Home / News
Limestone superfine grinding machine facilitates limestone usage in concrete2018-08-03 17:03:29
Limestone is a sedimentary rock composed of calcium carbonate. According to the content of calcium carbonate, limestone can be divided into many kinds. Limestone with more than 95% calcium carbonate is called high calcium limestone. When the calcium carbonate content of limestone is between 80% and 90%, and the content of magnesium carbonate is between 5% and 15%, the limestone is called the magnesia limestone. Dolomite is limestone with 50%-80% calcium carbonate content.
The continuous development of the construction industry has increased the consumption of concrete. As one of the basic components of concrete, cement has a great adverse effect on the green development of concrete because of its high energy consumption and high emission in the process of production. In order to further reduce the cost of cement production and make it more environmentally friendly, the use of limestone powder is essential.
Strength is one of the most important criteria for measuring the quality of concrete. Limestone powder has great influence on the strength property. These effects are mainly manifested by three main effects-accelerated hydration, activity and particle morphology. The morphological effect in the particle morphology effect will affect the fluidity and water retention of the concrete mixture, and the filling effect will affect the bulk density of the powder material. The accelerated hydration effect of limestone powder is determined by its particle size. The more fine particles are, the more obvious the accelerated hydration effect will be.
There are mainly three ways to apply limestone powder to concrete. The first is that limestone powder replaces part of fine aggregate; the second is limestone powder admixture; the last is that limestone replaces part of cement.
Limestone superfine grinding machine is one of the most popular ore grinding machines in recent years.
|
Unit: KW
|
HGM80
|
HGM90
|
HGM100
|
HGM125
|
HGM1680
|
|
Main Unit
|
55-75
|
2*45
|
132
|
185-200
|
315
|
|
Classifier
|
18.5
|
18.5
|
30
|
37-4*15
|
5*18.5
|
|
Blower
|
45
|
55
|
75
|
2*45-2*55
|
2*75-2*90
|
|
Crusher
|
18.5
|
18.5
|
18.5
|
45
|
45
|
|
Bucket Elevator
|
3
|
3
|
4
|
4
|
7.5
|
|
Feeder
|
2.2
|
2.2
|
2.2
|
3
|
3
|
|
Discharging Valve
|
2*0.75
|
1*0.75-1*1.1
|
2*1.1
|
2*1.1
|
2*0.75-2*1.5
|
|
Air Compressor
|
11
|
15
|
22
|
2*15-37
|
55
|
The capacity of this machine is as twice much as jet mill, mixing grinder and ball mill. The service life of the quick-wear parts of this machine is also a main focus. The good news is that the working life of the grinding roll and ring is three times longer than some crusher mills. Compared with Raymond mill, the fineness of the output powder which is grinded by this equipment can be adjusted between 200 mesh and 2500 mesh.