Product Center
Today News
Limestone mill for desulfurization
Date:2021-09-01 17:25:50 From: Click:Power plants choose limestone as the desulfurization curing agent based on the fact that limestone has a wide range of sources, low price, and high desulfurization efficiency.
Limestone powder for desulfurization requires a particle size of 250 mesh or 325 mesh (45 μm), of which 325 mesh limestone powder has a better desulfurization effect.
Limestone pulverizing equipment for desulfurization
The equipment used in the limestone pulverizing system for desulfurization is: crusher, hoist, electromagnetic vibrating feeder, and grinding mill.
The powder grinding mill with a powder separator inside does not need an external powder separator, which can make the process simpler.
Limestone powder processing flow for desulfurization
After the large limestone is crushed to the required size by the jaw crusher, it is sent to the storage hopper by the elevator, and then the vibrating feeder sends it uniformly and quantitatively to the main grinding chamber of the European mill for grinding. The ground limestone powder is blown up by the wind, and is classified by the classifier.
The limestone powder conforming to the fineness enters the new isolated cyclone powder collector with the airflow through the pipeline for separation and collection. The collected limestone powder products are sent to the stone powder bin by the conveying device through the discharge port for desulfurization.
After being separated by the separator, the unqualified particles are thrown to the wall of the cylinder, fall along the simple wall, and then return to the mill for grinding. The entire system runs under negative pressure, and the system dust does not overflow to ensure the cleanliness of the site.
Because the limestone entering the mill sometimes has a certain water content, the heat generated during grinding will turn it into water vapor, which increases the total amount of gas in the system.
At the same time, the total amount of gas in the system will increase due to the pipe joints or the air entering the system with limestone. The frictional heat during grinding also heats up the gas and expands its volume.
At this time, in order to maintain the negative pressure operation state of the system, the valve between the fan and the host can be opened to automatically introduce the excess gas into the pulse bag filter and be filtered out to ensure environmental protection.
3 kinds of grinding mill used for limestone powder for desulfurization
There are mainly the following types of mills suitable for processing 325 mesh limestone powder for desulfurization.
1. Raymond mill
Raymond mill has two models, the maximum feed size is 30mm, and the production capacity is 8-176 tons/day. Compared with other milling equipment, its advantages are stable performance, easy operation, and relatively cheap price. High cost performance, very popular with users.
Parameters Table
Model | Roller | Ring | Feeding Size(mm) |
Finished Size(mm) |
Mill System Power(KW) |
Capacity (t/h) |
Overall Dimension (mm) |
|||
Quantity (piece) |
Diameter (mm) |
Height (mm) |
Inner Diameter (mm) |
Height (mm) |
||||||
YGM7815 | 3 | 260 | 150 | 780 | 150 | 15 | 0.613-0.033 | 35.7 | 1.0-3.0 | 4300*3500*5100 |
YGM9517 | 4 | 310 | 170 | 950 | 170 | 25 | 0.613-0.033 | 72.65 | 2.1-5.6 | 7100*5900*7900 |
YGM1280 | 3 | 370 | 240 | 1170 | 240 | 20 | 0.613-0.033 | 145.15 | 4.5-12.0 | 9300*5600*8200 |
YGM1300 | 4 | 410 | 280 | 1270 | 280 | 20 | 0.613-0.033 | 202.15 | 6.5-16.0 | 9100*8200*8400 |
YGM1620 | 4 | 450 | 300 | 1500 | 300 | 20 | 0.613-0.033 | 322.2 | 8.0-20.0 | 12500*5700*10500 |
YGM1720 | 4 | 510 | 300 | 1720 | 300 | 35 | 0.613-0.033 | 450 | 10.5-28.0 | 11550*9500*10500 |
2. High pressure mill
High pressure mill can not only grind fine powder of 80-425 mesh, but also coarse powder of 30-80 mesh. It has a wider range of applications. The maximum feed size is 35 mm and the production capacity is 1.5-40t/h.
Parameters Table
Model | Grinding Diameter(mm) | Input Size(mm) | Output Size(mesh) | Power(KW) | Capacity(t/h) | Overall Dimension(mm) |
YGM9720 | 970 | 20 | 80-600 | 97 | 1.5-7.5 | 8200*6010*7200 |
YGM1280 | 1280 | 20 | 80-600 | 145 | 2-10 | 8500*7500*8200 |
YGM1300 | 1300 | 20 | 80-400 | 222 | 2-14 | 10100*9300*8330 |
YGM1620 | 1620 | 30 | 80-400 | 322 | 2.5-18 | 10250*8090*10510 |
YGM1720 | 1720 | 35 | 80-325 | 442 | 6-30 | 12500*12250*10400 |
YGM2150 | 2150 | 35 | 80-325 | 572 | 12-40 | 12000*11600*11000 |
3. Three-ring medium-speed micro powder grinding mill
Three-ring medium-speed micro powder grinding mill contains a powder classifier and an analyzer, with high efficiency. The finished product of this product is more detailed, up to 3000 mesh. Three-ring medium-speed micro-grinding powder is more refined, more energy-saving and environmentally friendly. The maximum feed size is 20mm, and the production capacity is 0.5-45t/h, which is very suitable for high-volume ultra-fine powder operations.
Parameters Table
Model | HGM80 | HGM80A | HGM90L | HGM100L-Ⅱ | HGM100P | HGM125L | HGM1680L |
Ring Diameter(mm) | 800 | 800 | 900 | 1000 | 1000 | 1250 | 1680 |
Ring Number (PCS) | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
Input Size (mm) | ≤10 | ≤10 | ≤10 | ≤15 | ≤15 | ≤20 | ≤20 |
Output Size (mesh) | 150-3000 | 150-3000 | 150-3000 | 150-3000 | 150-3000 | 150-3000 | 150-3000 |
Capacity (t/h) | 0.5-5.5 | 0.5-5.5 | 0.8-6.5 | 1.2-10 | 1.2-11 | 2.5-20 | 5-45 |
Outlet Size L*W*H (mm) | 8605*4139*6050 | 10454*3393*6626 | 11735*3952*7525 | 14507*3633*7562 | 14362*4200*7562 | 19261*4406*8591 | 25067*5414*9007 |
Main motor power (kw) | 75 | 75 | 55*2 | 132/75*2 | 132/75*2 | 185 | 315 |