Page 21 - Steel Tech India eMagazine Volume January 2024
P. 21

92/     Ć ,668(   Ć -DQXDU\

             +RW 0HWDO 'HVXOSKXUL]DWLRQ  +0'6  E\

             .5 3URFHVV


             Sanat Bhaumik, Director (Sales & Marketing),
             Steel Plantech, INDIA












             ,1752'8&7,21                                       reagent  LQWR  VROXWLRQ   $OVR  WKH  HႇHFWLYHQHVV  RI  KRW
             $V  D  UHVXOW  RI  HYHU  LQFUHDVLQJ  DQG  VWULQJHQW  TXDOLW\   PHWDO GHVXOSKXUL]DWLRQ LV LQYHUVHO\ SURSRUWLRQDO WR WKH
             UHTXLUHPHQWV  E\  WKH  KLJKO\  GHPDQGLQJ  FXVWRPHUV    GHVXOSKXUL]DWLRQ UHDJHQW LQMHFWLRQ UDWH
             GHVXOSKXUL]DWLRQ RI KRW PHWDO LQ VWHHO PDNLQJ SURFHVV   7KHUH DUH PDLQO\ WKUHH GHVXOSKXUL]DWLRQ SURFHVVHV XVHG
             KDV QRZ EHFRPH LQHYLWDEOH  5HPRYDO RI VXOSKXU IURP   LQ WKH VWHHO LQGXVWU\ DQG WKHVH DUH      .DQEDUD 5HDFWRU
             KRW PHWDO LV FDOOHG GHVXOSKXUL]DWLRQ               RU .5 SURFHVV XVLQJ OLPH DV D UHDJHQW      0DJQHVLXP
             6XOSKXU  LV  D  GHVLUDEOH  HOHPHQW  LQ  VWHHO  ZKHQ  JRRG   PRQR LQMHFWLRQ  SURFHVV  RU  8NUDLQD 'HVPDJ  SURFHVV
             PDFKLQDELOLW\  LV  UHTXLUHG  IURP  WKH  VWHHO  SURGXFW    XVLQJ  RQO\  PDJQHVLXP  DV  D  UHDJHQW  DQG       WKH  &R
             +RZHYHU   LW  LV  DQ  XQZDQWHG  HOHPHQW  LQ  PRVW  RI  WKH   LQMHFWLRQ SURFHVV XVLQJ PDJQHVLXP DQG &D&  OLPH DV
             DSSOLFDWLRQV RI VWHHO GXH WR WKH IROORZLQJ UHDVRQV   reagents.                              2
             ‡  6XOSKXU DႇHFWV ERWK LQWHUQDO PHWDOOLF VWUXFWXUH DQG   2XW  RI  WKH  WKUHH  SURFHVVHV   WKH  .5  DQG  &R LQMHFWLRQ
               VXUIDFH TXDOLW\ RI VWHHO
                                                                SURFHVVHV DUH FRPPRQ  +RZHYHU  LQ WKH HQG LW GHSHQGV
             •  Sulphur  provides  brittleness  to  steel  and  when  it   RQ FLUFXPVWDQFHV LQ WKH VWHHO SODQW ZKLFK RI WKHVH WZR
               exists in sulphide phase it acts as a stress raiser in   GHVXOSKXUL]DWLRQ SURFHVVHV LV WKH EHVW RSWLRQ
               steel products.
                                                                ,Q  WKLV  SDSHU  ZH  ZLOO  EULHÀ\  GHVFULEH  WKH  PDMRU
             ‡  6XOSKXU  IRUPV  XQGHVLUDEOH  VXOSKLGHV  ZKLFK   DGYDQWDJHV RI .5 GHVXOSKXUL]DWLRQ SURFHVV
               SURPRWHV  JUDQXODU  ZHDNQHVV  DQG  FUDFNV  LQ  VWHHO
               GXULQJ VROLGL¿FDWLRQ                             .5  .DQEDUD 5HDFWRU  3URFHVV
             ‡  6XOSKXU  KDV  DGYHUVH  HႇHFW  RQ  WKH  PHFKDQLFDO   The KR process was developed in Japan by NKK in
               properties.                                             /RZ  DYDLODELOLW\  RI  PDJQHVLXP  LQ  -DSDQ  PHDQW
             ‡  6XOSKXU  ORZHUV  WKH  PHOWLQJ  SRLQW   LQWHUJUDQXODU   WKDW  DOWHUQDWLYH  SURFHVV  WR  0RQR ,QMHFWLRQ  DQG  &R
               VWUHQJWK DQG FRKHVLRQ RI VWHHO                   injection was needed. The KR process uses relatively
                                                                FKHDS FRDUVH OLPH  6RPHWLPHV &D)   DURXQG     WR
             8QOLNH RWKHU LPSXULWLHV ZKLFK DUH UHPRYHG IURP WKH KRW                            2
             PHWDO E\ R[LGDWLRQ LQ WKH R[\JHQ FRQYHUWHU  WKH PRVW     RI WKH ÀRZ  DQG   RU $O O    FDOFLXP FDUELGH LV DGGHG
                                                                                      2

