Color dosing with mobile equipment

Colored architectural concrete is becoming increasingly popular. The production of colored concrete, however, is in many ready-mixed concrete and precast concrete production facilities more often than not a project-related special solution, rather than a standard product. Permanently integrated dosing systems for liquid colors do therefore not always pay off. In such cases, mobile color dosing equipment is an economically attractive solution.

Mobile color dosers are made available to concrete manufacturers project-related on a rental basis by such service-oriented color suppliers as Ha-Be Betonchemie GmbH & Co. KG. And because the equipment can be integrated into the existing production process, no complex interference with the process control system of the plant is required.

Mobile color dosing plants are closed-systems with their own fully-automated, semi-automated or manual control. In general, volumetric systems with semi-automated control are used. These systems consist of a delivery container, a standard container with integrated pump, a bypass valve, a filler valve in the mixing tower and a control in the machine room. The control system regulates dosing of the calibrated amount of liquid color in the compulsory mixer and enables the plant operators good dosing precision. 

A bypass valve is included in the standard equipment so that the liquid color can also be used over longer periods of time. The color can be recirculated if required. Moving the color suspension at regular intervals prevents the solids in the color suspension from settling and ensures a homogeneous aggregate state.

As soon as the color in the floor-mounted container is used up, the ball valve of the delivery container is opened and the liquid color discharges under its own weight into the floor-mounted container. Empty delivery containers are simply removed from atop the floor-mounted container by forklift or wheel loader and exchanged for a full container.

Related articles:

Issue 2019-07 VENATOR

New line of pigment dosing machines

The Davis Colors division of global chemical company Venator has launched three new advanced, automatic, pigment dosing machines that can make the production of colored ready-mix concrete cleaner,...

Issue 2018-04 VENATOR

Launch of new Granufin pigments

Venator, the pigments and additives expert, has developed several brand new color pigment products for the concrete industry. The new products were launched at BetonTage Concrete Solutions 2018 –...

Issue 2016-06 Huntsman

New Granumat 4.0 color dosing system presented

Last April, at Bauma in ­Munich, the Pigments and Additives business division of the international company Huntsman presented its new Granumat 4.0 Color Synthesizer. This color dosing solution is...

Issue 2017-07

Greatest color precision for precast elements and paving blocks

The company Würschum Dosieranlagen, based in Ostfildern, Germany, has now successfully launched the newly developed Mini-Com precision dosing system, initially introduced as an innovation at Bauma...

Issue 2012-07

Decision matrix for best color metering solution

Each producer of concrete products has different needs, different priorities, and goals. For example having a low-cost product strategy versus a quality leadership strategy will result in different...