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Cement storage silos come in many sizes, from small 100ton used cement silo to large cement silos with the capacity to hold thousands of tonnes of material. Bulk material storage and distribution requires large capacities. According to the US Geological Survey, China's cement consumption was around 2.25 billion tonnes in 2022. The country built around 12,000 km of highways and 6,000 km of railways each year between 2017 and 2022, with 88% of the highways paved with cement. China currently has 104 cement storage facilities nationwide, with an annual pestle capacity of 19 million. Large-capacity cement silos are needed to cater to the demand for this infrastructure.
The three primary types of large-capacity silos are as follows:
Integrated Cement Silos:
These silos come with a stand, weighing system, and distribution system. A bulk material chute, fly ash valve, bulk material level indicator, bulk material arch breaking device, bulk material discharge valve, and bulk material vibrating drainer are some of the other features. One can cement silos in different configurations. Different arrangements of the above-listed parts will customize these silos to suit various on-site conditions.
Horizontal Cement Storage Bins:
Unlike integrated silos, horizontal silos have horizontal storage configurations. Internally, some bins will have a bulkhead or separator to divide up the material. Because of their shape, these silos are better suited for sites with height restrictions. Transporting these silos is easier since they are flat. Low-pressure aeration systems, vibrating drumming valves, tipping valves, and ash discharge valves are some features of horizontal silos.
Skip Hopper Cement Silos:
A skip hopper silo is a small-capacity silo with a hopper. These silos are portable and used with mini-mixing machines. The hoppers have a crane or lift to transport them from one location to another. In many cases, the lift or crane is an automated function that makes the process easier.
The key specifications and requirements for maintaining a 100-ton cement silo are as follows:
Silo Size
Used silos are typically available in sizes from 30 tons to 100 tons, and some can even go up to as high as 500 tons. However, a 100-ton capacity is the most common size for many applications. The actual volume of cement that can fit within the silo may be slightly less due to factors such as the internal shape of the silo and the space needed for venting and aerating the cement.
Conveyor System
A silo always comes with a conveyor system so that the cement can be transported to designated locations. This system usually contains an auger, which works through a motor, and an air compressor that helps transfer the material through the pipes. In a 100-ton silo specifically, the conveyor belt or auger will be long enough, and the motor's power will be sufficient to ensure seamless conveyance of cement from the silo to the required location.
Feeding System
Flexible or gravity-fed feeders are used in the silos to ensure a smooth downward flow of cement from the silo into the conveying system. One of the key elements in the feeder is a set of vibrating hoppers that help keep the cement flowing steadily by eliminating clogs and bulk friction.
For a 100-ton silo specifically, the feeder will be designed to handle the larger volume of cement and ensure a consistent and reliable feeding rate.
Maintenance Requirements
100-ton cement silos require periodic inspection of the silo structure, namely, the silo walls, welds, and seams, to prevent unnecessary leakage. The conveyor system, feeder system, and vibrating hoppers should be cleaned regularly to avoid buildup and contamination. Most importantly, the routine checking of pressure relief valves and safety devices may prevent any potentially catastrophic events.
With the rise of the green building concept, the use of silos in cement supply and storage has become increasingly popular. Below are some industries that currently use the 100-ton cement silo.
When shopping for a used cement silo, it will be necessary to bear various factors in mind to ensure it will fulfill the needs of the project. Buyers must evaluate the type of cement that will be stored in the silo, as some materials may react with specific silos or degrade when stored for prolonged periods. Check the compatibility between the silo's discharge system and the equipment to be used for delivering and handling cement. Consider the transportation logistics and whether the silo can be delivered to the required location safely and efficiently. Examine whether the necessary permits have been obtained, as some states have specific regulations regarding the storage of commercial materials.
All vital silo components, including the valves, filters, hoppers, discharge lines, augers, blowers, and compressors, must be checked since they can directly impact the performance and handling of the stored materials. The cement silo's capacity must also be considered in accordance with the company's needs to house the necessary inventory without incurring excessive costs for unused storage.
More importantly, ensure that the silo has been properly maintained throughout its lifespan. Documentation regarding any previous repairs, maintenance routines, or modifications made to the structure should be available upon purchase. If available, consider using an expert's help when deciding to inspect all aspects closely before making a purchase.
Finally, when making this vast investment, it may be worthwhile to look for options with safe features, such as pressure-relief valves, level indicators, overflow protection, and other safety measures indispensable for preventing accidents from occurring during handling or storage.
Q: How is the 100-ton cement silo transported?
A: The silo capacity is up to 100 tons, which is large. It may not be suitable for bulk shipping. The method of transportation will depend on the size and weight of the silo. Small silos can be transported using flatbed trucks. Large silos that have chunks taken out for transportation can be transported using wide-load trucks.
Q: Can the 100-ton cement silo be moved once it is assembled?
A: No. Once the silo is assembled and anchored to the foundation, it cannot be moved. Attempting to do so can damage the silo.
Q: How to prevent cement from hardening inside the silo?
A: The key to keeping the cement fresh and preventing hardening is to ensure that the silo is well ventilated. Avoid placing silos in wet and rainy areas. Investing in proper maintenance is important, too. Get the silo checked regularly for damages.
Q: What kind of maintenance does a 100-ton cement silo need?
A: Silos need inspections to ensure that there are no leaks or blockages. When this happens, the quality and performance of the silos will be maintained. Also, consider regular cleaning to prevent the accumulation of debris and residue.
Q: What is the lifespan of a 100-ton cement silo?
A: On average, a well-constructed and maintained cement silo can last up to 20 to 30 years or even longer.
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