Noorganik moddalar va mineral o’g’itlar texnologiyasi Mirzaev F.M. va boshq.
. 6 0 с
£ 4 0 J ( N H 4)2S 0 4 - H 2S 0 4
\ 4 ( N H 4)2S 0 4 • H2S 0 4
20
0
20 40 60 80 ( N H ^ z S O ^ (NH4)2S 0 4, %
4 .6 -r a sm . ( N H 4 ) 2 S 0 4 — H 2 S 0 4 — H , 0 tizimida eruvchanlik iz o t c r m a si. 10, 3 0 , 5 0 , 70 va 9 0 X . N c y t r a l i z a t s i y a d a v r i d a n o r d o n m a h s u l o t l a r hosil b o ' l m a s l i g i
u c h u n e r i t m a d a g i s u l f a t ki s l ot as i m i q d o r i
E n u q t a s i d a n p a s t d a
b o ‘lishi, m a s a l a n 10°C 11, 8%, 9 0 ° Cd a esa 19,77 k a m b o ‘lishi kerak.
I shl ab c h i q a r i s h d a sulfat kisl ota sini ng ( e rk i n h ol a t d ag i ) e r i t m a d a g i
m i q d o r i 4 — 12% a t r o f i d a u s h l a b t u r i l a d i . S u l f a t k i s l o t a s i n i n g
t arkibidagi t e m i r va a l u m i n i y bi ri kmal ari g i d r o ks i d l ar ber ib a m m o n i y
su l f a t i ni ng k ri st al la ni shi ga salbiy t a ’sir qilishi m u m k i n :
( F e , A l )
2
( S 0 4) +
6
N H
3
+ 6 H 20 =
= 2 ( F e , A l ) ( O H
)3
+ 3 ( N H
4
)
2
S 0
4
E r i t m a da g i e r k i n ho la t da g i sulfat kislotasi gi dr o k si dl ar n i F e ( O H
)3
hosil b o ‘lishiga y o ‘l q o ‘y ma ydi .
A m m o n i y s u l f a t n i n g koks g a z i d a n ikki usul b i l a n be v os i t a va
bil vosit a olish m u m k i n :
Bevosita sxe ma s i b o ‘y ic ha 6 — 14 g r / m
3
a m m i a k l i koks gazi s m o l a-
d a n t oz a l ani b, ma x s us q u r i l m a ( s a tu r a t or (3) ga yuboriladi 4. 7 - r a s m) .
S a t u r a t o r p o ‘l a t d a n yasa lga n sili ndr i k a p p a r a t , tubi k o n u s s h a k -
l i d a b o ‘lib k i s l o t a g a c h i d a m l i p l i t a l a r b i l a n q o p l a n g a n b o ‘ladi.
S a t u r a t o r n i n g i chki q is mi e r i t m a b il an kristallar a r a l a s h m a s i bilan
t o ' l d i r i l g a n b o ‘lib, toMgan h aj m i a y l a n m a (sirkulatsi ya) b a k (5) bilan
b os hq a r i l a d i . K o k s gazi va a m m i a k ( a ga r da s x e m a be v os i t a t e x n o -
l ogiya b o ‘y i c h a ishlasa) m a r k a z i y q u v u r orqali hosi l b o ‘lgan e r i t m a
k o ‘p i kl ag i ch g a (4) yub or i l ad i . E r i t m a n i a r al as ht i ri s h u c h u n , nas os -
l a r d a n ( 1 4 , 1 5 ) foyda la ni l a di . Kristall a r a l a s h m a s i s ent ri fuga ga (9)
j o ‘n a t il adi . S e n t r i f u g a d a t u z n i n g t ar k ib i d a g i k is lota ni ka ma yt i ri s h
2 3 -
353