As a high-tech enterprise with over four decades of expertise in energy-saving refractory materials, Zhengzhou Kewei leverages its full-industry-chain capabilities, technological innovation, and tailored services to deliver high-performance refractory solutions for metallurgy, building materials, chemical engineering, and other sectors. Located in Xinmi City—renowned as China’s "Capital of Refractories"—the company capitalizes on regional industrial cluster advantages and a robust supply chain ecosystem.

I. Corporate Overview: Four Decades of Technological Excellence

Founded in 1984, Zhengzhou Kewei Refractories Co., Ltd. operates under the Yunai Industrial Group with a registered capital of RMB 80 million. The company employs 300+ professionals, inclu- ding 28 senior and intermediate engineers, and maintains long-term R&D partnerships with leading institutions such as the Luoyang Institute of Refractories Research and University of Science and Technology Beijing.

Infrastructure & Facilities

- 6 high-temperature energy-efficient calcination kilns (100,000 tons/year capacity)

- 3 high-temperature energy-efficient tunnel kilns (100,000 tons/year capacity)

- 2 fully automated high-temperature shuttle kilns (9,000 tons/year capacity)

- 26 automated hydraulic presses (315–1,200 tons)

- 2 fully automated monolithic production lines (100,000 tons/year capacity)

- 1 standardized refractory laboratory equipped with environmental protection systems (desulfurization, denitrification, wet electrostatic precipitation, and real-time atmospheric monitoring).

Certifications & Accolades

- ISO 9001 Quality Management System

- Grade II General Contracting Qualifications in metallurgical engineering, environmental engineering, waterproofing/corrosion protection, and electronic/smart engineering.

- 26 patents, 17 trademarks, and 5 software copyrights.

- Recognized as a Henan Provincial Green Factory.

II. Core Competitive Advantages: Four Pillars of Market Leadership

Raw Material & Cost Efficiency

Strategically located near Xinmi’s abundant refractory mineral resources, Kewei operates 6 in-house calcination kilns to minimize transportation costs and ensure consistent product quality.

Automated Production & Customization

26 automated hydraulic presses (1,200T–315T) and full-scale production lines support custom-molded solutions for standard and specialty bricks.

R&D & Innovation

Collaborative R&D with national research institutes drives continuous product upgrades, including a patented energy-recycling kiln support system that enhances energy efficiency.

Comprehensive After-Sales Support

365-day rapid response service covering installation, commissioning, and technical guidance.

Proven expertise in EPC projects for large-scale kiln construction, integrating refractory supply and installation.

III. Product Portfolio: Full-Spectrum Refractory Solutions

Shaped Refractories

- High-Alumina Bricks: High refractoriness, thermal shock resistance, and corrosion resistance for blast furnaces, hot blast stoves, and electric furnace roofs (RMB 2,000–3,000/ton).

- Fireclay Bricks: Cost-effective, medium-strength bricks for general furnace walls and flues (RMB 1,000–2,000/ton).

- Silica Bricks: High load softening temperature and acid-slag resistance for coke ovens and glass furnace regenerators.

- Magnesia/Magnesia-Chrome Bricks: High-temperature and alkaline-slag resistance for converters, open-hearth furnaces, and cement kilns.

- Lightweight Insulating Bricks: Low thermal conductivity and lightweight design for furnace insulation layers.

- Silicon Carbide Bricks: High thermal conductivity, abrasion resistance, and erosion resistance for tapholes and nozzles.

- Custom Specialty Bricks: Hot blast stove bricks, carbon industry bricks, and SiC-mullite composite low-conductivity bricks.

Monolithic Refractories

- Castables: Lightweight high-alumina, low-cement, alkali-resistant, and steel-fiber-reinforced castables.

- Specialized Castables: Corundum-based castables for pusher-type reheating furnaces.

- Other Monolithics: Plastic refractories, gunning mixes, and ramming mixes for rapid repairs and lining construction.

IV. Clientele & Applications

Metallurgy: Sintering furnaces, blast furnaces, hot blast stoves, and coke ovens for large enterprises.

Building Materials: Glass furnaces (SMEs) and large-scale cement kiln projects (new construction/retrofits).

Other Industries: Custom solutions for ultra-large industrial furnaces in machinery manufacturing and chemical engineering.

V. Customization Process: End-to-End Project Execution

Needs Assessment: Detailed analysis of operating conditions (temperature, chemical environment, mechanical stress), dimensional requirements, and performance specifications.

Solution Design: Material selection, process optimization, and mold design for specialty bricks.

Mold Fabrication: Standard molds for conventional bricks; custom molds for specialty shapes.

Production: Strict adherence to raw material preparation, batching, mixing, forming, drying, firing, and quality inspection protocols.

Quality Control: Dimensional accuracy, physical properties (refractoriness, compressive strength, thermal shock resistance), and chemical stability testing with certification reports.

Delivery & Installation: Professional masonry guidance or turnkey construction services to ensure proper product performance.