MINING

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 Mining-Overview

 Acti-Gel® 208 in Mining Applications

 

 

 

Acti-Gel® 208 provides superior particle suspension, stabilizes mixtures, and dramatically improves the workability, flowability, pumpability and performance of high solids formulas.

 

  •  Acti-Gel® 208 uses include Slurry Pipelines, Tailings, Backfill, Mine Seals and Shotcrete applications.
  •  Acti-Gel® 208 helps build the carrier fluid preventing coarse particles from riding on the bottom of the pipe.
  • Acti-Gel® 208 enables  increased flow rates and lower pressure loss.
  • Reduced frictional losses = reduced pipe wear.
  • Acti-Gel® 208 is not affected by attrition, abrasion, high shear, grinding or pH. 
  • Acti-Gel® 208 works best in water and brine based systems where particulate solids are present.
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  • Improves flowability = prevent / eliminate blockages
  • Increased Solids = enables higher solids slurry / improves profitability
  • Reduced Pressure Loss

 

We can show how Acti-Gel® 208 can save you money and increase the solids of your slurries.

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Mine Backfill

 

Acti-Gel® 208 High Performance Rheology Modifier & Strength Optimizer for Mine Backfill

 

Acti-Gel® 208 is a thixotropic material that suspends particles, reduces segregation, and dramatically stabilizes mine backfill. During mixing or emplacement flow is greatly enhanced due to its shear-thinning behavior.

This allows solids to be increased significantly and binder levels to be reduced. Acti-Gel® 208 continues to suspend particles under flow, which prevents segregation, reduces abrasion and eliminates blocking.

 

Benefits:

 

  • Reduces binder usage to give cost savings
  • Allows increased solids
  • Improves flowability
  • Maximize safe-pumping distance
  • Reduced plugging potential
  • Stabilizes paste fill mix designs
  • Reduced cycle time
  • Unaffected by water quality, pH or temperature
  • Reduced abrasion
  • Environmentally friendly

 

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Mine Seals

 

Acti-Gel® 208 High Performance Rheology Modifier & Mix Stabilizer for Mine Seals

 

Acti-Gel® 208 is a thixotropic material that suspends particles, reduces segregation, and dramatically stabilizes concretes. During mixing or emplacement flow is greatly enhanced due to its shear-thinning behavior.

 

On removal of shear, the rate of thixotropic rebuilding of the lattice structure is exceptionally fast, which provides:

 

  1.   superior cohesion and reduced rebound
  2.   rapid development of green strength and shape stability
  3.   excellent anti-washout properties
  4.   reduction in hydrostatic pressure

 

When used in an optimized mix design, Acti-Gel® 208 has been shown to increase green strength, decrease rapid chloride permeability, and reduce efflorescence – all with outstanding stability and compaction.

 

Some designs may result in a reduction in measured slump. Please see optimizing recommendations in our Product Sheet.

 

Acti-Gel® 208 complies with ASTM C 494, Type S.

 

Acti-Gel® 208 complies with AS 1478-2000 Type SN.

 

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High PErformance Shotcrete

 

Acti-Gel® 208 High Performance Rheology Modifier & Mix Stabilizer for High Performance Shotcrete

 

  •  Acti-Gel® 208 is a low-dose rheology modifier and anti-settling agent that stabilizes mixtures, provides superior aggregate suspension, and dramatically improves the performance of sprayed concrete for mining operations. 
  • Acti-Gel® 208 promotes a cohesive concrete that stabilizes nearly the instant energy is removed from the pumping system. 
  • This is perfect for high performance shotcrete where high lifts, thick walls, and one-pass overhead applications are desired. 

 

Reduces Shotcrete Costs:

 

  • Decreases rebound
  • Reduces/eliminates silica fume
  • Reduces dosage of nozzle accelerators up to 50%
  • Increase application thickness up to 100% in a single pass

 

Increases Quality and Workability:

 

  • Reduces airborne particles when spraying
  • Improves adhesion, cohesion and compaction to achieve higher lifts
  • Sprays concrete without sagging or sloughing
  • Reduces time to reach 1MPa (145psi)
  • Improves re-entry times in underground applications
  • Allows lower quality aggregates and manufactured sands to be utilized
  • Improves and extends workability
  • Reduces /eliminates effloresence

 

Please see optimizing recommendations in our Product Sheet.

