In the Upper Palatinate town of Lauterhofen, Hermann Trollius GmbH have been processing limestone and dolomite for three generations. Aside from traditional marketing, the company is now taking unconventional approaches. In order to conserve resources efficiently, Trollius is now for the first time making use of the leftovers of washing crushed dolomite. ...
Dear Readers The use of glass recovered from old glass fragments (“cullet”) not only economises on natural resources, but also, and above all, on energy. In this respect glass is a very valuable raw...
New research shows that magnesium and other metals in mine waste can be dissolved and recovered thanks to acid-producing bacteria. Researcher Nathan van Wyk believes that the method has great...
Uyuni Salt Lake: one of the largest lithium reserves in the world
1 Lake Uyuni
According to the research work of the public-owned company Comibol, the lithium reserves found in Bolivia amount to 100 mill. t lithium and 2000 mill. t potassium. General Motors and...
Recovery of chromite values from ferrochrome industry flue dust
1 Introduction
Waste is a source of secondary raw materials, but at the same time can negatively impact the natural environment and public health. The flue dust generated from the ferrochrome industry...
A new CDE washing plant installed at Seamus Ryan Sand & Gravel in County Tipperary has increased the value of the fi nal products by 50 % since installation. The quarry is located outside Toomyvara...
Principle of X-ray fluorescence (Fig. 1)
If material is exposed to highly energetic, electromagnetic radiation (1), e.g. emitted by an X-ray tube, electrons are removed from the union of atoms of the...
Dear Readers
Bentonite and barite have exceptional properties and so they can be used for many purposes. Both materials can be processed by means of the grinding and separating systems from NEUMAN &...
Mogensen Sizer technology for processing sand
for renders and mortar renders
1 Changes on the building materials market
Besides the basic mineral materials like gravel, quartz, stone, lime, cement, gypsum, clay, anhydrite and trass, chemical additives and non-mineral additives...
Raw materials are a limited resource. And for years a range of different techniques has been developed for recovering raw materials. One example of the careful management of resources is in the...
