Magneco/Metrel

Installation of Metpump AP into Weak Sulfuric Acid Trench

MAGNECO/METREL, INC.223 Interstate Road

Addison, Illinois 60101USA

www.Magneco-Metrel.com

Trench Before Tear Out

16’L x 24”W x 16”D Removed and Cleaned Out

Trench Form Installed with Grease for easy release. Foam utilized at each

end of Form to positively seal.

Form weighed down to prevent floating.

Installation Details

Metpump AP mixed in 150 lb. batches. Binder content was minimized at 13% by dry weight. Paddle style mortar mixer used. Metpump AP transferred from mixer to trench via

wheelbarrow. Pencil vibrator utilized to flow Metpump AP underneath

form. The product was cast on near side of form, and allowed to flow underneath and build up on the opposite side. This prevents trapping air under form.

Product was installed in 2.5 hours. Vegetable oil sprayed on to seal surface of product. Dry out tent built over the new trench. 190,000 BTU bullet heater utilized for 14 hours. Forms pulled after 16 hrs. of dry out time.

Finished Pouring

Dry Out Tent

Finished Trench after Forms are removed.

Trench ready for service after new grates are installed.