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Issue 01-02/2011

Progress

Improving the profitability of copper ore processing

1 Increasing grinding efficiency with the improved Vertimill Having acquired the licence in 1979, Metso (then Koppers) has exclusively supplied the Vertimill and steadily further developed it....

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Issue 01-02/2011

Thermo-mechanical treatment

Study of the factors influencing thermo-mechanical treatment for recycling used concrete

1 Introduction Concrete is the most commonly used building material in our time. Around 8000 mill. t concrete are produced annually worldwide [1], including around 250 mill. t in Germany [2] and...

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Issue 01-02/2011

The future of crushed sands?

Influence of the sand grain shape on the working properties of SCC mortars

1 Introduction Crushed sands are usually a by-product of the production of ballast and chippings, accounting for up to 20% of the yield. With simple comminution methods, crushed sands with a fine...

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Issue 01-02/2011

Double and triple

ZEMMLER® Siebanlagen has been manufacturing the MULTI SCREEN® MS 2001 mobile double barrel trommel in Germany since 2007. With the launch of the larger trommel ZEMMLER MULTI SCREEN® MS 5200 in...

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Issue 01-02/2011

Water recycling top of the agenda for washing plant operators

The inclusion of water recycling equipment on washing plant installations has risen dramatically in recent times as operators realise that in addition to the altruistic benefit of protecting the...

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Issue 01-02/2011

Logistics in mining and minerals

Industrial minerals are shipped across the globe in large quantities demanding efficient logistics to both minimise the cost of transportation and the carbon footprint. The Aumund Group have developed...

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Issue 01-02/2011

Reduced maintenance and extended conveyor belt life

One of the challenges for Superior Midwest Energy Terminal (Fig. 1) was the ambitious loading schedule, which doesn’t afford much opportunity for maintenance and equipment changes. Downtime is...

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Issue 01-02/2011

New spherical roller bearings for vibrating machinery

NSK has developed new long-life, spherical roller bearings for use in vibrating machinery at mining facilities (Fig.). Vibration-intensive equipment is often used at mining facilities: vibrating...

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Issue 01-02/2011

Metering and blending as needed

Perfect processing, clean screening – a major order is in the offing. But the client is demanding a special unbound aggregate blend for road base courses. He cites the exacting requirements for the...

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Issue 01-02/2011

Industrial growth at reduced emissions – facts or fiction? 10th Conference on high temperature filtration of Evonik Fibres GmbH, Leogang/Austria (13.-15.09.2011)

Current developments and plants in the filed of hot gas filtration will be presented during the international conference that will take place for the 10th time in September 2011. Continuing the series...

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