1
Ferro Alloys and Minerals Division of TATA STEEL - 3 min video
Ferro Alloys and Minerals Division of TATA STEEL - 3 min video
DATE: 2011/08/01::
2
Ferro Alloy
Ferro Alloy
DATE: 2011/07/04::
3
Stork Ferro Alloy Plant, Balasore, Odhisha, India
Stork Ferro Alloy Plant, Balasore, Odhisha, India
DATE: 2014/04/14::
4
Ferro Alloy - Nobel by Metalic Corporation India Kolkata
Ferro Alloy - Nobel by Metalic Corporation India Kolkata
DATE: 2011/12/03::
5
Ferro Alloys / Ferro Alloy Powders / Pieces / Ferrous Alloy Powder
Ferro Alloys / Ferro Alloy Powders / Pieces / Ferrous Alloy Powder
DATE: 2013/01/31::
6
LAUNCH OF INDIA
LAUNCH OF INDIA's FIRST FERRO ALLOY BRAND : SILCOMAG FROM TATA STEEL FERRO ALLOYS & MINERALS
DATE: 2012/08/26::
7
Premium Ferro Alloys Ltd,Cochin,Kerala
Premium Ferro Alloys Ltd,Cochin,Kerala
DATE: 2012/06/15::
8
Expedisi Ferro Alloy Part 1
Expedisi Ferro Alloy Part 1
DATE: 2013/07/16::
9
OM Sarawak Ferro Alloy Smelting Plant at Samalaju Industrial Park
OM Sarawak Ferro Alloy Smelting Plant at Samalaju Industrial Park
DATE: 2012/10/17::
10
Expedisi Ferro Alloy Part2
Expedisi Ferro Alloy Part2
DATE: 2013/07/16::
11
Ferro Alloy EISC
Ferro Alloy EISC
DATE: 2013/09/12::
12
Public hearing for expansion of MSP Sponge Iron
Public hearing for expansion of MSP Sponge Iron's ferro alloy plant, Chhattisgarh
DATE: 2012/03/01::
13
SAY IT IN 20 LANGUAGES = ferro-alloy
SAY IT IN 20 LANGUAGES = ferro-alloy
DATE: 2011/06/04::
14
FROM ENGLISH TO SPANISH = ferro alloy
FROM ENGLISH TO SPANISH = ferro alloy
DATE: 2011/11/06::
15
How to say ferro alloy in Italian
How to say ferro alloy in Italian
DATE: 2014/03/08::
16
FROM ENGLISH TO GERMAN = ferro alloy
FROM ENGLISH TO GERMAN = ferro alloy
DATE: 2011/12/13::
17
Ferro Alloys Products by Shree Bajrang Sales (P) Ltd. Nagpur
Ferro Alloys Products by Shree Bajrang Sales (P) Ltd. Nagpur
DATE: 2012/04/27::
18
mobile crusher plant for ferro alloys in india
mobile crusher plant for ferro alloys in india
DATE: 2014/07/30::
19
Metal Powders by Crown Ferro Alloys Pvt. Ltd. Vadodara
Metal Powders by Crown Ferro Alloys Pvt. Ltd. Vadodara
DATE: 2012/06/23::
20
Huge fire accident in Andhra ferro alloys ltd in Vizianagaram (17-03-2015)
Huge fire accident in Andhra ferro alloys ltd in Vizianagaram (17-03-2015)
DATE: 2015/03/17::
21
supply ferro alloys
supply ferro alloys
DATE: 2013/11/14::
22
Ferro Silicon Tapping
Ferro Silicon Tapping
DATE: 2014/12/14::
23
Metal Bulletin Events: "A great place to meet the ferro-alloys industry"
Metal Bulletin Events: "A great place to meet the ferro-alloys industry"
DATE: 2014/03/11::
24
Best valued Ferro Aluminium from Lalwani Ferro Alloys
Best valued Ferro Aluminium from Lalwani Ferro Alloys
DATE: 2014/04/05::
25
Blast at Anjaneya Ferro Alloys in Visakhapatnam | Studio N
Blast at Anjaneya Ferro Alloys in Visakhapatnam | Studio N
DATE: 2014/12/28::
26
ferro alloys and silicon material supplier-Anyang Mingrui Silicon Industry Co,Ltd
