Your Professional High Alumina Brick Supplier
Shandong Luming New Materials Technology Co., LTD covers an area of 62 acres(approx. 41,000㎡),offers end-to-end production solutions. We are fully equipped with facilities for raw material crushing and pulverizing, automated castable batching, precast block molding, tunnel drying, high-temperature shuttle kiln firing, and precision processing of both precast and fired products, ensuring we can fulfill the requirements of customers in any industry.Shandong Luming New Materials Technology Co., LTD Founded in 2003, it is the largest unshaped refractory material production enterprise in Shandong Province, located in Zhoucun District, Zibo City.
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Why Choose Us
Quality Assurance
Our company obtained ISO9001 International Quality Management System certification from the China Quality Certification Centre (CQC) in 2006.
After-Sale Service
Professional and thoughtful after -sales team, let you worry about us after -sales Intimate service, strong after -sales team support.
Custom-Engineered Solutions
By pioneering new energy-saving refractory materials and innovating kiln lining designs, we dedicate ourselves to helping clients achieve energy conservation and emission reduction goals.
Production Market
We have established long-term business cooperation and joint product R&D projects with leading design institutes, including:Dalian Design & Research Institute of ACRE (Coking & Refractory Engineering Consulting Corporation, MCC)),Shandong Metallurgical Design Institute Co., Ltd,Changsha Research Institute of Mining and Metallurgy (CRIMM), Minmetals.
Refractoriness
The refractoriness of high alumina bricks is higher than that of clay, semi-silica bricks and other refractory materials we commonly use, up to 1750~1790 °C. It is a high-performance refractory material. Usually, refractory bricks with higher alumina content have better refractory performance.
Load softening temperature
Because the alumina content in high alumina bricks is relatively high and there are fewer impurities, the glass body that is easier to melt becomes less, so its load softening temperature is relatively high.
Thermal conductivity
High alumina bricks have excellent thermal conductivity, because there are fewer glass components with poor thermal conductivity inside high-alumina bricks, and the content of stone and corundum crystals with excellent thermal conductivity is relatively high, so the thermal conductivity is relatively good.
Thermal shock resistance
The thermal shock resistance of high-alumina bricks is between clay and siliceous products, mainly because the mullite content in high-alumina bricks is relatively high, which improves the particle structure of products and improves the thermal shock resistance of high-alumina bricks. stability.
Slag resistance
Because the alumina content in the high alumina brick is relatively large, it has a certain resistance to the erosion of acid slag and alkaline slag. At the same time, the slag resistance of high-alumina products also has a certain influence on the stability of products in slag. Usually, after high-temperature firing, the slag resistance of high-alumina bricks with fewer pores is better.
Specification
|
Item |
DRL-155 |
DRL-150 |
DRL-145 |
DRL-140 |
DRL-135 |
DRL-130 |
DRL-127 |
|
|
Al2O3,%≥ |
75 |
75 |
65 |
65 |
65 |
60 |
50 |
|
|
Bulk density, g/cm3 |
2.65-2.85 |
2.65-2.85 |
2.5-2.7 |
2.4-2.6 |
2.35-2.55 |
2.3-2.5 |
2.3-2.5 |
|
|
Porosity, %≤ |
20 |
21 |
21 |
22 |
22 |
22 |
23 |
|
|
CCS, Mpa ≥ |
60 |
60 |
60 |
55 |
55 |
55 |
50 |
|
|
Creep rate, % (0.2Mpa,50h) |
1550oc, ≤0.8 |
1500oc, ≤0.8 |
1450oc, ≤0.8 |
1400oc, ≤0.8 |
1350oc, ≤0.8 |
1300oc, ≤0.8 |
1270oc, ≤0.8 |
|
|
Reheat Linear Change, % |
1500oc,2h |
0.1-0.2 |
0.1-0.2 |
0.1-0.2 |
|
|
|
|
|
1450oc,2h |
|
|
|
0.1-0.2 |
0.1-0.4 |
0.1-0.4 |
0.1-0.4 |
|
The following is about the production process of refractory materials： Raw material preparation→material mix→forming→dry→sintering→cooling and QA→packaging and storage.
Raw material preparation
Choose high-purity alumina (Al2O3) powder as the main raw material. According to the need, some auxiliary materials may be added, such as clay, quartz sand, silica sand, etc. The selection and ratio of raw materials will affect the performance of the final product.
Material mix
Mix high-purity alumina powder and auxiliary materials in a certain proportion to ensure that various components are evenly distributed. The mixing process can be carried out by dry mixing or wet mixing.
Forming
The mixed raw materials are molded by a molding machine. Common molding methods include extrusion molding, compression molding, and injection molding. By shaping, adobes of the desired size and shape can be obtained.
Dry
The shaped bricks need to be dried to remove the moisture therein. It is usually dried naturally or heated in an oven.
Sintering
The dried bricks are put into a high-temperature furnace for sintering. The sintering temperature is generally above 1500°C, and the adobe undergoes particle bonding, grain growth, and densification at high temperatures. This allows the alumina powder in the adobe to undergo a chemical reaction to form a high-temperature stable mineral phase.
Classification of High Alumina Brick
|
Product Name/Item |
Special Gradehigh-alumina brick |
Grade Ihigh-alumina brick |
Grade IIhigh-alumina brick |
Grade IIIhigh-alumina brick |
|
Al2O3 content |
≥80% |
75%~80% |
60% ~ 75% |
55%~ 60% |
|
Fe2O3＜ |
2.0 |
2.5 |
2.5 |
2.6 |
|
Bulk Density |
2.6 |
2.5 |
2.4 |
2.3 |
|
Compression strength |
80 |
70 |
60 |
50 |
|
Refractoriness under load |
1550 |
1510℃ |
1460℃ |
1420℃ |
|
Working temperature |
1500℃ |
1500℃ |
1440℃ |
1350℃ |
|
Refractoriness |
1790℃ |
1790℃ |
1790℃ |
1790℃ |
|
Porosity |
21 |
22 |
23 |
24 |
|
Linear change rate |
-0.27 |
-0.37 |
-0.4 |
-0.4 |
Applications of High Alumina Brick
Steel Industry
Used in the construction of furnaces, ladles, and other high-temperature vessels due to their ability to withstand the extreme heat generated during steelmaking processes.
01
Cement Industry
Employed in kilns and rotary cement kilns for their resistance to alkali attacks and ability to maintain structural integrity at elevated temperatures.
02
Glass Industry
Utilized in the construction of glass tanks and regenerators, where they endure high temperatures and corrosive environments without deteriorating.
03
Petrochemical Industry
Applied in the lining of reactors, furnaces, and boilers, where they provide thermal insulation and resistance to chemical erosion.
04
Incineration Industry
Used to line the combustion chambers of incinerators, where they withstand the intense heat generated during waste disposal.
05
Packaging and Shipping
1.Packed on wooden pallets with moisture-proof film or wooden plates to prevent damage.
2.Keep in dry, ventilated areas.
FAQ
As one of the most professional high alumina brick manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy high alumina brick at competitive price from our factory.
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