Category Archives: grinding equipment

Ball Mill

Published by:

Ball Mills are primarily used for fine grinding. Ball Mill is key equipment which repulverises the material after it is crushed. Ball Mill is widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc. Our company has been amongst the pioneers for many years in the design and application of milling systems for the size reduction of a wide variety of materials including minerals, ores, and coal. There are two kinds of ball mill, grate type and overfall types due to different ways of discharging material.

1.Traditional sliding bearings are replaced by double row roller bearings in small and medium size ball mills to reduce energy consuming
2.Large ball mills adopt pitot pressure or hydrostatic bearings.
3.Air clutch system for starting the motor safely
4.Alternative synchronous or asynchronous motor
5.Low speed driving unit with Lifting device, convenient for maintenance.
6.New Endurable wearing parts to increase service life of vulnerable parts.
7.Alternative PLC automatic control system Optional Accessories ( drum sieve, Hydraulic wrench mobile feeding settings)

Working principle:
The ball mill is a horizontal rotating device transmitted by the outer gear. The materials are transferred to the grinding chamber through the quill shaft uniformly. There are ladder liner and ripple liner and different specifications of steel balls in the chamber. The centrifugal force caused by rotation of barrel brings the steel balls to a certain height and impact and grind the materials. The ground materials are discharged through the discharging board thus the grinding process is finished.

Technical data:

Model Rev. of barrel(rpm) Max ball load(t) Maximum feed size(mm) Output fineness(mm) Capacity(tph) Power (kW) Weight (t)
Ф900×1800 42 1.4 ≤20 0.075-0.89 0.65-2 18.5 3.6
Ф900×3000 41 2.5 ≤20 0.075-0.89 1.1-3.5 22 4.5
Ф1200×2400 36 3.5 ≤25 0.075-0.6 1.5-4.8 30 11.5
Ф1200×3000 32 5 ≤25 0.075-0.6 1.6-5 45 12.8
Ф1200×4500 32 5.5 ≤25 0.075-0.4 1.6-5.8 55 13.8
Ф1500×3000 31 6.8 ≤25 0.075-0.4 2-7 75 17
Ф1500×4500 27 10.5 ≤25 0.075-0.4 3.5–8 110 21
Ф1500×5700 27 15 ≤25 0.075-0.4 3.5-10 132 24.7
Ф1830×3000 26 13 ≤25 0.075-0.4 4-12 160 28
Ф1830×6400 26 23 ≤25 0.075-0.4 6.5-15 210 34
Ф1830×7000 26 25 ≤25 0.075-0.4 6.5-22 210 36
Ф2200×5500 21 30 ≤25 0.075-0.4 10-20 245 48.5
Ф2200×7500 21 33 ≤25 0.075-0.4 16-50 380 56

T130X Superfine Grinding Mill

Published by:

The machine is mainly used in processing powder of mineral materials of metallurgy, building materials, chemical industry, mining, etc. It can grind non-flammable and non-explosive materials with moisture less than 6% such as Feldspar, calcite, talc, barite, fluorite, rare earth, marble, ceramics, bauxite, manganese ore, iron ore, copper ore, phosphate rock, iron oxide red, slag, slag, activated carbon, dolomite, granite, iron oxide yellow, bean cake, chemical fertilizer, compound fertilizer, fly ash, bituminous coal, coke, lignite, Ling U.S. sand, gold, red mud, clay, Kaolin, coke, coal gangue, porcelain clay, kyanite, fluorspar, bentonite, muddy green rock, leaf wax rock, shale, purple rock, Diego rock, basalt, gypsum, graphite, insulation material, etc.

1. Machine body and base are connected flexibly without rigid contact.
2. Machine base is of high intensive, ductile cast iron which is efficient in avoiding crack caused by vibration.
3. Reducer made in China has similar performance as Flender of Germany.
4. Elastic sleeve pin sets couplings are adopted between machine body and reducer.
5. High-density blades are adopted on classifier.
6. Frequency conversion control is adopted in the classifier.
7. Bypass powder collector is adopted.
8. Equipments are distributed under same resistance program.
9.Two outlets of powder collector and that of dust collector are distributed within one line.
10. Set maintenance platform.

Working principle:
Large materials are crushed by jaw crusher into required size for mainframe, then the crushed materials are elevated to the hopper by bucket elevator,then to the grinding chamber for grinding by vibrating feeder evenly and continuously. The powder goes upwards with the airflow, after separating by the classifier, those which can meet the fineness requirement enters into the collector through pipes for separating and collecting, and discharged from the discharged valve as finished products. The airflow is sucked into blower through wind recycling pipe at the upper part of cyclone power collector. And the closed airflow circulation system with negative pressure ensures the environmental health of production line site.

