Loresco type SC-3 is a dust-free
product and, according to EPA extraction tests, is extremely pure and
complies with regulations governing buried products. Utilizing a modified
industrial standard method for testing permeability (API RP-27), SC-3 will
mitigate fluid interchange between aquifers.
Loresco SC-3 is produced specifically for cathodic protection
applications using an exclusive multi-step process. First, a high quality
base carbon with desired characteristics is selected. Next, this carbon is
calcined to a minimum temperature of 1250° C under exacting and controlled
standards. This step results in semi-graphitized carbon particles with
excellent conductivity. Then, to further improve bulk conductivity, the
surfaces of the individual particles are modified to enhance the contact
conductance. This breakthrough in surface alteration ensures maximum
electronic current transfer with positive anode contact. Finally, a
specially formulated surfactant is added to reduce particle surface tension
for compact settling under water.
Loresco SC-3 has a bulk density of 74 lbs. per cubic foot. The fixed
carbon content is greater than 99.35% by weight. The bulk density and high
fixed carbon content coupled with the assured low resistivity medium allows
for longer groundbed life at a lower operating cost.
Loresco SC-3 is the recommended product for high current installations.
Specify Loresco SC-3 Super-Conducting Premium Earth Contact Backfill.
Installation:
Loresco SC-3, due to its dust-free manufacture, is simple to install by
either mixing and pumping or by pouring. With deep anode systems, pumping
from the bottom up is recommended. Loresco SC-3 has superb pumping qualities
due to the addition of surfactants and when agitated in water, takes on the
characteristics of heavy mud. A recommended mix is seven gallons of water
per one hundred pounds. After installing SC-3, allow twenty-four hours
settling time before energizing. The modified surface of the carbon
particles coupled with the action of the surfactants in SC-3 will achieve
positive electrical contact by settling. Vibrating or compacting is not
necessary.
Material Description:
Loresco SC-3 is a surface modified, blended, and sized carbon backfill with
surfactants.
Specifications:
 | Bulk Density: 74 lbs. per cubic foot |
| Predomiantly round particles |
| All particles surface modified for maximum electrical conductivity
|
| Particle Sizing: To be dust free with a maximum particle size of 1 mm
|
| Minimum calcination temperature of base materials is 1250° C |
| Base materials are calcined under ISO 9002 quality control |
| Surfactants are added to assist pumping and settling |
| No de-dusting oils are used during the manufacture of base particles
|
