Gravel & sand and the rock of the year

Dear Readers

I am a great fan of flowers, trees, birds and also of the rocks of the year. Thus, the attention is frequently focussed on forgotten species or lets us discover rocks completely anew. Diabase - selected as the rock of the year 2017 by the Federal Association of Mineral Raw Materials (MIRO) (see p. 30) - is very weather-resistant and is distinguished by a very high density, i.e. 2.95 up to 2.95 g/cm³. Already in the Stone Age, tools and weapons were made out of diabase. Still today, it is widely used - from the production of ashlar up to the manufacture of exacting chipping and crushed stones. The official ceremony regarding the selection of the rock of the year will take place in Bad Berneck on 28 April 2017. On this occasion the Federal Association will publish an accompanying pamphlet (http://www.bv-miro.org).

The main topic of this issue is gravel & sand. On page 38, RTH J. Koops GmbH & Co. KG describe their experience gained with a new vibrating screen system at their extraction facility in Zarrentin. Separation is also described on page 40 - the new screening machine SM 720 SA Plus can be used in gravel and sand pits, but also in recycling companies, composting and earth plants or in civil engineering contracting firms. To be able to handle the sand and gravel produced, the new transhipment excavator 850 E loads the raw materials onto vessels, trucks or railway containers - in the port of Ijmuiden it handles up to 900 t/h.

Many other articles report on new projects, products and ­measurement techniques regarding mineral processing.

Wishing you enjoyable reading

Related articles:

Issue 2017-03

From ballast to primary rock flour

Diabase has been selected as Rock of the Year for 2017. What sets this rock apart is its versatility. It is just as much in demand for sculpting and ashlar production as for producing high-grade...

more
Issue 2013-09

Management of MIRO again complete

The board of directors of the Federal Association of Mineral Resources (MIRO) has appointed Dr.-Ing. Olaf Enger (51) as the new General Manager (Fig. 1). The graduate mining engineer has more than 20...

more
Issue 2010-05

Relocation to Dresden Forum MIRO, Dresden/ Germany, (27–29.10.2010)

After the overwhelming success of the forum last year, the Cologne- based Federal German Association of Mineral Raw Materials (Bundes­verband Mineralische Rohstoffe e.V. – MIRO) decided to...

more
Issue 2012-1-2

Merger between German raw material associations

As of 19.10.2011, the activities of Germany’s federal associations of the aggregates industry have been bundled completely under the umbrella of MIRO (Fig.), the Bundesverband Mineralische...

more
Issue 2015-09

7th ForumMIRO

The Federal Association of Mineral Raw Materials invites companies from the gravel, sand, quartz and natural stone industries as well as equipment manufacturers and service providers to participate in...

more