Advantages of Bosheng rock wool compared to other insulation materials
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Bosheng rock wool |
Aluminum silicate |
Glass wool |
Slag wool |
| Product description | Raw materials are composed of basalt, gabbro, bauxite, dolomite, iron ore, etc. | Raw materials are mainly composed of flint clay clinker, industrial aluminum chloride, silicon powder, etc. | Raw materials are composed of quartz sand, dolomite, borax and soda. | Raw materials are mainly industrial slag, such as blast furnace slag, phosphor slag and fly ash. |
| Recommended temperature range (℃) | ≤650 | 600-1000 (standard type) | ≤350 | ≤350 |
| Linear shrinkage (%), 650℃ | ≤4.0 (650℃) | ≤5.0 | Melted | Serious fiber shrinkage |
| Thickness subsidence of tube shell | ≤2% | ≤5% | ≤5% | Easy to collapse |
| Thermal conductivity W/mK (℃) | 0.033-0.039 (25℃) | 0.09-0.12 (400℃) | 0.031-0.038 (25℃) | 0.038-0.044 (25℃) |
| Compressive strength | Medium | Low | Low | Medium |
| Tensile strength | Medium | Low | Medium | Low |
| Moisture absorption | ＜1% | ＜4% | ＜3% | ＜4% |
| Waterproof performance | Hydrophobicity ≥99% | Easy to absorb water | Worse | Worse |
| Corrosion resistance | Stronger | Weak | Stronger | Weak |
| Safety/health/environmental protection | Harmless to human health and can be degraded | Fiber can be inhaled but difficult to be degraded | Harmless to human health and can be degraded | Harmless to human health and limit exposure dose rate of dust |
