CEMEX invests in a cone crusher

CEMEX Deutschland operates the former Taunus quartzite plant on an around 40-hectare site in Wehrheim. CEMEX’s Gravel & Chipping South/Southwest Division includes 16 operations in the German states of Bavaria, Hesse, Thuringia and Alsace. The first mining rights in the “Steinernes Meer” range of mountains were awarded to the Taunus quartzite company back in 1899.

With 14 employees at, Cemex extracts around 700 000 tpa rock its Wehrheim site (Fig. 1). The extracted products are used for hard surfacing and road construction, the concrete and concrete products industry as well as for the sand-lime brick and refractories industry, processed in compliance with relevant requirements and standards. Special high-quality chippings, for example like the quartzite chippings used to lighten the colour of asphalt surface courses are sold all over Germany. In darkness or bad weather, the lightness of the quartzite chippings improves visibility and therefore contributes to traffic safety.

Work safety is a priority at CEMEX every day. The newly defined blasting direction and the new Sandvik CH660 cone crusher (Fig. 2) are responsible for the reduction of plate formation and material bridging in processing of the material. A crusher from a competitor previously integrated in the production process had to be replaced. Based on its long-standing contact to Sandvik, the company soon got talking. It specified that the future cone crusher should produce a higher percentage of 0/32 mm size particles. The background to this was that a finer crusher tool was to be used in the downstream crushing stage to increase the percentage of 5/8 and 8/11 mm grades. The integrated ASRi control has the advantage that when the crusher is fed with sometimes very different rock, you can keep a constant eye on the material flow, the energy consumption and the wear from the display. Overall planning was coordinated in cooperation with Gerwin, the company responsible for the structural steel work and any necessary modifications. Within 14 days, the refit work on site had been completed and the new Sandvik CH660 cone crusher was commissioned (Fig. 3).

The expected success: lower time requirement, higher throughput rate, less material in circulation, was confirmed directly after the run-in phase. “With a throughput rate of around 300 t/h, a 30- to 40-%-higher amount of the planned asphalt grade could be achieved,” says Production Manager Thomas Ziegler. In line with the requirements of the application, the crushing chamber CX/D is used – this is one of nine possible crushing chamber variants. In the future, the much finer discharge will allow the existing downstream H4800 gyratory crusher to be fitted with a finer crushing chamber, from M at present to MF. Thanks to the selected crushing chamber configurations of the Sandvik crushers, this can be done without any great expense.


Related articles:

Issue 04 /2017

Sandvik launches powerful secondary stage crusher

The new Sandvik CS550 cone crusher launched at CONEXPO-CON/AGG is a powerful secondary stage crusher for 700 to 750-tonne applications. In addition to flexibility and sheer tonnage, it offers advanced...

Issue 09/2015

Sandvik crushers producing in Korea

In recent years some of Korea’s leading aggregates producers have started to invest in Sandvik crushing equipment. There were now further orders from Korean companies for CH430 and CH440 cone and...


Sandvik launched upgraded 800i cone crusher series with new Automation & Connectivity System, ACS-c 5

The Sandvik cone crusher design philosophy is based on continual evolution of parts, materials, and technologies to improve the reliability, availability, and productivity customers rely on. That...

Issue 05/2016

High performing cone crusher revolutionizes production in the UAE

National Quarries LLC was founded in Siji, Fujairah in the United Arab Emirates in 2002. The company is today considered to be one of the leading aggregate suppliers in UAE with approximately 150...

Issue 10/2018 Diversity

Mason Brothers keep on crushing with Sandvik

P?embrokeshire based Mason Brothers Quarry Products has a longstanding relationship with Sandvik which goes back to the 1990s. The family run company now produces in excess of 100?000 tons of high...