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Following installation of the M2500 mobile washing plant Kieswerk Kohler GmbH have addressed the issues caused by excess fines in the material at their quarry.
The solution offered by CDE GmbH has also enabled the production of an additional sand product which the company is now able to offer customers.
The raw material being processed by Kieswerk Kohler at the site contains a large proportion of material smaller than 250 microns. With the crushing and screening processes previously employed on the material, the sand was out of specification for use in concrete. “This was causing a problem as local concrete manufacturers are my main customers” explains owner, Thomas Kohler. “I had been working to develop a system which would allow production of concrete aggregates, especially sand. So that it would meet the requirements of the European standards. The solution offered by CDE GmbH has also enabled the production of an additional saleable sand product which I can now offer customers".
In seeking to address the issues raised by the large proportion of minus 250 micron material in the sand and gravel feed Kieswerk Kohler were investigating the option of washing the material after the initial dry screening process. “We were thinking about several different options and ways in which we could correct the gradation curve of the sand in order that it met the required concrete specification” says Thomas Kohler. “When we explained the issue to CDE they came up with a solution very quickly and since it has been introduced the plant is doing exactly what I wanted it to do”.