EPC Turnkey Contract for Mobile Roller Screen Stations for Coarse Screening in Mining
Mobile Roller Screen Station Project Overview:
This DLGS tracked mobile roller screen station is a mobile coarse screening solution launched by Zhongyu Dingli for applications such as the pre-screening of raw ore in mining, the screening of construction waste, soil remediation, and the coarse screening of metallurgical solid waste, offering flexible production capacity. The system replaces traditional stationary roller screens with a tracked undercarriage, eliminating the need for disassembly, assembly, or foundation construction. It can be transported directly to the job site for rapid “arrive-and-screen” commissioning. Key pain points include the long construction cycle of fixed screening lines, difficulties in relocating equipment, screen clogging caused by sticky, wet materials and high-cement-slurry content, and high equipment relocation costs due to multi-site operations at dispersed job sites. Key features of the solution include roller screens that retain the core advantages of fixed roller screens (simple structure, smooth operation, and low noise); a clog-resistant screen design suited for sticky, wet materials and mudstone mixtures; variable-frequency motors that flexibly adjust roller speed to match feed characteristics and downstream equipment; a screen body that can be configured horizontally or at an angle to meet on-site requirements; high-quality alloy steel roller plates with long wear life; and a tracked undercarriage capable of handling heavy-duty operations on complex terrain in mines and construction sites.
Mobile Roller Screen Station Process Flow:
For coarse-screened materials from multiple sources (raw ore, mudstone mixtures, construction and demolition waste, contaminated soil, and slag tailings), a customized process is employed: “crawler entry to site-feeding-coarse screening by roller screen-separation of coarse and fine materials.” Materials are uniformly fed into the roller screen station via a feeder, where coarse and fine separation is achieved through the gaps between the rotating roller plates; Variable-frequency motors automatically adjust roller speed based on material moisture content, stickiness, and particle size distribution, optimizing the balance between screening efficiency and throughput; oversize material from the screen proceeds to the next stage of crushing or classification, while undersize material is directly used for roadbed fill, recycled aggregate, or subsequent fine screening/washing. The screen body can be arranged horizontally or at an incline according to on-site requirements. The entire process line is compact, offers stable screening efficiency, and produces low noise levels. It can be flexibly connected in series with mobile crushing stations or mobile screening stations to form a complete production line based on project needs.
Mobile Roller Screen Station EPC Service Scope:
Solution Design: Based on material characteristics (adhesiveness, moisture content, particle size distribution), site conditions, and production capacity targets, we provide roller screen selection, roller gap configuration, screen body layout plans, and supporting equipment selection.
Equipment Manufacturing: Zhongyu Dingli’s in-house factory manufactures the tracked chassis, roller screen body, alloy steel roller plates, variable-frequency motors, and electrical control systems. Load testing and tracked mobility tests are conducted prior to shipment.
Installation and Commissioning: The tracked equipment moves autonomously to the worksite. We provide electrical connection, variable-frequency parameter setup, and commissioning with actual material to shorten the time to production, and train on-site operators.
Operation and Maintenance Management: We provide spare parts (alloy steel roller plates), remote diagnostics, operator training, and annual maintenance plans. The maintenance-friendly design reduces long-term operating costs.
Mobile Roller Screen Station Project Case Studies:
Construction Waste Recycling and Screening Project in Riyadh, Saudi Arabia Application Background: This project provides coarse screening services for the recycling of construction waste from urban demolition sites in Riyadh. The material consists primarily of concrete blocks, brick and tile fragments, and a mixture of sticky, wet soil. It has a high moisture content and requires frequent relocation to different demolition sites. Equipment Configuration: Two Zhongyu Dingli DLGS tracked mobile roller screen stations. Production Capacity Data: Each unit maintains stable throughput; the anti-clogging design of the roller screen effectively handles sticky, wet mixtures, ensuring consistent screening efficiency; the tracked undercarriage enables easy relocation between job sites without the need for disassembly, reassembly, or foundation construction, reducing the project preparation cycle by approximately 80% compared to fixed screening lines; the alloy steel roller plates offer excellent wear resistance, resulting in extended maintenance intervals for the roller surfaces and stable equipment operation. Customer Feedback: The project manager from the Saudi client stated that the DLGS tracked roller screen station can be driven directly onto demolition sites and put into operation immediately. The anti-clogging feature of the roller screen effectively resolves the issue of screen surface blockages caused by sticky and wet construction waste. Variable-frequency speed control allows for flexible adjustment of screening performance based on material characteristics, and the ease of relocation between multiple sites has significantly reduced project operating and relocation costs.
Mobile Roller Screen Station FAQ:
Q: What are the advantages of the DLGS tracked mobile roller screen station compared to a stationary roller screen?
A: The DLGS uses a tracked undercarriage, eliminating the need for disassembly, assembly, or foundation construction; it can enter the work site directly to achieve “arrive and screen” production. It is suitable for multi-site operations at dispersed construction sites, emergency rescue, and frequent relocation scenarios, shortening the project preparation cycle by approximately 80% compared to fixed lines.
Q: Can this roller screen station process sticky, wet materials and materials with high cement slurry content?
A: Yes. The roller screen’s anti-clogging design inherits the strong adaptability of fixed roller screens to sticky, wet materials, effectively screening mudstone mixtures, construction waste with high moisture content, and contaminated soil, while maintaining stable screening efficiency and resisting clogging.
Q: What is the purpose of using a variable-frequency motor to control roller speed?
A: The variable-frequency motor allows for flexible adjustment of roller speed based on the material’s moisture content, viscosity, and particle size distribution, optimizing the screening effect to match the processing capacity. At the same time, it can adjust the feeding rhythm according to the production capacity requirements of downstream crushing or screening stations, enabling coordinated operation throughout the entire process.
