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Inner Mongolia Meifang Energy Co.,Ltd DTII Belt Conveyor Project

07/08

2024

07/08/2024

The DTII Belt Conveyor Project, manufactured by Nantong Darko Building Materials Machinery, showcases robust conveying capacity and an extensive conveying distance. This advanced system features a simple structure that allows for easy maintenance, ensuring operational efficiency and minimal downtime. Moreover, the project seamlessly integrates program control and automatic operation, significantly enhancing overall productivity and reliability in material handling.

The DTII belt conveyor demonstrates its operational capability even in challenging weather conditions, as it traverses snowy areas. This adaptability highlights its durability and effectiveness in a variety of environments.

Project Overview:

Company: Inner Mongolia Meifang Energy Co., Ltd.
Production Capacity: 2×960,000 tons per year
Belt Widths: 1.4m, 1.2m, 0.8m, 0.65m
Total Length: 3,500m

DTII Belt conveyor Principle

The conveyor belts (or wire ropes) are connected into a closed ring, and they are tightened with a tensioning device. Driven by the motor, the friction between the conveyor belts (or wire ropes) and the driving rollers (or driving wheels) makes the conveyor belt move. The belt (or wire rope) runs continuously to achieve the purpose of transporting the cargo from the loading end to the unloading end.

Advantages of our belt conveyor

Large Transmission Flow Rate: Capable of handling substantial volumes of material quickly.
Very Low Energy Requirement: Designed to operate efficiently, reducing energy costs.
Low Investment and Service Costs: Cost-effective design minimizes initial investment and ongoing maintenance expenses.
Stable and Trouble-Free Transportation: Ensures reliable delivery of products without interruptions.
User-Friendly Operation: Easy to operate, making it accessible for all personnel.
Reduced Manpower and Higher Productivity: Streamlined processes lead to improved efficiency and reduced labor costs.
Continuous Operation: Maintains a steady flow of materials, enhancing overall production capabilities.

By implementing the DTII belt conveyor system, Inner Mongolia Meifang Energy Co., Ltd. not only improves its material handling processes but also supports its commitment to operational excellence and sustainability in energy production.

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Hebei Qianbao Special Cement Co., Ltd dust collector project

07/08

2024

07/08/2024

The dust collector project at Hebei Qianbao Special Cement Co., Ltd. features advanced equipment, including PPCS air box pulse dust collectors and HMC single-machine pulse dust collectors. These systems are designed to enhance air quality and meet stringent environmental standards across the cement production process.

At Nantong Darko Building Materials Machinery, we leverage state-of-the-art laser cutting technology for our dust collector panels. This innovative approach not only guarantees the smoothness of the panels but also facilitates precise processing of panel holes. As a result, this significantly enhances the overall efficiency and reliability of our dust collection system. By adopting such advanced technology, we ensure that our products meet the highest standards of performance.

As a comprehensive high-tech enterprise, Nantong Darko seamlessly integrates research and development, design, manufacturing, and installation. With our foreign trade rights, import and export credentials, and construction engineering qualifications, we are well-equipped to serve clients on a global scale.

Our team is composed of highly skilled designers and technical experts who specialize in dust collector manufacturing. We take great pride in our professional processing and production capabilities. Additionally, our exceptional after-sales service ensures that our clients can operate with confidence and peace of mind.

Dust Collector Project Background

Hebei Qianbao Special Cement Co., Ltd. operates a white cement production line with a capacity of 1,800 tons per day. The project handles a gas volume of 240,000 m³/h, achieving efficient dust removal while adhering to environmental protection standards. Additionally, the system is designed for easy operation.

Advantages of our dust collectors

High Dust Removal Capability

Our modern dust collectors employ advanced filtering technologies, such as bag filtration, electrostatic dust removal, and wet dust removal. By integrating these innovative methods, we efficiently capture dust particles of various sizes, achieving an impressive capture efficiency of up to 99.9%. Consequently, our systems ensure that emissions consistently meet or exceed strict environmental standards. This commitment to excellence not only enhances air quality but also supports our clients in maintaining compliance with regulations.

Multi-Stage Filtration System

By implementing a multi-stage filtration system, we further enhance the dust capture rate. This ensures that even fine dust is effectively captured, thereby reducing secondary pollution.

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Huaxin Green Building Materials (Wuxue) Co., Ltd. Dust collector project

07/08

2024

07/08/2024

Huaxin Green Building Materials (Wuxue) Co., Ltd. Dust collector project

Project Background

Huaxin Green Building Materials (Wuxue) Co., Ltd. has launched a mechanical sand project that achieves full production of 30 million tons per year. With a total investment of 3 billion yuan, the construction completed in just 18 months. This project utilizes dry production methods to effectively address solid waste issues.

Technical solution design

Based on our demand analysis, we designed a customized dust collector solution:

High-Efficiency Dust Collectors: We use bag dust collectors with pulse jet technology for dust removal.

Advanced Control Systems: Our solution features automatic systems for remote monitoring and operation.

Multi-Stage Filtration: We implement a multi-stage filtration system to enhance dust removal efficiency.

Quantity: 55 sets

Gas Volume Handled: 52,000 m³/h, 17,580 m³/h, 26,700 m³/h, 33,400 m³/h

Auxiliary Equipment: Rotary or discharge valve, screw conveyor

Equipment manufacturing and installation

After finalizing the equipment design plan, our team quickly began manufacturing. We completed production within the specified timeframe. Next, the installation team arrived on-site. They followed the design drawings and construction plan to implement each step accurately.