Technical data:

1) Mainframe parameters

Item Unit Specifications &Technical data
Quantity of roller pcs 4
Diameter of roller x Height mm Ф410×210
Diameter of ring x Height mm Ф1300×210
Rotation speed rmp 103
Max. feeding size mm <30
Output size mm 0.074—0.038
Capacity t/h 4-13
Weight t 18

(1) capacity in the table is referred to calcite, under the condition of 80% passing through.
(2) Any change of parameters and shape shall be subject to the usage and maintenance manual instruction with delivery.

2) Power of equipped systems

Name Item Unit Specifications& Technical data
Motor for mainframe Model Y280S-4
Power kw 75
Rotating speed rpm 1480
Adjustable speed motor for classifier Model Y160L-4
Power kw 15
Rotating speed rpm 1460
Motor for elevator Model Y100L2-4
Power kw 3
Rotating speed rpm 1430
Motor for blower Model Y280M-4
Power kw 90
Rotating speed rpm 1480
Motor for Jaw Crusher Jaw crusher Model PE 250×400
Model Y180L-6
Power kw 15
Rotating speed rpm 970
Electromagnetic vibration feeder Model GZ3F
Power W 200

MTW European Trapezium Grinding Mill

Published by:

MTW European Trapezium Grinding Mill— the latest type of Raymond Mill, has become one of the most advanced grinding mills in the world with its so many intellectual properties like bear-gear drive, inner oil lubricating system, arc air channel, etc.

1. Efficient
Bevel gear overall drive reduces noise and increases drive efficiency and capacity.Inner automatic thin-oil lubricating system makes better lubrication for bearings
3. Advanced
Arc air channel reduces energy consumption and intelligent control ensures better operation
2. Economical
Edge-replaceable shovel saves you money and frequency-control separator and cyclone powder collector ensure high capacity
4. Environmentally friendly
Unique air recycling system and dust collector make clean environment

Working principle:
The system consists of grinding mill, separator, air blower, jaw crusher, vibrating feeder, hopper, dust collector, pipe, powder collector, electric cabinet, motors, etc.
Big lump materials are crushed to required size by jaw crusher, then elevated to buffering hopper through elevator, after that fed into the mill to be ground. Materials are to be ground between ring and rollers, and move up with the air flow, those particles which cannot pass the separator will fall down and be ground again, while others will be collected as finished product.

Technical data:

Table 1

Items MTW110 MTW138 MTW138Z MTW175 MTW175Z MTW215 MTW215Z
Q’ty of Rollers(PCS) 4 4 4 5 4 (5) 5 5
Major diameter of roller(mm) Ф360×190 Ф460×240 Ф460×240 Ф520×280 Ф580×280
Ф640×320 Ф640×320
Inner Diameter of Ring (mm) Ф1100×190 Ф1380×240 Ф1380×240 Ф1750×280 Ф1750×280 Ф2150×320 Ф2150×320
Main mill Rotating speed (r/min) 120 96 96 75 75 65 55-70
Feeding size (mm) <30 <35 <30 <40 <35 <50 <40
Finished Powder Sizes (mm)

1.6-0.045 the finest 0.038

Capacity (t/h) 3.5-10 6-15 6-20 11-25 11-35 20-50 20-50
Overall Dimension (L×W×H)(mm) 8425×7933
Weight (t) 18 28.5 28.5 46 46 96 97.0122

Table 2

Name Item MTW110 MTW138 MTW138Z MTW175 MTW175Z MTW215 MTW215Z
Motor for
Power(Kw) 55 90 90(110) 160 160(185) 280 280
Model YX3-280M-6 YX3-315M-6 YX6-315M-6 Y2-355M2-8 Y2-355M2-8 Y3-400-8 Y3-400-8
Rotating speed(r/min) 980 990 990 740 740 740 740
Adjustable speed
motor for classifier
Power(Kw) 7.5 22 18.5 37 30 90 55
Model YVP160M-6 YVP200L2-6 YVP200L2-6 YVP250M-6 YVP250M-6 YVP-280M-4 YVF2-280M-6
Rotating speed(r/min) 1440 1480 980 1480 980 1480 980
Motor for
centrifugal blower
Power(Kw) 55 110 110(132) 200 200(220) 315 315
Model YX3-250M-4 YX3-112M-4 YX3-315S-4 YX3-250M-4 YX3-315L2-4 YX3-160M-4 YX3-355L-4
Rotating speed(r/min) 1480 1440 1480 1480 1480 1440 1480

LM – Vertical Grinding Mill

Published by:

LM series vertical mill is one advanced mill, adopting top technology domestic and abroad, and based on many years’ mill experiences. It can crush, dry, grind, and classify the materials.
LM series vertical milling machine can be widely used in such industries as cement, power, metallurgy, chemical industry, non-metallic mineral. It is used to grind granular and powdered materials into powder with required fineness.

