CRQM Ball Mill

Information Introduction of CRQM Ball Mill

CRQM Ball Mill is a traditional grinding equipment developed and manufactured by Cronus Machinery in its early stage. Compared with Raymond mill and other equipment, its energy consumption is higher, but it has profound mechanical heritage, mature technology, and extremely strong adaptability. It combines both dry and wet grinding processes and can grind various minerals with Mohs hardness ≤ 9. It is widely used in mining (mineral processing), chemical, metallurgical, building materials, electric power, environmental protection and many other fields.

With the continuous development of the powder processing industry towards refinement and high efficiency, modern ball milling processes are generally combined with airflow classifiers to form an efficient closed-loop system (ball mill classification production line), which can stably and economically produce ultra-fine powder of 800~1250 mesh.

Features and Advantages of CRQM Ball Mill

CRQM Ball Mill mainly adopts two grinding processes: dry and wet. It has strong adaptability and a wide range of materials. It can process coarse powder, medium-fine powder, fine powder, ultra-fine powder and even ultra-fine powder. As one of the earliest traditional grinding equipment, its mechanical technology is mature. It can be flexibly equipped with classification equipment to form a ball mill classification production line, with accurate and controllable product particle size, and can be customized according to customer needs.

Dry Ball Mill

Dry ball mill grinds materials into dry powder without adding water. It is usually combined with an airflow classifier to form a ball mill classification production line. It is suitable for new energy battery materials, high-end ceramics, medicine, food additives and other fields.

Main Host System: The cylinder is made of high-quality steel plate coil, lined with wear-resistant liners such as high manganese steel, rubber, ceramics, etc. It adopts grate plate discharge, and the cylinder does not require cooling equipment.

Grinding System: Uses grinding media such as steel balls, steel segments, ceramic balls of different diameters. Grinding aids are quantitatively sprayed through a metering pump, thereby improving grinding efficiency and powder quality.

Classification System: Uses an airflow classifier to form an efficient closed-loop system, equipped with sensors and a control system to monitor operating parameters such as temperature, wind pressure, and air volume in real time.

Collection System: Consists of cyclone collector and pulse bag dust collector. The total product collection rate is ≥99.9%, and the waste gas emission is ≤10mg/m³. The silo is equipped with a level gauge to ensure production process automation.

Wet Ball Mill

Wet ball mill injects water during the mineral processing and grinds in water to produce slurry. It is suitable for industries that directly use slurry such as ceramic glazes, mineral pigments, coal water slurry, etc. It can also be used to produce filter cake after dewatering the raw material for dry powder production.

Main Host System: The cylinder is made of high-quality steel plate coil, lined with wear-resistant liners. It adopts overflow or grid type discharge to discharge the slurry. The cylinder is cooled by process water, no additional cooling equipment is needed.

Grinding System: Grinds in water, using grinding media such as steel balls, ceramic balls of different diameters. Water-based dispersants or grinding aids are added directly into the mill or into the circulating slurry to improve grinding efficiency and slurry stability.

Classification System: Uses hydrocyclones or wet vibrating screens for classification, forming a slurry closed-loop circulation.

Dewatering System: Dewaters the slurry into filter cake through equipment such as pressure filters or centrifuges, achieving solid-liquid separation and recovering and purifying wastewater.

Drying System: The moisture content of the filter cake is reduced to dry powder with a moisture content of <1% by a dryer, and the dry powder is cooled, dispersed and collected as finished powder products.

Process Flow of CRQM Ball Mill

Dry Ball Mill Classification Production Line

Raw Material → Dry Ball Mill → Air Classifier → Cyclone Collector → Pulse Bag Dust Collector → Finished Product Packaging

Dry raw material (moisture content usually <1%) is fed into the ball mill through a quantitative feeder. As the cylinder rotates, the material is lifted with the balls to a certain height and then falls, causing impact crushing. Grinding aids can be precisely sprayed through a metering pump to improve efficiency, prevent agglomeration, and enhance powder performance. The discharged powder is pneumatically conveyed to an air classifier for separation. Unqualified coarse powder is returned to the ball mill inlet for re-grinding, while qualified powder flows with the airflow into the collection system, forming a closed loop. The cyclone collector separates and collects most of the qualified powder, and the pulse bag dust collector recovers and purifies the dust. The finished product silo is equipped with a level gauge to achieve automatic switching or alarm when full, ensuring full-process automation.

Wet Ball Mill Classification Production Line

Raw Material → Wet Ball Mill → Hydrocyclone (Classification) → Dewatering Equipment → Filter Cake → Drying Equipment → Powder → Finished Product Packaging

Raw material and process water are mixed in proportion and fed into the wet ball mill. As the cylinder rotates, the material and balls are ground in water to form slurry. The ground slurry is sent to a hydrocyclone for classification and screening. Fine particles are discharged from the overflow and can be used directly after collection. Coarse particles are discharged from the underflow and returned to the ball mill, forming a closed loop.

If filter cake production is required, the slurry is dewatered by a pressure filter or centrifuge to produce filter cake with a moisture content of 10%~25%. The dewatering wastewater can be treated and recycled.

If dry powder product is required, the filter cake can be further dried to reduce the moisture content to <1%, and then dispersed and collected to obtain finished dry powder.

Application Scenarios of CRQM Ball Mill

Technical Parameters of CRQM Ball Mill

Frequently Asked Questions about Ball Mills

How to choose between dry ball mill and wet ball mill?

Dry Ball Mill: No dehydration and drying process required, suitable for applications sensitive to moisture or areas with water scarcity. It is usually combined with an airflow classifier to form a ball mill classification production line for processing 800~1250 mesh ultra-fine powder, suitable for new energy battery materials, high-end ceramics, medicine, food additives and other fields.

Wet Ball Mill: Compared to dry ball mills, it has higher output, lower energy consumption, less dust, and more uniform product particle size. It is widely used in metal ore beneficiation, ceramic raw materials, coal water slurry and other industries.

What is the difference between a ball mill and a Raymond mill?

Ball Mill: A universal equipment, combining both dry and wet grinding processes, with extremely strong adaptability. It can meet the powder processing requirements from coarse powder to ultra-fine powder of different fineness, but its energy consumption is higher compared to Raymond mill.

Raymond Mill: Dry grinding equipment, with lower energy consumption compared to ball mills. It is suitable for processing medium-fine powder of 80~400 mesh, but not suitable for processing coarse powder and ultra-fine powder.

How to reduce the energy consumption of a ball mill?

Scientifically proportion steel balls and steel segments of different diameters according to the material particle size and finished product fineness, optimize the grinding media, control the cylinder filling rate (usually 25%~40% of the cylinder volume), adjust the cylinder speed to 65%~78%, and equip with efficient classification equipment and pre-crushing equipment.

Can a ball mill operate without a classifier?

Yes, a ball mill can operate without a classifier. This is the open-circuit system of the ball mill, where the material passes through the ball mill once and is discharged as finished product. The process is simple, with low investment and easy operation, but it has disadvantages such as low efficiency, high energy consumption, and uneven particle size. Serious over-grinding occurs due to the inability to separate. It is only used in coarse grinding and special scenarios. Modern advanced grinding processes generally adopt a closed-loop system (ball mill classification production line) composed of a ball mill and a classifier (especially an airflow classifier).