Production of Ferro-Silicon and Calcium Alloys

Vaish, A K (1994) Production of Ferro-Silicon and Calcium Alloys. In: 4th Refresher Course on Ferro Alloys, January 12-14, 1994, Jamedepur.



Initially the process of production of ferro-silicon was developed empirically [1]. Ferro-silicon is made by reducing quartzite with metallurgical coke/gas coke/ Low Temperature Carbonized coke/charcoal. Quartz, quatzite and chelcedony are the cheapest minerals rich in silicon are used for the manufacture of ferro silicon [2]. In India mainly charcoal is used [3]. The techno-economics of the process of ferrosilicon production improves considerably with the increase of the capacity of the furnace [4]. The feasibility of using plasma smelting of low cost taconite tailings to produce ferrosilicon at a high yield has been demonstrated [5]. Large amounts of ferro-silicon are used for the reduction of various oxides in ferro-alloy prod-uction and high percentage ferro-silicon in the form of powder is used as a slag deoxidiser. The scale of opera-tion of ferrosilicon production has increased' steadily, and furnace construction and the auxiliary systems for transport, weighing and control have been modernised but the basic process is essentially unchanged. This paper provides an overview of the raw material requirements, thermochemical consideration, charge calculation, opera-ting conditions, recent developments and, finally, the results of pilot scale trial and industrial plant.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:
Uncontrolled Keywords:Auxiliary systems; slag deoxidiser; operating conditions; plasme smelting
Divisions:Metal Extraction and Forming
ID Code:5785
Deposited By:Sahu A K
Deposited On:12 Jul 2012 09:39
Last Modified:12 Jul 2012 09:39
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