Cement industry
Cement Plant
In the cement production process, there are many dust sources, such as crushers, mills, high-efficiency powder separators, conveyors, silos, silo tops, silo bottoms and packaging systems, dryers, drying mills, coal mills and coolers , vertical kiln, rotary kiln and kiln-mill integrated machine all produce a large amount of dust and smoke, and the pollution to the environment is also quite serious, becoming the main dust emission industry in my country.
A large number of bag filters are used in the cement industry, which are not only environmental protection equipment, but also production equipment. Therefore, according to the characteristics of dust conditions, the correct selection and use of filter materials is particularly important. Including filter bag consumption and operating power consumption play a decisive role. In the cement industry, the following three types of filter materials are generally selected according to different working conditions and environments:
High temperature filter material: kiln head and kiln tail ,dryer
Anti-static filter material: coal mill
Normal temperature filter material: silo, packing station, cement mill and other environmental dust removal
| Production processes | Filter material selection | working condition | Post-processing |
| Raw material grinding | polyester | The inlet temperature of the dust collector is 70-100℃, the moisture content is 10% (dew point temperature is 45℃) | Singeing, calendering, heat setting, water repellent and oil repellent treatment |
| Dryer | Aramid + glass fiber composite | Dust collector inlet temperature 160-200℃, moisture 20% (dew point temperature 60℃) non-corrosive gas | PTFE impregnated |
| Pulverized coal grinding | polyester | High abrasive dust concentration, high humidity, explosive | PTFE impregnation, coating, film covering |
| Beginning of the kiln | P84 | High temperature, high humidity and high concentration of flue gas | PTFE impregnation coating |
| Glass fiber bulk yarn coating | film coated | ||
| P84+Aramid | Singing, calendering, PTFE impregnation | ||
| End of the kiln | Aramid | High temperature, high humidity and high concentration of flue gas | Graphite, PTFE impregnation |
| Cement grinding | Polyester film coated filter material | The inlet temperature of dust collector is 70-90℃, and the inlet dust concentration is high | Singing, calendering, heat setting, PTFE coating |
| environmental dust removal |
Aramid | The dust is fine, high concentration, low temperature and large smoke volume | Smooth, water repellent and oil repellent |
| For reference only, according to the specific working conditions and customer needs to provide choice! | |||