Introduction
Today’s modern alabaster industry produces products based on alabaster binding materials. Such products are obtained by burning natural material at low temperatures to obtain hemihydrate of calcium sulfate. It is worth noting that fired and non-fired alabaster binders are rarely used in this process. This is due to the fact that such binders need to be grinded for long periods of time (non-fired binders) and consume large amounts energy (fired finders).
GlоbeCоre’s recent technological advances has made it possible to start applying non-fired binding material again by accelerating the technological processes.
Main body
The technical department of GlobeCore has proved that the quality of non-fired anhydrite binders may be improved when using the AVS-100 Vortex layer machine (Magnetic Mill).
The AVS-100 Vortex Layer machine grinds down anhydrite stone by exposing it to ferromagnetic particles. A great importance is placed on the duration of the ferromagnetic particle exposure. The performance characteristics of the anhydrite binder depends on the time it is being grinded in the AVS Vortex Layer machine.
Table 1
The impact of the grinding duration on performance characteristics of anhydrite stone
|
The grinding duration, s |
Sieve residues, %, No |
Passed through the sieve, % |
Specific surface area, cm2/g |
|
|
02 |
008 |
|||
|
30 |
18.1 |
12.7 |
69.2 |
2615 |
|
60 |
11.2 |
4.0 |
84.8 |
3700 |
|
90 |
2.7 |
3.7 |
93.6 |
3955 |
|
120 |
1.5 |
3.2 |
95.3 |
4545 |
|
150 |
1.2 |
2.3 |
96.5 |
5150 |
|
180 |
0.9 |
2.4 |
96.7 |
5600 |
|
210 |
0.8 |
2.0 |
97.2 |
6085 |
As the table shows, the specific surface area of the product is increased with the increase of the grinding duration (from 2615 to 6085 cm 2 /g ). In ball mills, the material needs to be grinded down for between five and eight (5-8) hours to obtain the desired analogues fineness.
Conclusion
The production of the non-fired binders has become capable due to the GlobeCore technologies since the raw material is grinded down being exposed to ferromagnetic particles. Additionally, the advanced GlobeCore technologies allow for the reduction in energy consumption and operating costs due to the reduced processing time.
Non-fired anhydrite binder, produced by GlobeCore branded equipment, may be applied in such areas as:
- masonry mortar production;
- artificial marble production;
- seamless poured flooring; and
- mixed anhydrite binders production.
Accelerate your technological processes with the help of the GlоbeCоre equipment!