The concept of a mini-mill rerolling used rails as a raw material

There are modern conditions for the development of the metallurgical sector of the economy with some new features.The paper provides an overview of the state of modern mini-mills, their extended classification is given.As an example, an approach to formation of new and the development of existing mini-mills for the production of metal using recycled materials is given.The technology of rerolling of used rails into a square billet, reinforced bars and grinding balls is considered.The resulting production line is characterized as highly environmental friendly equipment: electric energy from a hydroelectric power station is used as the main source, secondary scrap remelting technology is not used, production wastes are minimized and secondary metallurgical raw materials are consumed.