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еƷλXV(qing)ʯҟY(ji)C(j)ܳԇ(yn)о

еƷλXV(qing)ʯҟY(ji)C(j)ܳԇ(yn)о

! 14 !                p               200912

еƷλXV(qing)ʯҟY(ji)C(j)ܳԇ(yn)о

־Ӣ,,Ф|,l(wi)

(1.FݴW(xu)cұW(xu)Ժ,FF(yng)550003;

.FݎW(xu)čW(xu)Ժ,FF(yng)550014)

ժҪ:ᘌ(du)҇(gu)YԴc(din),ͬڂy(tng)ʯҟY(ji)ď(qing)ʯҟY(ji)C(j),XȞ3.84ĵVʯ,}XȞ1.2~1.6M(jn)V,Xһ}}XSL(zhng)ʯĿ,ڟY(ji)ض1290  ͟Y(ji)r(sh)g90minlM(jn)ϟɡ(sh)(yn)Y(ji),(qing)ʯҟY(ji)Y(ji)ϵܳ^,Y(ji)Xܳ_(d)82  8%,ҪXһ}}XSL(zhng)ʯ,еҪ}XSL(zhng)ʯP(gun)I~:ʯҟY(ji);(qing)ʯҟY(ji);Y(ji);ܳ

ЈD̖(ho):TF803.21 īI(xin)(bio)R(sh)a:A ¾̖(ho):1002-1752(2009)12-14-4

gradebauxiteanditsdigestionperformances

ying1,ZHANGNian-bing2,XIAOWei1andLIUWei2

(1.TheMaterialsandMetallurgyCollege,GuizhouUniversity,Guiyang550003,China;2.SchoolofMaterialandArchitecturalEngineering,GuizhouNormal,Guiyang550001,China;)

:BasedontheChinesebauxitecharacter,themechanismofintensifiedlimesinteringprocesswasstudieddifferentfromtraditionalsinteringprocess.Inthecharge,themassratioofaluminatosilicais3.84,calciumaluminaratio1.2~1.6(inordertoformation2CaO!Al2O3!SiO2andCaO!Al2O3),andthenthechargeissinteredat1290or90min.Itisconvenientforsintertobeleached,andthedigestionrateis82.8%.ThegrogandredmudwerecharacterizedbypowderX-raydiffraction.Theresultsshowedthat2CaO!Al2O3!SiO2andCaO!Al2O3werethemainphaseforgrog,2CaO!Al2O3!SiO2wasthemainphaseforredmud.

:limesinteringprocess;intensifiedlimesinteringprocess;sintering;digestion

҇(gu)XVc(din)ǸX߹衢FXȡXȴ7܉üݶa(chn)XVHռ10%,60%ϵXVX4~6֮g

Al2O3 64%(A/S7),ϵXѽ(jng)_(d)40%(A/S4.5)ˮƽ,ҏš䷽ϵõ˃(yu),Һָ(bio)Ҳ(yu),ҺXԭ(li)95g/lߵ120g/lX,ܳ༚(x)(yn),ܘO,Һ

̷x](mi)Ќ󵽺mķ(du)ڼY(ji),^ƷλĵVʯ(ĥVA/S6~8)ԭϽMa(chn),(hu)X,ۺϱ,Ķp,ܺ,Ӯa(chn),ͳɱ,(li)a(chn)ЧشЧ,ֵоn} 4#

ʯҟY(ji)һNXV}ğY(ji),cAʯҟY(ji)^,ԭρ(li)ԴV,ϲA,̼ĸҺM(jn)Y(ji),ֻڝAѭh(hun),Բܺĸ͵ĸɷY(ji),ͬr(sh)Ҳǃ(yu)|(zh)a(chn)QXˮԭ 5#Y(ji)΢õһ;

6#

ʌһN^̎еƷλXV

شđ(yng)Ãr(ji)ֵA-ʯҟY(ji)(yng)ڹI(y)a(chn)Xԁ(li),ѳɞ܉̎߹XV߹躬XԭϵЧY(ji)̏(f)sܺĸa(chn)ɱߵȱc(din) 2,

3#

˽͟Y(ji)a(chn)ɱ,XScϴW(xu)1999M(jn)ˏ(qing)Y(ji)I(y)ԇ(yn)ԓˇЃɂ(g)ͻc(din):һXõ@,ɂy(tng)Y(ji)32%~35%(A/S3.2~3.4)ߵ45%(A/S>7);ܳܳҺXɂy(tng)120g/lߵ150g/lϡXSՏ(qing)Y(ji)g(sh),F(xin)̎ԭVѽ(jng)ߵ˺

(xing)Ŀ:FʡȻƌW(xu)(xing)Ŀ(̖(ho):ǭƺJ 2008#2007);FʡdȻƌW(xu)(ǭ̿2006309)

