Centrifugal fan wear proof measures in cement plant by Xianrun Blower

2. Control operating point reasonably

The change of the fan operation condition has a great influence for gas-solid two-phase flow inside the impeller. 

Centrifugal fan in cement plant by xianrun blower

When airflow deviates from the designing flow of the fan, the particle trajectory in the centrifugal fan will change, and the impact position of dust particles on the plate cover and blades will move move back and forth, so that wear changes accordingly.

In general, when the actual flow skews to small airflow, it benefits to decrease the impeller wear. When the deviation is serious for the design point, it will increase the fan wear. Therefore, it needs to optimize and control the operating point reasonably.

high pressure centrifugal fan in cement plant by xianrun blower 

For the general centrifugal fan, when the minimum flow is equal to 80% of design flow rate, it benefits to decrease fan wear.

centrifugal fan in cement plant

Wear resistance measures of sintering fan----by xianrun blower

Sintering draught fan is the main suction machine of sintering machine, takes on 50% total power consumption in sintering plant. And the dust content of ore sintering flue gas is big. In this case, improving efficiency, reducing energy consumption, strengthening the wear-resisting, prolonging service life are main technological skills for sintering fan. 

Sintering draught fan by xianrun blower

Wear resistance measures of sintering fan

(1) Zigzag central disk can not only improve the outlet air distribution, but also avoid scour of flue gas to the central disk;
(2) Replaceable wearing plate mounted on the blade;
(3) Replaceable cone plate protect the central disk from the wear and tear;
(4) The casing is equipped with scroll plate and side plate;
(5) Impeller is coated with ceramic wear, resin, quartz powder with water glass and so on;
(6) Impeller surface is treated with strengthening processing, such as the surface welding, thermal spraying, boriding, laser surface hardening and high frequency quenching, etc.

Wear resistance measures of sintering fan by xianrun blower