Vertical Raw Mill
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Vertical Raw Mill
A cement vertical roller mill, or vertical mill, is a crucial component in cement production. It comprises key elements such as grinding rollers, grinding table, pressure system, separator, base, casing, transmission system, and lubrication mechanism. Material is fed into the mill’s central area from its waist, where it accumulates on the rotating grinding table. The mill’s casing drives the table to rotate, while the rollers revolve around their axes due to friction with the table. Under the influence of centrifugal force, material migrates towards the table’s edge and undergoes crushing and grinding between the rollers and table. Hydraulic tensioning systems provide the requisite grinding pressure, which can be adjusted based on material hardness. This efficient process is essential for cement production, offering optimal particle size distribution and reduced energy consumption.
Type of Vertical Raw Mill
Vertical mills come in various types such as LM, ATOX, RM, MPS, OK, CK, TRM, HRM, sharing a common powder grinding principle and structural composition. Their differences lie in the design of grinding tables, roller shapes, and quantity, as well as improved separator systems for enhanced efficiency and finer product control. Each type employs unique roller pressure mechanisms, offering diverse advantages. These innovations ensure superior performance and versatility in the cement industry.
| S/N | Type of Vertical Mill | Shape of Vertical Mill | Type of Separator | Can the grinding roller be lifted up and turned out? | QTY of Gringing Roller(pcs) |
|---|---|---|---|---|---|
| 1 | LM (Loesche) | Conical grinding roller, flat grinding disc | Rotary cage type | When starting, the grinding roller can automatically lift from the grinding disc, reducing the starting torque | 2-6 |
| 2 | ATOX(F.L.Smith) | Conical grinding roller, flat disc shape disc | Static powder separator, Rotary cage type | NO | 3 |
| 3 | RM (Polysius) | Tire split roller, bowl shaped flat plate | Rotary cage type | NO | 2 sets, 4 rolles |
| 4 | MPS(Pfeiffer) | Tire inclined roller, circular groove shaped disc | Rotary cage type | NO | 3 |
| 5 | OK/CK((Onoda/Kawasaki) | Tire inclined roller, circular groove shaped disc | Rotary cage type | YES | 2-4 |
| 6 | HRM(Sinoma) | Tire roller, groove plate | Rotary cage type | YES | 3-4 |
| 7 | TRM(Sinoma) | Conical grinding roller, flat disc shape disc | Rotary cage type | YES | 2-4 |
Table Of Contents For This Page
It is not easy to introduce all aspects of Vertical Mill, so we have prepared a lot of information on this page for you to delve into. To make sure you can find the information you want quickly, we have prepared this content directory that will jump to the corresponding location when you click on it.
Technological process For Vertical Mill
Vertical mill grinding process integrates drying, grinding, powder selection, and conveying equipment into a compact and space-saving system. This innovative system boasts low noise levels, high grinding efficiency, and a small footprint. The grinding process begins with feeding raw materials with a certain moisture content into the vertical roller mill from the top or bottom. The material is then crushed and ground between the grinding rollers and the grinding disc.
Simultaneously, waste heat gases from the kiln preheater or cooler, along with ambient air, enter the mill from the bottom, providing heat for drying and grinding. The airflow, generated by an exhaust fan, creates a negative pressure within the mill, lifting the powdered material to the top of the mill. Here, an integrated powder selection machine (separator) separates the coarse powder, which is then recirculated for further grinding, while the fine powder is carried by the airflow into a dust collector, achieving the separation of material and gas. The purified gas is subsequently discharged after dust removal.
This efficient and space-saving process not only ensures the production of finely ground raw materials but also minimizes environmental impact by effectively capturing and treating waste gases.
Key components of Vertical mill
Vertical mills consist of key components: rollers, grinding table, pressure system, and classification system (static, dynamic, and high-efficiency Separator). These components optimize cement grinding, enhancing productivity. Discover the versatility of cement vertical mills.
Grinding table & Rollers
- magnetic particle testing
- Ultrasonic testing
- Welding hard layer detection
- Material report
Vertical mills employ 2-6 grinding rollers and a grinding disc to crush and grind materials like limestone, clay, or sandstone，etc. They ensure a consistent material bed thickness and uniform pressure contact, utilizing wear-resistant metal liners for efficient and reliable operation.
