Efficient Energy-saving Vertical Coal Mill for Coal Grinding in Cement Plant - Vertical mills

Efficient Energy-saving Vertical Coal Mill for Coal Grinding in Cement Plant - Vertical mills

Product Descripition:

Working Principle:
The material falls into the center of the grinding disc through the feeding tube, and the grinding disc rotating at a constant speed uses centrifugal force to evenly disperse and flatten the material outward, forming a certain thickness of material bed. Under the drive of the grinding disc, the material is pushed onto the roller conveyor of the grinding device and crushed by the rolling of the grinding roller. Under the action of centrifugal force, the pulverized coal powder overflows from the edge of the grinding disc and is carried by the high-speed upward hot air flow from the nozzle ring (air ring). Large particles directly fall onto the grinding disc for re grinding. When the material in the airflow passes through the upper separator, the coarse powder will return to the grinding disc for grinding under the action of the rotating rotor, and the qualified fine powder will enter the dust collector with the airflow and be collected into products.

Structural composition
Host: composed of grinding rollers, grinding discs, reducers, motors, etc., it is the core part of coal powder grinding. The grinding roller rolls on the grinding disc, crushing and crushing the material.
Separators: used to grade the ground coal powder, allowing the coal powder that meets the fineness requirements to pass through, and the unqualified coarse powder to return to the grinding disc for further grinding.
Hot air system: Provides hot air to dry the moisture in coal powder and bring the ground coal powder out of the mill. Hot air usually comes from kiln tail gas or hot blast stove.
Feeding system: including coal feeder, discharge pipe, etc., responsible for evenly feeding raw coal into the mill.
Dust collection system: collects coal powder, purifies exhaust gas, and ensures that the production environment meets environmental protection requirements. Common dust collection equipment includes bag filters, electrostatic precipitators, etc.
Control system: Real time monitoring and control of the operating parameters of the mill to ensure its stable operation.

Parameter Table of Coal Vertical Mill

Performance characteristics
Efficient and energy-saving: Compared with traditional ball mills, coal powder vertical mills have higher grinding efficiency and lower energy consumption. It adopts the principle of material bed grinding, which shortens the residence time of materials in the mill, reduces repeated grinding, and improves grinding efficiency.
Strong drying ability: It can use hot air stoves or kiln exhaust gases as heat sources to dry materials while grinding, and can handle raw coal with high moisture content, generally drying raw coal with moisture content up to 15%.
Stable product quality: The separator can accurately control the fineness of coal powder, making the product particle size uniform, which is conducive to improving combustion efficiency. Moreover, the airflow velocity inside the mill is high, and the material stays in the mill for a short time, making it easy to detect and control product quality.
Small footprint: compact structure, simple system, occupying about 50% less space than ball mill system, with less infrastructure investment.
Low noise and dust: Adopting a fully sealed system, it operates with low noise and dust, meeting environmental protection requirements.

Application Area
Electric power industry: In thermal power plants, vertical pulverized coal mills mill raw coal into pulverized coal to provide fuel for boilers. They are important equipment in thermal power generation systems.
Cement industry: Rotary kilns in cement plants require coal powder as fuel, and vertical coal powder mills can meet the large demand for coal powder in the cement production process.
Chemical industry: In chemical production, some processes require the use of coal powder as raw material or fuel. Coal powder vertical mills can provide suitable fineness coal powder for chemical production.

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.