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The cement storage house solves the problem of storing cement during the off-season
Large steel silos can effectively solve the storage problem of cement production off-season; suffering from the plight of poor cement off-season and the resulting economic losses, built 1.1 large steel plate; reservoir parameter; large steel silo body adopts welded steel plate, the effective diameter of 30m, 1.2 cement storage; quality; storage using pneumatic conveying pipe cement this way of transportation, warehousing for cement density; library layer to storage conveying pipe and pile surrounding export still has a lot of; 1.3 is suitable for storage of bulk cement; large steel storage storage of bulk cement and sealed storage bags than good effect
Large steel warehouse can effectively solve the storage problem of cement during off-season
Due to the plight of the off-season cement sales and the resulting economic losses, the construction of 1 tons of steel plate bulk storage, its reserves according to a total of more than 18 thousand tons of grinding cement t. After the completion of the steel sheet bulk storage, not only has the problem of continuous production been solved completely, but also remarkable economic benefits have been achieved. 1990 winter storage of more than 1.8 t425 ordinary portland cement, then the price of more than 130 yuan per ton, by 1991 spring and summer soared to more than 240 yuan, this difference makes enterprises have considerable gains. 1 storage parameters of large steel plate and storage quality of cement
1.1 large steel plate storage parameters
Large steel silo body adopts welded steel plate, the effective diameter of 30m, covers an area of more than 1 acres, the storage wall straight part of high 16m, high 3.8m spherical top, bottom slope of 8 degrees, the depth of 2m, the overall calculation of reserves by Portland cement stock pile density 1.45t/m3, more than 18 thousand T.
1.2 cement storage quality
The storage cement is conveyed by pneumatic conveying pipe. The storage mode is basically distributed uniformly and uniformly because of the low weight of cement and good fluidity. In the initial stage, the storage volume is about 400t per day, and the measured angle of repose is 13 degrees. The storage cement is continuously stacked along the inclined plane, so that the cement stored in different time layers is evenly distributed. Before departure, the reservoir bottom annular gasification pipe, according to the order of alternate inflatable, high density deposition in gas permeability cement mixed gas, until the formation of the fluidized state, through the library inlet by library conveying pipe into the packaging warehouse or bulk vehicle. This role is basically the same as the bulk car unloading principle. Storage of cement through the warehouse wall 1.2m six orientation sampling and storage, cement inspection average value contrast. The physical properties of the cement are basically the same before and after storage, the initial setting time of the cement is slightly prolonged, the flexural strength is decreased slightly, and the compressive strength of 28d is increased by 0.17MPa, which shows that the storage effect is ideal.
The library stack layer to storage conveying pipe export and stockpile surrounding still has a lot of storage space, in order to make full use of the space in the middle layer, a flat material gasification pipe, through a gas duct, the electromagnetic valve control in the gasification gas under the intermittent gasification pipe material to the level of inflation, the pressurized air flow infiltration of superimposed layers of cement, to make it fully fluidization, superposition angle down, forcing the flow of cement flow to the lower space. With the continuous storage of cement down, to maximize the ball filled space. In this way, not only the effective storage space is fully utilized, but also the mixing and homogenizing effect of the cement in storage is realized. If the storage volume is basically balanced, the cement storage will be pre homogenized.
1.3 suitable for storage of bulk cement
Large plate storage of bulk cement is much better than sealed storage in bags. Although the inner packaging bag plastic film can prevent the decrease of air isolation deliquescence, storage quality, but in the preservation period of pile up again good, also can make the cement preservation period to 3 months, and large steel storage storage section and good homogenization effect; with the increase of storage time of cement storage density in the air. The isolation plate storage wall closely, is basically a vacuum seal, the sealing effect is far better than the masonry base, compared to not sealed bags. After 1991, because the bottom plug pipe gasification device cannot discharge through out lose, instead of packaging storage wall openings, holes under 5m deep cement storage after 2 years of Qing Dynasty, the physical property index of cement and cement compared to no change.
According to the test, more than 2 years of storage of cement, in addition to the extension of time, the flexural strength slightly reduced, the compressive strength has increased a little, and no agglomeration phenomenon. Thus it can be seen that the large steel plate storehouse with good sealing performance is the best choice for long storage cement.
2 Geological requirements for the construction of large steel reservoirs
The large steel storehouse was built in the silting land of the Yellow River. The distance from the Yellow River was less than 1km. It was completely quicksand geological, and the groundwater level was less than 2m. Stone pile shall be broken if conventional storage is built. And build large steel storehouse, adopt special foundation, exert the dynamic reaction force of quicksand, the overall investment is equivalent to 1/7 of the conventional warehouse cost, and the storage capacity is equal to the total capacity of 26 conventional warehouses. The sand foundation stress can be seen, the edge foundation for the outer tangential, Kuhe increase, the quicksand centripetal flow, with the pressure increasing from moisture and air gap in quicksand, quicksand centripetal flow not only increased buoyancy, and density increase. In more than 3 years of measurement, under full load pressure, the reservoir not only did not sink (design allowable value of 400mm), but increased in the river and rainy season, but increased by 60mm. In the reservoir rise, because the bottom area is more than 1 mu, there is no inclining phenomenon.
3 library production requirements
The gravity of the large steel storehouse is completely accumulated on the ground. Besides the foundation treatment of the reservoir, the accumulated cement is a balanced pressure. Besides the discharge channel and tidal layer, the bottom of the reservoir needs no special treatment. Chamber welding is lap joint, without supporting reinforcement measures. The spherical top eliminates the shape of the steel tube and requires no special reinforcement.
