Grinding Mill

Raymond Mill

CAPACITY

3.5-45t/h

FEED SIZE

≤30–50 mm
Application areas:Raymond Mill is widely used in mining, metallurgy, construction, chemical, and non-metallic mineral processing industries.
Applicable materials:such as gypsum, talc, calcite, limestone, marble, potash feldspar, barite, dolomite, granite, kaolin, bentonite, medical stone, iron ore, etc.

Product Overview

The XINGAONAI Raymond Mill is a dry grinding machine designed for producing mineral powder from limestone, calcite, barite, dolomite, gypsum, talc and other non-flammable materials. It processes materials with Mohs hardness below 7 and moisture below 6%.

Depending on the selected model and material properties, the mill provides a capacity of 3.5–45 t/h and an adjustable output size of 1.6–0.045 mm, with selected configurations reaching 0.038 mm. Its closed-circuit grinding and classification system returns oversized particles for regrinding, helping maintain stable product fineness.

The final model should be selected according to the feed size, material hardness, moisture content, required powder fineness and target hourly capacity.

Key Advantages

Adjustable Powder Fineness

The variable-speed classifier and airflow system allow the finished powder size to be adjusted for different applications. Oversized particles are automatically returned to the grinding chamber for further processing.

Stable Grinding Capacity

Four models cover capacities from 3.5 to 45 t/h. Actual output depends on material hardness, feed size, moisture content and required product fineness.

Wear-Resistant Grinding Components

The grinding rollers, grinding ring and other contact components use wear-resistant materials to withstand continuous mineral powder production and reduce replacement frequency.

Closed-Circuit Dust Control

The grinding, classification and collection stages operate as a closed system. Negative-pressure airflow helps reduce powder leakage and supports a cleaner working environment when connected to a suitable dust collector.

Convenient Maintenance

The modular grinding and transmission assemblies provide easier access for inspection, lubrication and replacement of wear parts, helping reduce planned maintenance time.

Working Principle

Working Principle of Raymond Mill
After primary crushing, the material is lifted to a storage hopper and evenly fed into the grinding chamber. As the main unit rotates, the grinding rollers move outward under centrifugal force and press against the grinding ring. The shovel blades continuously lift the material into the grinding zone, where it is crushed and ground between the rollers and ring. The fan carries the ground particles to the classifier. Fine particles that meet the required size pass through the classifier and enter the cyclone collector, while oversized particles fall back into the grinding chamber for further grinding. The finished powder is discharged from the collection system, and the circulating airflow operates under negative pressure to help control dust.

Technical Parameters

Model

MTW110

MTW138

MTW175

MTW215

Ring Roller Number(pcs)

4

4

5

5

Major diameter of roller(mm)

360×190

460×240

520×280

640x 320

Inner diameter of roller (mm)

1100×190

1380×240

1750×280

2150x 320

rotary speed of main frame(r/min)

120

96

75

65

Max.Feed Size(mm)

<30

<35

<40

<50


Final size(mm)

1.6-0.045,

fineness can reach to 0.038

1.6-0.045,

fineness can reach to 0.038

1.6-0.045,

fineness can reach to 0.038

1.6-0.075,

fineness can reach to 0.038

Capacity(th)

3.5-10

6.5-15

13-35

30-45

Overall dimension(mm)

8910×6950×9010

10920×9470×10227

12275×9555×9916

14730x 10860x 10341

Main unit motor

Y280M-6

Y315M-6

Y335M2-8

Y355M2-8

Power(kw)

55

90

160

280

Rotate Speed(r/min)

980

990

990

740

Classifier speed regulating motor

(variable frequency motor)

Y132M-4

Y180M-4

Y225S-4

Y250M-4

Power()

7.5

18.5

37

55

Rotate Speed(r/min)

125~1250

1470

1470

1470

Centrifugal induced draft fan motor

Y250M-4

Y315M-4

Y315L2-4

Y355L-4

Power(kw)

55

110

200

315

Rotate Speed(r/min)

1480

1480

1480

1480

Elevator

TH200

TH250

TH315

TH400

Motor Model

Y100L2-4

Y112M-4

Y112M-4

Y160M-4

Motor Power(kw)

3

4

4

11

Rotate Speed(r/min)

1420

1430

1440

1440

Jaw Crusher

PE250×400

PE250×400

PE250×750

PE350×750

Motor Model

Y180L-6

Y180L-6

Y200L2-6

Y250M-6

Power(kw)

15

15

22

37

Rotate Speed(r/min)

970

970

970

970

Magnetic Vibrating Feeder

GZ2F

GZ3F

GZ4F

GZ5F

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Frequently Asked Questions

A Raymond Mill is suitable for dry grinding limestone, calcite, barite, dolomite, gypsum, talc, bentonite and other non-flammable minerals with Mohs hardness below 7 and moisture below 6%.

The available models provide approximately 3.5–45 t/h. Actual capacity depends on material hardness, feed size, moisture and required powder fineness.

The standard output size is adjustable from 1.6 to 0.045 mm. Selected configurations can produce powder as fine as approximately 0.038 mm.

Powder fineness is controlled by the classifier speed and system airflow. Fine particles pass through the classifier, while oversized particles return to the grinding chamber.

A Raymond Mill is mainly used for dry production of mineral powder with an integrated airflow classification system. A Ball Mill can perform wet or dry grinding and is commonly selected for ore grinding, higher-capacity circuits and materials requiring grinding media.

Provide the material name, maximum feed size, moisture content, required powder fineness, hourly capacity and project location. These conditions are used to select the mill and auxiliary equipment.

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