Fly ash is a common industrial waste, and its utilization technology has been widely studied and applied in recent years. With the continuous progress of science and technology, the utilization technology of fly ash is also developing and innovating. Here are some of the latest developments in fly ash utilization:
1. High-value utilization technology.
Fly ash extracts alumina.
Fly ash is rich in alumina resources, and high value-added products can be obtained by extracting alumina. In recent years, some new extraction technologies such as soda lime sintering, limestone sintering and acid leaching have been continuously studied and applied. These technologies are able to extract high-purity alumina from fly ash with low cost and high resource utilization.
Fly ash is prepared for molecular sieves.
Elements such as silicon and aluminum in fly ash can be used to prepare molecular sieve materials. Molecular sieve is a crystalline material with regular pore size, which has a wide range of applications in the fields of adsorption, separation, and catalysis. The use of fly ash to prepare molecular sieves can give full play to the resource advantages of fly ash and improve its added value.
2. Environment-friendly utilization technology.
Fly ash ecological restoration technology.
The accumulation of fly ash will have a certain impact on the surrounding environment and ecosystem. In order to reduce the negative impact of fly ash on the environment, some ecological restoration technologies are applied to the treatment and utilization of fly ash. For example, fly ash is used to improve the soil, restore the ecology of the mining area, etc. These technologies can reduce the environmental risks of fly ash while improving soil quality and the ecological environment.
Green technology of fly ash concrete.
Traditional concrete production requires large quantities of natural sand and gravel aggregates, which puts a lot of pressure on natural resources. The use of fly ash instead of part of the natural aggregate to prepare concrete can reduce production costs and reduce dependence on natural resources. In addition, by adding green additives and using recycled aggregates, the environmental performance and sustainability of concrete can be further improved.
3. Multi-industry integration and utilization technology.
Fly ash extracts useful elements to prepare functional materials.
Fly ash is rich in silicon, aluminum, iron and other elements, which can be used to prepare various functional materials, such as silicone rubber, ceramics, glass, etc. Through high-temperature melting, chemical purification and other technical means, the useful elements in fly ash can be extracted and high value-added functional materials can be prepared. This multi-industry integration can realize the efficient recycling of resources and promote industrial upgrading and transformation.
Fly ash agricultural utilization technology.
Fly ash contains a large number of minerals and trace elements, which can be used as fertilizer and soil amendment. In agricultural production, composting fly ash mixed with raw materials such as organic waste can make highly effective biofertilizers. This fertilizer has the advantages of improving soil structure, improving soil fertility, and increasing crop yields. At the same time, the use of fly ash in saline-alkali land improvement and soil pollution control has also achieved good results.
Fourth, high value-added product development technology.
Fly ash activated carbon preparation technology.
Fly ash activated carbon is a high value-added product with a wide range of application prospects. Through certain activation treatment, fly ash can be prepared into activated carbon materials with high specific surface area and high adsorption performance. This kind of activated carbon has a wide range of application value in environmental protection, chemical industry and other fields, such as water treatment, air purification, etc.
Development of new building materials for fly ash.
Fly ash can be used to develop a variety of new building materials, such as insulation materials, decorative materials, etc. These products have the characteristics of environmental protection, energy saving, light weight and high strength, which can meet the needs of modern buildings for energy conservation and emission reduction. Through the continuous research and application of new technologies, the application scope and value of fly ash in the construction industry can be further expanded.
To sum up, the utilization technology of fly ash has made remarkable progress and innovation in recent years. With the continuous progress of science and technology and the improvement of environmental awareness, it is believed that the utilization technology of fly ash will be more diversified, efficient and environmentally friendly in the future. Through multi-industry integration, high value-added product development and other ways, the efficient recycling of fly ash resources can be realized, and the sustainable development of economy and society can be promoted.