Working liner insulation layer, especially suitable for complex shape, limited position, requiring integrity, air tightness, high strength kiln lining and local section.
Thermal insulation refractory castable has small volume density, large porosity and low thermal conductivity, and is mostly used in the thermal insulation layer (non-working layer) of industrial kilns in the specific heat capacity project, but it can also be used in the construction working layer for the furnace lining with low refractories.
The furnace lining constructed with insulation castable has remarkable energy-saving effect, and can make the working lining thinner, reduce, environmental protection and energy saving, which is conducive to short shrinkage heat time and uniform furnace temperature
1.low thermal conductivity: especially at high temperature, low thermal conductivity, good thermal insulation performance.
2.good thermal shock resistance: in the use of temperature range, the brick does not deform, do not flake.
3.according to the different uses, the selection of reasonable mechanical strength, so that the light performance is good.
4.higher load softening temperature and smaller reburning rate, compared with similar material light firebrick, higher temperature, longer life, safer.
Used for lining blast furnaces, hot blast furnaces, electric furnace roofs, oxygen converters, reverberatory furnaces, and rotary kilns. They are also widely used as regenerative flat furnace checker bricks, plugs for pouring systems, and water mouth bricks, among other applications.
|
Name |
Grade I |
Grade 2 |
Grade 3 |
Special |
|
model |
LZ-75 |
LZ-65 |
LZ-55 |
LZ-82 |
|
AL2O3 %≥ |
75 |
65 |
55 |
82 |
|
Fe203 % < |
2.5 |
2.5 |
2.6 |
2.0 |
|
Bulk Density g/cm2 |
2.5 |
2.4 |
2.3 |
2.6 |
|
Cold Crushing Strength（MPa ≥） |
70 |
60 |
50 |
80 |
|
Refractoriness under load at 0.2Mpa(℃) |
1510 |
1460 |
1420 |
1550 |
|
Refractoriness（℃ ≥） |
1790 |
1770 |
1770 |
1770 |
|
Apparent porosity （% ≤） |
22 |
23 |
24 |
21 |
|
Linear Change Rate % |
-0.3 |
-0.4 |
-0.4 |
-0.2 |
Highland Refractory classifies Dry Impermeable Material based on raw material composition and target application scenarios to meet diverse anti-permeation needs, including High-Alumina Dry Impermeable Material (Al₂O₃ ≥75%, suitable for ultra-high-temperature anti-slag penetration zones like steel ladle slag lines) and Silicon Carbide Dry Impermeable Material (SiC ≥60%, ideal for high-wear, anti-corrosion environments such as cement kiln transition zones). Additionally, there is Low-Cement Dry Impermeable Material (cement content ≤3%), designed for low-heat-release scenarios like glass kiln pool walls—each type of Dry Impermeable Material is formulated with ultra-fine impermeable additives and graded aggregates, requiring no water mixing during construction (applied directly in dry form and compacted) to form a dense, pore-sealed structure that resists molten slag, gas, and moisture penetration at temperatures ranging from 1400℃ to 1700℃.
Highland’s Dry Impermeable Material stands out in harsh anti-permeation environments with core strengths: it adopts dry construction, eliminating the risk of structural cracking caused by water evaporation during curing (a common issue with wet-mixed refractories) and ensuring long-term structural integrity; it forms an ultra-dense matrix with low porosity (≤18%), effectively blocking the penetration of molten slag, high-temperature gases, and moisture—greatly reducing equipment corrosion and extending service life by 30-50% compared to traditional permeable refractories; it also features excellent workability, as it can be easily compacted into irregular shapes (such as furnace corners or pipe joints) without on-site mixing, saving construction time and labor costs. These advantages make Dry Impermeable Material a reliable choice for critical anti-permeation zones in high-temperature equipment.
Dry Impermeable Material is widely used across sectors requiring strict anti-penetration protection: in the steel industry, it lines steel ladle slag lines and tundish weirs, resisting molten slag penetration to avoid refractory erosion and steel quality contamination; in the cement industry, it serves as the inner lining of cement kiln burning zone transition areas, blocking alkaline clinker and dust penetration to reduce kiln skin formation and maintenance frequency; in the glass industry, it forms the lower pool walls of glass kilns, preventing molten glass and volatile components from seeping into refractory substrates and causing structural damage; in the petrochemical industry, it is applied to reactor linings in high-temperature gas environments, resisting corrosive gas penetration to maintain equipment safety. Each application leverages Dry Impermeable Material’s unique ability to provide long-lasting, pore-free protection.
Dry Impermeable Material (Highland) excels in long-term anti-permeation performance and dry construction convenience, making it ideal for static, critical anti-slag/gas zones (like steel ladle slag lines or glass kiln pool walls) where permanent, pore-sealed protection is prioritized—its dry-form application also avoids curing-related risks in water-sensitive environments. Refractory Spraying Material, by contrast, specializes in rapid, large-area lining and repair (e.g., full furnace wall spraying), with its sprayable nature enabling quick coverage of extensive or irregular surfaces during equipment downtime. Each product serves distinct needs: Dry Impermeable Material dominates long-term, static anti-permeation tasks, while Refractory Spraying Material leads in fast, large-scale dynamic lining projects.
