The HydroFloat recovers particles +2x coarser than conventional flotation cells, which allows for a shift in the economic optimum grind size, and in turn increases profitability and improves environmental sustainability of mining projects.

To meet society’s needs for critical mineral resources, the mining industry must develop projects that are socially accepted, environmentally sustainable, and economically profitable. One of the processes that have highest potential to overcome some of these challenges is Coarse Particle Flotation (CPF). Eriez has developed and patented the HydroFloat, an innovative fluidized-bed coarse particle flotation machine with demonstrated commercial success in base metals and industrial minerals applications for nearly 20 years.

StackCell flotation reduces conventional flotation residence time requirement by 75 to 85% and increases selective recovery of fine particles and slow floating minerals, which increases profitability and improves environmental sustainability of mining projects.

For mining companies that want to minimize environmental impacts of flotation circuits and maximize profitability, the StackCell offers reduced flotation circuit size and power consumption while delivering superior mineral recovery and concentrate grades.

Advantages 

• Increase mill production and revenue
• Reduce carbon footprint and environmental impacts
• Increase project NPV
• Reduce CAPEX for greenfield projects and brownfield expansions
• Increase recovery of fine particles
• Increase concentrate grade

Eriez has supplied more than 1,000 flotation columns throughout the world in mineral concentrating and purification applications that include iron ore, base-metals, gold, industrial minerals, fertilizers (phosphate and potash), energy, and specialty applications such as oil/water separation.

Eriez Flotation's Advantages in Columns include:

• A large group of knowledgeable engineers throughout the world to design and support your application.  This includes some with more than 30 years of experience in supplying column applications.
• Offering test-services.  We operate a central test lab and test columns that can be brought to site that can be used to predict metallurgical performance and de-risk the installation.
• Provides a variety of column and sparging technologies so we can recommend and design the most appropriate equipment for the application.  In some cases, we have optimized columns for particular mineral systems such as the PhosPro™ for phosphate, the K-Pro™ for potash, and the BitPro™ for bitumen.

Eriez CrossFlow Separator is a highly efficient hydraulic classifier for the separation of material based on particle size, shape and/or density. This technology can also be used for desliming, counter-current washing and acid neutralization of minerals.

The CrossFlow separates particles based on hindered-settling principles providing an economical and efficient means of classifying material such as silica and frac sands, mineral sands and industrial minerals.

Ores containing a mixture of high- and low-density components can also be upgraded based on their difference in specific gravity. Examples include iron ore, and heavy mineral with silica contamination and run-of-mine coal containing various ash-forming components such as rock and pyrite.

The hindered-settling environment creates the optimum conditions for efficient counter-current washing to rinse, clean, and neutralize ore prior to secondary unit operations.

Applications include:

• Sizing and Classification
• Density Separation and Concentration
• Washing and Neutralization of Minerals

• Modest capital cost
• Very low maintenance cost VERY accurate feed split
• Reliable, trouble-free operation
• Slurry driven - no motors
• Unique internal launder provides
• Improved distribution when one or more outlets are off line

The Sparging Factor - Improving the operating efficiency of flotation columns, leach tanks and other processes that depend on the generation of fine gas bubbles

In mineral flotation applications, Eriez Flotation SlamJet sparging systems promote the attachment and recovery of hydrophobic particles through the generation of a fine bubble dispersion that is evenly distributed across the flotation column. Eriez Flotation sparging systems are designed to generate a large amount of bubbles at the optimum size for the given application. Specifically, they are designed to generate high rates of bubble surface area which guarantees a high probability of attachment and improved recoveries. In leaching and other hydrometallurgical applications, SlamJet; spargers improve the process kinetics of the vessel contents by ensuring a high rate of gas dissolution.

• Ensure a higher attachment probability... higher recovery of hydrophobic particles
• Produce higher recoveries for ultra-fine material... greater concentrate production Improve bubble/particle collision rates... lower reagent costs
• Have no direct impediments to flow... longer wear life with better materials of construction

• Bench-top batch testing
• Batch milling (ball, rod)
• Continuous milling (ball, rod)
• Steady-state column flotation testing
• High and low gradient magnetic separation
• HydroFloat
• CrossFlow
• StackCell