Month: February 2021

MAP Continuous Mixer for Bentonite and PAC

Filquip has specified, supplied and installed a MAP Continuous Mixer for Bentonite and PAC powders. The project commenced with R&D works using a MAP lab mixer to ascertain the required mixing residence times and to deliver a proof of quality control in mixing of the Bentonite and PAC (Powder Activated Carbon) powders.

  • Model: WAHV.0500.PO
  • 5m3/hr Mixing Capacity at 50% fill factor, 60 second mixing residence time with 1:100,000 dispersion for maximum mixture homogeneity.
  • 5kw Motor and Gearbox Combination
  • Pneumatic Sampling Device Included

The mixers Filquip supplies by MAP are made to measure from standardised modular components, carefully selected to the relevant mixing process requirements.

WAH Continuous Horizontal Single Shaft Mixers use a single mixing shaft inside a cylindrical mixing drum vessel with an inlet, and an outlet at the opposite end. Ploughshare or inclined blade-type shovel tools rotate as mixing tools in a special arrangement on the mixer shaft in the drum. The result is a turbulence in the mix that constantly involves all the product particles in the mixing process. The formation of dead spots or slow-movement zones in the mixing drum is prevented ensuring precise mixing.

The quality of the mixture is achieved before the product reaches the mixer outlet. Continuous WAH Series Mixers are suitable for dry bulk solids (powders, granules, fibres), dry bulk solids + liquids (moistening + granulating), sludge and low-viscosity pastes.

View the Filquip MAP Mixers Range

Bentonite and PAC Continuous Mixer  MAP WAHV Continuous Powder Mixer Filquip

 

MAP Continuous Mixer for Bentonite and PAC

Dense Phase Conveying vs Lean Phase Conveying

Dense Phase Conveying vs Lean Phase Conveying

Usually when we think of dense phase pneumatic conveying, two basic measurement parameters appear in our mind: Pressure and Velocity.

The combination of these two variables generates the movement of the material, both powders or granules.

In dilute lean phase conveying, the combination of low pressure and high speed makes the particles move while suspended in the air inside the pipeline. Whilst, in dense phase conveying the particles form plugs which are then pushed through the pipeline by compressed air.  Precisely for this reason dense phase conveying method is the best choice in the case of fragile, mixed or abrasive products.

The Dense Phase Pressure Vessels are the main proponents of dense phase technology. They make it possible to move bulk materials from one point to another within a closed pipe, whether horizontal or vertical, by means of a gas (usually compressed air or nitrogen).

Let’s take into account the transport pressure.

Inside a dense phase pneumatic conveyor, the high pressure gently pushes the material inside the pipeline, sometimes with the help of special systems for the introduction of air. Pneumatic conveying always requires a pressure difference between the beginning and the end of the line. This difference depends not only on the length and layout of the line, but also on the concentration of the material within the pipeline. Likewise, the pressure is influenced by the physical characteristics of the product and the flow rate.

The low speed is what most distinguishes dense phase technology from the dilute lean phase one.

Compressed air at the beginning of the line expands as it approaches the end of the line, so that the speed also increases. Within a dense phase transport system, the speed can vary at the point of arrival, but rarely exceeds 10 m/s.

The right combination of high pressure and low speed creates the homogeneous flow of product plugs within the conveyor line.

Dense Phase Conveying

 

 

 

 

 

 

 

 

 

 

 

 

 

Dense Phase pneumatic conveying is extremely flexible in terms of the routing and the length of the pipeline.

The main application fields of pneumatic conveyors are feeding operations of mixers, reactors, packaging machines, and every similar application that requires to handle powders, granules, flakes, and dry bulk.

Pneumatic conveyors are used primarily for granules and powders. Some commonly conveyed products include sugar, flour, coffee, plastic granules, chemicals products, cement, silica sand, feldspar, fly ash, glass cullet, alumina, glass batch mix, and carbon black.

The correct design of a dense phase conveying system has the right balance between pressure and speed in order to prevent the breakage of the material, the wear of the pipeline or the formation of clogging in the case of delicate, abrasive and cohesive materials of those that react to temperature changes.