What is the process of converting fly ash into building material ingredients?

The secondary utilization of fly ash has become a key topic concerned by the government in recent years. Among them, the secondary utilization of fly ash in construction, building materials and other fields has attracted much attention from all walks of life.

Fly ash is mainly composed of SiO2, Al2O3, FeO, Fe2O3, Cao, TiO2, etc. It mainly comes from the fine ash in the flue gas after coal combustion and the solid waste discharged from coal-fired power plants.

The fly ash can be reused in building materials industry mainly because of the performance of fly ash with hydrogel, which can react with alkaline earth hydroxide at room temperature, especially under the condition of hydrothermal treatment (steam curing), and become a material for increasing strength and durability.

The main input of secondary utilization of fly ash is fly ash grinding mill equipment, and the commonly used processing equipment is GKH ultra-fine ring roller mill. It can effectively use the characteristics of fly ash for grinding, and the grinding roller installed on the rotary table in the main body cavity of GKH fly ash ultra-fine mill rotates around the central axis. There is a large movable gap between the grinding roller and the grinding roller pin. Under the action of centrifugal force, the grinding roller swings horizontally outward, so that the grinding roller presses the grinding ring, and the grinding roller rotates around the grinding roller pin at the same time. Through the gap between the grinding roller and the grinding ring, the materials can be crushed and grinded due to the rolling of the grinding roller, which can effectively grind the materials without failure to form a material layer and low grinding efficiency.

Fly ash reuse grinding mill—-GKH ultrafine ring roller mill has many advantages：

·Large crushing ratio and high energy utilization rate: the non-metallic ore granular material with feed particle size less than 10mm can be processed to less than 10 at one timeμM fine powder (under the standard of 97% passing rate), it has the advantages of low consumption of powder produced by high-speed impact crusher, and has the product fineness close to air mill.

·Fineness adjustable: the forced turbine classification system has uniform and fine particle size, which can easily adjust the fineness of finished products between 0.04mm (400 mesh) – 0.005mm (2500 mesh).

·High dust collection rate and more environmental protection: the full pulse dust collection system is adopted for dust collection, with an efficiency of more than 99.9%, effectively ensuring dust-free operation in the workshop.

·Small wear, shock absorption and compact structure: the grinding wheel and ring are made of special wear-resistant steel, which improves the service life. The main engine base adopts the integral casting structure, which not only ensures the structural strength, but also has good shock absorption performance.

The secondary utilization of fly ash can bring benefits

Main engine input: secondary utilization of fly ash – GKH fly ash ultra-fine ring roller mill

Profit accounting: in terms of cost, the cost of raw materials is basically zero. Fly ash itself is a kind of waste without place. Some power plants want to give it to you for nothing. Only one set of pulverizing equipment needs to be purchased for processing fly ash. This second utilization of fly ash – GKH ultra-fine ring roller pulverizer is the total investment for the construction of the plant.

Secondly, in terms of income, fly ash can be used as building materials after processing, which can be used to produce substitutes for concrete and cement raw materials, and the income of processing a ton of fly ash such as bricks, tiles and blocks is not low. In addition to labor, water and electricity, machinery maintenance fees, taxes and other miscellaneous fees, the net profit of processing a ton of fly ash is also very considerable!