Home > News >

Solutions For Of Rotary Kiln Failures In Operation

Cement Kiln Failure and Solutions

Wear of Tow Tile Seat Ball

During the operation of the rotary kiln, the ball seat is worn due to the breakage of the bearing bush. When this problem occurs, the traditional method cannot be effectively repaired on site. The replacement of new spare parts requires not only high cost, but also requires long downtime waiting for spare parts, which will cause significant damage to the enterprise. The polymer composite material has excellent adhesion, excellent compressive strength and other comprehensive properties, and can quickly repair the ball seat ball wear from the machining site. There is no influence of repair welding thermal stress, and the repair thickness is not limited. At the same time, the metal material of the product does not have the concessibility, absorbs the shock vibration of the equipment, and can make the mating surface 100% contact, thereby avoiding the possibility of re-wearing.

Turret Wheel Seat and its Spherical Crack

Rotary kiln support wheel seat ball or support wheel seat because of accidental cracks, because it is cast iron material, the traditional method can not be repaired. Polymer composites have superior adhesion, excellent overall mechanical properties, and good resistance to water, oil and chemical media. Repairing the ball body of the rotary kiln support wheel tile, saving a lot of downtime for the enterprise and creating huge economic value; and avoiding the scrapping replacement and optimizing the maintenance resources inside the enterprise.

Rotary kiln Ash Leak

The selection of the anchor is incorrect, resulting in a higher castable plane of the kiln tail chamber slope than the design. When the feeding amount is increased, the feeding tube is easily blocked, and the casting size of the lowering chamber plate is wrong, which causes the ventilation in the rotary kiln to be blocked, resulting in serious kiln ring after the knot, and frequent kiln tailing. Timely sealing the preheater, flap valve, pipeline and inspection door to reduce the impact of air leakage on the kiln operation and ensure that the temperature and pressure return to normal operation. Remove the castables and anchors from the kiln tail chamber ramp and the blanking chamber panel and re-weld the anchor and cast castable as required by the design.

Rotary Kiln "shooting" Phenomenon

When the ignition is performed, the temperature in the rotary kiln is low, and the coal is not burned well. When the coal powder falls to a certain extent, the combustion is fierce and the shooting phenomenon occurs. The method of prevention is to increase the ignition temperature as much as possible, reduce the amount of coal used, and shorten the ignition time. Excessive pulverized coal in the kiln before ignition, it is easy to appear after firing. The method of prevention is to reduce or not to pass hot air to the kiln before ignition, to reduce the slag of coal powder. If hot air is required, the fan can be opened, and the rotary kiln can be rotated at a low speed to discharge the coal powder outside the kiln.

Roller Axle bearing high temperature

The temperature rise of the rotary kiln support wheel bearing bush is an unexpected event, so it is necessary to make timely arrangements so that the best period will not be missed. Special tools for handling the temperature rise of the bearing bush should also be placed separately. The most common cause of temperature rise of the bearing bush is caused by poor circulating water, small amount of water or water leakage from the internal circulating water pipe. At the same time, due to the excessive wear of the wheel pad and the baffle, the unstable operation of the wheel belt is also the cause of the temperature rise of the bearing bush. In the face of the temperature rise of the supporting bearing bush, the following countermeasures should be taken: the circulating water is discharged, the cooling water volume is increased, and the contact surface between each gear wheel and the supporting wheel is strengthened to lubricate, and new lubricating oil is added; if the temperature of the whole supporting roller is high, Water can be added to the water tank under the roller to cool down; if the temperature at the shoulder or thrust ring is high, the hydraulic wheel can be changed.

Rotary Kiln Material Adhere to Ring

The loop is divided into a front loop and a clinker loop. The front ring is the ring that is knotted at the end of the rotary kiln firing zone, and the clinker ring is the ring between the firing zone and the exothermic reaction zone in the kiln, and is also the most harmful ring in the cement rotary kiln. . When the clinker enters the cooling zone, the high temperature clinker with liquid phase is covered on the lower temperature kiln skin, and it will bond quickly, and the thicker and thicker, forming the front ring. The clinker ring is in the process of calcining clinker, and the amount of liquid phase appears in the temperature range is too large, so that the mature material ring is formed. When the circle is far away from the lower feed port, it can not exhaust the air, and does not reduce the feed amount. Just pull out the coal injection pipe and burn it. When the kiln skin in the kiln grows long and thick or has a slight root, the coal injection pipe is pulled out slightly, the position of the combustion zone is moved, the temperature of the ring part is lowered, and the position of the coal ash is changed to make the thick kiln The skin gradually fell.