【二氧化硅】Development and Application of High Quality Silica Brick for Coke Ovens.pdf
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9、 i s s t i l l a s hi gh a s 5 I n or de r t o r e a l i z e d om e s t i c s uppl y o f r e f r a c t o r i e s f o r t h e s e c o n d p h a s e p r o j e c t c o k e o v e n o f Ba o s h a n I &S ( Gr o u p)Co mp l e x,f r o m 1 9 8 5 LRCO ha s be e n put t i n g e m pha s i s o n t he r e s e a
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11、nt 2 1 Ra w M a t e r i a l s S i l i c a f r o m Ti e me n( He n a n p r o v i n c e) wa s u s e d as s t a r t i ng m a t e r i a 1 The p hy s i c a l a nd c he m i c a l pr op er t i e s of s i l i c a i s l i s t e d i n Ta bl e 1 Tab l e 1 Phy s i c a l a nd c h e m i c a l pr o pe r t i e s o
12、f s i l i c a Ch e m i c a l c o mp o s i t i o n ( : Re f r a c t 0 r i n e s s I t em S i 02 A1 2 O3 F e 2 O3 Ca O + M g O R2 O Ti 02 ( ) Av er ag e v al u e 98 7 0 4 0 3 t r a c e O 12 t r a c e 1 75O Fl uc t ua t i ng va l ue 98 5 99 2 0 3 0 5 0 2 0 5 O O9 01 2 2 2 Expe r i m e nt Pr oc e s s Ac
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14、 z c ont e nt a nd t r ue d e ns i t y of t he p r od uc t s Powde r C c o nt a i ni ng A1。 w a s us e d t o l owe r t he r m a l ex pa ns i o n r a t e,a nd powde r D t o d e c r e a s e t he a ppa r e nt p or os i t y t o obt a i n h i gh bul k de ns i t y s i l i c a br i c k f or c a r b oni z a
15、 t i on r o om A ,B,C a nd D wer e gr ound t o f i ne s wi t h s i z e l e s s t ha n 0 1 m m s ep er a t el y a nd a dd e d t o r a w m fl t e r i a l s e p e r a t e l y and m i xe d i n di f f er e nt amount W i t h t h e s ame e xpe r i m e nt c on di t i on s a m pl e s we r e ma de 维普资讯 http:/
16、 40 W A NG Hongme i ,XI A O Chang yu 2 3 Ex pe r i m e nt Re s u l t Ef f e c t o f A a nd B ad di t i o n o n r e s i dua l q ua r t z c on t en t a nd t r ue de ns i t y o f pr o duc t ar e s ho wn i n Fi g1 a nd Fi g2 Her e A a nd B wa s m i x e d wi t h 8 l i m e w he y r e s p e c t i ve l y an
17、 d p r o duc t was s i n t e r e d a t 1 42 0 C f o r 48 ho ur s i n t unne l ki l n Fr o m Fi g1 a nd Fi g2,i t c an be f oun d t ha t A a nd B c a n de c r e a s e t he r e s i dua l qua r t z c on t e nt a nd t r ue de n s i t y,a nd A has a be t t er e f f e c t t ha n BW he n t he a d di t i on
18、 of A i s 1 5 ,pr od uc t wi t h r e s i dua l q ua r t z c o n t e n t 0 5 ,t r u e d e n s i t y 2 3 1 i s o b t a i n e d Ef f e c t of A a nd B on r e f r a c t o r i n e s s unde r l o a d 2 3 8 2 3 6 2 3 4 2 3 2 2 3 O Ad d i t i o n o f A o r B( ) Fi g 1 Ef f e c t of A a nd B a ddi t i on on
19、t r ue de n s i t y o f t he b r i c k ( RUL)i S i l l u r s t r a t e d i n Fi g 3 W h e n t h e a d d i t i o n of B i s l e s s t ha n 2 ,B ha s no e f f e c t on t he RU L of p r o duc t s Howe ve r, RU L de c r e as e s obv i ous l y wi t h t he i n c r e as e of A W he n t he a ddi t i on of A
20、 i S 2O , RU L d e c r e a s e s f r o m 1 6 80t O 16 5 0 W he n t he a ddi t i on o f A i S l e s s t ha n 1 5 ,RU L i S s t i l l be t we e n 1 67 0 C a nd 1 68 0 C Ef f e c t o f c o m po s i t i o n o f c ompos i t e m i ne r a l i z e r on t h e pr o pe r t i e s of pr o duc t s i S l i s t e d
21、 i n Tabl e 2 Compos i t e m i ne r a l i z e r s 1 2 an d 3 ar e C O rn po s e d o f A B a nd l i me whe y 5 4 3 2 A d d i t i o n o f A o r B ( ) Fi g 2 Ef f e c t of A a nd B a ddi t i on on r e s i d ual qu ar t z c ont e nt o f t he br i c k Tab l e 2 Ef f e c t of c o m po s i t e m i ne r a l
22、 i z e r c om p os i t i ons o n pr o pe r t i e s Com p os i t i o n I t em 1 2 3 4 5 6 A 0 5 1 O 1 0 1 O 1 0 1 O B 0 5 05 1 0 1 O 1 0 1 0 Addi t i v es C 0 O 0 05 1 O 0 5 D 0 0 0 0 0 3 0 Li me s l ur r y 8 8 8 8 8 4 S i O2 ( ) 9 6 2 9 5 8 4 9 5 6 8 9 5 7 3 9 5 8 9 5 4 Ref r a c t or i ne s s ( ) 1
23、 71 0 171 0 17 1O 171 0 1 7 1 0 1 71 O App p or ( ) 17 19 17 19 17 19 17 1 9 17 1 9 1 3 1 5 Tr u e d ens i t y 23 3 23 2 2 31 2 3 1 2 31 231 RUL ( 02 M Pa) ( ) 168 0 1 6 80 16 80 16 80 16 70 1 680 Ex p a n s i o n r a t e ( 1 0 0 0 )( ) 1 2 8 l _ 2 7 1 2 4 1 2 O 1 1 6 1 2 2 Th e r c o n ( 1 0 0 0 C)
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