SHRI BAJRANG POWER AND ISPAT LIMITED (TMT DIVISION) · 2016-12-21 · 295 Second Prize Steel...
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295 Second Prize Steel Re-Rolling SHRI BAJRANG POWER AND ISPAT LIMITED (TMT DIVISION) Raipur (Chhattisgarh) Unit Profile SHRI BAJRANG POWER AND ISPAT LTD. (TMT DIVISION) formerly known as SHRI BAJRANG METALLICS & POWER LTD, manufactures Round, TMT Bars up to 40 mm. The Unit is an ISO: 9001-2000 Company and products are ISI approved. In a step to contribute towards the conservation of Environment and Energy as well, the Company has pioneered the methodology of direct charging of HOT BILLETS directly from CCM to Re Rolling Mill and thus stopped the use of reheating furnace and hence saving fuel & protecting Environment. Energy Consumption DESCRIPTION UNIT 2012-13 2013-14 Production - TMT Bars, MS Rounds & Wire Rod Coil MT 174741.39 178266.16 Total Elect. Energy Consumption Lac kWh 249.52 225.70 Specific Elect. Energy Consumption kWh / Ton 142.79 126.61 Total Thermal Energy Consumption M kCal 83643.23 67517.97 Total Thermal Energy Consumption MTOE 8364.32 6751.80 Specific Energy MTOE/Ton 0.048 0.038 Specific Thermal Energy Consumption MkCal/ Ton 0.48 0.38
Transcript of SHRI BAJRANG POWER AND ISPAT LIMITED (TMT DIVISION) · 2016-12-21 · 295 Second Prize Steel...
295
Second Prize
Steel Re-Rolling
SHRI BAJRANG POWER AND ISPAT LIMITED
(TMT DIVISION)
Raipur (Chhattisgarh)
Unit Profile
SHRI BAJRANG POWER AND ISPAT LTD. (TMT DIVISION) formerly known as SHRI
BAJRANG METALLICS & POWER LTD, manufactures Round, TMT Bars up to 40 mm.
The Unit is an ISO: 9001-2000 Company and products are ISI approved.
In a step to contribute towards the conservation of Environment and Energy as well,
the Company has pioneered the methodology of direct charging of HOT BILLETS
directly from CCM to Re Rolling Mill and thus stopped the use of reheating furnace
and hence saving fuel & protecting Environment.
Energy Consumption
DESCRIPTION UNIT 2012-13 2013-14
Production - TMT Bars, MS Rounds & Wire Rod Coil
MT 174741.39 178266.16
Total Elect. Energy Consumption Lac kWh 249.52 225.70
Specific Elect. Energy Consumption kWh / Ton 142.79 126.61
Total Thermal Energy Consumption M kCal 83643.23 67517.97
Total Thermal Energy Consumption MTOE 8364.32 6751.80
Specific Energy MTOE/Ton 0.048 0.038
Specific Thermal Energy Consumption MkCal/ Ton 0.48 0.38
296
Energy Conservation Measures Taken
1. Under the energy efficiency measures, TMT division have invented a State of Art
technology of Direct Rolling of hot continuous cast billet to produce TMT bars
and therefore, completely avoided uses of Furnace Oil in reheating furnace. This
would save about 3.5 million liters of Furnace Oil and reduce around 10,000
tons of CO2 per annum. The Unit has been successful in mastering the
technology and are producing entire production by direct rolling.
2. Cast billet Temperature of around 1080–1100 degree Centigrade achieved.
3. Modification in the caster made i.e. speed of casting, water pressure &
temperature, cooling zone, water circulation system etc. including PLC based
complete automation and control system for operation of CCM.
4. Installation of Hydraulic Shear/ Plasma cutting in place of manual gas cutting
5. Installation of High speed billet conveyor with VFD drives with insulated cover.
6. Installation of VFD for Water pumps in TMT system to reduce power
consumption.
7. Sequence casting in order to increase the yield of cast billet.
297
Energy Policy
298
Certificate of Merit
Steel Re-Rolling
ELECTROTHERM (INDIA) LIMITED
Samakhiyali, Kutch (Gujarat)
Unit Profile
Electrotherm (India) Limited, founded in 1984, started steel division’s operations in
December 2005. The Unit is having a total installed capacity of 0.7 MT.
Ductile Iron Pipe manufactured in Electrotherm Steel Division is the most preferred
DI Pipe being used in all the infrastructural projects for water transportation all over
the India.
Production and Consumption
Particular Unit FY 12-13 FY 13-14
Product MT 54462 66958
Total FO Consumption Liter 448993 22992
Specific FO Consumption Liter/MT 8.24 0.34
Total Coal Consumption Kg 4247080 2258800
Specific Coal Consumption Kg/MT 77.98 33.73
Total Electricity Consumption kWh 6269878 7164935
Specific Electricity Consumption kWh/MT 115 107
Total Thermal Energy Consumption MTOE 2.23 0.97
Specific Thermal Energy Consumption Million kCal/tonne
0.41 0.14
Energy Consumption
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Energy Conservation Measures Taken
Power reduction through hot billet charging
Hot billet charging implies converting the billet in to a rolled product without any
intermediate reheating arrangement. As per this concept, billet coming out of the
caster is directly charged to the rolling mill. The billet that comes out of caster has
surface temperature of about 1100 °C while the core temperature is still higher. The
same hot billet is sent to the rolling mill where it is rolled through roughing stand,
intermediate stand and finishing stand.
In order to achieve direct hot billet charging, unit has properly engineered the caster
and transfer conveyor and synchronised to extract 100 % hot billet charging from
the set up. A little mis-match between them may lead to 80 % hot billet charging.
Remaining billets will have to be cooled down in the atmosphere and rolled using
reheating furnace.
Hot billet charging facilitates saves about 35-40 lit/T of furnace oil or diesel oil.
Thus, total saving of steel maker due to hot billet charging can be of the order of Rs.
1000-1200 /- per ton of steel. In addition to this, environmental pollution due to
reheating furnaces is saved. Total of about 1.2 GJ /T of energy behind reheating of
billet are saved by the new concept of hot billet charging for direct rolling.
300
Energy Policy