ferro alloys and silicon material supplier-Anyang Mingrui Silicon Industry Co,Ltd
DATE: 2013/05/29::
27
Ferro Alloys by Hindustan Produce Company Kolkata
Ferro Alloys by Hindustan Produce Company Kolkata
DATE: 2011/12/15::
28
Industrial Ferro Alloys by Amitreshmi Ispat & Pigments Private Limited, Kolkata
Industrial Ferro Alloys by Amitreshmi Ispat & Pigments Private Limited, Kolkata
DATE: 2012/10/15::
29
Saksh TV - Ferro Alloys Corporation  shock
Saksh TV - Ferro Alloys Corporation shock
DATE: 2012/02/04::
30
Ferro Alloys by Sharp Ferro Alloys Ltd., New Delhi
Ferro Alloys by Sharp Ferro Alloys Ltd., New Delhi
DATE: 2014/07/14::
31
Terrorists Sabotage Ferroalloys Plant in Luhansk Region
Terrorists Sabotage Ferroalloys Plant in Luhansk Region
DATE: 2014/05/19::
32
Ferro Alloys scouting for strategic partners
Ferro Alloys scouting for strategic partners
DATE: 2010/04/07::
33
Ferro Alloys by Amex Resources Mumbai
Ferro Alloys by Amex Resources Mumbai
DATE: 2012/05/11::
34
Container ferroalloys discharge
Container ferroalloys discharge
DATE: 2013/11/10::
35
Ferro Alloys plant
Ferro Alloys plant
DATE: 2011/07/12::
36
Adhunik Metaliks Ferro alloys Tapping
Adhunik Metaliks Ferro alloys Tapping
DATE: 2015/02/07::
37
Power tariff hike may hit AP ferro alloys units - Sakshi TV
Power tariff hike may hit AP ferro alloys units - Sakshi TV
DATE: 2013/04/25::
38
Mod-01 Lec-20 Lecture-20-Extraction of Ferro Alloys
Mod-01 Lec-20 Lecture-20-Extraction of Ferro Alloys
DATE: 2012/07/10::
39
ferro manganese plant flow sheet
ferro manganese plant flow sheet
DATE: 2014/02/14::
40
IFAPA Golden Jubilee Film (Prabhash Gokarn)
IFAPA Golden Jubilee Film (Prabhash Gokarn)
DATE: 2011/09/15::
41
silico manganese plant
silico manganese plant
DATE: 2012/09/18::
42
Business Talk with Mr. Bhartiya
Business Talk with Mr. Bhartiya
DATE: 2013/11/06::
43
Outotec SAF smelting
Outotec SAF smelting
DATE: 2014/12/22::
44
Slag Explosion
Slag Explosion
DATE: 2015/01/28::
45
Elkem Ashtabula - "The Big House"
Elkem Ashtabula - "The Big House"
DATE: 2012/07/01::
46
Welcoming remarks. Sergey Grishchenko, Vice President of "UKRMET"
Welcoming remarks. Sergey Grishchenko, Vice President of "UKRMET"
DATE: 2014/05/28::
47
Manat Tolymbekov, Director of "Chemical-Metallurgical Institute n.a.Zh.Abishev", Kazakhstan
Manat Tolymbekov, Director of "Chemical-Metallurgical Institute n.a.Zh.Abishev", Kazakhstan
DATE: 2014/05/29::
48
Report on preparation for INFACON XIV. Sergey Kudryavtsev, Executive Director of UkrFA
Report on preparation for INFACON XIV. Sergey Kudryavtsev, Executive Director of UkrFA
DATE: 2014/05/29::
49
Стахановский ферросплавный завод остается под контр...
Стахановский ферросплавный завод остается под контр...
DATE: 2014/05/18::
50
'Cüruf' bomba gibi patladı
DATE: 2015/01/28::
NEXT >>
RESULTS [51 .. 101]
From Wikipedia, the free encyclopedia
  (Redirected from Ferroalloys)
Jump to: navigation, search

