The lightweight thermal insulation refractory bricks of Itema Ceramic enterprises are graded according to temperature.
The reasonable selection of materials can meet different thermal needs.
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YDT Series of physical and chemical indicators of lightweight thermal insulation bricks
| Y-23L | Y-23 | Y-23HS | Y-25 | Y-26 | Y-26HS | Y-26-60 | Y-28 | Y-30 | Y-32 | ||
| Classification temperature ASTM C155-97℃ | 1260 | 1260 | 1250 | 1350 | 1430 | 1430 | 1430 | 1540 | 1550 | 1760 | |
| Classification temperature F | 2300 | 2300 | 2300 | 2500 | 2600 | 2500 | 2600 | 2800 | 3000 | 3200 | |
| Bulk density ASTM C134-95 g/cm³ | 0.55 | 0.6 | 0.67 | 0.8 | 0.8 | 0.9 | 0.8 | 0.9 | 1.03 | 1.25 | |
| Bulk density Ib/t3 | 34.1 | 37.2 | 41.54 | 49.6 | 49.6 | 55.8 | 49.6 | 55.8 | 63.86 | 77.5 | |
| Compressive strength ASTM C133-97 Mpa | 1 | 1.2 | 2.1 | 2 | 2 | 4 | 2 | 2.6 | 2.8 | 3.4 | |
| Cold crushing strength | 145 | 170 | 305 | 284 | 284 | 580 | 284 | 370 | 398 | 484 | |
| Flexural strength ASTM C133-97 Mpa | 0.7 | 0.9 | 1.3 | 1.2 | 1.5 | 2.5 | 1.5 | 1.5 | 1.7 | 2 | |
| Modulus of rupture lb/in² | 101 | 128 | 189 | 170 | 218 | 362 | 218 | 218 | 247 | 290 | |
| Rate of change of reburning line ASTM C210-95% | -0.3 | -0.3 | -0.2 | -0.3 | -0.5 | -0.5 | -0.5 | -0.8 | -0.8 | -0.9 | |
| Change rate of reheating line ℃*24hs | 1230 | 1230 | 1230 | 1350 | 1400 | 1400 | 1400 | 1510 | 1620 | 1730 | |
| Thermal conductivity | 400℃ | 0.15 | 0.17 | 0.21 | 0.24 | 0.24 | 0.29 | 0.24 | 0.3 | 0.4 | 0.49 |
| ASTM C182-88(w/m.k) Thermal conductivity | 500℃ | 0.17 | 0.19 | 0.25 | 0.28 | 0.27 | 0.32 | 0.27 | 0.32 | 0.42 | 0.5 |
| 800℃ | 0.19 | 0.22 | 0.3 | 0.32 | 0.3 | 0.35 | 0.3 | 0.35 | 0.44 | 0.51 | |
| 1000℃ | 0.22 | 0.25 | 0.32 | 0.37 | 0.32 | 0.38 | 0.32 | 0.38 | 0.45 | 0.53 | |
| 1200℃ | 0.35 | 0.41 | 0.35 | 0.39 | 0.47 | 0.55 | |||||
| Chemcial Analysis | |||||||||||
| AL₂O₃ % | 45 | 45 | 45 | 50 | 55 | 55 | 60 | 65 | 72 | 75 | |
| Fe₂O₃ % | 1 | 1 | 1 | 1 | 0.9 | 0.9 | 0.7 | 0.7 | 0.6 | 0.4 | |
| K₂O+Na₂O % | 1.1 | 1.1 | 1.1 | 1.1 | 1 | 1 | 1 | 0.6 | 0.2 | 0.1 | |
YDT A series insulation bricks
| YDT A-Series | |||||||
| A-1 | A-2 | A-3 | A-4 | A-5 | A-6 | A-7 | |
| Tem:reheating shrinkage less than 2%,℃*12hrs | 900 | 1000 | 1100 | 1200 | 1300 | 1400 | 1500 |
| Bulk density g/cm³ | 0.50 | 0.50 | 0.50 | 0.55 | 0.60 | 0.70 | 0.75 |
| Cold crushing strength kgf/cm² | 5 | 5 | 5 | 8 | 8 | 10 | 10 |
| Thermal conductivity(AVG350℃),W/m.k | 0.13 | 0.14 | 0.15 | 0.16 | 0.17 | 0.20 | 0.22 |
YDT B series insulation bricks
| YDT B-Series | |||||||
| B-1 | B-2 | B-3 | B-4 | B-5 | B-6 | B-7 | |
| Tem:reheating shrinkage less than 2%,℃*12hrs | 900 | 1000 | 1100 | 1200 | 1300 | 1400 | 1500 |
| Bulk density g/cm³ | 0.70 | 0.70 | 0.75 | 0.60 | 0.80 | 0.90 | 1.00 |
| Cold crushing strength kgf/cm² | 25 | 25 | 25 | 25 | 25 | 30 | 30 |
| Thermal conductivity(AVG350℃),W/m.k | 0.17 | 0.18 | 0.20 | 0.22 | 0.23 | 0.27 | 0.31 |
YDT C series insulation bricks
| YDT C-Series | |||
| C-1 | C-2 | C-3 | |
| Tem:reheating shrinkage less than 2%,℃*12hrs | 1300 | 1400 | 1500 |
| Bulk density g/cm³ | 1.10 | 1.20 | 1.25 |
| Cold crushing strength kgf/cm² | 50 | 70 | 100 |
| Thermal conductivity(AVG350℃),W/m.k | 0.30 | 0.38 | 0.45 |
It has a good heat insulation effect and can thin the thickness of the furnace wall
Due to its light weight and low thermal conductivity, very little heat energy is accumulated inside the brick, which can with rapid temperature rise and fall, the energy-saving effect is obvious in the intermittent operation of the kiln.
It has a very low iron and alkali metal low melt content, so it has high refractoriness. The high alumina content allows it to maintain good performance in a reducing atmosphere
Precise dimensions, speed up the masonry speed, the brick joints are thin and neat and consistent. Ensure the high strength of the masonry, high stability.
The available specifications are 230×610×64 (or 76)mm and 250×640×64mm. Can be processed into special shapes to reduce the number of blocks and masonry
It protects the bricks during transportation and facilitates the handling of the construction site at the same time.
