News Date:2016-12-12
What is fly ash?
Fly ash, coal from the combustion of flue gas collected in the fine ash, fly ash is the main solid waste discharged from coal-fired power plants. China's thermal power plant fly ash main oxide composition: SiO2, Al2O3, FeO, Fe2O3, CaO, TiO2 and so on. With the development of power industry, coal-fired power plant emissions of fly ash increased year by year, China's current displacement of one of the larger industrial waste. A large number of fly ash without treatment, will produce dust, polluting the atmosphere; if discharged into the water system will cause the river blockage, and one of the toxic chemicals will cause harm to human and biological.
The use of fly ash
Cement and concrete can be used in large quantities with fly ash, therefore, its application has been the focus of China's cement industry. Fly ash or coarse ash through the tube mill high fine grinding (high fine grinding) to a certain fineness, made of fly ash admixture mixed with concrete, not only can replace some of the cement, coal, electricity, limestone And reduce the cost of concrete, protect the environment, but also can improve the late strength of concrete, improve the workability of fresh concrete, improve the durability of concrete, the production of high-performance cement. Therefore, the high-fine fly ash as a comprehensive role of fly ash through a good way, is bound to be more and more attention to the relevant enterprises.
Why do not choose tube mill to grinding fly ash ?
Fly ash tube mill efficiency is generally low can not become efficient grinding
1: the material flow velocity is too fast. In order to control the flow rate of fly ash to achieve a reasonable ratio of material and a certain grinding time, can be used in the fly ash mill mill to slow down the flow of material within the technical device.
2: Severe over-grinding. To reduce the fly ash over grinding the key: First, the grinding body grading should be appropriate to avoid the fly ash in a large number of glass beads excessive crushing. The second is to take effective technical measures, and timely discharge of grinding qualified powder.
3: The technical parameters unreasonable, long before and after the warehouse than unreasonable, more than coarse grinding capacity and lack of fine grinding capacity
Chaeng(Great Wall Machinery) Fly Ash Vertical Mill
Product advantages:
1, fly ash vertical mill capacity, low energy consumption, green.
2, roll sets can be turned over to use, both conducive to improving the production of fly ash, but also reduce wear and prolong its service life.
3, the installation of explosion-proof devices, to ensure safe production. On the shell with explosion-proof valve to prevent the explosion of coal in the mill to ensure the safe use of equipment.
Structural features:
1, fly ash Vertical mill with a disk-shaped disc and the tire-shaped roller sets, more suitable for coal grinding.
2, roller bearings without special sealing. Roller device uses a pair of spherical roller bearings, bearing seal cavity extends to the case, not with dust-laden gas contact, so long as a simple seal can make roller bearings do not enter the dust, do not need sealed fan.
3, vertical mill transmission part, do not need auxiliary transmission device.
4, slagging part of the simple. Slagging port with a cover, do not need to install slag discharge valve.
| China professional lime rotary kiln manufacturer | 200 TPD-1500 TPD Small to Medium Size Cement production Plants project | Return column |