Ferroalloy refers to various alloys of iron with a high proportion of one or more other elements such as manganese, aluminium, or silicon.[1] They are used in the production of steels and alloys.[2][3] The alloy impart distinctive qualities to steel and cast iron or serve important functions during production and are, therefore, closely associated with the iron and steel industry, the leading consumer of ferroalloys. The leading ferroalloy-producing countries in 2008 were Ukraine, China, South Africa and Russia, which accounted for 77% of the world production. World production of bulk chromium, manganese and silicon ferroalloys was estimated as 29.1 million tonnes (Mt) in 2008, a 3% decrease compared with 2007.[2]

The main ferroalloys are:

Production, by processes[edit]

Evolution of the global ferroalloys production, by processes.

Ferroalloys are produced generally by two methods : in a blast furnace or in an electric arc furnace. Blast furnace production continuously decreased during the 20th century, whereas the electric arc production is still increasing. Today, feromanganese can be still efficiently produced in a blast furnace, but, even in this case, electric arc furnace are spreading. More commonly, ferroalloys are produced by carbothermic reactions, involving reduction of oxides with carbon (as coke) in the presence of iron. Some ferroalloys are produced by the addition of elements into molten iron.

It is also possible to produce somme ferroalloys by direct reduction[fr] processes. For example, the Krupp-Renn process[fr] is used in Japan to produce ferronickel.[4]

Production and consumption, by ferroalloys[edit]

Ferrochromium[edit]

Ferrochromium

The leading world chromite ore-producing countries in 2008 were India (almost 4 Mt), Kazakhstan (more than 3 Mt), and South Africa (almost 10 Mt). More than 94% of chromite ore production was smelted in electric-arc furnaces to produce ferrochromium for the metallurgical industry. The leading world ferrochromium-producing countries in 2008 were China (more than 1 Mt), Kazakhstan (more than 1 Mt), and South Africa (more than 3 Mt). India and Russia each produced in excess of 0.5 Mt of ferrochromium. Most of the 7.84 Mt of ferrochromium produced worldwide was consumed in the manufacture of stainless steel which exceeded 26 Mt in 2008.[2] Production for this is very economical.

Ferromanganese[edit]

Two manganese ferroalloys, ferromanganese and silicomanganese, are key ingredients for steelmaking. China is the leading world producer of manganese ferroalloys (2.7 Mt), with output about much greater than that of the next three major producers—Brazil (0.34 Mt), South Africa (0.61 Mt) and Ukraine (0.38 Mt)—combined.[2]

Ferromolybdenum[edit]

Major producers of ferromolybdenum are Chile (16,918 t), China (40,000 t) and the United States which accounted for about 78% of world production of molybdenite ore in 2008, whereas Canada, Mexico and Peru accounted for the remainder. Molybdenite concentrates are roasted to form molybdic oxide, which can be converted into ferromolybdenum, molybdenum chemicals, or molybdenum metal. Although the United States was the second leading molybdenum-producing country in the world in 2008, it imported more than 70% of its ferromolybdenum requirements in 2008, mostly for the steel industry (83% of ferromolybdenum consumed).[2]

Ferronickel[edit]

In 2008, the major ferronickel-producing countries were Japan (301,000 t), New Caledonia (144,000 t) and Colombia (105,000 t). Together, these three countries accounted for about 51% of world production if China is excluded. Ukraine, Indonesia, Greece, and Macedonia, in descending order of gross weight output, all produced between 68,000 t and 90,000 t of ferronickel, accounting for an additional 31%, excluding China. China was excluded from statistics because its industry produced large tonnages of nickel pig iron in addition to a spectrum of conventional ferronickel grades, for an estimated combined output of 590,000 t gross weight. The nickel content of individual Chinese products varied from about 1.6% to as much as 80%, depending upon customer end use.[2]