:

200912

־Ӣ,,Ф|,l(wi):е

! 15  ! ƷλXV(qing)ʯҟY(ji)C(j)ܳԇ(yn)о

AL2O3 CaO=CaO!Al2O3

2CaO Al2O3 SiO2=2CaO!Al2O3!SiO2CaO TiO2=CaO!TiO2CaO Fe2O3=CaO!Fe2O3

ܳ^(gu)AεҪ(yng):

CaO!Al2O3 NaCO3 aq CaCO3& 2NaAl(OH)4 aq

ϿԿ,(qing)ʯҟY(ji)ʹXVеXXһ}ʽ,XVеĹ}XSL(zhng)ʯʽڡ(j)īI(xin)(bo),}XSL(zhng)ʯډAҺ,@ӽ^󲿷ֹ(hu)M(jn),ֻĹ(hu)M(jn)Һ,@(hu)O󽵵Ó蹤ؓ(f)(dn)@NʽV(hu)OĽʯҼ,OX,Ķp,ܺ,Ӯa(chn),ͳɱ,(li)a(chn)ЧЧ

ʯҟY(ji)̎еƷλXV(؄eǸ߹XV),һNֵ^m(x)оXa(chn)

ᘌ(du)ʯҟY(ji),(qing)ʯҟY(ji)·,M(jn)еƷλXV(qing)ʯҟY(ji)Y(ji)C(j)о,M(jn)ܳԇ(yn)о

Y(ji)ԭ

.1 AʯҟY(ji)C(j)

AʯҟY(ji)ڟY(ji)AεҪW(xu)(yng) 2#:

AL2O3 Na2CO3 Na2O!Al2O3 CO2?2O3 Na2CO3 Na2O!Fe2O3 CO2%SiO2 2CaCO3 2CaO!SiO2 2CO2%TiO2 CaCO3 CaO!TiO2 CO2%ܳ^(gu)AεҪ(yng):

Na2O!Al2O3 4H2O 2NaAl(OH)4

Na2O!Fe2O3 2H2O Fe2O3!H2O& 2NaOH1.2 Ҏ(gu)ʯҟY(ji)Y(ji)ԭ

Ҏ(gu)ʯҟY(ji)ڟY(ji)AεҪ(yng) 2#:

2CaO=2CaO!SiO2

3Al2O3!2SiO2# 64CaO=3 12CaO!7Al2O3#

14 2CaO!SiO2#

(dng)Y(ji)ꮅ,m(dng)?sh)Ľƶ?  -C2S(hu)  -C2SD(zhun)(D(zhun)ض725  ),ϿԳF(xin)ԷۻԷۻs30minп_(d)70%,ƽȞ20 m 2#ԷۻҪ(yng):

-C2S    -C2S

ܳ^(gu)AεҪ(yng):

CaO!7Al2O3 12Na2CO3 aq 12CaCO3& 14NaAl(OH)4 10NaOH aq

!Al2O3 Na2CO3 aq CaCO3& 2NaAl(OH)4 aq

CaO!Al2O3!6H2O 3Na2CO3 aq

NaAl(OH)4 3CaCO3 4NaOH aq

ܳҺM(jn)ЌTÓ貽E,õXcҺM(jn)ֹ̼,M(jn)õAl(OH)3,ٽ(jng)^(gu)џͿɵõI(y)(j)Xa(chn)Ʒ1.3 (qing)ʯҟY(ji)Y(ji)ԭ

ď(qing)ʯҟY(ji)ͬڂy(tng)ʯҟY(ji),ԭ:

2(sh)(yn)

2.1 ԭϼx

XVȡFXS,Ҫɷ1С

1 XVҪW(xu)ɷ(|(zh)?jn)?sh)%)

Al2O364.24

Sio216.75

Fe2032.32

Cao2.77

Na2oO0.65

Tio21.82

a/S3.84

}̼c(sh)(yn)Ҫx:Rt(SX-08-16),Ԅ(dng)؜ˮԡb,÷x2.2 ԇ(yn)E

ϵǸ(j)}XC/A(ʯĦ(sh)/XĦ(sh))M(jn),Ӌ(j)㹫ʽ:

O(sh)XVжĦ(sh)NSi,VXĦ(sh)NAl,CaO!Al2O3XĦ(sh)NAl1,2CaO!Al2O3!SiO2XĦ(sh)NAl2,}Ħ(sh)NCaٸ(j)ԭϳɷֺ͟Y(ji)(CaO!Al2O32CaO!Al2O3!SiO2)“(lin):

nsi=16.75/62=0.27mol;NAl=NAl1 NAl2=64.25/102=0.6299mol,NSi=NAl2;NCa=NAl1 2NAl2=0.9mol

ᘌ(du)ԇ(yn)XV,ՓC/A=1.43(j)

