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Co-processing

About: Co-processing is a research topic. Over the lifetime, 464 publications have been published within this topic receiving 9674 citations.


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Journal ArticleDOI
TL;DR: The main findings of this investigation revealed that the three types of waste materials could be reused successfully as partial substitutes for sand or coarse aggregates in concrete mixtures.

578 citations

Journal ArticleDOI
TL;DR: In this article, a state-of-the-art review on the energy use and savings is presented to identify energy wastage so that necessary measures could be implemented to reduce energy consumption in this sub-sector.
Abstract: The cement sub-sector consumes approximately 12–15% of total industrial energy use. Therefore, a state of art review on the energy use and savings is necessary to identify energy wastage so that necessary measures could be implemented to reduce energy consumption in this sub-sector. In this paper energy use at different sections of cement industries, specific energy consumption, types of energy use, details of cement manufacturing processes, various energy savings measures were reviewed and presented. Various energy savings measures were critically analyzed considering amount of energy that can be saved along with the implementation cost. Amount of CO2 reduction has been presented along with the payback period for different energy savings measures as well. This study complied a comprehensive literature on the cement industries in terms of Thesis (MS and PhD), peer reviewed journals papers, conference proceedings, books, reports, websites. It has been observed that China producing major share of global cement production. Coal contribute major share of fuel used in cement industries. However, along with conventional fuels, industries are moving towards the use of alternative fuels to reduce environmental pollution. It was reported that cement industries are moving from wet process to dry process as it consume less energy compared to wet process.

505 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the influence of different load allocation procedures on the environmental impacts of supplementary cementitious materials (SCM) in concrete, including blast furnace slag and fly ash.
Abstract: Waste recycling avoids waste landfilling and all associated releases. It also allows for saving nonrenewable resources. However, the new commercial interest for waste can be seen as a shift in their status from waste to co-product. This has important consequences for environmental load allocation between the different industrial products (and co-products) in industrial plants. In this paper, the specific case of cement has been studied. Actually, to reduce the environmental impact of cement and concrete, industries have been engaged over the last 10 years to increase the replacement of Portland cement by alternative cementitious materials that are principally industrial waste or by-products. In this study, the environmental impacts of two different Supplementary Cementitious Materials (SCM), blast furnace slag and fly ash, are considered using Life Cycle Assessment methodology through a study of the influence of different allocation procedures on environmental impacts of SCM in concrete. Three allocation procedures are tested. In the first one, which is the current practice, no allocations are done. As for the two others, the environmental burdens of the system are respectively associated with the relative mass and some current economic values of the co-products and products. The results are discussed according to the specificity of the cement substitution products (SCM) and the driving forces that are identified for the use of these co-products. Then, a description investigation of another allocation procedure is proposed based on the fact that it is not the relative economic value that permits to evaluate the environmental burdens but the contrary. This last allocation procedure could be generalised for other waste recycling and be used as a regulation tool between the different industrial branches.

379 citations

Journal ArticleDOI
TL;DR: The authors summarizes the current state of practice with regard to the use of waste products as supplementary cementitious materials (SCM) in portland cement concrete (PCC) and provides a summary of the comparatively sparse information on underutilized waste materials such as: sugarcane bagasse ash, rice husk ash, waste wood biomass ash, and waste glass.

331 citations

Journal ArticleDOI
TL;DR: In this article, the authors reviewed various waste materials in different compositions that were added to the raw material at different levels to develop waste-create bricks (WCB) and suggested various physico-mechanical and thermal properties of the bricks incorporating different waste materials.

320 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202318
202231
202119
202017
201920
201818