Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Bhilai Sms 1.

8,248 views

Published on

Published in: Business, Technology

Bhilai Sms 1.

  1. 2. Operation Practices of SMS-1,Converter Shop Steel Melting Shop-1 BHILAI STEEL PLANT
  2. 3. ANNUAL PRODUCTION PLAN/ACTUAL PRODUCTION YEAR SMS-1 APP SMS-1 ACTUAL SMS-2 APP SMS-2 ACTUAL 2006-2007 2.37 2.41 2007-2008 2.43 2.51 2008-2009(HALF YEARLY) 1.91 1.95
  3. 4. BHILAI STEEL PLANT
  4. 5. Main Facilities of S M S-1 <ul><li>4 Nos. Twin Hearth Furnaces </li></ul><ul><li>Bulk charge yard </li></ul><ul><li>Ferro Alloy yard </li></ul><ul><li>Mould yard </li></ul><ul><li>Slag yard </li></ul><ul><li>Stripper yard </li></ul><ul><li>Magnetic yard </li></ul><ul><li>2 Nos. Mixers(1300 ton each) </li></ul>
  5. 6. FURNACES <ul><li>Shop has 4 Twin Hearth Furnaces of which 3 Furnaces are operational at any moment and 1 Furnaces may be under hot reserve or refractory lining. </li></ul><ul><li>The capacity of the Furnaces is 250 t x2. </li></ul><ul><li>Furnaces are of negative draft type. </li></ul><ul><li>Average lining life of Furnaces is around 500 heats. </li></ul>
  6. 7. <ul><li>Hot metal received from blast furnace is converted to steel by removing carbon and other elements present. A typical analysis of hot metal received from blast furnace is:-- </li></ul><ul><li>c- 3.5-4.0% </li></ul><ul><li>si- 0.6-1.0% </li></ul><ul><li>Mn- 0.6-1.0% </li></ul><ul><li>S 0.05% max </li></ul><ul><li>P 0.10% max </li></ul>
  7. 8. <ul><li>First of all 50 tons scrap is added in the bottom of Furnace </li></ul><ul><li>10 tons limestone is added. </li></ul><ul><li>200 tons of hot-metal is charged from charging side through chute. </li></ul><ul><li>Then O 2 is blown through lance. </li></ul>
  8. 9. <ul><li>Blow is finished after 1hr-45 min of blowing, with 1650ºC and bath carbon below 0.10 </li></ul><ul><li>After taking sample and temperature, re-blowing is done for chemistry and temperature. </li></ul><ul><li>Metal is tapped in the preheated ladle provided by pit side. </li></ul><ul><li>Ferro Alloys are added as per requirement with the help of crane </li></ul>
  9. 10. <ul><li>Final sample and temperature is taken. </li></ul><ul><li>Then ready metal is tapped in the pre-heated ladle provided by pit side. </li></ul><ul><li>Steel is sent to pit side for teeming into moulds. </li></ul>
  10. 11. <ul><li>Basicity 2.5-3.0 </li></ul><ul><li>MgO >8.0 </li></ul><ul><li>FeO <20 </li></ul>
  11. 12. Grade   CONFIGURATION             ADDITION         C' Mn' P' S' Si' FeMn SiMn Si Coke Al Nb TEMP       S+P≥0.065                   GROUP'B' GR-1 0.05--0.10 0.30--0.50 0.04 0.035 0.050--0.080 150 1200 APR 0 0 0 1650±10 GROUP'B' GR-2 0.06--0.12 0.30--0.60 0.04 0.035 0.050--0.080 150 1200 APR 0 0 0 1650±10 CR HEAT <0.10 0.45 MAX 0.04 0.035 0.050--0.080 150 1100   0 0 0 1650±10 2062 C+Mn/4≥32 0.12-0.20 0.82--1.40 0.045 0.045 0.015--0.040 1800±100 550 APR 0 0 0 1660±10 SLAG POT HEAT 0.25--0.30 1.0--1.2 0.04 0.04 0.30--0.35 0 2700--2800 250KG 350KG 150KG=8NOS 0 1700±10 SAIL RIM III 0.06MAX 0.30--0.40 0.04 0.045 0.060MAX 0 1280 APR 0 0 0 1650±10 SAILMA 350 0.15--0.18 0.110--0.121 0.04 0.04 0.015--0.025 2300 300   0 0 60KG 1650±10 GR III SK <1.60 0.82--1.40 0.04 0.04 0.030--0.050 1600±50 550 APR 0 0 0 1650±10
  12. 13. <ul><li>The pit side work can be divided in 2 main parts--- </li></ul><ul><li>a.-Teeming b.-ladle preparation </li></ul><ul><li>TEEMING </li></ul><ul><li>After tapping the ladle is transferred to the teeming bay by means of crane </li></ul>
  13. 14. <ul><li>The teeming ladle is equipped with slide gate mechanism which facilitates the opening and closing of the ladle nozzles for teeming. </li></ul><ul><li>The ingot mould filling time is normally 50-60 seconds. </li></ul><ul><ul><li>Capacity of Moulds 8 t . </li></ul></ul>
  14. 15. SAFETY MEASURES SAFETY OF MAN AND MACHINES IS GIVEN UTMOST PRIORITY IN ANY STEEL PLANT.FOLLOWING MEASURES SAFETY MEASURES ARE TAKEN PERIODICALLY. <ul><li>Safety meetings on weekly basis. </li></ul><ul><li>Safety discussion on daily basis. </li></ul><ul><li>Calibration of all interlocks weekly. </li></ul><ul><li>Calibration of lance daily once. </li></ul>
  15. 16. CONCLUSION <ul><li>In order to sustain & grow in steel market we have to reduce: </li></ul><ul><ul><li>The production cost. </li></ul></ul><ul><ul><li>Operating expenses. </li></ul></ul><ul><ul><li>Go for Modernization. </li></ul></ul>
  16. 17. THANK YOU

×