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Backfill
LORESCO
SC-3®
Super Conducting
Earth Contact Backfill
Premium Earth Contact Backfill
for high current anode systems
which mandate
a low resistivity medium
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Particles
before coating |
Particles
after coating |
Loresco type
SC-3 is the finest earth contact backfill in the Loresco line of
products. SC-3 is designed specifically for demanding anode systems
which mandate a low resistivity medium. SC-3 is dust free 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 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 is already acknowledged
around the world as a leader in cathodic protection. A dramatic
breakthrough in over 30 years of research, Loresco'a SC-3 backfill
once again defines the standard for quality and performance in the
cathodic protection industry.
Formulation
Loresco SC-3 is produced
specifically for cathodic protection applications using an exclusive
multi-step process. First, a very high quality base carbon with
desired characteristics is selected. Next, this carbon is calcined
to a minimum temperature of 1250°C under very exacting and
controlled standards. This step results in semi-graphitized carbon
particles with excellent conductivity. Then, to further improve the
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.
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 7 gallons of
water per 100 lbs. After installing SC-3, allow 24
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
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Fixed carbon: 99.35%
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Ash:
0.6%
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Mositure: 0.05%
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Volatiles: Nil at
950°C
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Bulk Density: 74 lbs. per cubic foot.
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Predominantly round particles.
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All particles surface modified for
maximum electrical conductivity.
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Particle Sizing:
Dust free
with a maximum particle size of 1 mm.
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Minimum calcination temperature of base materials in excess of
1200°C.
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Base materials calcined under
ISO 9002 quality control.
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Surfactants added to assist
pumping and settling.
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No de-dusting oils used during
the manufacture of base particles.
Shipping Data
Loresco SC-3 is shipped in 50 lb (22.7 kg) coated, woven polypropylene bags. SC-3 may be stored
outside for limited periods (not to exceed 400 hours of sunlight).
Pallets are available with 50 bags per pallet. Proven
export packaging is also available.
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