Pressure system
- The forging adopts a large hydraulic press to ensure the forging ratio
- Ultrasonic testing
- Overall heat treatment，fine finishing
- Material report
The vertical mill relies on a pressure mechanism to crush and grind bulk materials into fine powder. In vertical mills, this is achieved using hydraulic or pneumatic systems, applying pressure to the grinding rollers. The rollers are positioned beneath the pressure frame, with one end of a lever connected to the pressure frame and the other end linked to the piston rod of a hydraulic cylinder. The hydraulic cylinder exerts pressure through the lever on the grinding rollers, effectively crushing and grinding the materials. processing in vertical mills.
classification system
- Plasma discharge
- Laser level ensures welding accuracy
- dynamic balance test
- materil report
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Main Parameter/Device for Vertical Mill of 5000T/d Cement Line
| Process Equipment | TRM Vertical Mill System | HRM Vertical Mill System | ATOX-50 Vertical Mill |
|---|---|---|---|
| Production capacity(t/h) | 400-450 | 420-500 | 400-410 |
| Feeding fineness/mm | ＜80 | ＜100 | ＞100（2%） |
| Product fineness：R0.08 | ≤12 | ≤16 | ≤12 |
| Processing air volume（m³/h） | 640000-714441 | 820000-900000 | 850000-950000 |
| Feeding moisture content％ | ≤7 | ≤6 | ≤8 |
| Product moisture content％ | ≤1 | ≤1 | ≤0.5 |
| Feeding Wind temperature ℃ | 253 | 250 | 250 |
| Product Wind temperature ℃ | 90 | 90 | 80-95 |
| Type of Vertical Mill | TRM53.4, Diameter of Grinding Roller: Φ2450mm, Quantities of Rollers:4 pcs, Diameter of Grinding Table: Φ5300mm, Speed of Grinding Table:25.57r/min | HRM4800, Diameter of Grinding Roller: Φ2600mm, Quantities of Rollers:4 pcs, Diameter of Grinding Table: Φ4800mm, Speed of Grinding Table:25.6r/min | ATOX-50, Diameter of Grinding Roller: Φ30000mm, Quantities of Rollers:3 pcs, Diameter of Grinding Table: Φ5000mm, Speed of Grinding Table:25 r/min |
| Motor | Type:YRKK900-6, Voltage:6KV, Power:4200KW | Type:YRKK900-6, Voltage:6KV, Power:3800KW | Type:YRKK900-6, Voltage:10KV, Power:3800KW |
| Reducer | Model:JLP400-WX3, Speed ratio: 39.368:1 | Model:MLX400, Speed ratio: 38.9:1 | Model:KMP710, Speed ratio: 39.42:1 |
Spare parts for Vertical Raw Mill
Atox Mill Roller Segment
Bearing for grinding roller
Grinding Roller Assembly
Grinding Roller Cover A
Grinding Roller Cover B
Grinding Roller Segment
The Process Flow
Please note that the final process depends on the customized service you require, the specifications of the raw materials used, the relevant national laws, and the distance of transportation.
Step 1:Needs Assessment
We begin by working closely with our clients to understand their specific requirements. This includes identifying the types, quantities, and technical specifications of spare parts needed for their cement equipment. We offer tailored solutions, providing our clients with a selection of compatible spare parts, reducing the need for multiple suppliers and simplifying procurement.
Step 2: Supplier Network of CEMSPARE
CEMSPARE established a robust and reliable supplier network to meet the specific needs of our clients in the cement industry. We maintain an extensive database of reputable suppliers and manufacturers. This database includes an evaluation of their reputation, delivery capabilities, and adherence to quality standards. By building and managing this supplier network, we ensure that our clients have access to a diverse range of high-quality spare parts while maintaining cost-efficiency and reliability in the procurement process. This network serves as a cornerstone of our integrated procurement capabilities.
Step 3: Quality Assurance
Quality control is at the core of our integrated procurement process at Cemspare. Upon receipt of spare parts, we conduct a meticulous in-house quality inspection. Our dedicated team of experts thoroughly examines each component to verify that it aligns with the specified technical standards and quality benchmarks. In cases where additional quality verification is deemed necessary, Third-Party Laboratory conduct comprehensive quality tests to provide an extra layer of assurance.
