Union process

Technical data. Union Process, Inc., Akron, Ohio. 

In the Attritor (Union Process Inc.) a single vertical armature rotates several long radial arms. These are avaUatle in batch, continuous, and circiilation types. Morehouse-Cowles media miUs comprise a... 

Paper, Allied-Industrial, Chemical Energy Workers International Union Process hazard analysis... 

This equipment is manufactured by the Union Process Company and is used widely as a research tool in a number of industries. It is based on an agitated bed principle and has a grind chamber capacity of 750 ml. The unit comes equipped with a variable speed... 

Attritor schematic diagram Reproduced with permission of Union Process Co. house publication... 

Eisenreich, S., Munn, S., Pakalin, S. (2007) Risk assessment of PBDEs in the European Union -process and update. In Proceedings of the 4th International Workshop on Brominated Flame Retardants, Amsterdam, The Netherlands, 24—27 April 2007 (unpaginated). 

Attritors In the Attritor (Union Process Inc.) a single vertical armature rotates several long radial arms. The rotation speeds are much slower than with other stirred media mills, and the grinding behavior in these mills tends to be more like that in tumbling mills than in other stirred media mills. They can be used for higher-viscosity applications. These are available in batch, continuous, and circulation t es. 

Manufacturers There are many manufacturers of stirred media mills worldwide. Major manufacturers of stirred media mills include Netzsch, Buhller, Drais (now part of Buhler), Premier (now part of SPX), Union Process, and MorehouseCowles. Many of these manufacturers have devices specifically adapted for specific industries. For example, Buhler has some mills specifically designed to handle higher-viscosity inks, and Premier has a mill designed specifically for milling/flaking of metal powders. 

Fig. 16 Circulation attritor. (Courtesy of Union Process, Inc., Akron, Ohio.)...

The TOSCO-II process is capital intensive because it requires a large volume of heating gases and mechanically complex equipment the PARAHO and Union processes are also capital intensive because they have long residence time requirements that entail massive hardware. The PARAHO and Union processes are, however, heat efficient as a result of countercurrent shale and gas flow. But the TOSCO process, although having some degree of heat recovery, uses heat relatively inefficiently. 

After batching, the powder was attrition milled (Model HD-01 Union Process, Akron, OH) in hexane at 600 rpm for 240 min in a fluoropolymer coated bucket using tungsten carbide media and a tungsten carbide spindle to reduce the starting particle sizes. The powder was again dried by rotary evaporation. 

Fig. 7.2 Types of mills a SPEX 8000 mixer/mill (SPEX CertiPrep). b Fritsch Pulverisette P-5 four station ball mill (Gilson company), c Model 1-S attritor (Union process) [7]...

Both laboratory- and large-scale attrition mills are available from Union Process. 01-HD series with a drum capacity of 750-1400 ml are very convenient for small-scale synthesis 1-S series with a drum capacity of up to 11 1 are suitable for pilot and optimization purposes, and finally large mills of capacity up to 2300 1 are frequently used in the industry (Figure 2.6). 

Figure 2.6 (a) Schematic representation of a Szagvari mill, (b) Production mill model SD-30 with a tank capacity of 200 i (Graciosity of Union Process). 

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