• Product Details
Product Description

The CRM series mill is used for grinding non-combustible and explosion-proof minerals, the hardness of which on the Mohs scale does not exceed 6, and the moisture content does not exceed 3%. This mill is used to produce ultrafine powdery materials in the medical, chemical industry and can produce a product with a size of 5-47 microns (325-2500 mesh) with a feed size of 15-20 mm. Ring mills, like pendulum mills, are used as part of plant. The plant includes: hammer crusher for preliminary crushing, bucket elevator, intermediate hopper, vibrating feeder, HGM mill with built-in classifier, cyclone unit, pulse-type atmospheric filter, exhaust fan, set of gas ducts. The process is monitored using various sensors that monitor parameters in actual time, which guarantees maximum production efficiency of the equipment. The process is controlled using a control cabinet. The finished product from the collection of fine powder of the cyclone-precipitator and the impulse filter is sent by a screw conveyor to further technological operations or is packaged in various containers (valve bags, big bags, etc.).


CRM Ring Mill Working Principle

The material of fraction 0-20 mm is fed into the grinding chamber of the mill, which is a roller-ring grinding unit. Direct grinding (grinding) of the material occurs between the rollers in the cage due to squeezing and abrasion of the product. After grinding, the crushed material enters the upper part of the mill along with the air flow created by a fan or a special aspiration filter. Simultaneously with the movement of the material, it is partially dried. The material is then classified using a separator built into the top of the mill and calibrated according to the required particle size distribution. The product in the air flow is separated due to the action of oppositely directed forces on the particles - the force of gravity and the lifting force provided by the air flow. The larger particles are more influenced by the force of gravity, under the influence of which the material is returned to the final grinding, the smaller (lighter) fraction is carried away by the air flow into the cyclone-precipitator through the air intake. The fineness of grinding of the finished product is regulated by changing the speed of the classifier impeller by changing the speed of the engine.

Performance Advantage

High efficiency and energy saving

Under the condition of the same finished product fineness and motor power, the output is more than double that of jet mill, stirring mill and ball mill.

Long service life of wearing parts

Grinding rollers and grinding rings are forged with special materials, which greatly improves the utilization. Generally, it can last for more than one year. When processing calcium carbonate and calcite, the service life can reach 2-5 years.

High safety and reliability

Because there is no rolling bearing and no screw in the grinding chamber, there is no problem that the bearing and its seals are easily damaged, and there is no problem that the screw is easy to loosen and damage the machine.

Environmentally friendly and clean

The pulse dust collector is used to capture dust, and the muffler is used to reduce noise, which is environmentally friendly and clean.

Technical Specifications





Rotor diameter, mm




Rings amount




Number of rollers




Shaft rotation speed, rpm




Feed size, mm




Final product size, micron / mesh

5-47/ 325-2500

Productivity, kg / h




power, kw




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User Feedback

User Case

Transport Delivery

CORINMAC has professional logistics and transportation partners who have cooperated for more than 10 years, providing door-to-door equipment delivery services.

Transport To Customer Site

Installation And Commissioning

CORINMAC provides on-site installation and commissioning services. We can send professional engineers to your site according to your requirements and train on-site personnel to operate the equipment. We can also provide video installation guidance services.

Installation Steps Guidance Drawing

Company Production Ability


  • We have never been engaged in mortar production, don't have experience, and do not understand mortar production lines. Can you provide technical and process guidance?
    Yes, we have rich experience in mortar production process and production line technology, and we will customize the production plant according to your needs and provide a full range of project guidance. We can design the Production Line Layout and Site Planning according to the size of your work shop, and provide technical support for mortar formulas.
  • Are you a Factory, a Design company, or a Trading company?
    We are a factory with our own mechanical design engineers and project design engineers, and have a production workshop of 10,000 square meters. 
    We can provide customized solution design according to customer needs, and full-process services such as early project communication, scheme design, equipment selection, equipment production, site planning, equipment layout, transportation and delivery, installation and commissioning.
  • Can I visit your factory?
    Welcome to visit our factory, we can provide you the invitation letter required for visa application. We will meet you at the airport or station and provide professional business reception services.
  • What is the positioning and cost performance of your products?
    We have professional engineers, skilled production workers, high-standardd quality inspection process, and sales and after-sales service teams with barrier-free communication. We can assemble and test all the equipment and pack them carefully before delivery. Maybe our prices is not the lowest, but we are definitely your most suitable and trustworthy partner.
  • What certificates and certifications do you have?
    We have ISO9001 quality management system certification. And we can also provide relevant certification according to the requirements of the customer's country, such as: SGS, EAC certification, etc.
  • Can you produce customized equipment according to our requirements?
    We can produce customized products according to customer needs. The users of the equipment are more aware of the problems in the use of the equipment, so we humbly accept the customer's suggestions and improve the equipment.
  • How long is the delivery time and shipping time?
    According to the production task, the general equipment production period is about 20-30 working days. After the equipment production is completed, you can come to our factory in person, send someone to our factory, or ask we to provide photos and videos of the finished product for inspection.
    The transportation methods include railway, sea, sea-rail combined transportation, etc. The transport time of different countries is different: Southeast Asia: 7-15 days, Central Asia: 20-30 days, Middle East: 20-40 days, Africa & America countries: 30-50 days, Russia and European countries: 25-40 days. We will provide photos and videos of equipment loading throughout the delivery process, as well as official customs clearance information.
  • How long is warranty period, how to guarantee after-sales service, and how to solve equipment quality problems?
    The warranty period of our equipment is 12 months, but it usually takes about 30 days (1 month) to transport from China to the customer's site, and installation and commissioning time also takes about 30 days (1 month). Therefore, our warranty period for foreign customers is extended to 18 months from the date of delivery (except for wearing parts). We will provide customers with necessary wearing parts when delivering the goods. If it is necessary to replace the parts, we will send the parts to the customer's site by air, and all cost will be borne by us.
  • Can engineers be sent to our site for installation and training?
    We can send experienced engineers to the customer's site to guide equipment installation, debug the production line until it is put into production, we will also provide installation instructions, layout drawings, assembly drawings, etc. If the customer has his own engineer, he can install the equipment according to the installation steps drawings we provide, and we can also guide the installtion with online videos.
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