Vertical Grinding Mill

Production Capacity: 50-250t/h
Feeding Size: ≤1100mm
Output Size: 0.022-0.180mm

Vertical Grinding Mill for Sale

Vertical grinding mill also known as vertical roller mill, is the important auxiliary equipment to be used after calcination in lime production line. Responsible for grinding the calcined limestone into the granularity required by the customer. Compared with the raymond mill, the vertical grinding mill has higher grinding accuracy, suitable for fine grinding of material. The production capacity of the vertical grinding mill is up to 50-250t/d, ideal for large-scale production projects. The vertical grinding mill adopts the latest technology, integrating drying, grinding, and separation, and has high production efficiency. Not only can it be used to grind limestone, but also slag, cement, coal fly ash, raw materials, and many other raw materials. AGICO’s entire system of a vertical grinding mill is low vibration, low noise, fully enclosed, full negative pressure operation, no dust spillage, and the realization of a clean room. Superior to the environmental requirements of various places to realize green production.

Advantages of Vertical Grinding Mill

Low Costs

The vertical grinding mill adopts the latest technology, integrating drying, grinding, and separation. No need for additional drying equipment, powder processing equipment, etc. And has automatic control systems, and remote control is possible. Effectively improves productivity and reduces labor costs. Vertical grinding mill has a small footprint and reduces site costs.

Environmentally Friendly

AGICO’s entire system of a vertical grinding mill is low vibration, low noise, fully enclosed, full negative pressure operation, no dust spillage, and Realization of a clean room. In the working, a certain amount of water will be added to the raw material, the purpose is energy-saving and environmentally friendly.

Good Quality of Products

The vertical grinding mill uses a dynamic powder separator, it can adjust the fineness of the finished product according to the customer’s requirements. Ensure the uniformity of the finished product. Vertical grinding mill has a strong drying capacity, provides hot air up to 450℃, and the air temperature can be adjustable. It can dry the material with 15% water content.

High Efficiency

Vertical grinding mill Adopts roller milling, the grinding efficiency is higher. Compared with the limestone ball mill, the energy consumption will be saved 30%-50%. The amount of metal wear is generally only 5-15g/t and in some cases only 3-5g/t. So the equipment has low maintenance frequency. Effective increase in equipment uptime.

Important Parts of Vertical Grinding Mill

Grinding Roller

Grinding Table

Classifier

The grinding roller is one of the core components of a vertical grinding mill. A vertical grinding mill is usually equipped with 2-4 grinding rollers., distributed in the grinding table. They are made of high-strength wear-resistant materials. Under the action of the hydraulic system, fits tightly to the grinding table and extrusion and shearing of materials.

The grinding table offers a grinding platform for a vertical grinding mill. The grinding table is rotated by a motor, with grinding rollers to complete the grinding of the material. It is designed with grooves on the surface to increase the grinding efficiency.

A Classifier is used for classifying materials after grinding. It utilizes a dynamic grading system, we can change the particle size of the finished product through adjustment of impeller speed. Separation of fine powders that meet particle size requirements using an air stream. Those that do not meet the requirements continue to return to the grinding table for grinding.

The hydraulic system is used to apply pressure to the grinding roller and grinding table. A hydraulic cylinder has a nitrogen bag to absorption of vibrations generated during the operation of a vertical grinding mill.

The ventilation system offers hot air for the material to dry. Hot air from hot air furnace or other equipment. It can effectively reduce the moisture in the material, and ensure the grinding efficiency and finished product quality of a vertical grinding mill.

How the Vertical Grinding Mill Works

1. Feed: The material is sent to the heart in a grinding table by vibrating feeder or screw feeder. The grinding table is rotated by the main motor drive, The centrifugal force generated throws the material towards the edge of the grinding table and distributes it to the surface of the grinding table.
2. Dry: When the material enters the vertical grinding mill, the hot air from the hot stove is in full contact with it, drying the material.
3. Grind: Under the action of the hydraulic system, the grinding roller is close to the grinding table and applies pressure to the material to crush and grind it. As the material passes through the annular grooves on the grinding disk, it is crushed by the grinding rollers.
4. Classification: The ground material follows the airflow and is fed into the classifier at the top of the vertical grinding mill. You can adjust the rotational speed of the impeller according to your requirements. The fines that meet the fineness requirements enter the collection system through the classifier. Coarse powder that does not meet the requirements is returned to the grinding table for further grinding.

Leading Vertical Roller Mill Manufacturers

The vertical roller mill manufacturers with many years of experience and specialize in providing highly efficient and energy-saving vertical grinding mill. Innovative design concept with international standards.
AGICO offers customized services according to your material characteristics and production capacity requirements. Ensure your vertical grinding mill can perform at its best.
We offer operation and maintenance training, on-site installation and commissioning, trial operation, and other services to ensure your vertical grinding mill can stable operation.
Our vertical grinding mill uses highly abrasion-resistant materials and first-class craftsmanship. It has a longer service life and wins the trust of customers in many countries.

Factors Affecting the Efficiency of a Vertical Grinding Mill

Hardness of Raw Materials

The harder the material, the more difficult the grinding, the lower the efficiency, and it also accelerates the wear of the grinding roller and the grinding table. We should choose the suitable hardness of materials for the vertical grinding mill.

Grinding Roller and Grinding Table

The grinding roller and grinding table as the core components of a vertical grinding mill. If the wear and tear is serious, it will directly affect the productivity of the equipment. So we should regular inspection and maintenance for worn parts.

Water Content of Raw Materials

Excessive water content of the raw material and insufficient drying can cause the material to stick to the grinding table. The grinding roller cannot grind effectively, resulting in excessive vibration or shutdown of the vertical grinding mill.

Air Volume and Airflow

The airflow of a vertical grinding mil is too small, can lead to material stagnation, and reduce the efficiency of material transportation. The airflow of a vertical grinding mil is excessive, it may lead to the carryover of substandard coarse grains, resulting in a decrease in the quality of the finished product.

Parameters of Vertical Grinding Mill

Models	Diameter of millstone(mm)	Median diameter of roller (mm)	Quantity of roller	Standard installed power	Standard ability(t/h)
AG 30.31	3000	1600	3	1350	55-60
AG 32.31	3200	1700	3	1600	65-80
AG 35.41	3500	1800	4	1800	85-100
AG 40.41	4000	1900	4	2500	115-125
AG 43.41	4300	2120	4	3000	135-145
AG 46.41	4600	2240	4	3350	150-160
AG 48.41	4800	2240	4	3350	170-180
AG 50.41	5000	2360	4	3900	190-200
AG 53.41	5300	2500	4	4600	210-230
AG 56.61	5600	2500	6	5300	210-230