The MEP Multi-Spigot Hydrosizer is a multi-celled hindered settling classifier. Units with up to 10 cells have been supplied for numerous applications.
- Its operation is controlled by two factors:
- An adjustable, evenly distributed flow of upward current water.
- Electronically controlled automatic discharge valves.
The quantity of water used is regulated to support a required size of particle in suspension; thus creating a “column of teeter” within each cell enabling it to produce a number of discrete products of close graded particles.
A supply of upward current water at constant volume and pressure is essential for the successful operation of the Multi-Spigot Hydrosizer. It is preferable to have a head tank providing water to a common distribution pipe. Separate branches provide the upward current water to each cell, individually controlled by a valve in conjunction with a flow meter.
The Teeter Plates evenly distribute the upward current water within each cell to give a controlled and steady condition within the vessel, ensuring optimum performance.
The discharge valves are controlled by an electronic system that monitors the variations within each cell; as the density increases, the discharge valve progressively opens and as the density decreases, the discharge progressively closes. Thus a constant condition is maintained in each cell.
This creates a situation whereby controlled classification takes place and gives immediate response to any variation in the feed material.
Product Features
- Accurate classification of mineral particles.
- Low running and maintenance costs.
- Low energy requirements.
- Purpose designed to suit each duty.
- Compact design that minimises headroom requirements.
- Control systems gives immediate response to variations
in feed rates up to 100% - Proven performance – Worldwide
Used in the production of:
- Close Graded Sands for:
- Glass Manufacture
- The Foundry Industry
- Water Filtration
- Minerals such as:
- Tin Ores
- Lead Ores
- Zinc Ores
- Mineral Sands
Operation
- The feed slurry should be pre-screened to prevent oversize
material entering the vessel and de-slimed and concentrated to
approximately 50% solids w/w.
- The feed enters the machine via the feed chamber, where an
initial sorting takes place thus the first cell is relieved of the
turbulent effect of entering feed.
- The slurry overflows from one cell to the next with the particles
becoming progressively finer. The overflow from the final cell
contains the finest material together with the excess water.
- The upward current water requirements will depend on the duty,
but usually between 0.9 and 2.25 m³/h per tonne of dry solids
treated, according to particle size and specific gravity.
Typical Applications
- The Multi-Spigot Hydrosizer is ideal for treating a feed material containing a mixed range of sizes and converting it into a number of close graded and discrete sizes.
- Where the feed material consists of material with a common specific gravity, the classification will be strictly by size.
- Where the feed material consists of material with more than one specific gravity then it is possible to combine particles of one specific gravity with different sized particles of another specific gravity, thus preparing material for further treatment in gravity concentration devices such as shaking tables.