! 16 ! p    200912ډ20mm 40mmĈ@w,bճ,Rt(SX-08-16),O(sh)ĜضŸY(ji)һr(sh)g,ȡY(ji)ĘƷsҜ,ĥ(x),ܷQȡһԄ(dng)؜ˮԡb̼cˮҺ(ܳl:NaCO3120g/l,ܳض80  ,ܳr(sh)g30min,120r/min,120mlҺܳ8gƷ)M(jn)ܳԇ(yn),ཛ(jng)ɷϴ,M(jn)Xy(c)(X-侀x:ձW(xu)D/Max-2200,:3kW;y(c)Ƿ:3(~70(,CuK!;`:3%~5%;y(c)Ǿ:)0.002()ʧ,ͬӲ(sh)(yn)}XcՓӋ(j)}X1.43

(qing)ʯҟY(ji)Y(ji)X_(d)47.33%~55.83%,еX?j)H8  71%~14.6%ԓˇͻ˂y(tng)š䷽ԭt,һ̎ԭVX64.24%;;Xɂy(tng)Y(ji)32%~35%(A/S3.2~3.4)ߵ47.33%~55.83%(A/S=3.84,),һܳյXõߡ

.2 Ϻͳ

Y(ji)cӑՓ

.1 ϵܳ

ڟY(ji)a(chn)X^(gu),cɵĺÉֱӰ(g)a(chn)ˇĽ(jng)(j)ָ(bio)(qing)ʯҟY(ji)}Ȍ(du)ܳӰD1

ʾ

D2 ԇ(yn)(SL)ͳ(CN)XRDDV

(jng)Ӌ(j)C(j)z˹óY(ji)ϺܳY(ji),ĈD2Y(ji),}XȞ1.4r(sh),еҪXһ}

D1 }X(C/A)(du)ܳ( A)Ӱ

(CaAl2O4CaO!Al2O3)}XSL(zhng)ʯ(Ca2Al2SiO72CaO!Al2O3!SiO2);}XȞ1.4r(sh),еҪ}XSL(zhng)ʯ(Ca2Al2SiO72CaO!Al2O3!SiO2),߀ژOδܳXһ}ϺͳXRDDČ(du)ȽY(ji)Կ,еCaO!Al2O3̼cˮҺܳЧ,ڳֻкĚ,2CaO!Al2O3!SiO2̼cˮҺܳĽY(ji)(li),׺ډAҺ,@īI(xin) 7#еĽY(ji)ՓһϵķԵó,XVеĶ趼}XSL(zhng)ʯ,@Nȥܳ,ܳҺĹָ(sh)(hu)^,@o(w)ɕ(hu)Óؓ(f)(dn)ڛ](mi)ԭ}a(chn),Ķԭ}Ķη(yng)2CaO!Al2O3!SiO2yڷۻ|(zh) 7#,@ҲڽQϸߺX,ܳ

(sh)(yn)Y(ji),(dng)}XȞ1.4,Y(ji)ضȞ1290  ,Y(ji)r(sh)g90minr(sh),Y(ji)Xܳ,_(d)82.8%ĈD1֪,Xܳ}XC/A1.4̎F(xin)ֵ,(dng)}Xȴ1.4С1.4r(sh),XܳʾʬF(xin)½څ(sh)ԭ:(dng)}XС1.4r(sh),}ʹȫ2CaO!Al2O3!SiO2ʽ,(hu)һx,@Щxܳ^(gu)аl(f)η(yng),ʹܳXcʽڶM(jn),@͌(do)ܳʽ;(dng)}Xȴ1.4r(sh),}^(gu),Е(hu)F(xin)xCaO,ܳr(sh)cXcҺ(yng)ˮ

(O!3

12

־Ӣ,,Ф|,l(wi):е

! 17  ! ƷλXV(qing)ʯҟY(ji)C(j)ܳԇ(yn)о

CaO!Al2O3ڵX׵ȫܳ,׺XĶF(xin)ԓ(qing)ʯҟY(ji)߀дM(jn)һо

īI(xin):

1#_,,,βȪ.ՓЇ(gu)߹F   ˮӲX

XVĎ׷N̎ J#.p.1996(2):14-17.

2#.Xa(chn)ˇW(xu) M#.,ұ𹤘I(y).1993.

.

3#L(zhng),丣\(yn),.XA/S¹ˇ

о J#.p.2000(12):21-24.

4#С,,A,־,I(y).(qing)Y(ji)a(chn)

X¹ˇоc(sh)` J#.Ї(gu)ɫٌW(xu)(bo).2004,14(06):1031-1036.

5#A,,A.qXˮğɗl J#.

}W(xu)(bo).2004,32(10):1289-1292.

6#Ŷ.΢О鼰о D#.AпƼW(xu)

TʿW(xu)λՓ.2006.3.

