The circulation grinding Attritor (“Q” machine) is a combination of an Attritor and a large holding tank which is generally about ten times the size of the Attritor. The unique principle of the “Q” Attritor is the high circulating (pumping) rate, which results in a faster grind and a narrower particle size distribution.
he circulation Attritor is used for difficult to grind and disperse materials and for the ultimate in micron size and quality. The main advantage of the “Q” series is the very narrow particle size distribution that can be achieved.
Large quantities of material can be ground with a smaller investment of grinding media and Attritor equipment. The slurry can be continuously monitored. Additional ingredients can be added to the premix tank at any time during the grinding, with sensitive materials being added near the end of the grinding cycle. Excellent temperature control is possible, since the slurry spends only 20-30 seconds in the grinding chamber and has plenty of time to be stabilized in the holding tank.
“Q” series Attritors are available in sizes ranging from the laboratory size Q-2 model up to the large-scale production model Q-100. For very large production, several Q-100 Attritors can be hooked up to a single holding tank.
Circulation Attritors designated as “QL” include specially configured arms and disks for special applications and increased performance.
A variety of accessories meeting different conditions, from cover seals for a totally enclosed system to metal-free systems, are available.
Engineering Data
ATTRITOR MODEL
Q-03A^
Q-03B^^
Q-2/QL-2
Q-6/
QL-6
Q-15/
QL-15
Q-25/
QL-25
Q-50/
QL-50
Q-100/
QL-100
Grinding Tank Capacity (gals)*
0.37
0.37
2.6
8.2
17
27.5
56
111
Media Volume (gals)*
0.30
0.30
2.2
7.5
15
25
50
100
Recommended Holding
1
2 or 3
5 or 10
75
150
250
500
1,000
Tank Capacity (gals)
HP**
1
1
3-5
7.5-15
15-25
25-40
50-75
100-150
Pumping Rate*** (gpm)
0.4
0.4
3.5
11
22
35
70
130
Total Height (A)
42″
75″
82″
74″
86″
96″
120″
124″
Base to Discharge Spout (B)
–
–
–
32″
37″
43″
53″
59″
Floor Space (W x D)****
29″27″
43″33″
44″49″
33″x46″
37″x53″
41″x60″
50″x70″
63″x78″
Weight (lbs) w/o Media***
330
640
1500
1800
3000
4000
6500
9900
Dimensions and weights are approximate. ^Q-03A – Bench Top. ^^Q-03B – With gear pump, large holding tank and mounted on frame riser. Circulation Attritors designated as “QL” include specially configured arms and disks for special applications. *Less for lined tanks. **With high density media larger than 3/16″, and with QL models, higher horsepower is required. ***Pumping rate is somewhat lower with ceramic grinding media or higher viscosity slurries. ****Dimensions and weights are for complete system.