Dolomite Grinding Machine / Vertical Roller Mill For Processing 200-1250 Mesh Ultrafine Powder

Dolomite Grinding Machine Manufacturer / Vertical Roller Mill For Processing 200-1250 Mesh Ultrafine Powder

1, Introduction to Vertical Dolomite Mill

Dolomite grinding machine - Dolomite grinding equipment can not only process mica, but also process ultrafine powders of non flammable and explosive brittle materials with medium to low hardness and Mohs hardness ≤ 6 levels, such as calcite, chalk, limestone, dolomite, carbon black, kaolin, bentonite, talcum, mica, magnesite, illite, pyrophyllite, vermiculite, sepiolite, attapulgite, rectorite, diatomaceous earth, barite, gypsum, alum, etc More than 100 types of materials, including graphite, fluorite, phosphate rock, potassium ore, pumice, etc

2,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.

3,Advantages of vertical mills:
1. The grinding efficiency is high, and the vertical mill uses grinding rollers and material beds to crush and grind materials. The energy consumption is low, and the power consumption of the grinding system is reduced by 20-30% compared to the ball milling system. As the humidity of the raw materials increases, the energy-saving effect is more significant.
2. Strong drying ability, vertical mills use gas conveying materials, and can control the inlet air temperature when grinding materials with high moisture content, so that the product reaches the final water powder. In the vertical mill, materials with a moisture content of up to 12-15% can be dried. Even for drying ball mills, only materials with a moisture content of 3-4% can be dried.
3. The particle size of the incoming material is large, up to about 5% of the diameter of the grinding roller, generally ranging from 40-100 millimeters. Therefore, large and medium-sized vertical mills can eliminate secondary crushing.
4. The product has stable chemical composition and uniform particle grading. Due to the fact that the material stays in the vertical mill for only 2-3 minutes, while the ball mill lasts 15-20 minutes, the chemical composition of the product can be quickly measured and corrected when using vertical mill powder. The fluctuation of the product's chemical composition is small, which is conducive to homogenization. In addition, qualified products in the vertical mill can be separated in a timely manner, avoiding repeated grinding, and the particle size of the products is uniform and consistent, which is conducive to calcination.
5. The process flow is simple, the building area is small, and the occupied space is small. There is a separator inside the vertical mill, and there is no need for a powder concentrator or elevator. The dust containing gas from the mill can be directly collected into the dust collector as a product. Therefore, the process is simple, the layout is compact, and the building area is only 70% of the ball mill system. The building space is about 50-60% of the ball mill.
6. Low noise, less dust, clean operating environment, vertical mill in operation, without direct contact between the grinding roller and the grinding disc, without the collision of steel balls and the impact sound of steel balls hitting the lining plate during ball milling. The ancient noise is low, about 20-25 decibels lower than that of ball milling. In addition, the vertical mill is sealed as a whole, and the system operates under negative pressure, resulting in less dust and a clean environment that meets environmental requirements.
7. Low metal loss, long service life of the lining plate and grinding roller, high utilization rate. Due to the lack of direct contact and collision between metal and metal during the operation of the vertical mill, the wear of accessories is minimal and the service life is long. The metal wear per unit product is generally 5-10 grams/ton. For medium hardness materials, the service life of the grinding roller and lining plate can reach about 8000 hours.

Technical Parameters Table

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

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.