Analysis of Influencing Factors on Unloading Rate of Large Steel Silo

The unloading rate of the steel silo refers to the percentage of the total material discharged from the steel silo, also known as the unloading rate. The unloading rate directly reflects the practical performance of the steel silo and is the main performance indicator of the steel silo. When the discharge situation of the steel silo deteriorates, the material in the warehouse accumulates more and more. The increase of the accumulated material and the slowdown of the discharge lead to the decrease of the effective fluidization volume of the steel silo, resulting in a low unloading rate. The low unloading rate not only makes the steel silo unable to exert a good discharge effect, but also reduces the economic benefits of the utilization of the steel silo.

The discharge of large steel plate silos adopts pneumatic conveying method, and the fluidity of materials is the key to whether the steel plate silos can be discharged normally. The fluidity of materials is affected by many aspects. Long-term backlog of materials, high humidity of materials, moisture from outside air entering the warehouse, humid bottom of the warehouse, and some improper human operations are all the reasons for the poor fluidity of materials.

The tonnage of the material is too large and the material level is too high, which increases the compactness of the material, the pressure on the bottom of the warehouse increases, the material is pressed against the bottom of the warehouse, and the fluidization performance is reduced. If the material is not activated after long-term storage, the material in the warehouse will be crushed to death, causing difficulties in giving the material. This phenomenon generally occurs during the off-season when the material is sold, when the material accumulation is much greater than the sales volume. In order to avoid the compaction of the material stored for a long time, the user of the steel silo should regularly use the external circulation pneumatic system to loosen the material at the bottom of the warehouse.

The moisture content of the powdery material itself is high, resulting in the reduction or failure of the fluidization performance of the material during discharge. In this regard, the user should strictly control the moisture content of the material before warehousing to minimize the moisture content of the material. The drier the material, the better its fluidization activity, and the less likely it is to be compacted.

The cement base layer at the bottom of the warehouse has not been completely air-dried, and effective moisture-proof measures have not been taken. The moisture return at the bottom of the warehouse increases the humidity of the material at the bottom of the warehouse to bond into blocks, which makes it difficult to give the material. In addition, some units of Party A require feeding in advance without waiting for the guide cone to air dry naturally, so the implementation of moisture-proof measures at the bottom of the warehouse is particularly critical.

When the material at the bottom of the warehouse is loosened, the high-pressure air source provided by the air compressor is sometimes used. If the moisture in the compressed air provided by the air compressor is not effectively dewatered, the material will also be bonded into blocks due to increased humidity. Affect the discharge. The user should ensure that the water removal device of the air compressor in use is running normally and drain the air storage tank in time.

Comprehensive ownership restricts the discharge of powdery materials, and humidity has become the most important factor affecting the fluidity of materials. The moisture content of materials, the humidity of the air in the pneumatic conveying system, the air humidity in the warehouse, and the humidity of the guide cone at the bottom of the warehouse have all become the keys to affecting the discharge. Taking effective measures to reduce the moisture content in each link can ensure the normal discharge rate. For materials that cannot be stored for a long time, Party A regularly loosens the bottom material of the warehouse. In addition, we and Party A should strictly abide by the safety rules and regulations when using the steel silo, and adopt the correct operation method to prevent human influence except for the system.