Blast Furnace (BF / MBF)
Biggest Blast Furnace BF-3 Goes on Stream at Rashtriya Ispat Nigam Limited (RINL) - Vishakhapatnam Steel Plant (VSP), India
The blowing-in process of newly built third Blast Furnace (BF–3) went through successfully on 24th April'12 with first tapping of Hot Metal from it taking place on the same day. With the addition of the new 3800 cubic meter capacity Blast Furnace No. 3 at RINL (Rashtriya Ispat Nigam Limited) / VSP (Vishakhapatnam Steel Plant) there has been about 4 per cent increase in steel-making of India. This blast furnace was built as a part of the expansion project to take the capacity of the Vishakhapatnam Steel Plant (VSP or RINL) from the present 3 million tonnes to 6.3 million tonnes.The cost of blast furnace... Read More
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TundishFunctions and Importance of Tundish and its Refractory Lining in Continuous Casting
The
tundish is intended to deliver the molten metal to the moulds evenly and at a
designed throughput rate and temperature without causing contamination by
inclusions. It distributes molten steel in continuous casting moulds and is
typically operated at a constant bath depth to ensure a constant feed rate into
the mould required to achieve a constant throughput. Working
lining remains in contact with steel and erosion is initiated at the metal-air
interface with fluctuation of metal level in tundish. Different metallic oxides
present in the metal are the primary eroding agents of tundish refractory lining. Read More
Different types of Tundish Coating and Lining Refractories - A Comparative Assessment on the basis of some Case StudiesThe
primary functions of tundish coating are to protect the high alumina permanent
lining and minimize the contamination of the molten steel required for clean
steel production. Several
factors that need to be considered before making a final choice of tundish
lining for a steel plant have been discussed here with specific references to some Indian Steel Plants. There
are many instances in India and abroad of steel plants switching over from one
tundish lining system to other depending upon the perceived and actual benefits
obtained. So, here an effort has
also been given to put together some such experiences made by others and were
presented in some recently held different seminars and conferences on Refractories. Read moreContinuous Casting Tundish Lining Refractories: Their Merits and Demerits Continuous
casting refractories directly control the molten steel in the last stage of liquid
steel processing and these are therefore, required to have high stability and
special properties. In any continuous casting shop, tundish serves the purpose of reservoir as
well as fulfills certain metallurgical functions like floatation of inclusion,
control of flow to the moulds, thermal and chemical homogenization etc. In
this article we have briefly mentioned about the developments and practices of
tundish lining refractories in their chronological order and also the main
features, merits and demerits of these refractories to enable the individual
steel maker decide what could be the best for his plant. Read more Importance of Tundish Design and Flow Modifier Refractories in Steel MakingOne of the major functions of tundish is to enhance inclusion floatability and thereby, produce clean steel. For the
removal of inclusion through floatation, wall adhesion and agglomeration the
flow patterns inside the tundish play an important role, which in turn is a
function of tundish design.
To streamline the flow and compress turbulence
inside tundish various Flow Control Devices (FCD) are being used in place of
traditional FCDs or tundish furniture like Dams, Weirs, Charge Pads, and Side
Wall Pads etc.Read More
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