ࡱ > R bjbj < } } + ? ? ? S S S 8 < S (O . / C wN yN yN yN yN yN yN HQ S b yN i ? O @ O O yN N 2 2 2 O 8 ? wN 2 O wN 2 2 > h ' ? +v}Q S * t 5? cN N 0 (O E? X LT ]- LT ? ? LT ? {B O O 2 O O O O O yN yN [0 2 O O O (O O O O O LT O O O O O O O O O : +Tёireq/lScё-NՋc"} hNNcvgeNg'Y_lNgveY[f_e SNwQybƖV gPlQSSN 1 0 0 1 6 0 Xd(W\ՋW@x NR+R[0lS>\#nTqxۏLq/lS]z-NՋ[5up]z[ NTagNv^`Q00lS>\#nՋ~ghfmR4 % ~ 1 2 % v/lSё%cSs gؚSN0R9 9 % #n+TёSc6R(W0 . 5 g / t NN0qxp^ye Ջ~ghfSeёTMO8 9 . 6 4 g / t VExkؚ#nlMHeg][#n+Tё2 ~ 7 g / t 0]zǏz-N^勧c6RSe4lR0q#nbR0QRk%cSnxOё^\EQRV6e0 sQ.͋0lS>\#nqxq/lS%cS-NՋ -NVR{|ST F 8 3 1 e.sh_xA ezS1 0 0 7 - 7 5 4 5 2 0 1 9 1 0 - 0 0 0 0 - 0 0 P i l o t S c a l e T e s t t o R e c o v e r G o l d f r o m G o l d - b e a r i n g M a t e r i a l b y M o l t e n C h l o r i n a t i o n L I A N G D o n g - d o n g , G U O C h i - h a o , Y U A N C h a o - x i n , L I D a - j i a n g , L I Y i - b i n , S U N Y a n - w e n ( B G R I M M T e c h n o l o g y G r o u p , B e i j i n g 1 0 0 1 6 0 , C h i n a ) A b s t r a c t B a s e d o n r e s u l t s o f l a b o r a t o r y e x p e r i m e n t , p i l o t s c a l e t e s t o f m o l t e n c h l o r i n a t i o n p r o c e s s s e l f - d e v e l o p e d b y B G R I M M t o t r e a t c y a n i d i n g t a i l i n g s a n d c a l c i n e w a s c o n d u c t e d . A d a p t a t i o n o f e l e c t r i c f u r n a c e p r o cess in different conditions was investigated. The test results of cyaniding tailings show that the highest gold volatilization rate is 99% and gold content in slag can be controlled at 0.5 g/t below with addition of 4%-12% calcium chloride. The test results of calcine (bottom materials of roasting furnace) with gold content of 89.64 g/t show that gold content in slag is 2-7 g/t due to high Fe/Si ratio and poor sedimentation of slag. In order to insure sufficient metal recovery, moisture of raw material shou l d b e c o n t r o l l e d , s l a g c o m p o s i t i o n s h o u l d b e a d j u s t e d , a n d s u b s e c t i o n v o l a t i l i z a t i o n d u r i n g e n g i n e e r i n g d e s i g n s h o u l d b e c o n s i d e r e d . K e y w o r d s c y a n i d i n g t a i l i n g ; c a l c i n e ; m o l t e n ; c h l o r i n a t i o n v o l a t i l i z a t i o n ; p i l o t s c a l e t e s t 0lS>\#n\O:NqS^gXX[ NN`S(uW0W0algsX؏RgRNǑ(u0lSxmQ]zuNONvЏLb,gTsXΘi[ 1 - 2 ] 0Te0lS>\#n-N؏+T g'Yϑ gNё^\ g N[vV6eN