SCM Ultrafine Mill, Grinding Mill
  • Name :

    Ultrafine Mill

  • Features:Energy efficient, good economic
  • Application:Ultra-fine milling machine is mainly applied to metallurgical, building materials, chemicals, mining and other mineral materials crushing equipment....
  • Contiguous item:Jaw Crusher Machine, Hammer Crusher
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  • 1, according to altered materials, the best of the agnate liner and grinding, to ensure artefact abstention and whiteness.
  • 2, a ancient allocation airiness of 300 ~ 2500 cobweb any time, additional a set of allocation apparatus system, the additional classification, airiness up to d97 ≤ 2um (6250 head), to accomplish the accomplished akin of calm and adopted dry grading.
  • 3, a new bearing of ultra-fine brawl comminute allocation assembly band is characterized by added than the brawl comminute allocation assembly band in energy-saving technology, allocation accurateness to accomplish a advocate advance and advance than added brawl comminute allocation assembly band and added types of energy-saving 40% or more.
  • 4, the accessories abortion amount is low, abiding operation; the arrangement uses able abundance control, top amount of automation; abrogating burden breeze acreage design, assembly ambiance is excellent.
  • 5, ultra-fine accumulation brawl comminute for avant-garde design, abundantly advance the ability of grinding, mill with the accurate ratio, can finer aftermath a ample amount of accomplished powder.
  • 6, the arrangement architecture is added reasonable, civilian and accessory accessories investment than added brawl allocation assembly band bargain by 50%.
  • 7, assembly capacity, can undertake an anniversary achievement of 0.5 to 50 actor bags of assembly band turnkey projects.
Name & Model SCM8021 SCM9024 SCM10036 SCM12544
Ring roll number (pcs) 21 24 36 44
Working diameter (mm) Φ800 Φ900 Φ1000 Φ1300
Grinding rill and roller path number (pcs) 1X3 2×4 1×4 2×4
Revolving Speed (rmin) 230-240 200-220 180-200 135-155
Max feed size (mm) ≤10 ≤20 ≤20 ≤20
Final size (mesh) 325-2500 325-2500 325-2500 325-2500
Output (kgh) 400-4500 600-5500 400-7500 1200-12000
contour dimension (mm) 13000×3000×5800 14700×4800×8600 18000×4600×8600 14000×9000×10250
Whole machine capacity (kw) 144-165 185-204 263-290 380-430
Main motor Model YB2-250M-4 YB2-280M-8 YB2-315L1-6 YB2-315L2-6
Power (kw) 55 45×2 110 160
Rotate speed (rmin) 1440 980 990 990
Analytical engine (FM motor) Model Y180M-4 Y180L-4 Y100L1-4 YB2-225S-4
Power (kw) 18.5 22 30 37
Rotate speed (rmin) 1440 1440 1440 1440
Blower motor Model Y225M-2 Y250M-2 Y280M-2 YB2-250M-2
Power (kw) 45 55 75 55×2
Rotate speed (rmin) 2940 2940 2940 2940
Elevator Bucket model TH-200 TH-200 TH-300 TH-300
Motor model Y100L-4 YB2-100L2-4 YB2-112M-4 YB2-112M-4
Motor power (kw) 3 3 4 4
Rotate speed (rmin) 1440 1440 1440 1440
Hammer Crusher Hammer Crusher model PC300×400 PC400×600 PC400×600 PC600×800
Motor model YB2-160M-4 YB2-180M-4 YB2-180M-4 YB2-280S-6
Power (kw) 11 18.5 18.5 45
Rotate speed (rmin) 1440 1440 1440 990
Magnetic vibrating feeder Model GZ1F GZ1F    
Power (kw) 0.06 0.06    
Electrical machine Model     LS159×1050 LS159×2000
Power (kw)     2.2 3
Discharge valve Discharge valve model ZJD-200 ZJD-200 ZJD-200 ZJD-250
Motor model YB2-80M2-4 YB2-80M2-4 YB2-80M2-4 YB2-90S-4
Power (kw) 0.75×2 0.75×2 0.75×3 1.1
Rotate speed (rmin) 1440 1440 1440 1440
Pulse dust collectors Model DMC120-II model DMC144-II model DMC184-II model DMC160-II model*2
Air compressor Air compressor Model KSH100D-7.5KW KSH240D-15KW KSH240D-15KW KSH240D-15KW×2/td>
Motor model YB2-132M-4 YB2-160L-4 YB2-160L-4 YB2-160L-4
Power (kw) 7.5 15 15 15
Rotate speed (rmin) 1440 1440 1440 1440

Ultrafine mill is a relatively high yield, product quality is also better grinding machinery and equipment, in the application than other grinding equipment to a wide range, more in line with people's production requirements. The ultrafine mill is one of the types.

This mill is mainly used in the cement plant finished some of the grinding, and it also applies to metallurgical, chemical, power and other industrial and mining enterprises of the grinding process. Can be used for open grinding, but also for the composition of the circulation with the powder ring grinding. Mill has a strong adaptability to the material, can continue to produce, broken than large, easy to speed grinding products, such as the fineness of the characteristics. It can be dry production or wet production, can also be grinding and drying at the same time operations.

In the production and processing, the performance of its equipment, product performance structure than the other grinding equipment is better, more applicable to the production and processing, the current application of ultrafine mill has been more than ordinary ordinary ultra-fine grinding application range, in the Some of the production and processing of the process showed a lot of performance and structural advantages, for example, the process is relatively simple, less investment, but the price is relatively high and quick; in the internal structure of the mill liner, activation ring, Plate, export grate plate and other grinding results, slag powder grinding power consumption is less than 55Wh, cement powder grinding power consumption is less than 30kWh; and in the overall structural performance, which meets the clinker, slag grinding characteristics and finished product quality Some requirements, resulting in its grinding area is greater than 430 square meters / kg.

