Page 60 - Steel Tech India eMagazine Volume October 2021
P. 60
92/ Ć 12 Ć 2FWREHU
KDUG FRDOV 3&& DQG 0&& FRDOV KDYH YLWULQLWH FRQWHQW
DQG 9LWULQLWH LV WKH UHDFWLYH FRPSRQHQW
RI FRDO DQG 0&& FRDO KDV WKH ORZHVW YLWULQLWH FRQWHQW
9LWULQLWH FRQWHQW VKRZV D VWURQJ FRUUHODWLRQ ZLWK ERWK
KRW DQG FROG VWUHQJWK LQGLFHV > @
,PSRUWHG VRIW DQG 0&& ERWK KDYH VLPLODU 005
+DUG LV WKH PRVW PDWXUH FRDO ,PSRUWHG KDUG
FRDO KDV WKH KLJKHVW 6 FRQWHQW ,QGLJHQRXV
FRDOV KDYH 6 FRQWHQW LQ WKH UDQJH
$PRQJ UHJXODU FRDOV 0&& LV LQIHULRU ZLWK UHVSHFW WR
UKHRORJLFDO DQG YLWULQLWH FRQWHQW 7KXV 0&& ZDV
FRQVLGHUHG DV D FRDO WR EH VXEVWLWXWHG E\ KHDW DOWHUHG Fig. 4: Hot strength of coke from different blends
FRDO LQ D OLPLWHG SURSRUWLRQ
,Q %OHQG % EOHQG FRPSRVLWLRQ ZDV NHSW VLPLODU WR %
Effect on Coke quality: EXW JURXS ZLVH FUXVKLQJ ZDV DGRSWHG LQ SODFH RI EOHQG
FUXVKLQJ %\ DGRSWLQJ JURXS ZLVH FUXVKLQJ RI FRDO LW
,Q WKLV ZRUN FRDO & ZDV VHOHFWHG IRU FRNH PDNLQJ DV
LV SRVVLEOH WR DFKLHYH D UHGXFWLRQ LQ ILQHV PP
LW KDV ORZHVW DVK FRQWHQW DQG KLJKHVW YLWULQLWH
JHQHUDWLRQ ,W DOVR KHOSHG WR FUXVK KDUGHU KHDW DOWHUHG
FRQWHQW DPRQJ RWKHU KHDW DOWHUHG FRDOV ,W
FRDO PRUH HIILFLHQWO\ *URXS ZLVH FUXVKLQJ PD\ KHOS
UHSODFHG 0&& FRDO E\ LQ WKH EOHQG 7KH FRNH
WR FUHDWH D PRUH KRPRJHQHRXV PL[WXUH RI UHDFWLYH
VWUHQJWK SURSHUWLHV DUH VKRZQ LQ 7DEOH
DQG LQHUW DQG LW OHDGV WR DQ LPSURYHPHQW LQ WKH FROG
Table 4: Coke quality corresponding to each blend VWUHQJWK RI FRNH > @
Coke Quality B1 B2 B3 B4 &RNH SURGXFHG IURP %OHQG %
LV LQIHULRU WR % EXW EHWWHU WKDQ
0
% 7KHUH ZDV D VLJQLILFDQW
0
LPSURYHPHQW LQ 0 WKLV ZDV GXH WR JURXS ZLVH
&5, FUXVKLQJ *URXS ZLVH FUXVKLQJ PLQLPL]HV WKH
&65 KHWHURJHQHLW\ RI WKH FRDO EOHQG DQG OHDGV WR EHWWHU FRNH
VWUHQJWK > @
%OHQG LV WKH EDVH EOHQG LW FRQWDLQV +DUG
+DUG ,PSRUWHG VRIW 3&& DQG ,Q % LQ DGGLWLRQ WR JURXS ZLVH FUXVKLQJ VWDPSLQJ
0&& FRDO ,Q EOHQG % RI 0&& UHSODFHG E\ +HDW ZDV DOVR GRQH WR LQFUHDVH EXON GHQVLW\ &RNH TXDOLW\
DOWHUHG FRDO DQG JUDQXORPHWU\ ZDV PDLQWDLQHG ZLWK FRUUHVSRQGV WR %OHQG %
EOHQG FUXVKLQJ 7KH FRNH SURGXFHG IURP %OHQG % LPSURYHG IXUWKHU DQG DSSURDFKHV WKH FRNH TXDOLW\
VKRZHG D VLJQLILFDQW UHGXFWLRQ LQ ERWK WKH FROG DQG KRW RI EDVH EODQG % 'U\ TXHQFKLQJ RI FRNH DORQJ ZLWK
VWUHQJWK RI FRNH )LJXUH DQG 7KLV LV PDLQO\ GXH VWDPSLQJ DQG JURXS ZLVH FUXVKLQJ KDV KHOSHG WR
WR WKH UHSODFHPHQW RI 0&& ZLWK KHDW DOWHUHG FRDO $V SURGXFH FRNH ZLWK VLPLODU &65 DV RI EDVH %OHQG 6WDPS
GLVFXVVHG DERYH WKH TXDOLW\ SDUDPHWHUV RI KHDW DOWHUHG FKDUJLQJ LV WKH ZD\ WR XVH LQIHULRU FRDO LQ FRNH PDNLQJ
FRDO DUH LQIHULRU WR 0&& > @ 7KH GHQVLILFDWLRQ RI FRDO FKDUJH KHOSHG WR SURGXFH
FRNH RI EHWWHU FROG DQG KRW VWUHQJWK > @
7KXV FRPELQDWLRQV RI SUH DQG SRVW FDUERQL]DWLRQ
WHFKQLTXHV KDYH KHOSHG WR SURGXFH FRNH RI VLPLODU KRW
VWUHQJWK +RZHYHU FROG VWUHQJWKV DUH VWLOO LQIHULRU WR WKH
EDVH EOHQG
CONCLUSION
8WLOL]DWLRQ RI KHDW DOWHUHG FRDO LQ FRNH PDNLQJ LV YHU\
FKDOOHQJLQJ EHFDXVH RI LWV SRRU FRNLQJ SURSHUWLHV ,Q
WKH SUHVHQW ZRUN LWV XWLOL]DWLRQ ZDV VWXGLHG LQ D
NJ RYHQ 3UH DQG SRVW FDUERQLVDWLRQ WHFKQLTXHV ZHUH
DGRSWHG WR PLQLPL]H VLGH HIIHFW RI KHDW DOWHUHG FRDO RQ
Fig. 3: Cold strength of coke from different blends WKH FRNH TXDOLW\ ,W ZDV REVHUYHG WKDW WKH KRW VWUHQJWK
STEEL TECH