®208GelActi- High Performance Rheology Modif ier and Strength Optimizer

Mine Back�ll

Product DescriptionActi-Gel® 208 is a low-dose rheology modi�er and strength optimizer that stabilizes mixtures. It provides superior aggregate suspension, and dramatically improves the performance and paste quality of mix designs. When fully dispersed, Acti-Gel® 208 particles form a unique lattice ‘microstructure’ that supports slightly higher yield stress and thixotropy, resulting in a greater ability to suspend both �ne particles and aggregate with reduced segregation. Under shear the �ow properties are enhanced resulting in improved pumpability. This allows increased solids and reduced binder requirements. Please see optimizing recommendations below.

Acti-Gel® 208 is a highly puri�ed Mg-aluminosilicate made from a patented process. It is non- swelling and shear stable in both low and high salt environments, and between pH 2-13.

PackagingActi-Gel® 208 is supplied in liquid and powder form.

PerformanceActi-Gel® 208 is a thixotropic material that suspends particles, reduces segregation, and dramatically stabilizes mine back�ll. During mixing or emplacement �ow is greatly enhanced due to its shear-thinning behavior. This allows solids to be increased signi�cantly and binder levels to be reduced. Acti-Gel® 208 continues to suspend particles under �ow, which prevents segregation, reduces abrasion and eliminates blocking.

Bene�ts:• Reduces binder usage to give cost savings

• Allows increased solids

• Improves �owability

• Maximize safe-pumping distance

• Reduced plugging potential

• Stabilizes paste �ll mix designs

• Reduced cycle time

• Una�ected by water quality, pH or temperature

• Reduced abrasion

• Environmentally friendly

MineralsI N T E R N A T I O N A L , L L C ®

ActiveI n t e g r i t y. I n n o va t i o n . Te a m w o r k . E xe c u t i o n . w w w. a c t i - g e l . co m

3 4 Love to n Ci rc l e, S u i te 1 0 0 , S p a r k s, M a r y l a n d 2 1 1 5 2Te l : 4 1 0 - 8 2 5 - 2 9 2 0

i n fo @ a c t i ve m i n e ra l s. co mw w w. a c t i ve m i n e ra l s. co m

®208GelActi-

Mine Back�ll

Acti-Gel® 208 can be added in the mixing sequence at various stages depending on the application, using a recommend-ed dry dosage range of ~0.03% (total dry weight material basis). Acti-Gel® 208 must be mixed with su�cient high shear to become fully dispersed with the other mix design constituents.

Guidelines for Use

Product Data Sheet, Rev. Jan. 2017

Recommendations and advice concerning dosages, application, performance, and use is provided in good faith, based on our testing, experience, and knowledge of the product under normal conditions. All claims based on performance are believed to be accurate. No guarantee, either expressed or implied, is made with reference to the infringement of any patent. These values represent typical data from samples taken from production batches. They are not considered to be speci�-cations. Results may vary depending upon equipment and procedures. The user of these materials is responsible for determining its suitability for theirapplication with di�erent materials and actual site conditions.

Paste Fill treated with Acti-Gel® 208 shows a large increase in �ow rate that can allow a

signi�cant increase in solids.

Acti-Gel® gives signi�cant compressive strength gain that can allow binder reduction and cost savings.

3d 5d 7d 14d 21d 28d0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

Gold Mine Backfill - Africa

Com

pres

sive

Stre

ngth

(MPa

)

Days

Standard (No Acti-Gel) 0.03% Acti-Gel

7d 14d 21d500

750

1000

1250

1500

1750

2000

Gold Mine Backfill - Australia

Com

pres

sive

Stre

ngth

(kPa

)

Days

Standard (No Acti-Gel) 0.03% Acti-Gel 0.05% Acti-Gel

MineralsI N T E R N A T I O N A L , L L C ®

ActiveI n t e g r i t y. I n n o va t i o n . Te a m w o r k . E xe c u t i o n . w w w. a c t i - g e l . co m

3 4 Love to n Ci rc l e, S u i te 1 0 0 , S p a r k s, M a r y l a n d 2 1 1 5 2Te l : 4 1 0 - 8 2 5 - 2 9 2 0

i n fo @ a c t i ve m i n e ra l s. co mw w w. a c t i ve m i n e ra l s. co m