Production of Iron and Steel

Iron and Steel Production In this project, I studied steel production. We will detail the two ways of making, how to make, and other facts about the two metals. In the steelmaking process, iron ore, coke, heated air and limestone or other flux are supplied to the blast furnace. The heated air burns the coke, which supplies heat and carbon for the production of iron. Limestone or other flux can be added and reacted with molten iron to remove acidic impurities known as slag from molten iron.

Iron and steel products (steel) can be recycled by internal and external methods. Several internal recycling methods are obvious. Metal fragments and incomplete products are collected by completely redissolving, re-casting, re-stretching at the steelworks. This method is far cheaper than producing new metals from ores. Most steelmakers manufacture their own coke. By-products from the coke oven contain many organic compounds, hydrogen sulphide and ammonia. The organic compound is purified and sold. Ammonia is sold as an aqueous solution or in combination with sulfuric acid to form ammonium sulfate, which is dried and sold as fertilizer.

Steel is an alloy of iron and a small amount of carbon, but considering the high cost of steel compared to wrought iron, the history of steel and iron making can be used for various products. The main difficulty in producing steel is that the introduction of air or oxygen to oxidize carbon in molten pig iron has been developed and until the melting pig iron can be converted directly to molten steel, its melting point Is higher than the melting point of pig or cast iron.

US demand for steel in China is also faced with problems. Most of the US steel is made from iron and scrap metal - this process requires much less energy than iron ore to produce steel products. Considering the possibility of import tax on imported steel, it is widely expected that the market will remain inverse price.

Along with automobile production and other steel consumption industries, steel production in China is also increasing rapidly. Production of iron ore was synchronized with steel production in the early 1990s, but it was rapidly replaced by imported iron ore and other metals in the early 2000s. It is estimated that the steel production in 2000 was 140 million tons and increased to more than 420 million tons by 2007. Prior to the first five years' plan (1953 - 57), there were one major iron and steel center - Anshan Mountain in the northeast - and a few small centers in China. These products produced 93 million tons of pig iron and 35 million tons of steel in 1952. By 1995, China produced 92.97 billion tons of crude steel and 101.7 billion tons of pig iron. In 2000, it is estimated that China has 1 trillion ton of confirmed coal reserves, 5 trillion tons of coal reserves and 48.7 billion tons of iron ore.