Low creep clay bricks are clay refractory bricks with low creep rate made of special pyrophyllite, andalusite, and fused mullite as the main raw materials, with a small amount of additives added, and are made by three-level batching, co-grinding fine powder and other processes.
(1) Low creep rate at high temperature;
(2) High compressive strength, wear resistance and impact resistance;
(3) Strong resistance to chemical corrosion;
(4) Good high temperature volume stability;
Blast furnace hot blast furnace: widely used in the lower wall, lower checker brick, supporting chord and other parts of the regenerator of the blast furnace hot blast furnace. It can withstand the scouring and erosion of high-temperature hot air, ensure the normal operation and thermal efficiency of the hot blast furnace, and play an important role in improving the efficiency and quality of ironmaking production.
Other high-temperature kilns: In addition to blast furnace hot blast furnaces, it is also suitable for various industrial kilns that need to operate stably for a long time under high temperature and high pressure conditions, such as glass melting furnaces, cement rotary kilns, etc. It can be used as lining materials to protect the steel structure of the kiln, reduce heat loss, and improve energy efficiency.
|
Project |
Index |
|||||||
|
DRN-128A |
DRN-128B |
DRN-125 |
DRN-120 |
DRN-115 |
DRN-110 |
DRN-105 |
||
|
W(Al2O3)/% |
μ0≥ |
45 |
45 |
45 |
42 |
40 |
36 |
32 |
|
σ |
2.5 |
|||||||
|
W(Fe2O3)/% |
μ0≤ |
1.5 |
1.8 |
1.5 |
1.8 |
1.9 |
2.0 |
2.0 |
|
σ |
0.4 |
|||||||
|
Apparent porosity/% |
μ0≤ |
15(17) |
18(20) |
20(22) |
20(22) |
22(24) |
22(24) |
22(24) |
|
σ |
2 |
|||||||
|
Normal temperature compressive strength/Mpa |
μ0≥ |
60(50) |
55(45) |
43(35) |
35(25) |
35(25) |
30(20) |
25(20) |
|
Xmin |
50(40) |
45(35) |
35(25) |
25(20) |
25(20) |
25(20) |
25(12) |
|
|
σ |
10 |
|||||||
|
High temperature flexural strength/Mpa |
μ0≥ |
6(5) |
5(4) |
|||||
|
Creep rate/% （0.2Mpa,50h) |
μ0≤ |
1280℃× |
1280℃× |
1250℃ |
1200℃ |
1150℃ |
1100℃ |
1050℃ |
|
σ |
0.1 |
|||||||
|
Heating wire permanent change/% |
U-L |
1400℃×2h |
1350℃×2h |
1300℃×2h |
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Highland Refractory classifies Low Creep Clay Bricks by alumina content, application scenarios, and performance to meet diverse industrial needs:
By Alumina Content:
Standard Low Creep Clay Bricks (Al₂O₃ 32–38%): Balanced cost-performance for medium-temperature furnaces (e.g., boiler linings).
High-Alumina Low Creep Clay Bricks (Al₂O₃ 38–45%): Enhanced refractoriness for high-temperature zones (e.g., cement kiln transition areas).
By Application:
Furnace Lining Bricks: Stable structure for steel mill reheating furnaces.
Kiln Crown Bricks: Optimized load-bearing/heat resistance for glass kiln crowns.
Highland’s Low Creep Clay Bricks excel in high-temperature environments:
Ultra-Low Creep Rate: ≤0.2% creep at 1050–1280℃ (0.2MPa, 50h) ensures long-term dimensional stability.
High Thermal Stability: ≤±0.5% permanent linear change after 1300–1400℃ × 2h heating, resisting thermal shock cracking.
Strong Load-Bearing: Compressive strength reaches 25–60MPa, supporting heavy industrial loads (e.g., cement kiln linings).
Energy-Saving & Long Life: 15–22% apparent porosity balances insulation/strength, reducing heat loss by 20% and extending service life by 30% vs. conventional clay bricks.
These bricks serve critical high-temperature equipment across sectors:
Steel Industry: Reheating furnace linings, soaking pits (withstand thermal cycling/mechanical stress).
Cement Industry: Rotary kiln transition zones, preheater towers (resist alkaline slag erosion under high temp/load).
Glass Industry: Kiln crowns, regenerators (ensure stable glass melting temps with low creep to avoid deformation).
Petrochemical Industry: Furnace tubes, catalytic cracking units (resist high-temperature hydrocarbon corrosion).
| Aspect | Low Creep Clay Bricks (Highland) | Regular Fire Clay Bricks (Industry) |
| Creep Resistance | Ultra-low creep (≤0.2% at 1050–1280℃) | Higher creep (≥0.5% in same conditions) |
| Thermal Stability | ≤±0.5% permanent linear change | ≥±1% permanent linear change |
| Compressive Strength | 25–60MPa (strong load-bearing) | 15–30MPa |
| Service Life | Extends by 30%+ in high-temp cycles | Shorter service life due to creep |
Choose Highland for 3 unmatched strengths:
30+ Years of Expertise: Specialized in refractory R&D/production since 1993, mastering low creep clay brick formulations.
Strict Quality Control: ISO 9001, TUV, SGS certified; 3-stage testing (raw materials → sintering → creep rate).
Global Trust: 1,500+ clients in 100+ countries (e.g., Asian steel mills, European cement plants) with 95% repeat orders.
Highland delivers end-to-end value:
Customization: Tailor size/shape/alumina content (molds ready in 3–5 days for small batches).
Supply Chain Efficiency: 60,000 tons annual capacity, 3–7 days standard delivery, bulk discounts.
Full Support: On-site installation guidance, 24/7 tech support, 5-year warranty for creep-related defects.
Logistics Reliability: Partner with Qingdao/Shanghai ports, shock-proof packaging (≤0.8% transport damage).
Zhengzhou Gaoyuan Refractory Co., Ltd., a trusted refractory manufacturer with over 30 years of experience in the refractory industry, offers factory direct sales, fast delivery within 3-7 days, and exclusive bulk purchase discounts to meet the high-temperature demands of the global petrochemical, steel, cement, and glass industries. We provide over 1,500 customers worldwide with customized refractory solutions that balance performance, durability, and cost-effectiveness.
Answer: We use export - grade wooden crates with shock - absorbent foam between bricks to prevent collision. This packaging ensures a transport damage rate ≤ 0.8%. For long - distance sea or air transport, we also reinforce crates with steel straps for extra protection.
Answer: Yes. We provide 3 - 5 free standard samples. For custom - shaped samples, a small mold fee may apply (and it’s refundable when you place bulk orders). Samples are shipped within 2 - 3 business days.
Answer: Our ISO 9001:2015 certification ensures strict quality control at every stage. This includes raw material screening (using high - purity clay with Fe₂O₃ ≤ 2.0%), precise temperature control during sintering, and final inspection (testing creep rate, compressive strength, etc.). It guarantees consistent performance of each brick.
Answer: We offer both onsite and virtual factory tours to show the full production process: Initial Screening → Crushing → Fine Screening → Ingredient Mixing → Forming → Sintering → Packing. Clients can also request real - time production videos for their specific orders.
Answer: Beyond the 5 - year warranty for creep - related issues, we provide lifetime technical support. This includes furnace maintenance guidance, residual brick inspection, and for large projects, our team can assist with on - site installation and performance monitoring.
