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An Efficient Solution for Fly Ash Drying
An Efficient Solution for Fly Ash Drying
15 July 2025
In the context of increasingly stringent environmental protection requirements, fly ash treatment has become a focus of attention in many industries. Fly ash, as a solid waste after coal combustion, not only has a large emission volume but is also one of the main components contributing to smog formation. However, through proper treatment, fly ash can be recycled and utilized in numerous fields, turning waste into treasure. Among them, fly ash drying is a crucial link, and the dryer from TIC TECHNOLOGY CO., LTD. has demonstrated excellent performance in this field.
TIC TECHNOLOGY CO., LTD. is affiliated with TDG HOLDING (stock code: 600330) and is a national high-tech enterprise specializing in material treatment and disposal equipment as well as system integration technology. Adhering to the concept of "jointly promoting global ecological civilization construction and deeply participating in global environmental governance", the company has made remarkable achievements in the environmental protection field, especially in the sludge treatment and disposal industry, where it is a leader and one of the standard-setters in the industry. In terms of fly ash drying, the drying equipment it has launched also performs outstandingly.
Based on the development needs of material reduction, harmlessness, stabilization, and resource disposal, the company has introduced Mitsubishi's core equipment manufacturing technology and system integration technology for material drying treatment and disposal. Combined with material characteristics, it has developed two series (SDK and FDK) of more than ten specifications of disc dryers, which are suitable for fly ash drying. Taking the FDK series disc dryer as an example, its working principle is scientific and efficient. Fly ash enters the dryer through the feed inlet, and the working medium flows between the shell and the hollow shaft, transferring heat through the jacket, hollow shaft, and hollow discs welded on the shaft to indirectly heat and dry the fly ash. The generated water vapor accumulates in the dome of the dryer and is carried out by the carrier gas.
This type of dryer has significant advantages. In terms of energy utilization and environmental protection, it uses steam as the heat transfer medium, resulting in a simple system and fewer auxiliary equipment. The setting of the carrier gas supply port makes the exhaust emission smoother, requiring less auxiliary air, and the scale of the exhaust gas treatment equipment is small. At the same time, steam does not come into contact with the material, so the amount of insoluble gas in the exhaust gas is small, which can be incinerated in the furnace, greatly reducing the risk of secondary pollution. During operation, the oxygen content, temperature, and dust concentration in the equipment are low, ensuring high safety. In terms of equipment performance, the horizontal disc structure transfers heat through multiple surfaces of the shell wall, hollow shaft, and discs, with a large heat transfer area, compact structure, and small overall dimensions. After being crushed and stirred, the fly ash becomes uniform particles, which is beneficial for subsequent disposal. The equipment uses steam as heat source for heating, so even if it stops, the material on the discs will not overheat. Moreover, the equipment has a large material processing load and good adaptability to uneven feed, ensuring stable operation. The internal operation resistance is small, significantly reducing power consumption. It has high reliability, low maintenance requirements, and good continuous operation capability, able to operate day and night, ensuring 8000 hours of operation per year. In case of a sudden power outage due to an accident, it can also be started urgently with a load, with stable operation, a solid structure, and durability. It has strong adaptability to fly ash with different moisture contents and complex sources, and can properly handle mixed impurities such as bricks, stones, and textiles.
Fly ash drying is of great significance. After drying treatment, fly ash can be widely used in many fields. In the construction industry, it can be used as an admixture for cement, mortar, and concrete, becoming a component of cement and concrete, effectively improving the quality and workability of concrete. It can also be used in the production of cement clinker, sintered bricks, aerated concrete, and other building materials. In the agricultural field, it can be used as a soil conditioner, having a positive impact on crop yields. It also plays an important role in other manufacturing industries such as ceramic and glass production. Fly ash drying not only solves the pollution problem but also realizes the comprehensive utilization of solid waste, which is in line with the concept of sustainable development.
The dryer from TIC TECHNOLOGY CO., LTD. provides a reliable and efficient solution for fly ash drying, helping various industries achieve the harmless treatment and resource utilization of fly ash. It plays an important role in promoting the development of environmental protection undertakings and practicing the concept of green development, contributing to the construction of a beautiful China.