The team is composed of scientists from Peking University, Institute of Metal Research, Chinese Academy of Sciences, Harbin University of Technology and Liaoning Zhuoyi New Materials Co., Ltd, including one academician, two national talents, four researchers and seven doctors. It has long been at the forefront of scientific and technological research and created many world-leading scientific and technological achievements, with nearly 30 years of experience devoting in the field of porous ceramics and composite materials, especially in the research on the application of materials in various industries for energy conservation and environmental protection.

Project Introduction

Direction 1: Porous Media Combustion Technology and Thermal Equipment

1.Introduction to Projects

Based on the preparation technology of porous silicon carbide ceramics owned by the team, the research on porous media combustion technology is carried out, focusing on the evolution law of temperature field and thermal stress field in porous media materials to clarify the failure mechanism of porous materials. A series of burners and thermal equipment which can be widely used in thermal, steel, non-ferrous metal, ceramics, chemical, textile, automotive and many other industries are accordingly developed.

This project can provide an efficient, energy-saving and clean method for gaseous fuel usage, and solve the problems of high NOx emission and high energy consumption in the process of gas usage, as well as the resulting environmental pollution such as haze, acid rain and damage to human health.

2.Potential Market

According to incomplete statistics, there are more than 1 million boilers in use nationwide, with a compound growth rate of more than 5%. Industrial kilns exceed 200,000 units, with a compound growth rate of more than 10%, and the overall market size exceeds 100 billion yuan.

3.Research Direction

（1） Research and Development of New High-Temperature Functional Materials

Focus on the R&D of the preparation technology of high temperature resistant porous ceramics of silicon carbide, alumina and zirconia to improve the mechanical and thermal properties of materials, especially their thermal conductivity and thermal shock resistance, by adjusting the composition, forming process and sintering process.

 

（2） Research and Development of Porous Media Combustion Technology

Focus on the study of the optimal combination model of mass and heat transfer, combustion performance and pollutant emission in porous media during combustion process, the change of temperature field and thermal stress field in porous media during combustion process, and the material failure mechanism, and the development of porous media burners. At present, the power density of the burner surface exceeds 4MW, the service life is more than 3,000 hours, the full power load of NOx emission is less than 30mg/Nm³ and the number of start-up and shutdown (thermal shock resistance) is more than 10,000 times.

（3）Research on Thermal Equipment with High Efficiency, Energy Saving And Low Nitrogen

We will carry out the design and development of commercial gas-fired boilers, vacuum hot water boilers, steam generators and other boilers based on porous media burners, green die-casting production lines, and industrial furnaces such as roller kilns, heat treatment furnaces and heating furnaces.

Focus on the design and development of porous-media-burner-based boilers (such as commercial gas-fired boilers, vacuum hot water boilers, and steam generators), green die-casting production lines, and industrial furnaces (such as roller kilns, heat treatment furnaces and heating furnaces).

 

Direction 2: Strengthening and Toughening of Metal-Matrix Ceramic Composites and Wear-Resistant Parts

1、 Introduction to Project

Through structural design, component control and ultra-high pressure composite molding process, the problems of poor wettability, low interface bonding strength and insufficient toughness in casting infiltration process are solved, and composite materials and wear-resistant parts of large-scale engineering equipment with high wear resistance and high toughness are developed, which are widely used in mining, cement, concrete, power generation and other industries. The abrasion resistance and the toughness of the material are greatly improved, the huge economic loss and the energy consumption caused by the abrasion of the metal material and the chromium ion pollution caused by the abrasion are effectively reduced, and meanwhile, the import pressure of the chromium ore in China at present is reduced.

2、Potential Market

At present, there are more than 3,000 thermal power plants of above 100MW in China, and the market scale of grinding rollers of coal mills exceeds 10 billion yuan; The national cement production capacity is 1.5 billion tons/year, and the raw material required is more than 5 billion tons/year, and the market scale of wear-resistant parts of cement vertical mills exceeds 30 billion yuan; The demand for machine-made sand in China exceeds 20 billion tons per year, and the market scale of wear-resistant parts for sand making machines exceeds 40 billion yuan.

3、Research Direction

（1）Research on High Chromium Cast Iron/ZTA Composites

With ceramic particles as reinforcement and metal as matrix, the ultra-high pressure composite molding process is used to solve the problems of poor wettability, low interface bonding strength and insufficient toughness in the traditional cast-infiltration process. The compressive strength of the material is not less than 650MPa, the impact toughness is not less than 12J/cm², and the wear resistance is more than 15 times of that of high-chromium cast iron and 1.5 times of that of the similar product Xwin® of Magotteaux Company in Belgium, an international benchmark enterprise.

（2） Research on Key Wear-Resistant Parts

With high chromium cast iron/ZTA composite material as the wear-resistant body, the design and development of key wear-resistant parts such as grinding roller of coal mill, liner and blade of sand making machine, grinding roller and grinding disc of vertical mill are carried out. At present, the service life of the developed grinding roller of the coal mill reaches more than 36 months, which is more than 3.5 times longer than that of the traditional high chromium cast iron grinding roller; The service life of the lining plate of the sand making machine is more than 30 days, which is more than 3 times longer than that of the mainstream high-chromium cast iron lining plate.

Transfer and Transformation of Achievements

1、Intellectual Property

49 invention patents and 96 utility model patents have been applied.

2、 Developed Products

The project of porous media combustion technology and thermal equipment has completed the design and development of 13 products in 6 series, including burner/machine, low nitrogen gas-fired boiler (commercial gas-fired boiler, vacuum hot water boiler), green die-casting production line (smelting furnace, holding furnace, baking package, mold preheater, heat treatment furnace, etc.), various industrial furnaces (roller kiln, metal heat treatment line, etc.), grinding roller of coal mill, and lining plate of sand making machine.

3、 Project Support

On March 25, 2020, this project was approved by Dongguan Major Scientific and Technological Achievements Transformation Team Project, with a total funding of 100 million yuan, which is the first major scientific and technological achievements transformation team project in Dongguan.

4、 Industrialization

Dongguan Academy of Advanced Ceramics and Composite Materials is established to be responsible for the transfer and transformation of achievements in related fields. Zhongke Zhuoyi Environmental Technology (Dongguan) Co., Ltd. and Zhongke Zhuoyi Composite Materials (Dongguan) Co., Ltd. are established to carry out the industrialization of low-nitrogen thermal equipment and key wear-resistant components.