1、 Product Introduction of Dolomite Grinding Machine

Zhengzhou Zhida Technology combines the numerous advantages of previous grinding machinery equipment, fully considers the needs of production and processing in the new environment, and systematically upgrades the dolomite grinding equipment. Whether it is dolomite production and processing or other ore materials processing, it is more in line with the requirements of modern energy conservation, environmental protection, and large-scale and efficient production. Its working principle is that large pieces of material are crushed into small particles by a crusher and then sent to the storage bin of the grinding machine by a hoist. After passing through a vibrating feeder and an inclined feeding pipe, the material is evenly sent to the upper part of the turntable's bulk tray; The material disperses around the circumference under the action of centrifugal force and falls into the raceway of the grinding ring, where it is impacted, rolled, and ground by the ring rollers. After being processed into powder through three layers of raceway, the high-pressure fan sucks in external air into the machine through suction and brings the crushed material into the powder selection machine; The rotating impeller inside the powder selector causes the coarse material to fall back and be re ground. The fine powder that meets the requirements enters the cyclone powder collector with the airflow and is discharged by the discharge valve at the bottom, which is the finished product. The airflow with a small amount of fine dust is purified by the pulse dust collector and discharged through the fan and muffler.
The main products of dolomite ore processed by a milling machine are: dolomite sand 6-10 mesh, 10-20 mesh, 20-40 mesh, 40-80 mesh, 80-120 mesh; Dolomite ultrafine powder with 140 mesh, 325 mesh, 600 mesh, 1000 mesh, 1600 mesh.

2、 The structural composition of dolomite mill

The complete configuration of the dolomite mill includes a hammer crusher, bucket elevator, storage bin, vibrating feeder, mill host, variable frequency classifier, dual cyclone powder collector, pulse dust removal system, high-pressure fan, air compressor, and electrical control system.

3、 Working principle of dolomite mill:

1. During operation, the main motor of the grinding machine drives the spindle and turntable to rotate through a reducer, and the roller pins on the edge of the turntable drive dozens of grinding rollers to roll in the grinding ring raceway.
2. The raw mineral material of dolomite is crushed into small particles by a hammer crusher and then sent to the storage bin by a hoist. After passing through a vibrating feeder and an inclined feeding pipe, the dolomite particles are evenly sent to the upper part of the turntable's loose material tray.

3. Under the action of centrifugal force, dolomite particles scatter towards the periphery of the circle and fall into the raceway of the grinding ring, where they are impacted, rolled, and ground by the ring rollers. After three layers of processing in the raceway, they become dolomite powder. The high-pressure fan sucks in external air through suction and selects the crushed dolomite powder into the powder mill.

4. The rotating impeller inside the powder selector causes the coarse dolomite powder to fall back and be re ground. The fine powder that meets the requirements enters the cyclone powder collector with the airflow and is discharged through the discharge valve at the bottom, which is the final ultrafine dolomite powder. The airflow with a small amount of fine dust is purified by the pulse dust collector and discharged through the fan and muffler.

4、 Performance characteristics of dolomite mill:

Efficient:

When the fineness of the finished dolomite powder and the power of the electric motor are the same, the output of the dolomite mill is more than twice that of the air flow mill, stirring mill, and ball mill.

Long service life of vulnerable parts:

The grinding roller and grinding ring are forged from special materials, greatly improving their durability. Under the same fineness of materials and finished products, the service life of vulnerable parts of dolomite mill is 2-3 times longer than that of impact crusher and turbine crusher, generally reaching more than one year; This type of grinding machine can have a service life of 2-5 years when processing calcium carbonate and calcite.

High safety and reliability:

Due to the absence of rolling bearings and screws in the grinding chamber, there is no problem of bearings and their seals being vulnerable, or the machine being damaged due to loose screws.

High product fineness:

The fineness of the finished dolomite powder processed by this grinding machine can reach D97 ≤ 5 μ m in one go.

Low environmental pollution:

The use of environmentally friendly pulse dust collectors and mufflers in grinding equipment greatly reduces dust and noise pollution to the surrounding environment.

Main technical parameters:

Note: The output may vary depending on the material.

Service Commitment

Adhere to the "three in one" service concept of pre-sales, in sales, and after-sales:
1、 Pre sales service:
Provide users with product performance introductions, quality assurance system certificates, company profiles, and other materials to fully understand Tongli's products, production line solutions, and technical advantages. Provide technical consulting services to users and tailor production line solutions for customers.
2、 In sales service: that is, to let users know and confidently purchase products from Tongli
（1） Inspection
Before leaving the factory, the product undergoes various performance tests at the testing center; Provide customers with product testing data and test reports.
（2） Training
In order to enable users to better operate, maintain, and manage equipment, the company will arrange experienced engineers with more than 20 years of experience to provide training and guidance to technical personnel.
（3） Installation
The company appoints engineering and technical personnel with more than ten years of installation and commissioning experience to the site for installation and trial operation work, and submits test data; After the customer's acceptance is qualified, regular inspection services (including maintenance and upkeep) will be conducted on the product.
3、 After sales service:
Provide maintenance guidance within 2 hours after receiving user's fault handling requirements and arrive at the scene within 24 hours. During the warranty period, guide users twice a month on product maintenance and upkeep. Fifteen days before the end of the warranty period, assign dedicated personnel to perform product maintenance and upkeep for users.

Engineering case