Brief Introduction
MTM Medium Speed Trapezium Mill is a leading world level industrial mill. It is designed by our engineers and technical workers, basing on many years’ industrial mill research, and adopting world leading powder processing technology. Our machine adopts numbers of national patent of mill, such as trapezium working surface, flexible connection, roll linked pressure boost, etc. It has completely overcome traditional mill’s defect in application, capacity, fineness, energy consumption, service life, etc. And it is the ideal substitute of traditional mill, such as Raymond mill, high pressure suspension mill, ball mill, etc. Nowadays, it has widely used in metallurgy industry, electric power industrial, chemical, building, steel industry, coal industry, etc. And it has achieved large economic benefits and social benefits.


Application
It is widely used in many industrial, such as building, chemical, chemical fertilizer, metallurgy, mining, nonmetal, abrasive, bearing materials, ceramic, steel, thermal power, bricks & tiles, coal industry, etc. It can grind these materials which are 9 or less on the Mohs scale, and moisture is below 6%., and they should be nonexplosive and nonflamable mining materials. The final size can be adjusted from 30 to 400 meshes easily. There are thousands materials our machine can grind. The typical materials are cement (raw meal and cement clinker), quartz, feldspar, calcite, gypsum, limestone, dolomite, graphite, fluorite, aedelforsite, phosphate ore, fused calciummagnesium phosphate, carbamide, electrolytic manganese metal, ferromanganese, coal, gangue, slag, zirconium, steatite, granite, orthoclase, marble, barytes, ceramics, glass, etc.

Working Principle d the grinding ring where it is pulverized.

Air enters from below the grinding ring and flows upward, carrying fines to the classifying section. The classifier sizes the pulverized material and returns oversized particles to the grinding chamber for further processing. The mill operates under negative pressure conditions, thus minimizing mill maintenance and plant housekeeping problems, while maximizing the service life of major mechanical components.

Technical Advantage

MTM Medium Speed Trapezium Mill has lots of matchless advantages, and it adopts latest national mill patents, and it has these features: new designing, reasonable structure, smaller size, lower energy consumption, longer service life, and less consumption of wearing parts, higher performance cost ratio, etc. All its technical performance has reached leading international level. Compared with Raymond mill, ball mill, and high pressure suspension mill, etc, it has these five technical advantages:

1、The ladder-shaped rollers and ring improve crushing efficiency greatly. The rollers and ring are designed in inverted trapezium, which reduce the material’s slip velocity between rollers and ring, extend grinding time, and enhance crushing effect.

2、The press spring with balancing pressurized function and the forming resilent connection with steady and vibration reducing function. Our machine adopts level principle. The symmetrical roller assembly is connected by horizontally placed spring rod. When the large materials impact one roller assembly, to keep balance, the radial force may pass to another roller assembly which is on the plane of symmetry through spring rod. Under this condition, the whole device’s bearing is improved about 40% than others; the forming resilent connection can reduce the vibration and noise, and avoid resonance.

3、The powder classifier adopts high density impeller which can increase powder precision and capacity. It is a proved fact: under fixed spindle speed, enhance the density of impeller is to enhance the fineness of final products. In other words, when the fineness of final product is fixed, the spindle speed of high density impeller is lower than the low density one, thus under the same power, the density one reduces resistance to air flow, the capacity is improved more than 50%.

4、There is high-efficiency and energy-saving blower. The efficiency of prismatic blade equipped on the traditional machine is only 62%, but the efficiency of the energy saving blower whose impeller and blade are both stamping is 85%.

5、There is convenient impeller adjusting device. The clearance between housing and end of powder classifier’s blade also effects fineness. Our mill is convenient to adjust the clearance.

Construct

The whole set of MTM medium speed trapezium mill consists of main mill, powder classifier, speed reducer, blower, jaw crusher, bucket elevator, vibrating feeder, storage bin, bag filter, pipe and fitting, cyclone powder collector, electric control cabinet, electric motor, etc.

Table 1

Ite MTM100 MTM130 MTM160
Number of roller 4 5 6
Major diameter of roller ×Height（mm） Φ320×200 Φ410×240 Φ440×270
Internal diameter of roller × Height（mm） Φ980×200 Φ1280×240 Φ1600×270
Main engine spindle speed(r/min) 130 103 82
Maximum feeding grain size （mm） <25 <30 <35
Grain size of finished product (mm) 1.6 －0.038 1.6 －0.038 1.6 －0.038
Output (t/h) 3 － 8.8 6 －13 13 －22
Overall dimension (mm) 9910×5365×8310 7910×7000×9645 12550×5700×8355
Weight(t) 16 26.1 35

Note: If there is any modification, all parameter and overall dimension are subject to the operating Instructions.

Table 2

Name Item Unit Specification and technical data
MTM100 MTM130 MTM160
Motor of main
engine
Model Y225M-4 Y280S-4 Y135M1-4
Power kw 45 90 132
Spindle speed r/min 1480 1480 1480
Motor of adjustable varying speed motor Model GZT2-42-4 YCT200-4B JZT2-52-4
Power kw 5.5 7.5 11
Spindle speed r/min 125~1250 125~1250 125~1250
Motor of elevator Model Y1000L-4 Y1000L2-4 Y112M-4
Power kw 3 3 4
Spindle speed r/min 1420 1420 1420
Motor of centrifugal induced draught fan Model Y225S-4 Y250M-4 Y112M-4
Power kw 37 75 110
Spindle speed r/min 1480 1480 1480
Motor of jaw crusher Model PE 200x350 250X400 250x400 257x750
Y160M-6 Y180L-6 Y180L-6 Y200M-6
Power kw 7.5 15 15 22
Spindle speed r/min 970 970 970
Magnetic vibration-actuated feeder Model GZ1F GZ2F GZ3F
Spindle speed watt 60 150 200

1 set