Raymond Mill

Raymond Mill is a powder processing equipment widely used in mining, building materials, chemical industry and other industries. It is mainly used for efficient grinding of non-flammable and explosive materials with Mohs hardness ≤ 9.3 and humidity below 6%. The finished product particle size range is usually between 80-325 mesh (0.045-0.18mm). Its core function is to crush bulk materials into fine powder to meet the requirements of powder fineness and uniformity in industrial production.

Technical Features

1. High efficiency and energy saving

• It adopts a three-dimensional structure design, occupies a small area, has a highly integrated systematic production process (crushing → grinding → grading → powder collection), and reduces energy consumption by 30%-40% compared with traditional ball mills.

2. High grading accuracy

• The analyzer adopts variable frequency speed regulation technology, which can accurately adjust the particle size of the finished product (flexibly adjusted within the range of 80-325 mesh), with concentrated particle distribution and uniform fineness.

3. Strong reliability

• Key components (grinding roller, grinding ring) are made of high manganese steel or wear-resistant alloy materials with long service life; the transmission system is sealed to avoid dust intrusion and reduce failure rate.

4. High degree of automation

• Equipped with PLC control system, it can realize automatic adjustment of feed amount, air volume and classification speed, with easy operation and good stability.

5. Environmentally friendly and low noise

• It operates in a fully enclosed negative pressure environment and is equipped with a high-efficiency dust removal device. The dust emission concentration is lower than the national environmental protection standard. The equipment has low vibration and noise.

6. Strong adaptability

• It can process hundreds of materials such as limestone, calcite, barite, bentonite, gypsum, etc., and is particularly efficient for materials with medium and low hardness.

Typical Application Areas

• Mining: Powdering of metal and non-metallic minerals (such as calcium carbonate and talcum powder).

• Building materials: preparation of cement raw materials, coal powder and ceramic raw materials.

• Chemical industry: ultrafine grinding of pesticides, fertilizers, coating fillers.

• Metallurgy: processing of slag powder and refractory materials.

The working process of Raymond mill is based on the combination of mechanical rolling and wind classification. The specific steps are as follows:

1. Feeding and grinding

The material is evenly fed into the main mill through the feeder, and is thrown between the grinding roller and the grinding ring under the action of centrifugal force. It is crushed gradually by the rolling and shearing action of the grinding roller.

2. Grading and circulation

The crushed powder rises with the air flow to the top analyzer (powder classifier). The analyzer adjusts the classification accuracy by rotating blades. The powder that meets the fineness requirements enters the subsequent collection system, and the coarse powder is thrown back to the grinding disc for re-grinding.

3. Collection and dust removal

Qualified fine powder is collected by cyclone separator, and the dust-laden airflow is purified by pulse dust collector before being discharged, ensuring that environmental protection standards are met. Raymond mill structure diagram

Model		Roller	Roll Dia. (mm)	Roll Ring Size (mm)	Max. Input Size (mm)	Output Size (mm)	Capacity t/h	Power (Kw)	Dimension
3R	1510	3	150*100	570*100	15	0.125-0.044	0.8-10	7.5	320012003800
	2115	3	210*150	630*150	15	0.125-0.044	1-12	15	350033004500
	2615	3	260*150	780*150	20	0.125-0.044	1.5-20	18.5	465036005100
	2715	3	270*150	830*150	20	0.125-0.044	2-28	22	470036005100
	3015	3	300*150	875*150	25	0.125-0.044	2-35	30	530041005200
4R	3016	4	300*160	890*160	25	0.125-0.044	3-36	30	540041005200
	3216	4	320*160	970*160	25	0.125*0.044	4-45	37	710059007900
	3220	4	320*200	970*200	25	0.125-0.044	4-55	45	990058001058
5R	4119	5	410*190	1270*190	30	0.613-0.044	8-60	75	920072509700