Large steel warehouse can effectively solve the storage problem of cement during off-season
Due to the plight of the off-season cement sales and the resulting economic losses, the construction of 1 tons of steel plate bulk storage, its reserves according to a total of more than 18 thousand tons of grinding cement t. After the completion of the steel sheet bulk storage, not only has the problem of continuous production been solved completely, but also remarkable economic benefits have been achieved. 1990 winter storage of more than 1.8 t425 ordinary portland cement, then the price of more than 130 yuan per ton, by 1991 spring and summer soared to more than 240 yuan, this difference makes enterprises have considerable gains. 1 storage parameters of large steel plate and storage quality of cement
1.1 large steel plate storage parameters
Large steel silo body adopts welded steel plate, the effective diameter of 30m, covers an area of more than 1 acres, the storage wall straight part of high 16m, high 3.8m spherical top, bottom slope of 8 degrees, the depth of 2m, the overall calculation of reserves by Portland cement stock pile density 1.45t/m3, more than 18 thousand T.
1.2 cement storage quality
The storage cement is conveyed by pneumatic conveying pipe. The storage mode is basically distributed uniformly and uniformly because of the low weight of cement and good fluidity. In the initial stage, the storage volume is about 400t per day, and the measured angle of repose is 13 degrees. The storage cement is continuously stacked along the inclined plane, so that the cement stored in different time layers is evenly distributed. Before departure, the reservoir bottom annular gasification pipe, according to the order of alternate inflatable, high density deposition in gas permeability cement mixed gas, until the formation of the fluidized state, through the library inlet by library conveying pipe into the packaging warehouse or bulk vehicle. This role is basically the same as the bulk car unloading principle. Storage of cement through the warehouse wall 1.2m six orientation sampling and storage, cement inspection average value contrast. The physical properties of the cement are basically the same before and after storage, the initial setting time of the cement is slightly prolonged, the flexural strength is decreased slightly, and the compressive strength of 28d is increased by 0.17MPa, which shows that the storage effect is ideal.
The library stack layer to storage conveying pipe export and stockpile surrounding still has a lot of storage space, in order to make full use of the space in the middle layer, a flat material gasification pipe, through a gas duct, the electromagnetic valve control in the gasification gas under the intermittent gasification pipe material to the level of inflation, the pressurized air flow infiltration of superimposed layers of cement, to make it fully fluidization, superposition angle down, forcing the flow of cement flow to the lower space. With the continuous storage of cement down, to maximize the ball filled space. In this way, not only the effective storage space is fully utilized, but also the mixing and homogenizing effect of the cement in storage is realized. If the storage volume is basically balanced, the cement storage will be pre homogenized.
1.3 suitable for storage of bulk cement
Large plate storage of bulk cement is much better than sealed storage in bags. Although the inner packaging bag plastic film can prevent the decrease of air isolation deliquescence, storage quality, but in the preservation period of pile up again good, also can make the cement preservation period to 3 months, and large steel storage storage section and good homogenization effect; with the increase of storage time of cement storage density in the air. The isolation plate storage wall closely, is basically a vacuum seal, the sealing effect is far better than the masonry base, compared to not sealed bags. After 1991, because the bottom plug pipe gasification device cannot discharge through out lose, instead of packaging storage wall openings, holes under 5m deep cement storage after 2 years of Qing Dynasty, the physical property index of cement and cement compared to no change.
According to the test, more than 2 years of storage of cement, in addition to the extension of time, the flexural strength slightly reduced, the compressive strength has increased a little, and no agglomeration phenomenon. Thus it can be seen that the large steel plate storehouse with good sealing performance is the best choice for long storage cement.
2 Geological requirements for the construction of large steel reservoirs
The large steel storehouse was built in the silting land of the Yellow River. The distance from the Yellow River was less than 1km. It was completely quicksand geological, and the groundwater level was less than 2m. Stone pile shall be broken if conventional storage is built. And build large steel storehouse, adopt special foundation, exert the dynamic reaction force of quicksand, the overall investment is equivalent to 1/7 of the conventional warehouse cost, and the storage capacity is equal to the total capacity of 26 conventional warehouses. The sand foundation stress can be seen, the edge foundation for the outer tangential, Kuhe increase, the quicksand centripetal flow, with the pressure increasing from moisture and air gap in quicksand, quicksand centripetal flow not only increased buoyancy, and density increase. In more than 3 years of measurement, under full load pressure, the reservoir not only did not sink (design allowable value of 400mm), but increased in the river and rainy season, but increased by 60mm. In the reservoir rise, because the bottom area is more than 1 mu, there is no inclining phenomenon.
3 library production requirements
The gravity of the large steel storehouse is completely accumulated on the ground. Besides the foundation treatment of the reservoir, the accumulated cement is a balanced pressure. Besides the discharge channel and tidal layer, the bottom of the reservoir needs no special treatment. Chamber welding is lap joint, without supporting reinforcement measures. The spherical top eliminates the shape of the steel tube and requires no special reinforcement.
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ZANCHEN (XIAMEN) IMPORT & EXPORT CO. LTD.
Address：No. 390, Jiahe Road, Huli District, Fujian, Xiamen
Website：www.zcengineering.com
Phone：+0086-15801340546
Tel：+0086-0592-5221330
E-mail：effie@zcengineering.com
lfqh12604@126.com
chenlifen12604@hotmail.com