1. Low Investment Cost. This mill itself can crush, dry, grinding, classifying, so the system is simple, and occupation area is about 50% of ball mill system. In addition, it can be installed outside, so it will reduce a large number of investment costs.
2. Low Operation Cost. ⑴ High efficiency: roller compacted materials directly onto the grinding disc, so power consumption is low. Compared with ball mill, it saves energy consumption by 30% ~ 40%. ⑵ Less wear and tear: As the roller is not in direct contact with the disc, and material of the roller and liner is high quality, so life lime is long.
3. High Drying Ability. As the hot air inside contacts directly with the material, drying ability is higher, and it saves energy. By regulating the air temperature, it can meet requirements with different humidity.
4. Simple and reliable operation. ⑴ It is equipped with automatic control systems, so remote control makes it easy to operate. ⑵ It is equipped with one device,which prevents the roller from contacting with the liner directly, and avoids the destructive impact and severe vibration.
5. The stability of product quality. As the material stays in the mill for a short time, it is easy to detect and control the product particle size and chemical composition, to reduce duplication of milling, stable product quality.
6. Maintenance convenience. By repairing fuel tank, rotating the arm, it is fast to replace the roller sleeve, and liner, and reduce the downtime loss.
7. Environmental protection. It is with small vibration, low noise, and the overall sealing. The system works under negative pressure, so there is no dust going out. It meets the requirements of the state Environmental Protection.

Working principle:
Vertical mill has two pairs of grinding rollers, each pair of roller composed of two narrow rollers, mounted on the same axis and can rotate at different speeds. There are two circular disc slot, and roller to the tire shape, work pressure in the tank. Disc roller and the relative sliding velocity between small and roller can swing, even if the roller sleeve and the disc after the liner wear can guarantee a good abrasive, will not affect the grinding effect. Roller symmetrical structure, one side can be upside down after use and wear. Material grinding process: hydraulic pneumatic roller device through the pressure applied to the material on the crushing of materials, the materials have been moved to crush the edge of disc, from the disc around the nozzle from the exhaust air to improve these materials to Separator.Meal to separate returns after a concentrated mill, fine powder was collected in the precipitator unloading. In the gas flow is small, the meal can not be increased to enhance air flow, they would fall through the nozzle discharged outside the mill, bucket elevator to be transported to the feeder of vertical mill and was re-grinding mill feed people.

Technical data:

Series Coal mill
Model LM130M LM150M LM170M LM190M LM220M LM240M
Disc Dia. (mm) 1300 1500 1700 1900 2200 2400
Capacity (t/h) 10~15 16~22 20~28 26~35 35~45 40~50
fineness (R0.08) <15% <15% <15% <15% <15% <15%
Coal powder moisture <1% <1% <1% <1% <1% <1%
Max.input size (mm) <38 <40 <42 <45 <50 <55
input moistrure <15% <15% <15% <15% <15% <15%
Inlet air temperature (℃) <350 <350 <350 <350 <350 <350
Outlet air temperature (℃) 75~95 75~95 75~95 75~95 75~95 75~95
Dimension Lmm 3500 4200 4700 8500 10200 11700
Wmm 3400 3900 4500 5600 6700 7710
H mm 5800 7100 8300 8800 10600 12200
Weight (t) 46 75 94 100 122 157
Series LM for hard materials
Model LM130N LM150N LM170N LM190N LM220N LM240N LM280N LM340N LM370N
Disc Dia. (mm) 1300 1500 1700 1900 2200 2400 2800 3400 3700
Capacity (t/h) 7~11 9~13 11~15 14~20 22~26 27~35 48~55 65~89 90~100
Output fineness Micron(μm) 170~45 170~45 170~45 170~45 170~45 170~45 170~45 170~45 170~45
mesh 80~325 80~325 80~325 80~325 80~325 80~325 80~325 80~325 80~325
Moisture of slag ≤12%
Product Blaine ≥420㎡/kg
product moisture ≤1%
Main mill power(kw) 200 280 400 500 800 900 1120 1800 2240