Gas cooling and particulate collection devices by EnviroCare USA can be found in various aspects of the mining industry.

Examples are:

  • MicroMist Scrubbers on Carbon reactivation kilns for collection of mercury, fumes and fine particulate.
  • Cooling and conditioning of smelter off gases prior to dust collection.
  • Wet ESPs for collection of heavy metals and fumes.
  • Retort Furnaces for extraction of mercury from the mined ore.

In addition, EnviroCare Australia has installed dozens of dry fog dust suppression systems for controlling respirable dust from conveyors, conveyor transfer points, truck dumps, crushers, etc.

State of the art Advanced Wet Scrubber Technology

A true all-in-one pollution control device, the patented MicroMist Scrubber is an advanced wet scrubber technology developed and applied by experienced process engineers. The MicroMist Scrubber removes submicron particulates, condensables including trace metals, and soluble gases while reducing liquid effluent waste streams. We can eliminate the need for multiple pollution control devices such as a dry ESP followed by a wet scrubber for acid gases.

The MicroMist Scrubber was specifically designed to collect submicron particulate at very high efficiencies with low energy input. The MicroMist Scrubber improves upon the original design concepts of a traditional Venturi scrubber by optimizing the sequence of the scrubbing stages inside the vessel. The MicroMist Scrubber is collection of novel gas cleaning devices staged in series and in various combinations to achieve specific emission requirements for each customer.

In addition to superior performance compared to high-energy traditional Venturi scrubbers, the MicroMist Scrubber does not require the same routine maintenance many traditional Venturi scrubbers experience. We can retrofit your existing Venturi scrubber into a MicroMist Scrubber using the same footprint. Let us show you how the MicroMist Scrubber can permanently eliminate the Venturi throat erosion issues and the constant maintenance attention.

Expertise:

    • Harsh process conditions
    • Low pressure drop, high efficiency
    • Meets boiler MACT, SSI MACT 129, and CISWI regulations
    • Numerous nozzle options including sizes and metallurgy
    • Customer Focus
    • Upgrade or new installations
    • Maintains consistent process draft
    • Minimal maintenance
    • MACT and BACT designations

Benefits of MicroMist Scrubbers:

    • Proven performance
    • Lower energy consumption
    • Easy retrofit/minimal outage time
    • Lower equipment cost
    • High efficiency on submicron particulate
    • Acid gas control
    • Maximum collection of condensables
    • Stable fan draft control
    • Minimal waste stream effluent

MicroMist Scrubber typical efficiencies:

    • Particulate >99.5%
    • Condensables 99%
    • Heavy Metals 95-99+%
    • Acid Gases >99%

A compact, high velocity Advanced Wet Electrostatic Precipitator Module

EnviroCare has developed a compact, high velocity advanced wet electrostatic precipitator module that can be integrated into the shell of the MicroMist Scrubber.

Some states in the eastern United States are requiring a wet electrostatic precipitator (wet ESP) final cleanup device on wet scrubbers as BACT. The EnviroCare MicroMist Scrubber will usually meet the emission limits by itself, making a follow-up wet ESP smaller than those sized for other scrubbers.

Our Wet ESP technology was developed by EnviroCare’s highly experienced staff of engineers. EnviroCare holds US Patent #4,194,888 for this unique and highly effective technology.

Expertise:

    • Compact design
    • Advanced controller
    • Ability to segregate fields
    • Proprietary electrode design
    • Quick turnaround
    • Can be applied to a variety of industries

Thermally vaporize water, mercury and Zinc present in gold ore precipitates

EnviroCare’s Mercury Retort Furnace is designed to thermally vaporize water, mercury and zinc present in gold ore precipitates. The thermal energy required is provided by electrically heating the concentrate. By means of a vacuum, the mercury vapor is drawn through a water-cooled condenser where the vapors become liquid and are collected and sold to the commercial market. The uncondensed vapors then flow through a sophisticated scrubber system for thorough cleaning to comply with safety and environmental requirements.

The ore is first conditioned by a leaching and filtering process. The resultant concentrate is then placed into retort boats (metal containers), which are loaded into the retort furnace. The processing temperature is elevated through thermal radiation and controlled by a PLC. Hot gases exit the retort and are subsequently condensed and scrubbed.

Standard size units can process 10 cu ft. of ore concentrate.

Expertise:

    • Efficient Mercury removal from gold ore concentrate
    • Proven success over 20 years
    • Domestic & foreign installations
    • Personnel safety
    • Optional design features
    • Low maintenance