News detail
Development of monolithic refractory materials
Monolithic refractory materials, also known as bulk refractory materials, are a new type of refractory materials made of aggregates, fine powders, binders and admixtures in a certain proportion. It can be used directly without firing and has a variety of excellent properties. The following is a detailed analysis of the development history and future development trends of monolithic refractory materials:
I. Development history
The development history of monolithic refractory materials can be roughly divided into the following stages:
1. Initial stage (1914 to mid-1960s):
In 1914, plastic aggregates appeared in the United States, marking the birth of monolithic refractory materials.
Subsequently, binders such as silicate cement, aluminate cement, water glass and phosphate began to be used, and were mixed with ordinary refractory aggregates and powders to form monolithic refractory materials.
2. Development stage (1960s to late 1970s):
During this period, new binders such as aluminum sulfate, polyaluminum chloride, sodium phosphate, sintered and fused alumina cement, clay, etc. were developed to improve the high-temperature performance of amorphous materials.
- Modernization stage (early 1980s to present):
The use of composite binders, ultrafine powders and high-efficiency admixtures has enabled the successful preparation of low-cement, ultra-low-cement and cement-free castables, and their performance has been significantly improved.
With the continuous advancement of technology, the types and application scope of amorphous refractory materials are also expanding.
2. Future development trends
1. Material development direction:
Previous amorphous refractory products mainly used neutral and acidic oxides and other materials, but they can no longer meet the higher requirements of metallurgical processes.
At present, amorphous refractory materials based on alkaline oxide materials and oxide and non-oxide composite materials have become a development trend. These materials have higher heat resistance and corrosion resistance, and can better meet the needs of modern metallurgical processes.
2. Development direction of bonding methods:
The bonding methods of amorphous refractories have gone through a development process from water bonding, chemical bonding, water bonding + condensation bonding, to polymerization bonding.
In the future, the bonding methods of amorphous refractories will continue to develop in the direction of condensation and aggregation, and follow the development route of high impurities-low impurities-no impurities. The purity of the binder will become higher and higher to improve the structural strength and performance of amorphous refractories.
3. Enrichment of material types:
At present, the amorphous refractories on the market mainly include alumina, silicon carbide, silicon oxide, etc. In the future, different types of amorphous refractories on the market will gradually become richer, such as silicon nitride, zirconium oxide, carbon, etc. These new materials have better performance at high temperatures and will have unique application advantages in specific fields.
4. Improvement of performance indicators:
As people’s requirements for the performance of refractory materials increase, the performance indicators of amorphous refractories will also be further improved. For example, high strength, low thermal expansion coefficient, corrosion resistance, wear resistance and other properties will be further enhanced to meet the high requirements of modern industry for refractory materials.
5. Extensive application fields:
Amorphous refractory materials are widely used in industries such as steel, electricity, cement, metallurgy and chemical industry. In the future, its application scope will be further expanded, and new fields and new application scenarios are constantly emerging. For example, the automotive industry, aerospace, new energy and other industries will also become new application fields for amorphous refractory materials.
In summary, amorphous refractory materials have broad development prospects. With the continuous advancement and improvement of technology, new amorphous refractory materials will continue to emerge and promote the deepening development of the entire refractory industry.
Send inquiry
Please Leave your message you want to know! We will respond to your inquiry within 24 hours!