Scrap in the context of "Waste valorization"

A rag-and-bone man or ragpicker (UK English) or ragman, old-clothesman, junkman, or junk dealer (US English), also called a bone-grubber, bone-picker, chiffonnier, rag-gatherer, rag-picker, bag board, or totter, collects unwanted household items and sells them to merchants. Scraps of cloth and paper could be turned into cardboard, while broken glass could be melted down and reused, and even dead cats and dogs could be skinned to make clothes. Traditionally, this was a task performed on foot, with the scavenged materials (which included rags, bones, and various metals to be scrapped) kept in a small bag slung over the shoulder. Some rag-and-bone men used a cart, sometimes pulled by a horse or pony.

In the 19th century, rag-and-bone men typically lived in extreme poverty, surviving on the proceeds of what they collected each day. Conditions for rag-and-bone men in general improved following the Second World War, but the trade declined during the latter half of the 20th century. In the 21st century, rag-and-bone-style collection continues, partly as the result of the soaring price of scrap metal, particularly in the developing world.

Industrial waste is the waste produced by industrial activity which includes any material that is rendered useless during a manufacturing process such as that of factories, mills, and mining operations. Types of industrial waste include dirt and gravel, masonry and concrete, scrap metal, oil, solvents, chemicals, scrap lumber, even vegetable matter from restaurants. Industrial waste may be solid, semi-solid or liquid in form. It may be hazardous waste (some types of which are toxic) or non-hazardous waste. Industrial waste may pollute the nearby soil or adjacent water bodies, and can contaminate groundwater, lakes, streams, rivers or coastal waters. Industrial waste is often mixed into municipal waste, making accurate assessments difficult. An estimate for the US goes as high as 7.6 billion tons of industrial waste produced annually, as of 2017. Most countries have enacted legislation to deal with the problem of industrial waste, but strictness and compliance regimes vary. Enforcement is always an issue.

An open-hearth furnace or open hearth furnace is any of several kinds of industrial furnace in which excess carbon and other impurities are burnt out of pig iron to produce steel. Because steel is difficult to manufacture owing to its high melting point, normal fuels and furnaces were insufficient for mass production of steel, and the open-hearth type of furnace was one of several technologies developed in the nineteenth century to overcome this difficulty. Compared with the Bessemer process, which it displaced, its main advantages were that it did not embrittle the steel from excessive nitrogen exposure, was easier to control, and permitted the melting and refining of large amounts of scrap iron and steel.

The open-hearth furnace was first developed by German/British engineer Carl Wilhelm Siemens. In 1865, the French engineer Pierre-Émile Martin took out a licence from Siemens and first applied his regenerative furnace for making steel. Their process was known as the Siemens–Martin process or Martin–Siemens process, and the furnace as an "open-hearth" furnace. Most open hearth furnaces were closed by the early 1990s, not least because of their slow operation, being replaced by the basic oxygen furnace or electric arc furnace.

ArcelorMittal S.A. is a Luxembourg-based multinational steel manufacturing corporation, headquartered in Luxembourg City. It is ranked second on the list of steel producers behind Baowu, and had an annual crude steel production of 58 million metric tonnes in 2024.

The company has steel-making operations in 15 countries, including 37 integrated and mini-mill steel-making facilities. In 2024, the company's production was 38% in the Americas, 53% in Europe and 9% in other countries, such as South Africa and Ukraine. The company is vertically-integrated and produces 58% of its iron ore needs, 90% of its coke needs, and 54% of its scrap and direct reduced iron needs.

Conservation and restoration of road vehicles is the process of restoring a vehicle back to its original working condition. Vehicles, whether partially scrapped or completely totaled, are typically restored to maintain their roadworthiness or to preserve those with antique status for use as showpieces.

Bus preservation groups aim to purchase buses of various eras to restore them to their original operating condition. Buses are often restored to the original authentic livery of their original owner.

Steelmaking is the process of producing steel from iron ore and/or scrap. Steel has been made for millennia, and was commercialized on a massive scale in the 1850s and 1860s, using the Bessemer and Siemens-Martin processes.

Currently, two major commercial processes are used. Basic oxygen steelmaking (BOS) uses liquid pig-iron from a blast furnace and scrap steel as the main feed materials. Electric arc furnace (EAF) steelmaking uses scrap steel or direct reduced iron (DRI). Oxygen steelmaking has become more popular over time.

The United States Navy maintains a number of its ships as part of a reserve fleet, often called the "Mothball Fleet". While the details of the maintenance activity have changed several times, the basics are constant: keep the ships afloat and sufficiently working as to be reactivated quickly in an emergency.

In some cases (for instance, at the outset of the Korean War), many ships were successfully reactivated at a considerable savings in time and money. The usual fate of ships in the reserve fleet, though, is to become too old and obsolete to be of any use, at which point they are sold for scrapping or are scuttled in weapons tests.

A steel mill or steelworks is an industrial plant for the manufacture of steel. It may be an integrated steel works carrying out all steps of steelmaking from smelting iron ore to rolled product, but may also be a plant where steel semi-finished casting products are made from molten pig iron or from scrap.