I need the whole processing about limestone production and limestone plant including crushing plant and other plant for my homework info.
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Limestone Quarrying Processing
Limestone at Lime Acres occurs in layers of varying purity, up to 10 metres thick. As much as three tons of the lower purity stone (overburden) must be mined to obtain one ton of high purity limestone. During subsequent processing in the rotary kilns, approximately two tons of limestone must be fed into the kilns to produce one ton of lime. This is due to chemical and dust losses.
Thus for each ton of the final product sold, more than 8 tons of rock has to be quarried. To meet total demand, the quarries can be called upon to mine in excess of one million tons of rock per month.
Limestone Crushing and Screening Processing
Run-of-quarry limestone, which includes boulders of a cubic meter in size, is transported to a gyratory primary crusher, followed by a similar but smaller secondary crusher with capacity of 1 800 tons per hour. After the crushers, the limestone, now reduced to less than 90 mm in size, is blended on a stockpile system.
There are two stockpiles each containing approximately one week's production. Limestone is recovered from the blending stockpiles by means of a drum reclaimer and is transported by overland conveyor to the tertiary crushing and screening plant where the stone is crushed to less than 50 mm. Inferior quality fines are removed and the remainder split into the following size fractions and stockpiled.
The bulk of the stone is recovered from the stockpiles by means of conveyors and fed to the kilns. A small percentage is loaded into trucks for dispatch to clients who require limestone products instead of lime.
Limestone at Lime Acres occurs in layers of varying purity, up to 10 metres thick. As much as three tons of the lower purity stone (overburden) must be mined to obtain one ton of high purity limestone. During subsequent processing in the rotary kilns, approximately two tons of limestone must be fed into the kilns to produce one ton of lime. This is due to chemical and dust losses.
Thus for each ton of the final product sold, more than 8 tons of rock has to be quarried. To meet total demand, the quarries can be called upon to mine in excess of one million tons of rock per month.
Limestone Crushing and Screening Processing
Run-of-quarry limestone, which includes boulders of a cubic meter in size, is transported to a gyratory primary crusher, followed by a similar but smaller secondary crusher with capacity of 1 800 tons per hour. After the crushers, the limestone, now reduced to less than 90 mm in size, is blended on a stockpile system.
There are two stockpiles each containing approximately one week's production. Limestone is recovered from the blending stockpiles by means of a drum reclaimer and is transported by overland conveyor to the tertiary crushing and screening plant where the stone is crushed to less than 50 mm. Inferior quality fines are removed and the remainder split into the following size fractions and stockpiled.
The bulk of the stone is recovered from the stockpiles by means of conveyors and fed to the kilns. A small percentage is loaded into trucks for dispatch to clients who require limestone products instead of lime.