Management of steel slag a major by-product of the steel industry includes the treatment of highly alkaline leachate pH >115 from rainwater infiltration of slag deposits to prevent adverse impact upon surface or ground waters This study aims to compare different treatment options for steel slag leachate through a life cycle assessment LCA...
This study aims to compare different treatment options for steel slag leachate through a life cycle assessment LCA Five options were compared active treatment by acid dosing A-H2SO4 active treatment by carbon dioxide dosing A-CO2 active treatment by calcium chloride dosing A-CaCl2 passive treatment by cascade and reedbeds with...
This study aims to compare different treatment options for steel slag leachate through a life cycle assessment LCA Five options were compared active treatment by acid dosing A-H2SO4 active...
The slag is alkaline in nature and rich in Ca and Mg oxid Upon use the oxide interact with atmospheric CO 2 and form carbonates making them unstable Storing CO 2 in the slag would make it more stable enhances its life cycle and promotes further usage in various applications CO 2 sequestration can be done through carbonation of steel slag...
A Life Cycle Assessment LCA was performed on three asphalt mixtures containing different aggregates namely ophite slag 1 and slag 2 The inventory gaps were filled by performing several...
A life cycle inventory LCI study has been carried out by the World Steel Association worldsteel to quantify resource use energy and environmental emissions associated with the processing of 16 steel industry products from the extraction of raw mate...
Life cycle assessment to evaluate the environmental performance of new construction material from stainless steel slag Authors first second and last of 4...
Management of steel slag a major by-product of the steel industry includes the treatment of highly alkaline leachate pH >115 from rainwater infiltration of slag deposits to prevent adverse impact upon surface or ground waters This study...
The Slag Cement Association is in the process of updating the Product Category Rules and Environmental Product Declaration for Slag Cement Once this is done an updated Life cycle Assessment Calculator will be created based off this updated information and the...
Table 5 Slag recovery rates and usages 21 Table 6 Life cycle impact assessment results of steel products 33 Table 7 Example impact categories and PED for 1 kg of steel scrap 39 Table 8 Life cycle significant flows phases and processes excluding end-of-life...
Jan 18 2006 0183 32 Buffering of high-pH gt 12 steel slag leachate is documented across a small natural calcareous wetland The alkaline leachate is supersaturated with respect to calcite upstream of the wetland SIcalcite values 23 and becomes less saturated with progress across the wetland to SIcalcite values of 027 at the wetland outlet Reduction in pH across the wetland to around pH 8 at the...
Duplicate Title to Options for managing alkaline steel slag leachate A life cycle assessment User Workarea Dr Helen Baxter - Manage Compare Merge Acknowledge Management of steel slag a major by-product of the steel industry includes the treatment of highly alkaline leachate pH >115 from rainwater infiltration of slag...
The steel industry has developed a methodology to calculate the life cycle inventory LCI for the slags from the steelmaking process It can also be used in LCA studies where the worldsteel approach to dealing with the industry co-products of system expansion is not allowed...
Steel has life cycle advantages over competing materials because of its relatively low energy use high recyclability conservation of natural resources and the extensive re-use of by-products Credible LCAs begin with robust representative life cycle inventory LCI data Since 1995 the World Steel Association worldsteel has been...
Feb 05 2016 0183 32 This value can also be used in the comparison of the carbon cost of different steel making routes or in life cycle assessments for steel and slag applications Introduction When comparing carbon efficiency of hot metal in a blast furnace differences in quality and mix of raw materials complicate quantification of the carbon footprint...
during another life cycle phase such as the use phase LCA based on sound methodology and transparent reporting is an important tool to assist with policy-making s t e e l s c r a p P o s t-c o n s u m e r Raw material extraction Steel recycling Steel production Ma nufact ri g Reuse and remanufacturing Use 1 0 0 R E C Y C L A B L E C 1 0...
Tata Steel IBMD is one of the leading suppliers of GGBS and the product has been used in construction of many iconic structures in India The Ground Granulated Blast Furnace Slag GGBS is obtained by grinding blast furnace slag in water or steam This process leads to a glassy granular product that is then dried and ground into a fine powder...
The results showed that the process of production of cement after floatation was the optimal scenario for copper slag recycling and its life cycle impact and life cycle cost were-6722 Pt and-479...
Jul 01 2011 0183 32 The internal recycling process of BOF slag which is one of the huge solid wastes from iron and steel industry was emphasized Based on the four scenarios of different internal recycling strategies for BOF slag life cycle assessment LCA as a valuable tool for industrial solid waste management was applied to analyze the contribution to reducing environmental impacts and resources burdens for...
The development for such an analysis is based on a Life Cycle Assessment LCA of steel production with a cradle to casting plant gate approach that covers the stages from raw material extraction to solid steel slab production The inventory results have highlighted the large solid waste production especially in terms of slag which could be...
Apr 08 2020 0183 32 Concrete made with recycled steel slag is 17 percent stronger than traditional concrete Above ground phosphorus allows crops to grow and is a critical part of the life cycle Below ground...
6 36 Lakhs by 2030-31 from the current level of 25 Lakhs ie around 1 million additional work-forces through direct indirect opportuniti The increased demand of steel will mainly...
Life Cycle Assessment of Concrete Products for Special Applications Containing EAF Slag December 2017 This use together with the Steel slag is a hard dense material similar to air-cooled...
This work is an attributional and consequential life cycle inventory assessment on the use of copper slag as a replacement for ordinary Portland cement Assessments were done with respect to the emissions of seven kinds of heavy metals and four types of gaseous emissions...
Steel has life cycle advantages over competing materials because of its relatively low energy use high recyclability conservation of natural resources and the extensive reuse of by-products The Steel Recycling Institute a business unit of the American Iron and Steel Institute leads industry research in LCA generating life cycle data for...
Through the XRD and XRF analysis of the converter steel slag we can identify the chemical components and the mineral phase and ensure the extraction method of RO phase from steel slag The possibility of the extraction of silicate phase from steel slag with Salicylic acid ethanol SAE solution was studied firstly Then the effect of dissolution temperature of steel slag dissolution time of...
A life cycle cost computer model ACI Life 365 1 developed in cooperation with the American Concrete Institute s Strategic Development Council can be used to evaluate the beneficial effect slag cement has on structural durability...
Sep 01 2016 0183 32 In particular steel slag represents a significant proportion of these by-products Proctor et al 2000 for instance the production of 3 tonnes of stainless steel is estimated to generate about 1 tonne of stainless steel slag Consequently a large amount of steel slag is yearly produced in the world around fifty million tonnes per year...
LIFE CYCLE THINKING To understand the environmental performance of a product its entire life cycle needs to be taken into consideration A life cycle assessment LCA of a steel product looks at resources energy and emissions from the steel production stage to its end-of-life...
The functional unit was defined as the recycling of 1 ton of copper slag The results showed that the process of production of cement after floatation was the optimal scenario for copper slag recycling and its life cycle impact and life cycle cost were-6722 Pt and-47928 yuan respectively...
