The steel industry plays a vital role in global economic development, but it is also responsible for significant environmental impacts, including greenhouse gas emissions, resource depletion, and waste generation. As the world strives for sustainability, the concept of green steelmaking has emerged as a pathway to mitigate these challenges and promote a more environmentally friendly steel production process. Green steelmaking encompasses a range of practices and technologies aimed at reducing the industry's carbon footprint and minimizing its environmental impact. One key aspect of green steelmaking is the integration of renewable energy sources into the production process. By shifting away from fossil fuels and adopting clean energy alternatives such as wind, solar, or hydropower, steelmakers can significantly reduce their carbon emissions and dependence on finite resources. Another crucial element of green steelmaking is the recycling and reuse of materials. Steel is highly recyclable, and by utilizing scrap steel as a primary feedstock, the industry can reduce the need for virgin raw materials, conserve resources, and decrease energy consumption. Additionally, byproducts and waste materials from the steelmaking process, such as slag and sludge, can be repurposed for various applications, contributing to waste reduction and resource efficiency. Furthermore, green steelmaking involves the implementation of advanced technologies and process optimization. Innovative technologies like electric arc furnaces, which use electricity instead of fossil fuels for steel melting, offer higher energy efficiency and lower carbon emissions compared to traditional blast furnaces. Hydrogen-based reduction processes, which utilize hydrogen as a reducing agent instead of carbon, show promise in achieving carbon-free steel production. To support the transition to green steelmaking, collaboration, and policy support are essential. Governments and regulatory bodies can play a crucial role in incentivizing and promoting sustainable practices through supportive policies, financial incentives, and the establishment of regulatory frameworks. Collaboration between industry stakeholders, research institutions, and technology providers is also vital for knowledge sharing, research and development, and the scaling up of sustainable steelmaking solutions. In conclusion, green steelmaking represents a transformative approach to steel production, aligning with the global objectives of sustainability and environmental stewardship. By integrating renewable energy, promoting recycling, adopting innovative technologies, and fostering collaboration, the steel industry can reduce its environmental impact, contribute to climate change mitigation, and pave the way for a greener and more sustainable future.

We are glad to present The VALLWAY Research Award 2022 to the following people in different categories. Please click here to see the list of...

This study discusses the viability of substituting marble debris for cement in order to save money and the environment. The usage of marble dust particles as a fine aggregate replacement in concrete is studied in this study. In concrete, marble has taken the position of fine aggregate at content levels of 0, 4, 8, 12, and 16. To examine the varied features of Marble dust concrete, five distinct series of concrete mixtures were created. Workability, compressive strength, water absorption, specific gravity, and other parameters of controlled concrete have been compared.

Because of the research that has been done over the past three decades, continuous casting is now a complex and cutting-edge technique. This study has referenced the critical numerical modeling approach of the continuous casting process. The current work explains how molten steel flows, transfers heat, solidifies, forms the shell through solidification and coupling, and more. The continuous casting process is currently a trusted industrial method for the manufacture of steel. Numerous complex processes involving fluid flow, heat transport, and structural deformation are a part of the continuous casting process. Since metallurgical techniques have recently advanced, the continuous casting process has taken over as the primary way to make steel. Steel producers are always looking for innovative, more productive manufacturing techniques in order to achieve efficient and effective output.

In this research work, our emphasis is laid on the employment of rubber tire aggregates( 5% min & 15% max) by partially replacing the coarser rock aggregates in plain cement concrete in the case of rigid pavements. To get the maximum possible outcome it is very much advised to treat the rubber tire aggregate surface with NaOH and cement paste, before using them with M20 concrete mix. Using untreated rubber it was noticed that the overall compressive strength of the concrete mix had a rapid dip but when treated rubber was employed the overall 28-day compressive strength of the mix showed more than a 90% increase, which is quite satisfactory, considering the availability of used tire rubber at ease and cheap rates furthermore its employment reducing the amount of hazardous threat it can pose to the environment. Such an amount of compressive strength is accepted as quite satisfactory for treated rubberized tires, e.g. in the case of floor construction and concrete pavements where the compressive strength is not of so much importance. It was found that the flexural and split tensile strength is higher than the normal concrete but only when the rubber was treated with NaOH and cement paste. However, the workability had a certain dip, flexibility shows awesome increment, and the resultant mix is lighter than the concrete mix because of the light weight of rubber particles. Such enhancement in the properties like compressive strength, split and flexural strength, lightweight, high impact, toughness resistance, etc. can be helpful in the employment of this concrete in various civil engineering works.