Avancerad sökning
Hittade 4 avhandlingar som matchar ovanstående sökkriterier.
1. Biological Treatment of Oily Sludge and Sediments
Sammanfattning : AbstractOily sludge, generated in refineries or in other industrial sectors, and oil-containing sediments, removed from water bodies during remediation works, pose an environmental problem. A common feature between both is their high water content, and variable content of organic and inorganic contaminants, which complicates their treatment. LÄS MER
2. Experimental and theoretical studies on treatment and recycling of pickling sludge generated in stainless steel production
Sammanfattning : The thesis work is one of the on-going research projects within MiMeR (Minerals and Metals Recycling Research Centre) at Division of Process Metallurgy, Luleå University of Technology in Sweden. The major objectives of this thesis work are: i) to characterize raw materials and products obtained from experiments, ii) to study the mechanisms of solid-state reduction and smelting reduction of pickling sludge and iii) to test in laboratory different process alternatives to treat and recycle pickling sludge. LÄS MER
3. Recycling of metallurgical by-products within integrated iron and steelmaking : experimental studies of cold bonded by-product pellets
Sammanfattning : In recent years as costs for depositing dust and sludge generated in the iron and steel making industry have increased, due to lack of space and increasing environmental restrictions, the need to recycle these solid by- products to avoid depositing costs and to recover valuable metal fractions, is soon becoming a necessary reality. Cold bonded agglomeration is considered to be a well-suited alternative for recycling of steel industry by-product dust and sludge. LÄS MER
4. Studies in low temperature self-reduction of by-products from integrated iron and steelmaking
Sammanfattning : Within the last decade, the landfill tax in Sweden has increased over 70% with comparable rates in the UK and elsewhere in EU. This development, among others, highlights the incentive for increased recycling efforts of fine particulate solid by-products in the iron and steel making industry in order to avoid depositing costs and to recover valuable metal fractions. LÄS MER
