After absorbing advantages from foreign superfine vertical mills and considering analysis of domestic clients' needs, Longyi makes targeted improvements on existing vertical mill's technology to develop a new-type vertical mill fit for superfine grinding of nonmetallic minerals. Self developed upgraded multi-head vertical classifier structure, Longyi classifier perfectly slove particle cutting point high and low sieving rate, compare with the traditional classifier, it fully ensure the powder quality that the finished powder fineness could reach 30%-60% (particle size <2um, Detection machine: Malvern Micro laser particle size analyzer).After years of research and development Longyi new abrasion-resisting alloy steel is successfully applied in grinding rollers, grinding bearing and other parts, and it extremely endows the wear-resistant parts long service life, promoting the wear parts replacement cycle.
Process Flow Diagram for Vertical Mill
Application
It can be used for processing of nonmetallic minerals i.e. calcium carbonate, calcite, clay, kaolin, dolomite, talc, barite, wollastonite, brucite, calcium oxide, gypsum, coke coal, slag, phosphate etc.
Energy-consumpation Comparison of Different Manufacturers' Vertical Mill
|
Company |
Main Motor Power(Kw) |
Air Blower Power(Kw) |
Classifier Power(Kw) |
Air Compressor Power(Kw) |
Total Power(Kw) |
|
Longyi Vertical Mill LYLM2400 |
250 |
185 |
75 |
30 |
540 |
|
Taiwan Vertical Mill |
250 |
200 |
75 |
45 |
570 |
|
China Northeast Vertical Mill |
220 |
200 |
75 |
45 |
540 |
Technical Advantages
Multi-head vertical classifier
New upgraded multi-head vertical classifier can ensure powder quality stable, narrow particle size distribution, low cutting point and high sieving rate.
Grinding efficiency
With self-developed compacting system and optimized air duct system, Longyi Vertical Mill improves the grinding efficiency and reduce the unit energy consumption.
Abrasion resistance
All main wear- resistant parts use quality abrasion- resisting cast iron material.
Specialized maintenance cylinder
New designed maintenance cylinder beside roller, rollers could be turned out by hydraulic drive, easier to do maintenance and repairement.
Smart PLC control system
Remote centralized control, one-button operation, intelligent feeding control system ensure mill operation stable and high efftciecy output.
|
Test Project |
Super Fine Calcium Carbonate Powder |
|||||
|
Market Standard |
mesh |
800 |
1000 |
1500 |
2000 |
2500 |
|
Output/H |
t |
9.5~11.5 |
7.5~9 |
6.5~7.5 |
4.5~5.5 |
2.5~3.5 |
|
Specific Surface Area |
cm²/g |
11000±500 |
14000±500 |
15500±500 |
17000±500 |
19000±500 |
|
325 Mesh Residue |
% |
0.015 |
0.015 |
0.01 |
0.002 |
0 |
|
<2 μm |
% |
32 |
38 |
42 |
51 |
60 |
|
Mean Diameter: D50 |
μm |
4.5 |
3.2 |
2.4 |
2.0 |
1.4 |
|
Particle Distribution: D97 |
μm |
23 |
20 |
16 |
12 |
9 |
|
Cutting Point |
μm |
49 |
42 |
35 |
28 |
18 |
|
Moisture |
% |
<0.3 |
<0.3 |
<0.3 |
<0.3 |
<0.3 |
|
Power Consumption |
Kw |
8~40 |
40~50 |
54~56 |
65~72 |
110~125 |
After absorbing advantages from foreign superfine vertical mills and considering analysis of domestic clients' needs, Longyi makes targeted improvements on existing vertical mill's technology to develop a new-type vertical mill fit for superfine grinding of nonmetallic minerals. Self developed upgraded multi-head vertical classifier structure, Longyi classifier perfectly slove particle cutting point high and low sieving rate, compare with the traditional classifier, it fully ensure the powder quality that the finished powder fineness could reach 30%-60% (particle size <2um, Detection machine: Malvern Micro laser particle size analyzer).After years of research and development Longyi new abrasion-resisting alloy steel is successfully applied in grinding rollers, grinding bearing and other parts, and it extremely endows the wear-resistant parts long service life, promoting the wear parts replacement cycle.
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