Search for dissertations about: "coal mining"
Showing result 6 - 10 of 16 swedish dissertations containing the words coal mining.
-
6. Co-disposal of waste rock and lignite fly ash to mitigate the environmental impact of coal mining
Abstract : Waste rocks (WRs) from coal mining and fly ash (FA) from coal combustion were studied to determine the potential of the WRs to generate AMD, FAs to neutralise it and estimate their impacts on environment. The ultimate goal was to develop a methodology based on co-disposal to mitigate the environmental problems associated to both wastes. READ MORE
-
7. Environmental aspects of coal mine drainage: a regional study of Moatize in Mozambique
Abstract : Mozambique is one of the largest coal producers in Africa. Extraction of the coal is carried out in the Moatize district of the Tete province in the center of the country. A surface mining technique is used to extract the coal below ground level. READ MORE
-
8. Potential of fly ashes for neutralisation of acid mine drainage from coal mine waste rock
Abstract : Many countries around the world use coal as fuel for the purpose of power generation. The extraction of coal produces large volumes of waste rock (WR) that are sometimes sulphide rich (principally containing iron sulphides such as pyrite (FeS2) and pyrrhotite (Fe1-xS)), with varying quantities of trace elements such as As, Si, Cu, Zn, Ni, Co, Mo and Cr etc). READ MORE
-
9. Sustainable Water Quality Monitoring for Developing Countries in the Context of Mining : Monitoring systems and modelling
Abstract : Mining, seen as a source of revenue in most developing countries, threatens seriously the environment. Mining impacts the water quality and one of the main problems of mining is acid mine drainage. Low pH and high concentration of heavy metals characterize acid mine drainage. READ MORE
-
10. Some Basic Problems in Rock Breakage by Blasting and by Indentation
Abstract : This thesis is devoted to discussing some basic problems in rock breakage by blasting and by mechanical excavation, and contains a detailed summary and six appended papers numbered as Papers A to F. The central problem treated in this thesis is the interaction between either explosion products or mechanical tools and rock. READ MORE