Adjustable Industrial Dolomite Grinder Dolomite Powder Mill 80-400 Mesh Vertical Grinding Machine

Adjustable Industrial Dolomite Grinder Dolomite Powder Mill (80-400 Mesh) | Vertical Grinding Machine

Description

Dolomite Vertical Roller Mill - Material Versatility & Adaptability

1. Multi-Material Compatibility

The dolomite vertical roller mill (VRM) is engineered for broad applicability, efficiently processing various non-metallic minerals beyond dolomite, including:

• Calcite

• Marble

• Limestone

• Heavy calcium carbonate (HCC)

• Talc

• Barite

This universal grinding system meets diverse industrial demands for ultra-fine powder production (80-3000 mesh), offering a one-stop solution for multi-material processing needs.

2. Moisture Tolerance

• Handles materials with up to 6% moisture content without pre-drying.

• Eliminates excessive drying steps for slightly wet dolomite, enhancing production flexibility and energy efficiency.

• Maintains stable grinding performance even with humid feedstocks.

Dolomite Vertical Mill Key Advantages:
* Reduced preprocessing costs
* Faster production cycles
* Lower thermal energy consumption

Dolomite Roller Mill Working principle: The electric motor drives the grinding disc to rotate through a reducer, and the material falls into the center of the grinding disc from the feeding port. At the same time, hot air enters the grinding chamber from the air inlet. Under the action of centrifugal force, the material moves towards the edge of the grinding disc and is crushed by the grinding roller when passing through the circular groove on the grinding disc. The crushed material is carried up by the high-speed airflow at the edge of the grinding disc, and large particles directly fall onto the grinding disc for re grinding. When the material in the airflow passes through the dynamic and static separator, under the action of the rotating rotor, the coarse powder falls onto the grinding disc for re grinding, and qualified fine powder is discharged with the airflow, Collect in the powder collection device, which is the product. Materials containing moisture are dried during contact with hot gases to achieve the required product moisture.

Technical Parameters Table

Re:The data based on Mohs'hardness 3-4 material
The product fineness can reach 10 um(1250 meshes)

The Three-Stage Processing System of Vertical Roller Mills

1. Raw Material Pre-Treatment: Precision Crushing Process

The dolomite VRM process begins with scientifically controlled crushing. Using impact crushers or cone crushers for intermediate crushing, the material is reduced to 10–50 mm particles. Special attention must be paid to dolomite’s Mohs hardness of 3.5–4, as excessive iron or manganese content may hinder grinding efficiency. Modern crushing systems ensure continuous material flow via synchronized vibrating feeders and bucket elevators, delivering uniformly sized feedstock to the VRM.

2. Core Grinding: Sophisticated VRM Mechanism

The VRM’s core features a multi-tiered grinding track design. Dozens of alloy-forged grinding rollers rotate along the grinding ring under centrifugal force, applying triple-action forces: impact, rolling, and shear. A high-pressure blower generates airflow (15–20 m/s) to transport crushed material to the dynamic classifier, where adjustable rotor speed precisely separates particles between 80–800 mesh. Multi-stage classification achieves ultra-fine powders up to 3,000 mesh.

In this closed-loop system:

• Coarse particles automatically recycle for regrinding.

• Qualified fines are collected via cyclone separators.

• Pulse-jet dust collectors capture 99.9% of particulates, maintaining workshop noise below 75 dB.

3. Product Refinement: Dual Control of Particle Size & Purity

Water treatment is critical for enhancing product quality. Post-sintering, materials undergo leaching, filtration, and drying to remove impurities, achieving industrial-grade calcium carbonate purity (≥99%).

The VRM system adapts to industry-specific demands:

• Construction materials: Single-tier grinding for 140–325 mesh powders.

• Ceramics: Multi-tier grinding + secondary classification for 1,600 mesh ultrafine powders.

• High-iron dolomite: Automatic roller pressure reduction prevents metallic contamination.
  

• Project Case:

• **Case Company:** An agricultural fertilizer company in Southeast Asia
  **Application Scenario:** Dolomite powder used as an acid soil conditioner, requiring a fineness of 100-325 mesh and purity >95%.
  **Achievements:**
  - The vertical mill system achieves closed-circuit production, ensuring uniform particle size distribution and low over-grinding rate.
  - The entire production line is equipped with dust removal and noise reduction designs, meeting EU environmental standards.

