X-Grid Static Mixer (Type GX)

The GX static mixer has been used successfully for the laminar flow mixing and/or dispersion of viscous fluids for over 25 years. It is a high performance static mixer capable of mixing materials with equal or very large differences in viscosity and volumetric ratio. Mixing is accomplished in a short length with a very high degree of mixing.

Figure #1: GX static mixer with 4-mixing elements
Figure #2: GX mixing elements are available in sizes as small as 9.8 mm (0.39”) diameter and in much larger standard and custom static mixer materials and sizes.
Mixing Capabilities
  • Mix fluids with similar viscosity
  • Mix fluids with high and low viscosity (1 million : 1)
  • Mix fluids with large differences in volumetric ratio (1,000 : 1)
  • Disperse and mix polymers with blowing agents
  • Thermal homogenization
  • Viscosity homogenization
Applications
  • Polymer manufacture and processing
  • Two (2) component viscous materials such as Liquid Silicone Rubber (LSR), adhesives, polysulfide, sealants, epoxy resins, polyurethanes, etc.
  • Plastics Extrusion
  • Food processing
Figure #3: Homogeneous mixing with GX static mixing elements Geometric Configuration Variables The standard GX mixing element (Figures #1 -3) is constructed with 8-mixing bars across its diameter and with a 45o blade angle relative to the pipe axis. Depending on process requirements, the number of mixing bars and the blade angle can vary (Figures #4 - 5).
Geometric Configuration Variables
The standard GX mixing element (Figures #1 -3) is constructed with 8-mixing bars across its diameter and with a 45o blade angle relative to the pipe axis. Depending on process requirements, the number of mixing bars and the blade angle can vary (Figures #4 - 5).
Figure #4: GX-L static mixer with 4-mixing bars and a gentle 30o blade angle relative to pipe axis
Figure #5: GX-LR static mixer with 4-mixing bars, a gentle 30o blade angle relative to the pipe axis and where each ellipse blade set is oriented 90o relative to the adjacent set.
Materials of Construction, Housings and End-Connections
The GX static mixer can be supplied in most materials of construction, pipe/tube housings with virtually any end connection (Figure #6). GX-P mixing elements in 9.8 mm outside diameter size are also available in plastic construction (Figure #7).
Figure #6: A typical GX inline mixing installation includes mounting inside a pipe with flanged ends, threaded ends or beveled ends prepared for welding

Figure #7: Plastic GX-P mixing elements in 50% glass-filled Nylon and Polypropylene construction
History of GX Static Mixing Structure
The X-Grid static mixer structure was invented by Bayer AG of Leverkusen, Germany in the early 1980's. Bayer used the X-Grid static mixer extensively in their polymer plants and subsequently licensed the design to Sulzer Chemtech of Winterthur, Switzerland who trademarked the design as the SMX* static mixer. Sulzer published a tremendous amount of fundamental high quality R&D work on the SMX structure and commercialized the SMX static mixer in tens-of-thousands of successful installations. The founders of StaMixCo held key technical and management positions in the Koch Engineering (USA) - Sulzer Chemtech (Switzerland) team that commercialized the SMX static mixer. Bayer licensed their 2nd generation version of the X-Grid static mixer to StaMixCo which is branded as the GXR static mixer with integral support ring around the X-Grid mixing bars (see StaMixCo GXR section of this web site). The GX static mixer in this web page is StaMixCo's version of the Sulzer SMX static mixer.

* StaMixCo is not a distributor of or affiliated with Sulzer Chemtech. SMX is a brand and trademark of Sulzer Chemtech.

More Information
Technical Bulletin (pdf 736 kb)
Customer Specification Questionnaire (Excel 33 kb)
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