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standard operational proceduce in crusher plant

crushing plant startup sequence & procedure

crushing plant startup sequence & procedure

All the Crushing Plant equipment is interlocked, except for the sump pump, and therefore, the plant must be started from the fine ore bin back. The dust collector and scrubber bottoms pump are interlocked together, and must be started prior to other equipment. The sump pump should be placed in AUTO. The drives should be started in this order:

Normal Crushing Plant Operation After the crushing plant has been brought up to normal operating conditions the operator should attempt to even out the feed to the jaw crusher to the design tonnage of 60 mtph. This is achieved by ensuring that the feed to the crusher maintains an essentially full chamber without ore spilling out. Adjust the speed of the apron feeder with to increase or decrease the feed rate to the jaw crusher and ultimately to the crushing circuit.

The product from both crushers should be visually checked to ensure that each crusher is producing the desired product. If the jaw crusher product increases in size, the cone crusher may become overloaded. Similarly, if the cone crusher product increases in size, the circulating load around the cone crusher will increase, consequently, increasing the load on the cone crusher and decreasing throughput.

The Crushing Plant operator must monitor the cone crusher power draw displayed on the cone crusher ammeter. The ammeter should show no major fluctuations and should read approximately 100 amps. An excessively high power draw on the cone crusher indicates the cone is being overloaded, which may be due to a high feed rate or a blinded screen.

The operator must pay close attention to the cone crusher lube system. A low pressure alarm will sound if there is an abnormally low oil pressure. If this alarm sounds, the crusher will shut down after a timed delay. If the crusher is allowed to operate longer than 2 minutes after the loss of oil pressure, serious damage to the crusher may result. If the pressure gauge indicates pressure above the normal operating pressure, shut down the cone crusher and investigate the problem. Likewise, a high temperature alarm will sound if there is an abnormally high oil temperature in the oil return line. Shutdown the crusher and investigate if the temperature of the oil pipes seems excessive. Low oil pressure or high oil temperature may be caused by several conditions;insufficient oil supply in the lubrication system, a broken oil feed line, oil pump failure or excessive bearing wear in the crusher. Either condition must be thoroughly investigated as to the cause of the alarm.

Although there is no variable control of the beltconveyors in the Crushing Plant, the operator should regularly check conveyor discharge chutes to ensure there is no undue buildup of material. This is especially important if the feedmaterial is clay-like or excessively wet.

The Crushing Plant operator must ensure that the dust scrubber has an adequate supply of reclaim water and monitor flow-meter to ensure that the proper amount of water isbeing recirculated through the scrubber. Under normal conditions, the dust scrubber requires a minimum recirculation of 8 to 10 cubic meters per hour. A lower flowrate will ultimately cause excessive wear on the scrubber and a higher flowrate is a waste of reclaim water and may hinder operation of the grinding circuit.

henan mining machinery and equipment manufacturer - standard operating procedure of crushing plant in cement factory

henan mining machinery and equipment manufacturer - standard operating procedure of crushing plant in cement factory

Posted at: December 10, 2012 . Standard Operating Procedure Of Pulvarizer, details appliciation Iron Ore Crushing Screening Process; Gulin crusher machine ...standard operating procedure cement plant ... mobile screening and crushing operating procedures ... Safe Operating Procedures; ... ball mill cement factory ...

Ore beneficiation equipment, sand making equipment, crushing equipment and powder grinding equipment, which are widely used in various industries such as metallurgy, mine, chemistry, building material, coal, refractory and ceramics.

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