Shanghai high-efficiency ultra-fine grinding equipment technical characteristics and working princip2019-09-02 11:08:37

Summary:Shanghai high-efficiency ultra-fine grinding is an indispensable part of the slag cement production process. Its high-efficiency ultrafine mill quality.

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Shanghai high-efficiency ultra-fine grinding equipment technical characteristics and working principle

Shanghai high-efficiency ultra-fine grinding is an indispensable part of the slag cement production process. Its high-efficiency ultrafine mill quality and equipment efficiency in Shanghai have a very important role in slag cement production. However, one of the important equipments in the production process of high-efficiency ultra-fine grinding cement, combined with its own complexity, is therefore particularly important for effective debugging of high-efficiency ultra-fine grinding. This paper has carried out corresponding research on the commissioning of high-efficiency ultra-fine grinding equipment of Shibang Industrial Technology Group, and the results can provide reference for practical engineering applications.

working principle

Before the mineral material enters the high-efficiency ultrafine mill, the metal material is first extracted to ensure the safe and stable operation of the equipment. The ore material is fed into the grinding disc through the feeding tube, and when the grinding disc rotates, the mineral materials are separately dispersed by the centrifugal force to form a material bed of a corresponding thickness. At the same time, the mineral material is crushed by a number of main grinding rolls on the grinding disc and pulverized. The pulverized material enters the separator along with the hot air, and at the same time, the material is dried by the hot air, and the moisture is quickly volatilized. After passing through the separator, the qualified powder enters the dust collector; and the large particles of powder are sent back to the grinding disc to continue rolling. This is repeated to complete the entire process.

Technical characteristics

Debugging of high-efficiency ultra-fine grinding equipment

The commissioning instruction manual contains methods, parameter settings and adjustments during the commissioning of high-efficiency ultra-fine grinding equipment. The details are as follows:

1 Fill the accumulator with a certain amount of gas to reach the specified pressure.

2 Inject dry oil into the bearing according to the corresponding regulations.

3 Inject appropriate oil into the hydraulic station, lubrication station and other equipment according to the corresponding design requirements.

1 Start the drag motor, hydraulic station and lubrication station and check that the steering is correct. As seen from the top down, the grinding wheel rotates clockwise, while the classifier rotates counterclockwise.

2 Adjust the distance between the grinding disc and the main roller. For example, the geometrical stroke of the main roller: the surface of the grinding disc as the reference surface, the high position is 265.00mm, and the low position is -5.00mm; the main roller working stroke: the grinding plate plane is the reference surface, the high position is 255.00mm, and the low position is 25.00mm.

3 Adjust the distance between the grinding disc and the auxiliary roller. For example, the auxiliary roller geometric stroke: the grinding plate plane is the reference surface, the high position is 216.00mm, and the low position is -42.00mm; the auxiliary roller working stroke: the grinding plate plane is the reference surface, the high position is 205.00mm, and the low position is 60.00mm; the auxiliary roller Installation position: the grinding plate plane is the reference surface, the distance is 116.00mm; the auxiliary roller low limit stroke: the grinding plate plane is the reference surface, the low position is 40.00mm; the auxiliary roller working limit stroke: the grinding plate plane is the reference surface, the high position is 210.00mm And the low position is 50.00mm.

4 Start the lubrication station. After continuous operation for 1h to 2h, control the flow, pressure and temperature according to its corresponding specifications or requirements. At the same time, control the start, stop and alarm, and check whether abnormal sound is generated during the operation. .

5 Start the main roller and the auxiliary roller hydraulic controller. Control flow, pressure, and temperature according to their respective specifications, as well as control start, stop, and alarm, and check for abnormal sound during operation.

The single machine debugging content mainly includes: one is the rotating belt; the second is the grinding belt; the third is the materializing valve; the fourth is the returning belt; the fifth is the lifting machine; the sixth is the iron remover; the seventh is the fan; the eighth is the dust collector. For the above equipment, each device should be able to operate separately through the central control system.

Linkage debugging refers to a kind of debugging that all the installation, control, chain and program of the system have been completed, and the single machine debugging also meets the corresponding requirements. When debugging linkage, pay attention to the difference between the boot sequence and the shutdown sequence.

Problems and handling during debugging

The main reasons for the instability of slag performance are as follows: The aspect is that the material layer is difficult to stabilize when the water content of the mineral material is low. Normally, this problem can be solved by adding a water spray device to the belt at the grinding inlet; the second aspect is that the rainy day affects the normal continuous operation of the ultrafine grinding. In general, the problem can be effectively solved by adding an awning; the third aspect is that the large-grained mineral material causes the ultra-fine grinding to generate large vibration. Usually, a filter can be added in front of the feeder to screen large-sized mineral materials, effectively preventing ultra-fine grinding vibration.

Poor lubrication of the main roller will cause oil in the shaft vent. Under normal circumstances, the following treatment methods can be used: one is to adjust the throttle valve; the second is to increase the exhaust port; the third is to check the pipeline seal; the fourth is to increase the temperature of the oil.

If the product is too small or too small, it will not meet the product quality requirements. Under normal circumstances, the following treatment methods can be used to meet the requirements of product fineness: one is to check the installation of the equipment; the second is to reduce the air volume; the third is to adjust the equipment parameters.

High-efficiency ultra-fine grinding is one of the important equipments in the production process of slag cement. Due to its good production capacity, low power consumption and strong adaptability to mineral materials, this equipment has been widely used in China's cement industry. Applications.

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