Limestone powder is widely used in construction, agriculture, and chemicals. To make limestone rock into powder, a grinding process is required.
There are many industrial applications of quicklime, especially in the modern construction industry. The old quicklime production process can’t meet today’s need for high-quality lime. EPIC’s ultra-fine grinding mill meets the modern industry’s need for quality lime.
The ultra-fine grinding mill produces quicklime with a high fineness. It is generally 300-3000 mesh. The fine ore powder within this fineness is very active. Its uses now expand greatly. It can be used in coatings, plastics, rubber, and construction.
Uses of limestone powder
| Fineness | Limestone powder uses |
| Coarser than 200 mesh | Lightweight bricks, soil conditioners, etc. |
| 200 mesh-325 mesh | Desulfurization powder, cement, glass, chalk, etc. |
| 400 mesh-800 mesh | Rubber, plastic, sealing materials, chemicals, toothpaste, etc. |
| 1250 mesh-1500 mesh | Coatings, stationery, cables, cosmetics, medicine, etc. |
| 2000 mesh-3000 mesh | High-end papermaking, high-end PVC, high-end fillers, high-end silicone glue, etc. |
Composition of limestone grinding mill
The limestone grinding mill has a complete structure. It has a host, an analyzer (powder separator), a pipeline, a blower, a finished cyclone separator, a jaw crusher, a hoist, a feeder, and an electronic control motor.
Working principle of limestone grinding mill
The limestone grinding mill will crush the qualified materials. Next, the belt feeder will feed them evenly and non-stop into the main grinder for grinding.
The ground material is sent to the powder separator by the airflow of the fan for classification. The analyzer rejects any material that is too coarse. It falls into the grinding chamber for re-grinding. The qualified material enters the cyclone collector with the airflow through the pipe. Inside, it is separated and collected. The finished powder is then discharged through the device.
The return duct at the top of the cyclone powder collector lets in the separated airflow. It then enters the fan. The system runs under positive and negative pressure. It has an eco-friendly pulse dust collector.
2 notes on limestone grinding process
The top two goals of grinding limestone powder are to boost efficiency and cut dust.
The former is the principal factor for obtaining expected economic benefits. The latter is key to protecting the environment and sustainable development.
Ensure grinding efficiency
The grinder capacity is a very important factor that affects the profit. How to ensure the grinding efficiency of the grinder in the grinding process?
Control the spindle speed
If the power is low or the belt is worn, the spindle speed will drop. This will reduce the grinding speed.
So, during powder processing, check if the milling machine has enough power. If not, replace the worn transmission belt.
Check the wearing parts
Worn parts, like the blade and grinding ring, will lower the powder output rate. So, checking and replacing the worn parts is key to grinding efficiency.
Check the pipes
Being not well sealed, the air duct will be blocked, causing the increase of dust. As a result, the seal of grinder needs to be checked carefully before working.
Once the air duct is blocked, stop the operation and dredge the pipeline in time.
Reduce dust pollution
Dust pollution is a common, tough problem with powder grinding. It can be reduced by addressing the following aspects:
Aerosol dust removal at the grinder’s inlet is key to reducing dust pollution. Water must be controlled. If the material’s moisture is over 10%, the grinder will block.
Check the seals between parts of the grinding line. They must prevent dust leaks.
Choose a high-quality dust collector. Dust collectors directly affect the discharge of dust.
Conclusion
In conclusion, limestone powder grinding is vital in many industries. Choose the right grinding machine. Take precautions to ensure a smooth process. These steps will boost your grinding process and cut noise and dust.