Energy-saving emission reduction is an eternal topic. With the proposal of carbon peaks and carbon neutrality, the energy consumption limit of new cement units is implemented by GB16780-2021. Enterprises below level 1 are more than 30%, and electricity prices are constantly increasing prices. Energy -saving and consumption reduction is a real cost -saving cost and improved efficiency.

At present, the power consumption of most of the cement grinding process of cement enterprises is between 26-32 degrees, and some old design and production lines are still above 34 degrees. The latest energy-saving cement grinding stations can be achieved by about 20 degrees. There is a lot of room for improvement. In addition to mixed with traditional measures such as mineral powder to increase production and strengthen system operations, the key power saving measures of cement  grinding processes (cement grinding stations) are summarized as follows:

1. From the selection of process equipment, the current power consumption is: the final grinding process of the roller presses <Vertical roller mill final grinding <Semi-finished grinding <Double closed circuit grinding <Closed circuit process of roller press+open circuit process of ball mill <Single closed circuit mill process <Single circuit grinding process; Cement Enterprise is transformed into an advanced powder grinding process method as much as possible. It needs to be based on its own characteristics and market acceptance. The amount of water in the craftsmanship is large, and the market. For example, the final powder grinding process and the semi -final powder grinding process of roller presses have a large amount of water. The market acceptance needs to be considered. The current mainstream process is still Double closed circuit grinding. Other processes are also improving.

2. Use a good roller press. At present, it is found that some enterprises are not maintained by the roller press prescription machine and did not achieve the corresponding effect. It is necessary to ensure that the roller presses can be done. The current of the roller press compressor cannot be checked on a regular basis. The roller press feeding device is transformed, the roller press is piled up welded or the nail roller is used to increase the squeezing effect, reduce the pressure of the ball mill, and increase the power consumption when the table is improved. There are currently two key points of the roller press: one feeding device, a fabric device to ensure the stability of feeding and ensure the squeezing effect; the second is that the hydraulic electrical control mechanism is running normally to ensure that the squeezing pressure meets the design requirements.

3. For articles inside the grinding machine, in addition to the conventional steel ball -level tone, pay attention to the situation of the barriers and grinding plates, and the activation ring. Through quantity; it is recommended to use the new ultra -thin lining plate to reduce the weight of the grinding machine and save power consumption. The theoretical calculation is that if the abrasive machine uses the ultra -thin lining plate and the new barriers, the tons of cement power can be reduced by more than 2 degrees. Using ceramic ball grinding body, currently the technique of ceramic ball grinding body has matured. In a well-equipped roller-pressing system, the use of ceramic balls in Erlang or Sancang can reduce the power consumption of 2-4 degrees. In actual production, after regular or resistance to increase, it manually clean up the seams, and insists on making a warehouse once a year, picking out crushed and rounding steel balls, and new adjustment adjustments.

4. Regular four powder analysis, analyze and judge the powder selection efficiency of V selection and powder selection machines, and find that abnormalities are processed in time to ensure the fineness and comparison area of the material of V selection of the grinding machine; The powder selection efficiency is checked regularly to check the two powder selection machines to clear the ash in the entrance of the high -efficiency powder selection machine. At the same time instrument.

5. The large -scale fan techniques such as circulating fan and tail ventilator are changed to energy -saving fans, and energy -saving speed regulating methods such as frequency frequency speed adjustment are implemented. Generally, the design of the production line equipment is large. The fan is not necessarily operating on the best performance curve. In addition, the previous fan efficiency itself is not high, resulting in the low overall operation efficiency. At present, the newly designed fan efficiency is high, which can reach 82-85%. New speed adjustment methods such as inverter speed regulation and magnetic speed regulation, rotor energy feedback speed regulation (new technologies are theoretically more energy -saving than high voltage frequency conversion, simple); new fan and energy -saving speed adjustment method can save a lot of electricity bills.

6. Use efficient energy -saving motors. There are many motors of the cement plant, and some cement plants have been built earlier. At that time, the motor technology was limited. It did not use high -efficiency energy -saving motors. In recent years, the development of motor technology has developed very rapidly. The previous energy -saving and efficient motor has now become ordinary motors. The permanent magnet motor is currently the most energy -saving motor. After the large motor is replaced with energy -saving motors, the energy saving effect is significant. In particular, it can be replaced directly to permanent magnet motor, such as powder selection motor, and can also cancel the reducer. From the three-level energy transmission of the motor-reducer-rotor equipment, it will be reduced to secondary transmission, improves the overall transmission efficiency, saves energy consumption, and at the same time Reduce the oil leakage point at the scene, clean and tidy on the scene.