Highland Refractory is a trusted producer of high-quality Dry Impermeable Material, backed by 30+ years of refractory expertise—we source high-purity aggregates (high-alumina clinker, fused silicon carbide) and premium impermeable additives, using advanced mixing technologies to ensure uniform dispersion of functional components; every batch of Dry Impermeable Material undergoes strict quality testing, including porosity measurement, slag resistance tests, and high-temperature compression strength checks, meeting ISO 9001/CE standards. With an annual production capacity of 60,000 tons and services for 1,500+ clients across Asia, Africa, Europe, and Australia, we also tailor formulations (e.g., adjusting impermeability levels for specific slag types) to match industry needs, ensuring reliable performance of our Dry Impermeable Material.
Choosing Highland Refractory for your Dry Impermeable Material needs means accessing tailored excellence and comprehensive support: we offer customization (adjusting raw material content, porosity, and compactability to fit your equipment—e.g., high-alumina grades for steel ladles or silicon carbide grades for cement kilns), fast delivery (3–7 days for standard types in stock, 10–15 days for custom formulations), and bulk discounts (5–10% off orders ≥8 tons). We also provide free samples, detailed technical data sheets (including compaction pressure and installation guidelines), and 24/7 technical guidance, ensuring your Dry Impermeable Material integrates seamlessly into projects and delivers long-term, pore-free anti-permeation protection in high-temperature environments.
A: Yes, we do provide free samples of our standard Dry Impermeable Material. You only need to bear the shipping cost to your address. For samples of customized Dry Impermeable Material with special requirements like higher impermeability or specific raw material ratios, a small charge may apply, but it will be refunded if you place a large - scale order later.
A: If you order our standard Dry Impermeable Material that's in stock, you can expect delivery within 3 - 7 days. However, for customized Dry Impermeable Material with particular features such as enhanced wear resistance or a different particle size distribution, it will take 10 - 15 days as we'll need extra time for production and quality checks. For large - scale bulk orders, we'll work with you to set an appropriate delivery schedule according to your project's timeline.
A: Our Dry Impermeable Material is packaged with great care. It is first sealed in moisture - proof bags to prevent any moisture from affecting its performance and structure. These bags are then placed in sturdy wooden crates or large cardboard boxes depending on the quantity. The containers are clearly labeled with handling instructions like "Keep Dry", "Handle with Care" and all the relevant product details.
A: We accept T/T (Telegraphic Transfer) and PayPal for payments. Just like with our other products, we require full payment before we dispatch the Dry Impermeable Material. We are constantly exploring additional payment options to make it more convenient for our customers.
A: Absolutely. Every batch of Dry Impermeable Material we produce undergoes strict quality control. You will receive a detailed quality inspection report that includes information about its chemical composition, porosity, impermeability, and high - temperature performance. This report will give you a clear understanding of the quality of the Dry Impermeable Material you are purchasing.
A: We are sorry if you receive damaged Dry Impermeable Material. Please contact our customer service immediately and provide photos and a detailed description of the damage. We will promptly arrange to replace the damaged product with a new, undamaged batch at no extra cost to you.
High alumina fine powder is a powder material with alumina (Al2O3) as the main component.
Refractory cement, also known as aluminate cement, is a fire-resistant hydraulic cementitious material.
High alumina fine powder is a powder material with alumina (Al2O3) as the main component.
Steel fiber wear-resistant castables are widely used in high temperature and wear-resistant environments in many industrial fields such as metallurgy, building materials, and chemicals.
White corundum castable is a high-quality high-temperature refractory material with high-purity alumina powder as the main raw material.
High aluminum castable refers to a refractory castable with Al2O3 content greater than 48%.
Lightweight insulation castable is a refractory with low density and excellent insulation properties.
Corundum mullite castable is a high-quality high-performance refractory material with high thermal conductivity, insulation, good chemical stability and resistance to reducing agents.
Silicon carbide castable is an amorphous refractory material with silicon carbide as the main component.
Chrome corundum castable is a high-performance amorphous refractory material composed of corundum and chromium. It has high melting point, high hardness, high stability and excellent slag resistance and wear resistance.
high alumina cement is a powder material with alumina (Al2O3) as the main component.
Plastic is an amorphous refractory material in the form of hard mud and has high plasticity.
Refractory spray coating is a kind of amorphous refractory material, which is applied to the lining of thermal equipment by spraying construction method.
Widely used in a variety of furnace front package, transfer package, ladle insulation layer...
High temperature and high strength repair material is a special material used to repair equipment and structures in high temperature environments.
Lining coating is a functional material used on the surface of high-temperature equipment or facilities...
