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Dry substances

Scalping

AMKCO is an expert in sifting all kinds of dry substances. We produce and assemble vibratory separators for the sieve “dry” processes of SCALPING, DE-DUSTING, and CLASSIFYING. These sieve processes can all be carried out by a vibratory separator machine, but each requires a completely different approach. We explain these sieve processes in more detail.

Scalping

Scalping is perhaps the process where a vibratory separator machine is most commonly used. For example, a powder stream containing a minority of foreign parts needs to be cleaned by removing these foreign parts. The powder flow has an average particle size of 0.1 mm (100 microns) and the foreign parts are 2-5 mm. This is simple and almost every vibratory separator will be able to do this with a screen with a mesh size of 1 mm. Unit capacity or tons per hour is often the problem and AMKCO has several solutions to offer.   When the difference between the product and the foreign parts is large enough, we speak of coarse sieves. However, control sieves can also take place in cases where the difference between the product and the foreign parts is small, or where both are very fine. We call this second case fine sieves.

The classic AMKCO vibratory separator machine is equipped with a convex spherical bottom, whereby the product is guided towards a tangentially placed spout. This type of frame has capacity limitations. After all, the product is on its way to the vibratory separator spout in a spiral motion and too high a supply of product will flood the machine. In most cases, the capacity of a sieve mesh (the available sieve surface) is the impediment, but for the applications where this is not the case, a “Scalper frame” is available. A diagonally placed flat bottom, the product quickly leads towards a spout. This scalper frame can be placed in any AMKCO vibratory separator and ensures that the bottom of the vibratory separator does not fill up with the product.

Machines

machines

  • Horticultural filter

DE-DUSTING

Dedusting is undoubtedly the most difficult process in sieve technology. In the case of dedusting, the screen is filled with product, while only a small proportion of fabric is present. Dedusting is, as it were, the opposite of SCALPING sieves. In the case of scalping sieves, the largest quantity of the product falls through the screen and the product is transported through the convex bottom. However, in the case of dedusting, the largest volume is on the screen and the product must be routed to the outlet using vibrations over a flat screen. Standard AMKCO vibratory separators are very suitable for dedusting processes, because the retention time on the screen can be controlled very accurately. However, if a very high capacity is requested, it is important to remove the product from the screen as soon as possible. AMKCO has special Auxiliary Series frames and Auxiliary Discharge frame designs for these higher capacity requirements.

machines

  • Horticultural filter

Classifying

Classifying is the third process within dry product screening. In classifying, a powder flow onto one or more different screen opening is divided into different fractions.  A compromise of supply capacity and residence time on the various screen decks ultimately leads to a product whose quality is optimal. Once again, sieve surface area is the key factor when it comes to the maximum capacity that a machine can achieve.   If there is sufficient sieve surface, the capacity is always guaranteed. Higher capacity applications often required multiple machines.  Not any more as AMKCO has developed the Auxiliary Series (AS) frame, which allows an existing AMKCO vibratory separator to be equipped with a second screen above the existing screen without changing the height of the machine. This in many cases doubles the capacity of the current vibratory separator.

machines

  • Horticultural filter

Working with AMKCO Europe is

Reliable

Service-oriented

Tailor-made solutions

Flexible

Efficient

Fast delivery

Reliable

Service-oriented

Tailor-made solutions

Flexible

Efficient

Fast delivery

AMKCO produces many vibratory separators for sieve processes related to liquids. Think of viscous liquids, dewatering tea leaves from tea, various wastewater applications, and cheese whey filtration. About 65% of our AMKCO vibratory separators are used to process liquids.

Liquid sieves

AMKCO produces many vibratory separators for sieve processes related to liquids. Think of viscous liquids, dewatering tea leaves from tea, various wastewater applications, and cheese whey filtration. About 65% of our AMKCO vibratory separators are used to process liquids.

machines

  • Horticultural filter

Waste water

It is proven that wastewater is significantly cleaner after the removal of floating, dispersed, and settling solids.  As a result, the cleaner wastewater can be reused or discharged. The discharge of high solid content wastewater is often a considerable cost for a company and the discharge of cleaner waste water can significantly reduce this cost.

A vibratory separator is really a self-cleaning filter that extracts solids from a liquid stream and produces a cleaner liquid fraction.  This seems like a simple application, but components such as grease and fibers require cleaning systems that guarantee the permeability of the screen. The AMKCO vibratory separator has the high-quality cleaning systems specifically adapted to the operating situation.  The AMKCO vibratory separator then is at the lowest possible risk of capacity and efficiency reductions due to clogging problems

Machines

  • Horticultural filter
  • Whey screen machine

Membrane filtration

Perhaps the most common application for vibratory separators is in combination with membrane filtration UF (Ultra Filtration) or RO (Reverse Osmosis). Precious membranes intended to rid liquid flows of solid particles at the nanometer level or to concentrate (e.g. in RO) by extracting water are particularly sensitive to coarse parts that unnecessarily burden or even damage the membranes.

Please look at the pages ‘Projects’ and ‘Applications’ with practical examples of our AMKCO vibratory separators.

With an AMKCO vibratory separator as prefiltration, the flow of liquid towards the membrane never has particles larger than a selected size. This is not about the quantity of solids present, but about their size. With a sieve of 32 or 43 microns, the liquid is guaranteed to contain no parts greater than these values.

In this way, you can filter out a large part of the coarse parts in advance, so that the membranes are only stressed by relevant parts and are not damaged by these coarse parts. This allows the life of your membrane filter to be significantly extended and the payback time of your investment significantly reduced.

machines

  • Membrane filter