Efficacy of cement grinding aid
1. Improve the cement grinding process, improve the grinding efficiency, and reduce the production cost of cement by reducing the power consumption of cement unit grinding.
2. Improve cement quality, improve cement particle gradation, and reduce production costs by saving cement clinker.
3. Improve the applicability of cement and concrete admixtures.
Improve cement grinding process
Grinding aids can solve the process problems such as ball wrapping, grinding, blockage of conveying pipes and agglomeration of cement storage tanks during the operation of the mill:
1. Prevent and eliminate process problems such as blocking materials, grinding, and agglomeration in the cement warehouse.
2. Improve the fluidity of logistics, make cement easy to transport, and reduce the power consumption, wear and maintenance of transportation equipment.
Increase the output of cement mill
This type of grinding aid has high surface activity, which can significantly reduce electrostatic adsorption in the grinding and prevent fine particles from agglomerating. Obviously improve the flow rate of materials in the mill, increase the output of the mill, and solve process problems such as ball wrapping, paste milling, and poor ventilation in the mill.
The economic benefit can be calculated as follows: V=C x ax A-B x D
V-electricity saving cost per ton of cement (yuan/ton of cement) C-electricity consumption per ton of cement grinding without using grinding aid (Kwh/ton)
a——The increase of using grinding aid (%) A——Electricity price (Yuan/Kwh)
B——Amount of grinding aid (%) D——Unit price of grinding aid (yuan/ton)
V=Cx a x A-B x D = 30 x 15% x 0.45-0.020 x 7350=0.34 (Yuan/ton cement)
According to calculations, the use of production-increasing grinding aids to increase production at 10% can achieve a balance between input and output, and 12% will be effective.
Saving cement clinker
With the update of cement grinding technology, the output of cement mills has increased significantly. The economic benefits of using grinding aids to increase the output of cement mills are very limited, while the economic benefits of using grinding aids to save cement clinker are very significant. Most of the enhanced and clinker-saving cement grinding aids also have the effect of increasing the output of cement mills, improving the grinding process of cement, and improving the quality of cement.
The economic benefit of saving cement clinker is calculated as follows: V=(S-W) x K-B x D
V——Economic benefit of ton cement (Yuan/ton cement) S——Clinker price (Yuan/ton)
W-price of mixed materials (yuan/ton) K-percentage of clinker savings (%)
B——Amount of grinding aid (%) D——Unit price of grinding aid (yuan/ton)