Power Plant Coal Mill Blast Furnace Injection Coal Powder Vertical Mill

Coal Vertical Mill Power Plant Coal Mill Blast Furnace Injection Coal Powder Vertical Mill
Product Introduction:
The coal vertical mill is the main equipment in the coal pulverization system, which is used to grind raw coal into fine coal and dry it. The coal grinding process is the process of coal being crushed and its surface area continuously increasing. The principles of coal grinding in a coal mill mainly include impact, compression, and grinding. The impact principle is to use the impact force generated by the relative movement of raw coal and the coal grinding components; The squeezing principle utilizes the pressure effect of coal between the surfaces of two grinding components under stress; The grinding principle utilizes the frictional force between coal and moving grinding components. In fact, the working principle of any coal mill is not the action of a single force, but the combination of several forces. According to the rotational speed of coal mill components, it can be roughly divided into three types: low-speed coal mill, medium speed coal mill, and high-speed coal mill.

The working principle of coal vertical mill;
The coal vertical mill is driven by an electric motor and drives the grinding disc of the coal mill to rotate through a planetary reducer. The 2-4 grinding rollers on the grinding disc rotate under the driving force of the grinding disc. The raw coal entering through the coal chute is distributed on the grinding disc. Due to the hydraulic loading force, there is compression between the grinding rollers and the grinding disc, causing large particles of raw coal to be crushed. The sliding friction force generated by the relative motion between the grinding roller and the grinding disc is used to achieve the crushing of small coal particles; During the grinding of raw coal in the mill, hot air (usually below 300 ℃) is introduced into the vertical mill to dry the moisture of the raw coal and meet the requirements for finished coal powder; The ground coal powder is transported by primary air into the separator for separation. The qualified coal powder is separated and transported to the coal powder bin, while the unqualified coarse coal powder is returned to the mill for re grinding. In order to achieve the required fineness of coal powder, a certain force must be applied to the grinding components. The grinding force is generated by the hydraulic system driving the spring device, which drives the upper grinding ring to move up and down to achieve loading force. The coal grinding work is completed by the grinding ring and the steel balls rolling on the raceway. All the steel balls are tightly arranged in a circle inside the upper and lower grinding rings, and the steel balls can freely roll between the grinding rings. The position of the rotation axis is constantly changed during coal grinding, Throughout the entire working life, the steel ball always maintains its roundness to ensure that the coal grinding performance remains unchanged, so that the output of the coal mill will not decrease due to the wear of the steel ball.

Parameter Table of Coal Vertical Mill

Highlighting advantages
High grinding efficiency and low power consumption
Low metal consumption per unit product
The process flow is simple, and the functions of material grinding, drying, and powder selection are completed simultaneously
Small footprint, compact layout, lightweight system equipment, and low investment in civil construction
Vertical mill is an ideal large-scale grinding equipment widely used in industries such as cement, electricity, metallurgy, chemical industry, non-metallic minerals, etc. It integrates crushing, drying, grinding, and grading transportation, with high production efficiency. It can grind block, granular, and powdered raw materials into the required powder materials.
Capacity: Different materials result in different processing capacities. Please refer to the technical parameter table below for details
Applicable materials: Vertical roller mill mainly grinds raw materials, clinker, mineral powder, slag, granulated blast furnace slag, limestone, coal powder, coke powder, coal gangue, fly ash, volcanic ash, gypsum, calcite, pyroxene, clay, sand, bauxite, silica fume, etc.
Application industries: cement chemical, coal, power and other industries.

Engineering Cases
Engineering Design and Equipment Manufacturing Supply of HVM2800M Vertical Pulverized Coal Preparation System
Processing material type: bituminous coal
Capacity: ≥ 80t/h
Product fineness: 200 mesh, 85% pass

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.