Ultrafine mill is broadly acclimated in automated production, of which ultrafine milling apparatus assembly band is the ultrafine mill technology and self-shunt crumb allocation technology absolute aggregate of new energy-saving and able mill assembly line.

The alive assumption of the actual by the asperous afterwards the alteration from the accessories into the ultra-fine alternate brawl mill, comminute mill media with the comminute if the activity acquired by the appulse of the actual crushing and mill crushed, ashamed actual afterwards Unloading silo into the self-shunt crumb classifier for classification, abolition gas absolved by the fan.

The main components of the grinding machine in the ultrafine mill

1, roller

Roller is the main working parts of ultrafine milling machine, roller speed is higher, bear the work pressure is large, in order to make the roller to meet the requirements of the process, manufacturing roller material requires a certain strength, toughness , Abrasion resistance and proper frictional properties. The surface of the roller should have sufficient strength and hardness, and has good thermal conductivity to make the heat generated when grinding out, so that the roller temperature is not too high.

2, feeding institutions

The feeding mechanism is an important part of the ultrafine mill. Whether the material can enter the working area of ​​the roller continuously and evenly depends on the structure of the feeding mechanism, the size of the feed roller, the surface shape and the motion parameters.

3, the control system and rolling distance adjustment agencies:

The feeding and loose closing of the ultrafine mill can be controlled automatically through the control system.

4, transmission institutions

The drive of the mill includes the drive of the fast roll, the drive between the rolls, the drive between the front and rear rollers of the feed roller.Feed roller drive in two forms: one is through the stepless speed motor motor drive; the other is installed in the fast roller or slow roller on the belt with a belt drive. The drive between the feed rolls is usually driven by a single-sided synchronous toothed belt or gear, driven by the front roll.

5, roller cleaning agencies

Roller at work, the surface and the cave will be sticky with silty material, especially when the raw material is high and the rolling distance is small. The role of the roller cleaning mechanism is to clean up these adhesion to the surface of the roller material, to maintain the normal state of the roller surface to ensure the effect of grinding. Brush and scraper mechanism can move as a whole, when closing with the roller contact, loose when leaving the roller.

6, the discharge system

There are two ways out of the ultrafine milling machine, one is out from the hopper, into the slide into the feed pipe, another way is to set the mill inside the mill suction device.

Working Principle:

SCM Ultrafine Mill, Grinding Mill

The process of ultrafine milling machine

The material is fed from the feed hopper in the upper part of the extruder mill. Under the rotation of the two rollers, the centrifugal ultrafine mill is extruded first in the roll gap and then the column is formed along with other materials. Where the material is pressed and subject to increasing pressure until the minimum gap between the two rolls, the pressure reaches the maximum, the pressure of the material layer, that is, the material column, from the beginning to enter the α angle, with the Laying layer down to move, increasing density, the formation of cake.

Any of the particles in the layer are subjected to extrusion from adjacent particles in all directions. Particles in the great pressure when the strain occurs, resulting in crushing and micro-crack effect, the so-called grain crushing effect. This process is granule crushing process.In theory, the crushing of the formation of granulation layer crushing conditions are three main points:

First, must be forced to feed, the material can not be free to fall between the two pressure roller;

Second, the feed size should be less than the gap between the two rollers;

Thirdly, the pressure applied between the material particles is above 50 MPa. In fact, the second point is not absolute except for the first and third points, and the feed size can be slightly relaxed, as long as the two press rolls Smooth bite the material particles can be.

In addition, BHBergstom's study shows that when the particles are crushed, a large amount of noise and debris spatter will occur if the strain is released rapidly. This part of the energy and kinetic energy loss is about 45% of the total input energy. To reduce these losses, the design of extrusion grinding using two measures:

1. To avoid the sudden pressure of the material and the rapid release of the strain energy, in the material before crushing a gradual compaction of the transition zone, from the roll began to squeeze the material layer until the cake from the gap between the two rollers, the pressure angle α About 50 to 6 degrees;

2. All aspects of restrictions on the splash of material fragments, the use of the top of the forced feeding and side baffle seal to form a dense column, the debris of the kinetic energy too late to splash it, was immediately absorbed by the material layer, part of the recycling into The material is subjected to crushing. The whole crushing process is divided into three stages - compacting, crushing and kneading, in the area (point load) material particles squeeze each other compact, the gap between the particles dropped, the volume shrinks, keep intimate contact between particles, then The pressure (stress) is not large, the material layer displacement (strain) is very large in the 2 area (line load) pressure gradually increased, the pressure between the particles to each other to reach its damage stress value, the particles have been crushed, The slope of the curve increases.

At the same time due to the continuous occurrence of comminution, has been shattered debris, debris and powder need to re-arrange the position to maintain the state of mutual crabs, so the pressure increases, the material layer volume continues to shrink in the 3 area (radial Extrusion) crushing operations are continuously deepened in uniaxial crushing, the material is further pulverized, or microcracks are generated inside the particles. This is the main area of ​​the crushing operation, the highest pressure, the curve is also the steepest, the crushing efficiency is also the highest for a certain material, stress and strain curve has an ideal representative of the ideal design conditions - called the critical pressure. The process parameters of the extruder mill should take into account the above-mentioned material pulverization process to achieve stable operation and the best crushing effect.The process parameters mainly include the ratio of the diameter D of the press roller to its width w, the choice of working pressure, Roller peripheral speed, spacing and material throughput.