             HFRQRPLF  PHWKRG  RI  UHPRYLQJ  VXOSKXU  IURP  WKH  KRW   RQ WRS RI WKH KRW PHWDO ODGOH GXULQJ WKH ¿UVW IHZ PLQXWHV
             PHWDO LV E\ UHGXFWLRQ HLWKHU LQ WKH WUDQVIHU ODGOH RU LQ   RI  WKH  SURFHVV   7KH  UHDJHQW  LV  LQMHFWHG  LQWR  WKH  KRW
             WKH FKDUJLQJ ODGOH  EHIRUH LW LV FKDUJHG LQ WKH FRQYHUWHU    PHWDO WKURXJK D URWDWLQJ ODQFH WRJHWKHU ZLWK D FDUULHU
                                                                JDV  QRUPDOO\ QLWURJHQ  RU  DOWHUQDWLYHO\  WKH UHDJHQW LV
             +RW 0HWDO 'HVXOSKXUL]DWLRQ 7HFKQRORJLHV
                                                                DGGHG IURP WKH WRS
             $ QXPEHU RI WHFKQRORJLHV KDYH EHHQ GHYHORSHG RYHU
             WKH  \HDUV  IRU  WKH  GHVXOSKXUL]DWLRQ  RI  KRW  PHWDO  EXW   .5 LQVWDOODWLRQV FDQ EH IRXQG PDLQO\ LQ (DVW $VLD DQG
             DOO  RI  WKHP  KDYH  WKH  EDVLF  UHTXLUHPHQW  RI  D  UHDJHQW   D  IHZ  SODQWV  LQ  (XURSH  DQG  6RXWK $PHULFD   ,Q  ,QGLD
             DQG  D  PHWKRG  RI  PL[LQJ  7KH  GLႇHUHQFH  EHWZHHQ  WKH   RQO\  -6:  KDYH  .5  LQVWDOODWLRQV  IRU  +0'6  LQ  WKHLU
             WHFKQRORJLHV  XVHG  LV  WKH  SURSHUWLHV  RI  WKH  UHDJHQWV    9LMD\QDJDU DQG 'ROYL ZRUNV  5HFHQWO\  WKH +D]LUD SODQW
             WKH  HႇHFWLYHQHVV  RI  WKH  UHDJHQW  WR  UHPRYH  VXOSKXU   RI  $UFHORU0LWWDO  1LSSRQ  6WHHO  ,QGLD  KDV  VHOHFWHG  .5
             DQG WKH HႇHFWLYHQHVV RI WKH PL[LQJ PHWKRG WR JHW WKH   'HVXOSKXUL]DWLRQ DQG WKH SURMHFW LV XQGHU LQVWDOODWLRQ


             STEEL TECH
   16   17   18   19   20   21   22   23   24   25   26