7#θ.ʯʯY(ji)a(chn)XĿָ(bio)̽ӑ J#.p.

(2):21-24.

༚(x)(yn),ܲy}

Y(ji)Փ

)ď(qing)ʯҟY(ji)ͬڂy(tng)ʯҟY(ji),(qing)ʯҟY(ji)ʹXVеXXһ}ʽ,XVеĹ}XSL(zhng)ʯʽY(ji)ϺܳY(ji),(sh)

(yn)еҪXһ}(CaO!Al2O3)}XSL(zhng)ʯ(2CaO!Al2O3!SiO2);(sh)(yn)ijеҪ}XSL(zhng)ʯ(2CaO!Al2O3!SiO2)

)(qing)ʯҟY(ji)̎ԭVX64.24%,Y(ji)X_(d)47.33%~55.83%,еX?j)H8.71%~14.6%,Xܳ_(d)82.8%,õ^õܳ,f(shu)Ï(qing)ʯҟY(ji)̎еƷλXVǿе

)(qing)ʯҟY(ji)Y(ji)ϵܳ^,

(؟(z)ξ݋ ܊)

(Ͻӵ13(y))

2(sh)(j)@ʾ,ʯՓֵQʯ1.20r(sh),(sh)H89.10%,Ͻ(jng)(j)g(sh)ָ(bio)Ҫ;ʯ^(gu),С,(do)Na2CO3ēpʧ;ʯ^(gu),mȻɫ@^ߵĿ,(hu)ʹʯM(fi)ӷ(yng)(do)Xpʧ,(jng)(j)ϲ,a(chn)(sh)`,ʯՓֵQʯ1.20mˡ3.4 ߷(yng)ض

3 (yng)ض׃(du)ʵӰ

(yng)ض,  ,%

)ԭҺNa2CO3ĝ;2)Na2CO3VĺҺ;3)ʯ;

)(yng)ض

@øߵĿʺͺõĽ(jng)(j)g(sh)ָ(bio),(yng)ȡ(yng)IJ:

)ԭҺNa2CO3ȵĿƷ(yng)160g/l~180g/l;

)ӏ(qing)_Na2CO3VĺҺ<35%;

)(yn)ʯՓֵQʯ1.20;

)(yng)ضȿƑ(yng)>95  

īI(xin):

.083.286.087.488.189.190.0

3(sh)(j)@ʾ,(yng)ض<95  r(sh),_(d)(jng)(j)g(sh)ָ(bio)Ҫa(chn)(sh)`,(yng)ضȿƑ(yng)>95  

1#.pұW(xu) M#.:ұ𹤘I(y). 2#XVֹ˾XSl(f)܇gԭʼӛ䛱 Z#. 3#XVֹ˾XSl(f)܇gg(sh)ˆ(bo) Z#.

(؟(z)ξ݋ ܊)

Y(ji)Z(y)

ʵӰ:


Aڭh(hun)Ƽ޹˾ɽ(ni)дџX\ИI(y)I(y)(j)Kџͷ۠(x)32580010001250Ŀ a(chn)50-500ÿa(chn)ܣɼg(sh)D(zhun)׌ɳO(sh)a(chn)Ʒ

Aڭh(hun)�Ƽ޹�I(y)YԴߎXИI(y)a(chn)ĻD(zhun)G\(yn)D(zhun)ʿ10%ϣa(chn)5%10%ܺĽ20%a(chn)_(d)50-500t/dӹ(ji)ܭh(hun)ֱԃ18637113703(΢̖ͬ(ho))Aڭh(hun)�Ƽ˾\(chng)(w)Sr(sh)gӭǰ(li)^!

I(y)ۺ(w)
1ǰ҂ṩԔ(x)Įa(chn)ƷBӰĿԸ(j)͑̎Ҫ]męC(j)ͲԔ(x)Ĉ(bo)r(ji)ͬr(sh)߀ṩP(gun)ڏSa(chn)܇gC(j)\(yn)РB(ti)ҕl͑^
2(dng)͑†ԺAڼg(sh)̎Ҫȥ͑F(xin)(chng)̽Ԕ(x)š̲ÈDԼA(ch)D
3҂Sr(sh)ņTգҕl͸M(jn)͑O(sh)a(chn)M(jn)(yn)O(sh)
4O(sh)Sǰ҂(hu)ԇC(j)\(yn)24Сr(sh)ṩԔ(x)ęzy(c)(bo)SͬO(sh)xl(f)؛
5O(sh)䵽_(d)F(xin)(chng)҂M(fi)ۺ󹤳̎_(d)F(xin)(chng)ؓ(f)؟(z)͑b{(dio)ԇֱO(sh)a(chn)ؓ(f)؟(z)Ӗ(xn)ˆT͑ȫa(chn)ɻع˾

 


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