Highly efficient material management type circular yard

- Unique structure and operation mode

The top adopts spherical mesh frame structure, which has good mechanical stability and can effectively disperse the loads borne by the top, including natural forces such as wind and snow as well as the weight of materials in the yard. The reinforced concrete retaining wall at the bottom provides a solid foundation to support the entire yard and ensures the structural integrity of the yard under different working conditions. The reclaimer in the center realizes the integration of stacking and reclaiming operations, and its unique design enables efficient material turnover in a limited space. The cantilever stacker can rotate and tilt 360 degrees around the center column, greatly improving stacking flexibility and coverage, allowing materials to be accurately stacked at various locations in the yard, as well as quickly and accurately accessing the materials needed during pickup.

- Efficient utilization of the site

Compared with irregularly shaped material yards, circular material yards can obtain a larger area under the same perimeter, and have good adaptability to the site, whether in the open flat land or in the area with certain terrain restrictions, it can be laid out and constructed in a better way. Small footprint and high site utilization rate, its circular layout makes the materials in the stacking process can make full use of space, reduce the corners and other difficult to use the area, improve the storage capacity per unit of land area, and effectively save the land resources, reduce the land cost of enterprises.

- Convenient and economic operation

The stacker reclaimer is easy to operate, through the advanced automation control system, the operator can remotely control the actions of the stacker reclaimer in the central control room, including slewing, tilting, walking, and loading and unloading of materials, etc., which greatly reduces the manual labor intensity and operational difficulties. Low investment cost, due to its relatively compact structural design, high degree of equipment integration, in the construction process can reduce the amount of materials used and the complexity of construction, while in the procurement and installation of equipment also has a certain cost advantage, can be continuous and simultaneous stacking and reclaiming operations, to ensure the high efficiency of the material turnover, improve the efficiency of the production and operation, and bring good economic benefits for the enterprise.

 

- Diameter of material yard

The diameter of circular yard is generally between 60 - 120m, different diameters correspond to different storage capacity and operation scale. For example, the storage capacity of 60m diameter circular yard may be around tens of thousands of tons, which is suitable for small enterprises or scenes with small material turnover; while the storage capacity of 120m diameter large circular yard can reach hundreds of thousands of tons, which can satisfy the large-scale industrial enterprises with large quantities of material storage and processing needs.

- Stacking and reclaiming capacity

The stacking capacity of cantilever stacker is usually between 300-3000 tons/hour, and the reclaimer's capacity is between 200-2000 tons/hour, which can be adjusted according to the enterprise's production demand and equipment selection. Higher stacking and reclaiming capacity can ensure rapid turnover of materials in the yard, reduce the accumulation time of materials, and improve the activity and quality stability of materials.

- Center column and cantilever parameters

The height of the center column is generally between 20 - 50m, and its loading capacity needs to meet the requirements of cantilever stacker's slewing, tilting and material weight and other aspects of the load. The length of the cantilever depends on the diameter of the yard, generally between 0.8 - 1.2 times of the radius of the yard, and its structural strength and rigidity should be able to ensure that no deformation or damage occurs in the process of stacking and reclaiming materials, so as to ensure the accuracy and safety of the operation.

 

- Coal industry: It is used for storing raw coal, fine coal and other coal products. After coal mining, raw coal can be stored in the round yard first, and then be reclaimed and transferred according to the market demand and subsequent processing requirements. Fine coal can also be temporarily stored and deployed in the circular yard after processing, which is convenient for docking supply with power plants, iron and steel mills and other customers.

- Port Logistics: In the port area, the circular yard can be used as a transit storage facility for bulk cargoes such as ore, coal, grain, etc. The efficient stacking and reclaiming capacity of the circular yard makes it easy for customers to connect with power plants and steel mills. Its efficient stacking and reclaiming capacity can quickly complete the loading and unloading of goods and transit, improve the logistics efficiency of the port, reduce the docking time of ships, and enhance the operational efficiency of the port.

- Power industry: power plants need to store a large amount of coal as fuel, the circular yard can meet the demand for coal storage in power plants, and its continuous and simultaneous stacking and reclaiming operation can ensure the timeliness and stability of fuel supply in power plants and the normal operation of generating units, while its small footprint also meets the limited site planning requirements of power plants.

 

- Equipment Maintenance

Regularly inspect and maintain the center column, cantilever stacker and reclaimer. Check the verticality of the center column and the foundation connection to prevent the equipment from tilting due to foundation settlement or structural deformation. Carry out lubrication and parts inspection on the rotary and tilting mechanisms of the cantilever stacker to ensure that their movements are flexible and accurate. The scraper, conveyor belt and other parts of the reclaimer should be regularly checked for wear and replaced in time to ensure the efficiency and quality of the reclaimer.

- Structural monitoring

Establish a structural monitoring system for the circular material yard, and regularly inspect the spherical mesh frame structure and reinforced concrete retaining wall. Monitor the bar stress, node connection and overall deformation of the net frame structure, and deal with the problems of bar corrosion and node loosening in time. Concrete cracks and strength changes of the retaining wall are detected to prevent material leakage or structural instability of the yard due to damage of the retaining wall.

- Operational Safety

In the process of stacking and reclaiming material operation, ensure the operation safety of the equipment. Set up perfect safety protection devices, such as limit switches and anti-collision devices of the stacker reclaimer, to prevent equipment collision leading to damage or casualties. At the same time, pay attention to the stability of the material stacking to avoid safety accidents caused by material collapse. Operators should strictly abide by the operating procedures, and illegal operation is strictly prohibited.