CL Attritors – Stirred Vertical Ball Mill Limestone Grinding System

The economical CL Attritor Stirred Vertical Ball Mill is used for wet grinding limestone for flue gas desulphurization. The process uses limestone feed stock of approximately 6mm in size and wet grinds the limestone to 95% minus 325 mesh. The CL Attritor operates in continuous processing mode. The grinding circuit includes the separation tank, mill recirculating pump, mill product tank, hydrocyclone, hydrocyclone feed pump and all necessary controls. Due to the CL Attritor’s high efficiency, the power consumption for this mill is 50% less compared to conventional ball mills of a similar size. This results in substantially lower operating costs.

The CL Grinding Process

1. The process begins with 1-1/2″ limestone, which is fed from the silo to the crusher.
2. The limestone is reduced to 6mm pieces in the crusher.
3. The crushed limestone is then mixed with water in the Premix Chamber and fed into the CL Attritor Mill.
4. The limestone slurry exits the CL Attritor Mill and enters the Separation Tank.
5. Any oversized particles are pumped back into the Mill while finer slurry overflows into the Mill Product Tank.

CL Attritors for Limestone Grinding

MODEL	HP	Working Media Volume (gallons)	Maximum thru-put (solids)(#/hour)	Dimensions (inches) *W x D x H	Operating Weight (Lbs.)
CL25	40	12.5	2000	45 x 80 x 106	8000
CL50	50	25	4000	50 x 94 x 116	10000
CL100	75	50	8000	56 x 106 x 132	14000
CL200	125	100	16000	65 x 116 x 151	20000
CL300	150	150	24000	70 x 125 x 163	28000
CL400	200	200	32000	74 x 130 x 177	40000
CL500	250	250	40000	78 x 134 x 188	48000
CL600	250	300	48000	81 x 139 x 200	55000
CL700	300	350	56000	87 x 144 x 211	62000
CL800	350	400	64000	90 x 149 x 219	68000
CL900	400	450	72000	92 x 154 x 231	73000
CL1000	450	500	80000	98 x 159 x 240	80000
CL1250	500	625	100000	103 x 164 x 254	94000

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Model CL-5 Laboratory Attritor

The CL-5 Stirred Vertical Ball Mill for Limestone Grinding is a smaller version of the production sized CL Series Mills. It is ideal for research, scale-up and small-scale production. This mill will process in the range of 200-500 pounds of limestone per hour and is equipped with a variable frequency drive (VFD) and a 15 horsepower inverter duty motor. The CL-5 uses 2.5 gallons of grinding media.

ODEL	HP	Working Media Volume (gallons)	Maximum thru-put (solids)(#/hour)	Dimensions (inches) W x D x H	Operating Weight Lbs.
CL-5	15	2.5	400	34 x 51 x 82	1600