Reprocessing of valuable residues

Dear readers,

In Germany, the extraction of hard coal has become history after the closure of the last mine – Prosper-Haniel mine in Bottrop on 21 December 2018. However, in other countries of the world, such as India, hard coal is still considered an important source of energy – even though the storage of residues in tailing piles or slurry ponds associated with coal extraction entails enormous environmental, social and also governance risks. Dr. mont. Dilip Kumar and Deepak Kumar report on the possibilities of an economically viable utilisation of valuable residues with the help of flotation processes, gravity separation and modern dewatering techniques in their technical article „Coal tailings reprocessing and fines recovery“ starting on p. 46.

Until 31 December 2021, you still have the opportunity to register with a presentation for the next Symposium on Processing Technology of the Institute for Processing Machinery and Recycling Systems Technology at Freiberg University of Mining and Technology. Please find more information in the issue on p. 10.

You can find more interesting topics – among others about a sustainable use of raw materials – in the Focus Industry section starting on p. 12.

Wishing you enjoyable reading

Ulrike Mehl, editor of AT MINERAL PROCESSING


Related articles:

Issue 2016-06

TurboBelt TT Drive on the H2 belt conveyor in the Prosper-Haniel coal mine

Voith has installed a TT Drive on the H2 belt conveyor in the Prosper-Haniel coal mine without interrupting operation and achieved a comprehensive solution with the subsequent installation of another...

Issue 2009-03

Change of conveyor belt at the Prosper-Haniel mine

At the end of 2008, after eight years in darkness, a huge monster was wriggling back to the surface bit by bit: the conveyor belt from the inclined shaft of the Prosper-Haniel mine. There the giant of...


RAG Mining Solutions plays host to delegation from Chile

In late October RAG Mining Solutions and representatives from RAG Aktiengesellschaft welcomed an economic delegation from Chile consisting of nearly 30 leading figures from Chilean mining companies,...

Issue 2014-06


Dear Readers What will be the source of energy of the future? Fossil fuels are limited, nuclear fuels are not safe and the disposal of residues has not been solved … and it is doubtful if our...

Issue 2013-12

Good News

Dear Readers The year ends with a piece of good news. In the past decades, the extraction of mineral raw materials in Germany was mainly related to the coal, potash, salt as well as the rock and...