In the United States, the steel industry accounted for virtually all the ferronickel consumed in 2008, with more than 98% used in stainless and heat-resistant steels; no ferronickel was produced in the US in 2008.[2]

Ferrosilicon[edit]

Ferrosilicon

Silicon ferroalloy consumption is driven by cast iron and steel production, where silicon alloys are used as deoxidizers. Some silicon metal was also used as an alloying agent with iron. On the basis of silicon content, net production of ferrosilicon and miscellaneous silicon alloys in the US was 148,000 t in 2008. China is the major supplier, which in 2008 produced more ferrosilicon (4.9 Mt) than the rest of the world combined. Other major manufacturers are Norway (0.21 Mt), Russia (0.85 Mt) and US (0.23 Mt).[2]

Ferrotitanium[edit]

Titanium is used in steelmaking for deoxidation, grain-size control, and carbon and nitrogen control and stabilization. During steelmaking, titanium is usually introduced as ferrotitanium because of its relatively low melting temperature and high density. Steels with relatively high titanium content include interstitial-free, stainless and high-strength low-alloy steels. Ferrotitanium is usually produced by induction melting of titanium scrap with iron or steel; however, it also is produced directly from titanium mineral concentrates. The standard grades of ferrotitanium are 30% and 70% titanium. Ferrosilicon-titanium also is produced to allow the simultaneous addition of silicon and titanium. The leading ferrotitanium producing countries include Brazil, China, India, Japan, Russia, Ukraine, United Kingdom and the United States.[2]

Ferrotungsten[edit]

Tungsten is an important alloying element in high-speed and other tool steels, and is used to a lesser extent in some stainless and structural steels. Tungsten is often added to steel melts as ferrotungsten, which can contain up to 80% tungsten. World ferrotungsten production is dominated by China, which in 2008 exported 4,835 t (gross weight) of the alloy. Ferrotungsten is relatively expensive, with the prices around $31–44 per kilogram of contained tungsten.[2]

Ferrovanadium[edit]

Ferrovanadium chunks

In 2008, China, Russia (12,000 t) and South Africa (17,000 t) accounted for 98% of world vanadium mine production. In these three countries, vanadium was primarily recovered from titanium-bearing magnetite ore processed to produce pig iron. The process entails aluminothermic reduction of vanadium(V) oxide, aluminium (as oxide getter), and scrap iron.[1] This produces a slag containing 20% to 24% vanadium pentoxide, which can be further processed to ferrovanadium containing 40% to 50% vanadium. Of the 5,090 t of vanadium consumed in the United States in 2008, 84% came from ferrovanadium and nearly all of it (99%) went into steel manufacturing.[2]

References[edit]

 This article incorporates public domain material from the United States Geological Survey document: "Ferroalloys" (PDF). 

  1. ^ a b Rudolf Fichte (2005), "Ferroalloys", Ullmann's Encyclopedia of Industrial Chemistry, Weinheim: Wiley-VCH, doi:10.1002/14356007.a10_305 
  2. ^ a b c d e f g h i j k Lisa A. Corathers et al. Ferroalloys, USGS 2008 Minerals Yearbook
  3. ^ Moskalyk, R. R.; Alfantazi, A. M. (2003). "Processing of vanadium: a review". Minerals Engineering 16 (9, September 2003): 793–805. doi:10.1016/S0892-6875(03)00213-9. 
  4. ^ Kudo, Akira. Japanese-German Business Relations: Co-operation and Rivalry in the Interwar. pp. 89–108. 
Wikipedia content is licensed under the GFDL License
Powered by YouTube
MASHPEDIA
LEGAL
  • Mashpedia © 2015