What Are Ferroalloys?
Ferroalloys (English Ferroalloys), in the broadest sense, refers to a product that is added to the molten iron as a deoxidizer, elemental additive, etc. during steelmaking to make the steel have certain characteristics or meet certain requirements. An intermediate alloy of iron and one or more elements, mainly used in steel smelting. In the iron and steel industry, all intermediate alloys for steelmaking, whether iron-containing or not (such as silicon-calcium alloys), are generally referred to as "iron alloys". It is customary to also include certain pure metal additives and oxide additives.
- Basic use
- As the steelmaking deoxidizer, the most widely used are silicon manganese, ferromanganese and
- Ferroalloys are mainly produced by electric furnaces,
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- The main pollutants in ferroalloy production are soot, waste residue, and waste water. The most important environmental impact is soot. According to regulations, exhaust gas can be divided into two categories: exhaust gas containing particulate matter and exhaust gas containing gaseous pollutants. The exhaust gas from the ferroalloy plant originates from mineral thermal electric furnaces, refining electric furnaces, roasting rotary kiln, multilayer mechanical roasting furnaces and aluminum metal melting furnaces. The ferroalloy plant has a large amount of exhaust gas and high dust concentration. 90% of the exhaust gas is silicon dioxide, and it also contains chlorine, nitrogen oxides, carbon monoxide, sulfur dioxide and so on. The slag and wastewater are the most seriously polluted by chromium compounds.
- The State Economic and Trade Commission, the State Environmental Protection Administration and other departments are also jointly issuing
- There are many types of ferroalloys, and they are widely used. Ferroalloy is a
- Over the years, China's ferroalloy industry has made rapid progress in terms of product quality, variety and quantity, and its position in the international ferroalloy industry has also increased. China has become the world's largest ferroalloy producing, consuming and exporting country.
- From January to December 2005, China's ferroalloy smelting industry realized a cumulative total industrial output value of 100,853,953,000 yuan, an increase of 26.00% over the same period of 2004; a cumulative product sales income of 95,323,955,000 yuan, an increase of 22.03% over the same period of 2004; a cumulative profit was realized The total amount was 1,017,906 thousand yuan, a 73.01% decrease from the same period in 2004.
- From January to December 2006, China's ferroalloy smelting industry realized a cumulative total industrial output value of 124,284,813,000 yuan, an increase of 25.28% over the same period in 2005; a cumulative product sales income of 119,534,000 thousand yuan, an increase of 26.57% over the same period in 2005; realized cumulative profits The total amount was 1,838,668,000 yuan, an increase of 92.56% over the same period in 2005.
- From January to August 2007, China's ferroalloy smelting industry realized a cumulative total industrial output value of 110,678,981,000 yuan, an increase of 51.96% over the same period of 2006; realized cumulative product sales revenue of 104,695,008 thousand yuan, an increase of 50.14% over the same period of 2006; realized cumulative profits The total amount was 3,821,454,000 yuan, an increase of 1,292.53% over the same period in 2006.
- In 2014, the output of China's ferroalloy industry reached 37.826 million tons, an increase of 0.3% over the same period in 2013.
- With the development of China's ferroalloy industry, some problems have become increasingly apparent. In particular, the level of technology and equipment is low, resource consumption is high, environmental protection and governance are lagging behind, and it is severely constrained by mineral resources. Moreover, factors such as the increase in raw material prices have also severely restricted the further development of the industry and the improvement of quality.
- Therefore, Chinese ferroalloy enterprises must seize the new development situation, increase efforts to integrate ferroalloy industry production enterprises, adhere to the road of scientific development concept, strictly control ferroalloy production enterprises, strengthen industry self-discipline, regulate orderly competition, and strengthen personnel. Training, comprehensive improvement of quality, only in this way can we be invincible in the new situation.
- With the gradual implementation of China's strict control of "two highs and one capital" product export measures, China's export volume of ferroalloys has decreased year by year, and the policy effect has become more obvious. However, due to the impact of the global economic downturn, the domestic and foreign trade situation in China is not performing well, and the operation of Chinese enterprises is more difficult, which may have a series of other negative effects, such as the decline in workers' wages and the decline in social employment [2]
- For small converter workshops with a small amount of use, the dump dump tank is usually transported to the converter span by car or train. It is then unloaded into the workshop's ferroalloy silo by a crane, and when needed, it is unloaded into the ladle via a chute after being weighed.
Medium-sized converters generally use a single bucket elevator to lift the ferroalloy to the top of the ferroalloy silo located in the span of the converter, and then use a belt conveyor to unload the silo for temporary storage. Into the ladle.
Large converter workshop uses a full belt (or bucket lift) feeding system similar to the bulk material system. Its characteristics are reliable, large transportation volume, high degree of mechanization, etc., and it is suitable for large workshops with many varieties and large amounts of ferroalloys.
- Ferroalloys (English Ferroalloys), in the broadest sense, refers to a product that is added to the molten iron as a deoxidizer, elemental additive, etc. during steelmaking to make the steel have certain characteristics or meet certain requirements. An intermediate alloy of iron and one or more elements, mainly used in steel smelting. In the iron and steel industry, all intermediate alloys for steelmaking, whether iron-containing or not (such as silicon-calcium alloys), are generally referred to as "iron alloys". It is customary to also include certain pure metal additives and oxide additives.
- It is customary to also include certain pure metal additives and oxide additives. Ferroalloys are generally used as: deoxidizers: remove oxygen from molten steel during the steelmaking process, and some ferroalloys can also remove other impurities in the steel, such as sulfur and nitrogen. Alloy additives: According to the composition requirements of the steel, alloy elements are added to the steel to improve the performance of the steel. Inoculant: added to the molten iron before cast iron to improve the crystalline structure of the casting [1]
- Quoting the United States Canadian Union definition, ferroalloy production is as follows: 2001-2010 production statistics
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