Huaxin Green Building Materials (Wuxue) Co., Ltd. has achieved full production of 30 million tons per year mechanical sand project. With a total investment of 3 billion yuan, the construction was completed in just 18 months. The project utilizes dry production methods to address solid waste issues.

Debugging and acceptance

We completed the installation. Then, we thoroughly debugged the dust collector equipment. We conducted multiple tests. These tests confirmed that the equipment operates stably and efficiently under various conditions. The cement plant and the environmental protection department accepted the dust collector equipment.

Project Results

Significantly Reduced Dust Emissions: We put the dust collector equipment into operation. This action significantly reduced dust emissions and exceeded national and local standards.
Improved Production Environment: The air quality in the factory area improved greatly. This improvement enhanced the working conditions for employees.
Lower Operating Costs: Our dust removal system reduces maintenance frequency and costs. This change improves production efficiency.

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Huaxin 10,000-ton line dust collector project

07/08

2024

07/08/2024

Dust collector project

Project Background

The Huaxin 100 million ton production line is an important project. It aims to meet the demand for high-quality building materials. We use advanced production processes and equipment. The project team decided to use efficient dust collector equipment. This choice protects the environment and reduces dust emissions.

The Huaxin clinker production line can produce 10,000 tons per day. It is the world’s largest environmentally friendly cement kiln line.

Project Content

Equipment Selection and Design: We selected durable equipment for the Huaxin 100 million ton line. Our design team customized the solution based on the project site conditions. This customization ensures optimal performance.

Installation and Commissioning: Our technical team followed the design plan during installation. They ensured accurate implementation at every stage. After installation, we conducted thorough commissioning to confirm stable operation under various conditions.

Technical Training and Maintenance: We provided technical training for the operators of the Huaxin 100 million ton line. This training helped them master the operation and maintenance of the dust collector. We also created a maintenance plan for regular inspections to extend the equipment's service life.

Project Advantages

Efficient Dust Removal: The equipment captures dust effectively; as a result, it significantly reduces emissions and improves air quality.
Environmental Protection: The project ensures that dust emissions meet national and local standards. This compliance helps prevent pollution.
Ease of Operation: The equipment design prioritizes user-friendliness. It reduces operator labor and boosts production efficiency.

Conclusion

Our work on the dust collector project for Huaxin’s 100 million ton production line marks a significant achievement. We are committed to applying and innovating environmental technologies. Our goal is to promote the green development of industrial production.

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How to solve the quality problem of cement silo in cement clinker production line

07/08

2024

07/08/2024

1、Project Overview

The cement silo for a clinker production line began operation in 2007. It features a reinforced concrete circular structure with a height of 61.81 m and an inner diameter of 22.5 m. The silo wall is 380 mm thick and reinforced with non-prestressed steel bars. The concrete strength is designed to be C30.

After the silo started operation, inspections found multiple vertical and circumferential cracks on its outer surface. These cracks appeared mainly between elevations +14.166 m and +50 m.Some cracks exceeded 0.2 mm in width, violating specifications. Inspectors also found hollow areas and peeling concrete on the silo wall. Consequently, the owner required technical reinforcement for the cement silo.

2. Analysis of the cause of the accident

Upon discovering the cracks, the owner commissioned a testing agency to evaluate the silo wall's concrete strength, reinforcement, and cracks. The tests showed that the concrete strength generally met design requirements. However, the annular reinforcement from +14.166 m to +50.000 m mostly did not meet specifications. The crack widths between +23.5 m and +34.2 m also fell short of requirements.

The inspection revealed that vertical cracks resulted from stress and temperature effects on the wall. Circumferential cracks occurred due to insufficient reinforcement and poor joint connections. The team constructed the raw material homogenization silo using a slipform process. This method created tied and overlapped horizontal reinforcement joints. It did not use welded connections.The protective layer around the reinforcement was too thin. This weakened the bond between the reinforcement and the concrete.

3. Reinforcement treatment（Scheme selection）

We considered two solutions for reinforcing the raw material homogenization silo. One solution involves reinforcing the outer wall with concrete. The other solution applies external prestressing. Below is a comparison of both methods.

3.1.1 Use reinforced concrete to increase the cross-section of the cylinder wall

This method involves adding 200 mm of reinforced concrete to increase the cross-section of the cylinder wall from the foundation ring beam to +50 m. This solution would require reverse mold construction and take about six months to complete. Since the silo operates during this time, the long construction period is a drawback. Additionally, the new structure may not fully integrate with the existing steel bars, reducing material efficiency. The estimated cost for this method is around 2 million yuan, making it less favorable in terms of effectiveness and cost.

3.1.2 External prestressing reinforcement

Cracks mainly arise from inadequate circumferential reinforcement and temperature stress. We can place steel strands along the outer surface in the circumferential direction. Applying external prestressing will help the internal circumferential reinforcement and external strands work together.

Since the silo is currently in use, this method can effectively reinforce the structure and potentially close some cracks. The estimated cost for this project is about 1 million yuan.

Conclusion

Considering the reinforcement effectiveness, cost, and site conditions, we determined that the external prestressing method is the most reasonable and economical solution for this silo.