 

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Slurry

 

Acti-Gel® 208 High Performance Rheology Modifier & Mix Stabilizer for Slurry

 

Acti-Gel® 208 is a thixotropic material that suspends particles, reduces
segregation, and dramatically stabilizes high solids slurries. During
mixing and transport, flow is greatly enhanced due to Acti-Gel® 208's  shear-thinning behavior. 

 

On removal of shear, the rate of thixotropic
rebuilding of the lattice structure is exceptionally fast, which prevents i)
particles from dropping out of suspension ii) eliminates hard-packing,
and iii) facilitates safe and easy start-ups, even after periods of extended shutdown.

 

Benefits:

 

  • Improves flowability and settling properties
  • Enables higher solids slurry
  • Minimizes plugging potential; safe and easy start-ups
  • Reduces water consumption and down time
  • Decreases erosion and corrosion effects
  • Reduces pressure loss along the pipe line; increases flow rate


Please see optimizing recommendations in our Product Sheet.

 

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Tailings

 

Acti-Gel® 208 High Performance Rheology Modifier & Mix Stabilizer for Tailings

 

Acti-Gel® 208 is a thixotropic material that suspends particles, reduces segregation, and dramatically stabilizes high solids slurries. During mixing and transport, flow is greatly enhanced due to Acti-Gel® 208's shear-thinning behavior. After the tailings are deposited in the tailings dam, Acti-Gel® 208 prevents segregation which enables better particle packing, denser beds, and improved water recovery.

 

 Benefits:

 

  • Improves flowability and settling properties
  • Enables higher solids slurry
  • Minimizes plugging; safe and easy start-ups
  • Reduces water consumption and down time
  • Decreases erosion and corrosion effects
  • Reduces pressure loss along the pipe line; increases flow rate.

 

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Portable Flow Loop

 

The PFL is a mobile unit that can be taken to our Customers Location for on-site demonstrations of how Acti-Gel® 208 works with the carrier fluid to prevent the coarse particles from settling/dragging on the bottom of the pipe. This results in increased flow rates and lower pressure loss, which enables reduced frictional losses and reduced pipe wear.

 

A schematic drawing of our PFL is shown below.

 

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The Portable Flow Loop is housed in 2 – 20 ft. Containers:

  • Operator Container box weighs about 10,000 lbs.
  • Pump Container weighs 14,500 lbs.

 

The Portable Flow Loop contains the following Equipment:

 

Pipelines:


Two pipe diameters, 102mm (4”) and 154mm (6”) with approximately 9m (30′) of pipe in the loop.

 

Pump:


The flow loop system is equipped with a 75 HP Moyno progressive cavity positive displacement pump.

 

Electric:


The unit requires roughly 65 KW – 480V at 156A or 600V at 125A.

 

Instrumentation:

 

  • Four (4) Endress and Hauser industrial pressure transmitters.
  • One (1) Rosemount magnetic flow meter
  • Flow Loop RevC.vi software file customized for the mobile loop.
  • National Instruments (NI) LabVIEW Software & Instrumentation. Portable Flow Loop System.

 

Loop Volume:

 

  • Hopper volume = 0.8 M3 (28.3 FT3)
  • Pipe Loop Volume = 0.08 M3 (2.83 FT3)
  • Total Volume = 0.88 M3 (31.13 FT3)

 

Numerous Flow Loop and Plant trial data have proven the ability of Acti-Gel® 208 to deliver several key benefits when used as a Suspending agent in Slurry Pipeline Transportation:

 

  • Improves flowability = prevent / eliminate blockages
  • Increased Solids = enables higher solids slurry / improves profitability
  • Reduced Pressure Loss

 

Let Active Minerals International, LLC show how Acti-Gel® 208 can save you money and increase the solids of your slurries. Our Portable Test Flow Loop is available for on-site trials. Contact us for an appointment at 410-825-2920.

 

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