CrossFlow Classifiers
A high capacity teeter-bed separator
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
NOVEL FEED PRESENTATION SYSTEM IMPROVES SEPARATION EFFICIENCY
Unlike traditional teeter-bed technologies, the Eriez CrossFlow uses a unique "tangential" feed presentation system to introduce feed into the top of the separation chamber. This novel approach can provide unit capacities up to three times that of a conventional classifier and eliminates particle misplacement caused by excessive feed volume and plant fluctuations.
In the CrossFlow, feed particles descend against a rising flow of teeter water established by a uniform system of water injection pipes located in the base of the main separator housing. Based on the settling characteristics of the ore and the water addition rate, a fluidized bed of solids is established in the separator. Particles with a low settling velocity (fine/low density) that cannot penetrate the teeter bed are carried over the top of the separator with the bulk of the fluidizing medium. Particles with a high settling rate (coarse/high density) settle through the fluidized bed and are eventually discharged at a high solids content through the underflow control valve.
CrossFlow Features
- High capacity
- Precise, efficient classification
- Improved efficiency with fluctuating and/or dilute feed streams
- Easy, on-line cut-point control using true density measurement
- Fully automated discharge control system
- Dewatering cone for consistent underflow discharge characteristics
Product Table
| Item Name | Part Number | Description | Price | |
|---|---|---|---|---|
| 2x8-inch Laboratory CrossFlow, 30-inch height | • Acrylic vessel with feedbox, overflow outlet and underflow valve connection • Dewatering cone • Elutriation water manifold and associated piping • Stainless steel support frame • Teeter water flow meter • Type A Underflow control Valve • PID Loop controller and I/P Converter housed in Nema4 Enclosure • 115VAC, 1PH, 60Hz, 0.025A |
On Request | Add | |
| 9x16-inch Pilot CrossFlow - Maximum Feed Rate: 2.5-3.0 stph | • Stainless Steel vessel with overflow outlet and underflow valve connection • Dewatering cone • Internal elutriation water distribution manifold, and associated piping • Flanged above manifold to promote ease of access and maintenance • Stainless steel support frame • Teeter water flow meter • Underflow control Valve • PID Loop controller and I/P Converter housed in Nema4 Enclosure • 115VAC, 1PH, 50/60Hz, 1A |
On Request | Add |