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The usage of GCC and Raymond grinding mill

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The usage of GCC and Raymond grinding mill


1.Calcium carbonate is one of the most commonly and widely used non-metallic minerals in the world. It is widely used in fields of paper making, plastics, rubbers, agriculture, foods, medicines, paintings, health care, and building materials. At present, the output of calcium carbonate in the world is more than 120 million ton. After years of rapid development, China has become one of major producers and consumers of calcium carbonate in the world, with an annual production and sales accounting for more than 30% of the total.

2. Raymond grinding mills made by Hongcheng can be used to process GCC because this kind of grinding mil with more stable performance, smoother operation and higher processing efficiency. It is a grinding mill for preparing excellent finished product. Consisting of a main unit, a forced turbine classifier, a pipeline device, a high pressure blower, a cyclone separator for the finished product, an electromagnetic vibrating feeder, a motor controlled by electricity, jaw crusher, bucket elevator, etc, this device works better due to more reliable operation, more stable performance and  finished product with higher quality.

3.New Raymond grinding mill manufactured by Guilin Hongcheng -HC  pendulum grinding mill

#HC  #HCMilling  #GuilinHongcheng

Maximum feeding size: 30mm

Diameter of grinding ring : 1000-1700mm

Machine power: 555-1732KW

Capacity: 3-90t/h

Finished product fineness: 0.038-0.18mm

Application range:

Based on the R-series grinding mills, this grinding mill with technological  innovation covers many technological patents. It is widely used in various areas of production and living, such as electric power, metallurgy, cement, chemical industry, building materials, paintings, paper making, rubbers, and medicines, foods, etc.

Performance advantages:

As a replacement device for the grinding mill traditionally used, this grinding mill is an economical and practical milling mill because of wide application, simple operation, easy maintenance, stable performance, and high price-performance ratio. As for the output, it is 30%-40% higher than the traditional Raymond grinding mill’s.

Applicable materials:

Featuring in high-yield and high-efficiency, it has a good effect on grinding non-metallic minerals with Mohs hardness below 7 and moisture below 6%, such as talc, calcite, calcium carbonate, dolomite, potash feldspar, bentonite, kaolin, graphite, carbon, fluorite, brucite, etc.




The daily inspection items of the milling machine:

1. Regularly listening to the normal operation sound of the mill and the classifier, and whether there is any abnormal sound.

2. Checking if the reducer and other equipment has any oil leakage, water leakage or material leakage?

3. Checking the wear of the tie rod seal every month.

4. Regularly check the function of the scraper and returning system.

5. Checking the pumping station every day, including: oil level of the fuel tank and refueling if necessary. The oil should be in accordance with the specified oil; check the pressure of each pressure gauge; check whether the filters are blocked.

6. Checking the oil return condition of the grinding roller lubrication station and whether the oil filling pressure is normal.

7. Always check the oil pipes and valves for oil leakage.

8. Measuring the wear of the grinding disc and the grinding roller liner each 1000H, and make a record.

9. Checking the pressure of the accumulator once a week.

10. Regularly check the center frame, nozzle ring, air guiding vane, water spray pipe and other grinding accessories.



Grinding Mill maintenance:

1. There should be a fixed person responsible for operation in using process, the operator must equipped with professional technical knowledge. Before the installation, the operator must carry out the necessary technical training to understand the principle performance of the mill and familiar with the operating procedures.

2. In order to keep the mill in good condition, the "safe operation system for equipment maintenance" should be established, and necessary maintenance tools as well as grease and corresponding accessories should be provided.


3. After using the grinding machine for a period of time, it should be repaired and maintained. Meanwhile, the wearing parts such as grinding rolls, grinding rings and blades should be repaired and replaced. The grinding roller device should be carefully check the connection bolt nut before use and after, see if there is looseness, whether the grease is sufficient. The refueling tools are available with manual refueling pumps and grease guns.


4. The grinding roller device of the mill needs to be replaced after using for more than 500 hours. When the grinding rolls are replaced, the rolling bearings in the sleeve must be cleaned.


5. According to the size of the material, soft and hard, water content, specific gravity, the processing thickness is also different. The analyzer of the mill, high speed, high fineness, low speed and low fineness can be adjusted. Increase the fineness and the output will be reduced accordingly. If the requirements are not met, the fan speed should be debugged and the user can flexibly master it.


6. The scrapping limit of the grinding roller ring of the mill, the remaining minimum wall thickness shall not be less than 10mm.


7. The feed should be stopped when the mill stops, and the main machine continues to grind. The motor of the main unit and the motor of the analyzer can be turned off to stop the grinding work after about one minute. After that, the blower motor is stopped to purge the remaining powder.

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