REFRACTORY PRODUCTS
Product Category
Zirconia Series Refractory Bricks
Corundum Series Refractory Bricks
Alumina-silicon Refractory Bricks
Insulating Bricks
Monolithic Refractories
Magnesia Series Refractory Bricks
Contact Us
Phone / WhatsApp / Wechat:
0086 19059612888
Add:Micun & Laiji Refractory Industry Zone, Xinmi City, Henan Province, China
Zirconia Series Refractory Bricks
Offering high-performance zirconia refractory bricks, known for exceptional thermal shock resistance and erosion stability. They are the ideal lining solution for glass furnaces, ceramic kilns, and other ultra-high-temperature industrial applications.
Thermal Shock Resistance‌ ‌Ultra-High Temperature‌ ‌Erosion Stability

Al2O3:45-51%;

ZrO2:32-40%;

SiO2:12-15%;

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Al₂O₃:≥48%;

ZrO₂:≥30%;

Bulk density:≥3.2g/cm³;

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ZrO₂:≥6%;

Al₂O₃:≥48%;

Bulk density:≥2.8g/cm³;

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ZrO₂:≥65%;

Bulk densit:y≥3.75g/cm³;

Cold crushing strength:≥80MPa;

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Corundum Series Refractory Bricks
High-strength corundum refractory bricks, distinguished by outstanding abrasion resistance and volume stability at high temperatures. They are widely used in critical areas of carbon baking furnaces, gasifiers, and tunnel kilns.
‌High Abrasion Resistance‌ ‌Volume Stability‌ ‌Structural Integrity ‌High Purity‌

Al₂O₃:≥62%;

Cr₂O₃:≥10%;

Cold Crushing Strength:≥100MPa;

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Al₂O₃:≥80%;

Bulk Density:≥2.75g/cm³;

Cold Crushing Strength:≥85MPa;

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Al₂O₃:≥95%;

Bulk density:≥3.15g/cm³;

Apparent Porosity:≤18%;

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Al₂O₃:≥70%;

Cr₂O₃:≥10%;

Bulk Density:≥3.3g/cm³;

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Al₂O₃:≥62%;

Cr₂O₃:≥10%;

Bulk density:≥3.25g/cm³;

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Alumina-silicon Refractory Bricks
A comprehensive range of alumina-silica refractory bricks, from fireclay to high-alumina types. They provide a reliable balance of good refractoriness and cost-effectiveness for various medium-to-high temperature industrial furnaces.
Cost-Effective Versatility‌ ‌Medium-High Temp‌ ‌Reliable Refractoriness‌ Spalling Resistance‌

Al₂O₃:90-99%;

Bulk Density:2.8-3.2g/cm³;

Size:Ф6-Ф70;

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Al₂O₃:≥75%;

SiC+SiO₂:≥30%;

Bulk Density:≥2.65g/cm³;

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Also Called:Silica Mullite Brick;

Al₂O₃:60-65%;

Bulk Density:≥2.55g/cm³;

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SiO₂:≥97%;

Bulk Density:≥1.86g/cm³;

Cold Crushing Strength:≥40MPa;

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Al₂O₃:≥45%;

Apparent Porosity:≤15%;

Cold Crushing Strength:≥50MPa;

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Al₂O₃:75-77%;

Bulk Density:2.650g/cm³;

Cold Crushing Strength:≥60MPa;

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Al₂O₃:55-82%;

Bulk Density:2.25-2.7g/cm³;

Refractoriness(SK):36-40;

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Al₂O₃:≥57%;

Fe₂O₃:≤1.2%;

Bulk Density:≥2.40g/cm³;

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Low-Porosity:≤15%;

Low-Iron:≤0.8%;

Low-Creep:≤0.5%;

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Al₂O₃:≥65%;

Bulk Densit:≥2.50g/cm³;

Cold Crushing Strength:≥75MPa;

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Al₂O₃:≥ 57%;

Bulk density:≥2.40g/cm³;

Cold Crushing Strength:≥60MPa;

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Al₂O₃:≥57%;

Fe₂O₃:≤1.2%;

Bulk Density:≥2.40g/cm³;

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Insulating Bricks
Engineered for maximum energy efficiency, our insulating bricks offer low thermal conductivity and lightweight construction. They are ideal for reducing heat loss and improving temperature control in industrial furnace linings and kilns.
Low Thermal Conductivity‌ Energy Saving‌ ‌Lightweight Structure‌ ‌Furnace insulation layer ‌Heat Loss Reduction‌ Rapid Heating/Cooling

SiO₂:91%;

Bulk Density:0.8-1.2g/cm³;

Thermal Conductivity :0.26-0.35;

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Al₂O₃:90-99%;

Bulk Density:1.35-1.70g/cm³;

Cold Crushing Strength:8-20MPa;

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Al₂O₃:40-70%;

Bulk Density:0.60-1.10g/cm³;

Thermal Conductivity:0.20-0.60;

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Al₂O₃:≥48%;

Bulk Density:0.6-1.2g/cm³;

Thermal Conductivity :0.25-0.50;

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Bulk Density:0.6-1.3g/cm³;

Thermal Conductivity:0.25-0.55;

Cold Crushing Strength:1.5-8MPa;

