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3M™ Acid Mist Suppressant FC-1100

3M Product Number FC-1100
Products
  • Designed for acid mist suppression in copper electrowinning processes
  • Created to help you keep your workers and equipment safe
  • Effective at low concentrations
  • Compatible with entire SX-EW circuit
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Typical Properties
Attribute Name
Value
Application
Acid Mist Suppressing in Mining Operations
Brand
3M™
Composition
45-55% Fluorochemical Solids, 45-55% Water
Container Volume
330 Gallon, 5 Gallon, 55 Gallon
Freeze/Thaw Stability
Protect from freezing
Industries
Mining
Net Weight (Imperial)
2900 lb, 45 lb, 500 lb
Product Type
Suppressant
Type
Amphoteric
Viscosity
20 - 100
Volume (Imperial)
330 gal, 5 gal
Volume (Metric)
1249.182 L, 18.927 L
Weight (Imperial)
2900 lb., 45 lb., 500 lb.
Weight (Metric)
1315.4 kg, 20.4 kg, 226.8 kg
Details
  • Designed for acid mist suppression in copper electrowinning processes
  • Created to help you keep your workers and equipment safe
  • Effective at low concentrations
  • Compatible with entire SX-EW circuit
  • Low foaming
  • Minimal interaction at organic aqueous interface and chemically stable
  • Point source acid emissions reduction

3M™ Acid Mist Suppressant FC-1100 is a fluorochemical additive that provides outstanding sulfuric acid mist suppression in the copper electrowinning tankhouse without the formation of a stable foam blanket in the electrowinning cell. FC-1100 suppressant can significantly reduce tankhouse acid mist levels, with no adverse effects to either the solvent extraction or electrowinning process.

3M™ Acid Mist Suppressant FC-1100 is a fluorochemical additive that provides outstanding sulfuric acid mist suppression in the copper electrowinning tankhouse without the formation of a stable foam blanket in the electrowinning cell. FC-1100 suppressant can significantly reduce tankhouse acid mist levels, with no adverse effects to either the solvent extraction or electrowinning process.

Why Does It Work?
The FC-1100 fluorochemical surfactant has been used in the production of copper by hydrometallurgy for more than 20 years now as an effective means of point source emissions reduction in the suppression sulfuric acid mist in copper electrowinning tankhouses. This is the point in the process where the copper is electrolytically deposited in cells comprised of insoluble lead anodes and stainless steel cathodes. A high voltage current is applied across the cells and the copper is deposited cathodically from a sulfuric acid based electrolyte. The copper electrolyte is then circulated through the electrowinning tankhouse where the Cu++ is electrolytically reduced to Cu0 for copper cathode production. The anode reaction generates O2 from the breakdown of water and it is this gas evolution that produces a fine sulfuric acid aerosol in the tankhouse.

There is a significant worker exposure issue when the O2 bubbles reach the surface of the electrowinning cell and burst, forming a sulfuric acid aerosol in the tankhouse. Surfactant concentrations on the order of 10 ppm active solids can reduce the measured level of sulfuric acid mist in the tankhouse by as much as 50%.

Mist suppression studies in production electrowinning cells have shown that 3M acid mist suppressant FC-1100 can consistently provide exposure levels of less than 0.2 milligrams of sulfuric acid mist per cubic meter of air at normal use concentrations. FC-1100 suppressant presents a significant advance over conventional fluorosurfactants by its ability to reduce tankhouse acid mist levels without the formation of a stable foam blanket. The formation of a stable foam tends to deplete the conventional surfactant from the electrolyte because a large percentage of the available surfactant accumulates in the foam, making the surfactant unavailable to reduce acid mist. The use of a low foaming product, like FC-1100 acid mist suppressant, allows more of the surfactant to remain in solution, significantly lowering product loss rates and maintaining a more consistent level of acid mist suppression in the tankhouse.

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