Understanding the Steelmaking Process

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Steelmaking is a process in which raw materials such as iron and ferrous scrap are used to form steel. This process improves the quality of steel, giving it specific characteristics to suit the needs of diverse industries. Due to the availability, strength, and relatively inexpensive production cost, steel has become one of our world’s most valuable resources. The production of steel directly effects our lives nearly every day. Transportation on our railways, erecting buildings, manufacturing appliances and tools, canned food, and computers are just a few applications of steel in modern life. To have a general understanding of the steelmaking process, it is best to understand the most common method of producing steel, the blast furnace. The blast furnace is a chemical process used to create iron from raw materials. Among the vast number of early metallurgical processes used throughout history, the blast furnace is still one of the most economical methods to produce iron. Iron ore, coke, and limestone are charged into the top of the furnace where numerous chemical processes take place. Hot blasts of air enter the bottom of the furnace through nozzles called tuyeres. Dirty gas travels out of the furnace through uptakes and then through a downcomer. Particles settle out in a dustcatcher and a scrubber removes fine particles. Clean gas can now be burned. Once the raw materials have smelted into molten pig iron, a drill breaks through the tap-hole and iron flows out into a trough. Slag is removed with a skimmer and processed for applications in concrete. Molten iron is collected in a ladle and transported for further production. The mud-gun fills the tap-hole with refractory clay and more materials are charged into the ... ... middle of paper ... ...ulnerable to market fluctuations that a prosperous steel plant providing locals with years of work can suddenly collapse. Abandoned plants are eyesores in the community which directly affect the value of land and homes. One of the most widely used materials in today’s global economy is steel. The steelmaking process, dating back to the third-century B.C., has become a much cleaner, more efficient process than any time in history. Still, blast furnaces produce waste material as a part of the production of steel. Toxic pollutants enter the air and water, endangering humans and the environment. Government restrictions on waste and CO2 emissions has led to many advancements in steelmaking. In order to ensure a clean, sustainable future, the steelmaking industry will continue to make advancements to provide one of the most essential materials in today’s economy.

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