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Monolithic Refractories
Providing a full line of monolithic refractories, including castables, plastics, and repair mixes. These materials allow for flexible installation and rapid maintenance, effectively reducing kiln downtime and overall repair costs.
Rapid Installation/Repair‌ ‌Flexible Application‌ ‌Downtime Reduction Custom Formulations‌ ‌Cold Application‌

Al₂O₃:46-95%;

Refractoriness:1300-1790℃;

Application:Brick Masonry;

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Type:CA50,CA70,CA80;

Al₂O₃:50-82%;

Initial Setting Time:30-240min;

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Al₂O₃:46%-60%;

Fe₂O₃: 0.7%-1.0%;

Operating Temp:1300-1500℃;

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ZrO₂:≥30%;

Al₂O₃:≥50%;

Bulk Density:≥2.85g/cm³;

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ZrO₂:≥63%;

Bulk Density:≥3.3g/cm³;

Max Particle Size:5mm;

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Al₂O₃:≥45%;

Bulk Density:1.-1.8g/cm³;

Operating Temp:1300-1500℃;

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SiC:76-85%;

Bulk Density:≥2.24g/cm³;

Feature:Wear resistant;

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Bulk Density:0.8-1.3g/cm³;

Operating Temp:1200-1300℃;

Cold Crushing Strength:2.0-20MPa;

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Al₂O₃:42-85%;

Refractoriness:≥1640℃;

Bulk Density:2.15-.65g/cm³;

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Magnesia Series Refractory Bricks
Magnesia series refractory bricks are engineered for alkaline operating conditions, offering excellent resistance to basic slag corrosion. They are essential linings for converters, electric arc furnaces, and cement rotary kilns in the steel and building materials industries.
Basic Slag Defense‌ ‌Alkaline Environment‌ ‌Steelmaking Essential‌ ‌High Load Resistance

MgO:70-80%;

Al₂O₃:8-20%;

Bulk Density:2.85-3.15g/cm³;

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MgO:85-88%;

Bulk Density:2.95g/cm³;

Cold Crushing Strength:≥80MPa;

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MgO:87-97.5%;

Bulk Density:2.85-3.20g/cm³;

Cold Crushing Strength:≥50MPa;

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MgO:≥40%;

Cr₂O₃:≥8%;

Cold Crushing Strength:≥25MPa;

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MgO:69-85%;

C:5-18%;

Bulk Density:2.85-3.2g/cm3;

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About XZK Group

Strengths
Innovation
R&D Team
Facilities
Honors
Product Portfolio
Specializing in premium zircon, corundum, sintered AZS, and monolithics. With a $70M+ annual output, we deliver durable linings for global high-temp industries.
Capacity
4 automated microcomputer batching systems.
4 ultra-high-temp tunnel kilns & 5 shuttle kilns.
20+ CNC hydraulic presses (630-1500T).
Digitalized workshops with 100,000T annual capacity.
Core Strengths
Core Strengths
Core Strengths
Core Strengths
Core Strengths
💡
93 patents, featuring the "Tri-Resist Brick" for glass kilns. Field-proven for superior corrosion and thermal shock resistance.
📜
Co-authored multiple National Standards for Andalusite, Chrome-Corundum, and Zircon bricks with CBMA.
🤝
Strategic partner to Fortune 500 leaders: China Baowu, CNBM, CSG, Xinyi, and Kibing Glass.
Tech & Innovation
Tech & Innovation
Tech & Innovation
Expert R&D Team
Led by Prof. Shi Gan, our 40+ engineers leverage advanced testing centers to drive innovation in green refractory technologies.
Professor Shi Gan
Prof. Shi Gan
Chief Scientist
Senior Engineer & National Expert (State Council Allowance).
Key drafter of 5+ national refractory standards.
Inventor of "Tri-Resist Brick", maximizing glass furnace lifespan.
R&D Center
Laboratory Equipment
Zhongke Refractories
Insulating Materials Base: Alumina Bubble, Mullite, High-Alumina & Fireclay bricks.
Zhongke New Materials
Special Refractories Base: Chrome-Corundum, Tri-Resist, and Low-Porosity bricks.
Henruida New Materials
Premium Refractories Base: Zircon, Corundum, Sintered AZS, and monolithics.
Zhengzhou Zhongke Refractories Co., Ltd. Zhengzhou Zhongke New Materials Co., Ltd. Zhengzhou Henruida New Materials Co., Ltd.
Certifications & Honors

Certified by ISO 9001, 14001, 45001, 50001 Management Systems.

Honored as:

  • National High-Tech Enterprise
  • Specialized & Innovative SME
  • Provincial Green Factory
  • Grade A Environmental Enterprise
Certifications & Honors
Beginning with professional consultation to accurately identify and address specific requirements
One-to-one Service
We offer one-on-one dedicated sales and technical team services to perfectly solve any refractory material problems you encounter
Professional Solution
The company has over 30 technical R&D personnel and can provide professional solutions based on the on-site conditions of customers
Quality Management System
We have a strict quality management system to ensure the stability of the quality of each batch of products.
Responsible After-sales Service
Our dedicated technical team will visit customers regularly and provide free lifetime after-sales service
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Contact Us
Phone/WhatsApp/Wechat: 0086 19059612888
Add: Micun Industrial Area, Xinmi City, Henan Province, China
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