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. [1] .

Open-hearth process, steelmaking technique that for most of the 20th century accounted for the major part of all steel made in the world. William Siemens, a German living in England in the 1860s, seeking a means of increasing the temperature in a …

2025年3月25日 · The open-hearth furnace (OHF) uses the heat of combustion of gaseous or liquid fuels to convert a charge of scrap and liquid blast-furnace iron to liquid steel. The high flame temperature required for melting is obtained by preheating the combustion air …

Open hearth furnaces are one of a number of kinds of furnace where excess carbon and other impurities are burnt out of pig iron to produce steel. Since steel is difficult to manufacture due to its high melting point, normal fuels and furnaces were insufficient and the open hearth furnace was developed to overcome this difficulty.

The open-hearth furnace (OHF) is a kind of primary steelmaking method that uses the iron produced in a blast furnace. You might find these chapters and articles relevant to this topic.

2024年3月27日 · The Open hearth furnace (OHF) is a type of furnace that can be used to produce steel using the Siemens-Martin process. It uses pig iron and scrap to produce steel. The open hearth furnace replaced the previous “Bessemer process” for steel production.

2023年6月8日 · Open-hearth steelmaking is a steelmaking process that uses gas or heavy oil as fuel to form a high-temperature flame, and heats raw materials such as pig iron and scrap steel in the furnace of the reverberatory furnace, melts them, and refines them into liquid steel.

An open hearth furnace has a lining of refractory and a low, arched roof that covers the hearth, which is open directly to flames that melt the charge. This process uses about equal amounts of iron and scrap. Steel is produced in an open hearth furnace by the following steps: 1.

2022年4月2日 · In the Open hearth process for producing steel, pig iron, steel scrap, and iron oxide in the form of iron ore or scale are melted in a Siemens - Martin open hearth furnace, so called because the molten metal lies in a comparative shallow pool on the furnace bottom or hearth. The hearth is surrounded by the roof and walls of refractory bricks.

The Open-Hearth Furnace This is a reverberatory furnace to which is connected a regenerative system of heating. A longitudinal section of a furnace, lined for the basic process, is shown in Fig. 26, and the diagram below the furnace is a simplified arrangement to show plainly the connections and passages for air and fuel gas in the regenerative ...