
Thermal conductivity (W/(m·K))800°C
1.4
1.4
1.5
Thermal shock resistance (cycles)1100°C, water quench
30
35
25
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
Castables for erosion-prone areas of circulating fluidized-bed boilers, pellet rotary kilns, cement rotary kilns and other industrial kilns. Designed for strength, volume stability and wear, corrosion and thermal-shock resistance.
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Wear-resistant castables
Property
HD-NMJ60
HD-NMJ65
HD-NMJ70
HD-NMJ75
HD-NMJ80
HD-NMJ85
Al₂O₃ (%)
65
65
70
75
80
85
Bulk density (g/cm³)110°C × 24h
2.3
2.4
2.5
2.6
2.7
2.8
Modulus of rupture (MPa)110°C × 24h
8
8
8
9
10
12
Modulus of rupture (MPa)1000°C × 3h
10
10
11
12
12
13
Cold crushing strength (MPa)110°C × 24h
40
50
60
65
70
75
Cold crushing strength (MPa)1000°C × 3h
50
60
70
80
90
100
Permanent linear change after firing (%)1000°C × 3h
±0.5
±0.3
±0.3
±0.3
±0.3
±0.3
Cold abrasion loss (cm³)1000°C × 3h
8
9
8
7
7
6
Thermal shock resistance (cycles)1000°C, water quench
15
20
20
20
20
20
Max. service temperature (°C)
1400
1450
1450
1550
1600
1650
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
Machine-formed, high-temperature-sintered anchors made with materials compatible with furnace lining castables. Features include strength, erosion and spalling resistance, and similar thermal expansion to the lining.
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Anchor bricks
Property
HD-LZ55
HD-LZ65
HD-LZ75
Al₂O₃ (%)
55
65
75
Apparent porosity (%)
≤22
≤20
≤18
Bulk density (g/cm³)110°C × 24h
2.3
2.5
2.5
Modulus of rupture (MPa)110°C × 24h
8
10
10
Modulus of rupture (MPa)1450°C × 3h
10
12
12
Cold crushing strength (MPa)110°C × 24h
35
50
60
Cold crushing strength (MPa)1450°C × 3h
45
60
80
Permanent linear change (%)1500°C × 2h
+0.1~-0.4
+0.3~-0.3
+0.3~-0.2
Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.
