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Raymond Grinding Mill for Travertine Powder Making

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Raymond Grinding Mill for Travertine Powder Making 


Travertine is a kind of porous rock whose powders can be ground and prepared by grinding mill. As a deposit of calcium carbonate, travertine is mainly applied in the decoration of the exterior wall of the building, the interior floor and the wall. Travertine is mostly cream-coloured, which gives people a sense of gentleness. It is used by many architects around the world due to its rich texture and clear stripes.

Advantages :

① It is a kind of building stone with wide application due to uniform lithology, soft texture, low hardness, easiness of being mined and processed, light specific gravity (density) and easiness of transport;

② It is an excellent material for building decoration and can be used for deep processing for it is not only easy to process, but it can also insulate sound and heat.

③ It is used as engraving materials and shaped materials due to high adaptability to process, small hardness, and easiness of engraving.

④ It has good decorative properties because it is rich in color, unique in texture, and with a special structure of hole. At the same time, it is also a kind of good material for garden stones such as bonsai, rockery etc., due to characteristics such as natural hole and beautiful texture.

As the application scope of travertine is wider, the demand for travertine is increasing. Presently, HCQ Reinforced Grinding Mill manufactured by Guilin Hongcheng is optimal for the processing of travertine. This is a new grinding mill which is technically updated, which is suitable for grinding all kinds of non-flammable and non-explosive materials with Mohs hardness below 7 and humidity below 6%.

Advantages and features:

① Maintenance-free grinding roller assembly and new structure of spider-arm  are adopted. The reliability of running is higher and maintenance is convenient.

② The design is advanced and reasonable, because the grinding ring can be replaced without dismantlement.

③ High yield: This model is upgraded on the basis of the R-type grinding mill. Consequently, the configuration is more reasonable and the capacity is higher.

④ High accuracy of classifying: Turbine classifier with large blade is adopted, and the fineness of finished product can be adjusted freely between 80 mesh and 400 mesh.

⑤ Large capacity of conveying : High-pressure centrifugal fan is adopted. Air volume and wind pressure are increased, which greatly improves the capacity of pneumatic conveying.

⑥ The lifting shovel can lift a big amount of materials: Materials are fed into the place between grinding roller and the grinding ring at the maximum rate by the new and super-large blade. 


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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