Hefei Hengcheng Industrial Equipment Technology Co., Ltd. (hereinafter referred to as Hengcheng) was established in 2008. The company is located in Hefei, Anhui, a famous science and education city in China. It is a national-level high-tech enterprise and technology-based enterprise specializing in powder industry technology and equipment R&D, manufacturing, sales and service. The company has passed the ISO9001 international quality system certification.

Our company's main products : Vertical Coal Mill,Limestone Vertical Mill,Vertical Raw Mill,Slag Grinding Mill,Gypsum Grinding Mill,Calcite Mill,VRM Cement Mill,Bentonite Grinding Mill,Dolomite Grinding Mill,Bauxite Grinding Mill and pneumatic conveying system equipment. Among them, the grinding system equipment includes HVM vertical mill, rotary air lock feeder, and pressure-resistant sealed metering feeder. The products of the pneumatic conveying system equipment include PCD type positive pressure dense phase pneumatic conveying bin-type pump, PJP type positive pressure dilute phase pneumatic conveying jet pump, and HL type high-efficiency pneumatic fluidized blanking and blockage removal device.

Since its establishment, the company has always adhered to the development concept of "Based on Industry and Equipped in the World", and is committed to providing domestic and foreign customers with a complete set of system solutions in the powder industry field covering powder industry preparation, engineering design, engineering general contracting and technical services and consulting. Program. The company's core technology products have been widely used in the powder processing fields of building materials, metallurgy, chemical industry, heat, energy, electric power, lime kiln, pellets, mineral processing (including metal and non-metallic minerals), port warehousing and logistics and other industries.

The company has a professional technical team composed of high-quality talents such as experts and scholars, senior engineers and postgraduates who have won the National Science and Technology Progress Award and participated in the formulation of relevant industry standards. Practical experience, has rich engineering practice experience and theoretical basis. At the same time, the company has established technical cooperation and exchange relations with a number of key universities, absorbed the cutting-edge technologies in the powder industry at home and abroad, and closely followed the development trend of the powder industry, so as to provide customers with advanced and reliable powder equipment and various professional services. Technical Services.

Aiming at the two important links of powder preparation and powder transportation in the powder industry, the company has deeply studied the physical and chemical properties of various types of powder materials in different industries and fields after years of technical accumulation and a large number of engineering practices. On this basis, we have developed powder processing technology and complete sets of equipment that are highly targeted, safe, reliable, efficient and energy-saving.

We have a professional technical team composed of experts and scholars, senior engineers and postgraduates who have won the National Science and Technology Progress Award and participated in the formulation of relevant industry standards. All team members have more than ten years of experience in large state-owned design institutes in the industry Experience, has a wealth of engineering practice experience and theoretical basis. It can provide professional and systematic engineering design services for customers in various industries involving grinding system and pneumatic conveying system engineering, and provide a complete set of solutions in the field of powder engineering.

We have undertaken a large number of domestic and foreign (currently the company exported to Indonesia, Vietnam, the Philippines, Pakistan, Egypt, Yemen, Saudi Arabia, Congo and other countries and regions in the world) the metallurgical industry limestone powder milling and pneumatic powder conveying projects and coal powder preparation And pneumatic conveying project, lime kiln industry pulverizing and pneumatic powder conveying project, coal powder preparation and pneumatic conveying project, cement industry grinding system and conveying system renovation project and other engineering design projects, the design of the engineering project equipment selection is reasonable, The design scheme is scientific and reasonable, concise, practical, and cost-effective, all of which have reached or exceeded the expected indicators, and have been highly recognized and praised by users. The project has won the company's reputation in the industry.

Our goal: to sell the best machines at the best prices with industry-leading customer service. We personally know each of our customers, always adhering to the development concept of "Focus On Powder,Equipping The World", we are committed to providing powder industry services covering powder industry preparation, engineering design, engineering general contracting and technical services and consulting for customers around the world. A complete set of system solutions in the field.

For more detailed information on our Powder Industry Technology and Equipment, please do not hesitate to contact us! We welcome your inquiries, and look forward to working with you.