Step 4: Timely Delivery
We closely monitor our suppliers’ delivery processes, ensuring that spare parts are dispatched in a timely manner. To guarantee on-time delivery, we proactively plan loading and shipping schedules according to your specific requirements and delivery deadlines. We manage the logistics and delivery process, ensuring cement plant on-time receipt of spare parts
Step 5: Ongoing Support & Continuous Improvement
At Cemspare, our commitment to clients extends far beyond the procurement phase. We are dedicated to providing continuous support and optimizing our services. We actively solicit and encourage feedback from our clients on their experiences with our services. This includes their feedback on the spare parts procurement process, quality, and overall satisfaction. We make necessary improvements to the spare parts procurement process, adjusting strategies to align with evolving industry demands and technological advancements.
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The Basic Knowledge About Cement Industry
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Maintenance and Repair of Mechanical Equipment in Cement Plant
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Rotary kiln supporting roller installation and adjustment
After the new dry process cement rotary kiln is put into operation, the problem of heating of the supporting roller tiles will occur. In serious cases, it will lead to accidents such as tile burning,
Rotary kiln production line Precautions when shutting down the kiln
The shutdown of the firing system should be carried out in a planned manner when no unexpected circumstances occur. At the same time, the cooperation of relevant departments is required to ensure that each department
The Common Pitfalls When Purchasing
Here are some potential pitfalls to avoid when purchasing Cement Spare parts from China
- Lack of knowledge about the Chinese cement spare parts market.
- Discrepancies in the prices of purchased spare parts.
- Potential counterfeit or low-quality components.
- Compatibility issues between purchased spare parts and the main equipment.
- Insufficient technical support or after-sales services.
Be cautious when procuring cement spare parts in China. Pitfalls include market unfamiliarity, price disparities, communication challenges, compatibility issues, lack of tech support, and quality concerns. Choose trusted suppliers like CemSpare.”
A Brief Self-Nomination
We Make it Easy to Source Cement Spare Parts from China
CEMSPARE is a professional cement spare parts supplier with over 30 years experience, provides a formidable technical team with experts from top design institutes, deep collaborations with renowned brands like Siemens, Schneider etc, stringent quality assurance, and round-the-clock after-sales support.
- One-stop cement spare parts Solution: Cemspare offer one stop purchasing solutions, covering both electrical and mechanical spare , allowing you to procure a wide range of products with less time and effort.”
- Market Expertise: With our extensive supply chain and in-depth understanding of the Chinese market, we ensure you can acquire the highest-quality products at the most competitive prices, empowering your purchasing decisions with confidence.”
- Technical Support: We have technical experts from major design institutes who can address all your technical concerns, ensuring comprehensive support for your needs.
- Strict quality inspection&After-Sales Service：We Guarantee that every product sold strictly meets your requirements, and 24/7 After-Sales Support.
CemSpare leverages its strengths to ensure the professional, scientific, and standardized operation of cement equipment spare parts. Choose us for a reliable partner in your cement spare parts needs.”
The FAQs About CEMSPARE
Frequently Asked Questions About Cemspare’s Cement Plant Solutions
How comprehensive is your range of spare parts for cement equipment?
Cemspare can provide you with a full range of spare parts and offers an extensive and diverse selection of spare parts to meet the full spectrum of cement plant needs.
How do you ensure the quality of the spare parts you provide?
We prioritize rigorous in-house quality control. if necessary, third-party laboratory verification to guarantee that spare parts meet industry standards.
What are your accepted payment methods?
Cemspare accepts a range of payment methods, including bank transfers(T/T), letters of credit (LC), and other secure financial instruments. We work with clients to find a payment solution that suits their needs.
Can you handle emergency orders for critical spare parts?
Yes, Cemspare can expedite emergency orders for critical spare parts to minimize downtime. We have efficient processes in place to respond to urgent requirements.
How can we request a quote for specific spare parts?
To request a quote, simply contact our team sales@cementspare.com with the details of the spare parts you need. We will promptly provide a detailed quotation tailored to your requirements.
Do you have a track record of successful partnerships with other cement plants?
Yes, Cemspare has a proven track record of successful partnerships with numerous cement plants, and we can provide references to showcase our reliability and expertise.
What is your standard lead time for spare parts delivery?
The lead time for delivery depends on the specific spare parts and supplier availability. We work closely with clients to determine and meet their delivery timelines.
What kind of ongoing support can we expect after procurement?
Our commitment extends beyond procurement; we provide ongoing support to maintain seamless operations. Client feedback is invaluable in improving our services.
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