Raymond Mill

Applied materials: various non-flammable and explosive minerals such as gypsum, talc, calcite, limestone, marble, potash feldspar, barite, dolomite, granite, kaolin, bentonite, medical stone, iron ore, etc.

CAPACITY: 0.5-20 ton/hour
MAX FEEDING SIZE: <35mm
RAW MATERIALS: Grinding gypsum, talc, calcite, limestone, marble, barite, dolomite, granite, kaolin, bauxite, iron oxide red, iron ore, etc.
APPLICATION: chemicals, building materials, metallurgy, refractory materials, pharmaceuticals, cement

The Raymond mill, also called Raymond roller mill, combines grinding, classifying, and if necessary, drying, in one machine to produce precisely sized powders to meet exact production specifications. It is an efficient fine grinding machine for large-scale powder production.

Raymond Mill

Wide applications of Raymond mill

Raymond mill is widely used in chemical fertilizer, chemical product, and mineral industries to grind non-combustible and non-explosive non-metallic materials with Mohs hardness below 9.3 and humidity below 6%.

It is an excellent grinding machine for barite, calcite, calcium carbonate, potassium, feldspar, talc, marble, limestone, dolomite, fluorite, lime, activated clay, activated carbon, bentonite, kaolin, cement, phosphate rock, gypsum, glass, etc.

Raymond Mill

Raymond mill parts

Raymond mill is mainly composed of Roller, Ring, Shovel, Shovel base, Bearing, Roller bushing, Spring for roller, Roller hanger, Reducer, Main shaft, Bevel gear & pinion, Classifier, Blower, Locking nut, Roller assembly, Snail shell, Motor, Elevator, Chain, Vibrating feeder, Crusher, etc.
Raymond Mill

(Structure Raymond mill plant)
Raymond Mill
(Raymond mill inside structures)

Main raymond roller mill parts

Important parts and their functions

speed reducer of Raymond mill grinding ring and rollers blower of raymond roller mill classifier of raymond roller mill
Auxiliary speed reducer

It is mainly used to reduce the speed of the rotating motor.

Grinding roller and grinding ring

The materials are ground between the rollers and the grinding ring. As the wearing parts of Raymond mills, they are all made of excellent wear-resistant materials to prolong the service life of the equipment.

Blower

A blower can blow the powder towards the upper classifier for classifying.

Classifier

The classifier is for classifying the ground powders. The speed of the classifier determines the fineness of the finished product.

Raymond mill plant working principle

  1. Raw materials are crushed into specified particle size by a jaw crusher, lift to the hopper by a bucket elevator, and then sent into the grinding chamber by a feeding machine quantitatively.
  2. Rotating shovels scoop up raw materials and project them between the rollers and the ring where the grinding takes place.
  3. The pulverized powder is blown to the classifier by the blower airflow for classifying. The oversized particles fall into the grinding chamber for regrinding. Qualified powders flow into cyclone collector through the classifier and are collected as end products.
  4. To ensure that the Raymond mill works under negative pressure, the increased airflow enters the pulse dust collector through the pipe and is discharged into the atmosphere after purification. The dust-free operation in the workshop is realized by the pulse collector.

Quartz stone grinding plant in Pakistan

Features of Raymond mill

1. Large output and high grinding efficiency

Outputs of 8 to 176 tons per shift (8 hours). The finished powder is uniform in fineness, and the passing rate is as high as 99%.

2. Ability to produce powders of different particle sizes

Different uses of powder require different particle sizes. Therefore, the fineness of the Raymond mill can be adjusted arbitrarily between 0.173mm and 0.044mm. The achievable upper particle size is 800 mesh.

3. Low energy consumption

The Raymond pendulum mill achieves high requirements for grain size distribution easily and extremely energy efficiently, even in case of the highest demands regarding the fineness to be achieved.

4. Extremely robust and durable design

Less vibration due to integral gearbox increasing the mass of the mill and special designed anti-vibration device. Vibration reduction avoids cracking or damage to the frame and return box from long-term vibration and fatigue.

The important parts are made of high-quality steel, and the wearing parts are made of excellent wear-resistant materials to improve wear resistance.

5. Environmental protection

The good sealing performance of the equipment and the full-pulse dust collector ensure that the dust removal rate can reach 99%.

6. Automatic control

The electrical system adopts centralized control, and the grinding workshop can basically achieve unmanned efforts.

Features of Ftmmachinery Raymond mill

Parameter

Parameter
Model
Raymond mill62 High strength66 High strength76 High strength87 High strength92 High strength93 High strength97 Raymond mill4119 Raymond mill4525
Feeding
size(mm)
<15 <15 <20 <25 <25 <25 <25 ≤25 ≤30
Size of finished
product(mm)
0.173-0.033 0.173-0.033 0.173-0.033 0.173-0.033 0.173-0.033 0.173-0.033 0.173-0.033 0.173-0.044 0.173-0.044
Shift output of
different material
fineness(t)
0.6-9 1-20 1.5-25 2.8-33 3-36 3.5-40 4-52 8-78 16-176
Rotate speed
of central
shart(r/min)
274 190 170 161 148 140 130 105 82
Diameter of
pulverizing
ring(mm)
525 725 850 907.5 973 1006 1050 1400 1770
Diameter of
pulverizing
ring(mm)
150 210 250 270 300 300 310 410 450
Height of
pulverizing
roller(mm)
100 150 150 150 160 160 170 190 250
Main Motor(kw) 7.5 15 18.5 22 30 30 37 75 132
Fan Motor 4-5.5 4-11 4-15 4-18.5 4-22 2-22 4-37 4-75 4-132
Analyzer Motor 6-1.1 6-2.2 6-2.2 6-2.2 6-2.2 6-3 4A-5.5 4B-7.5 4A-18.5

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