Умумий ва ноорганик кимё институти

Таble 11 
Receipts of granulation mixture of Mo concentrate in pilot plant teste 
Index Mixture for 
granulation 
Content of Mo-
concentrate, kg 
Kaolin in 
mixture 
SC polymer in 
the mixture 
water, 
l 
% 
kg 
% 
l 
А 
Control
150 
8 
12 
- 
- 

25 
B 
Experienced 
150 
2 
3 
2,0 
3 

25 
C 
Experienced 
150 
2 
3 
1,3 
2 

25 
D 
Experienced 
150 
2 
3 
0,7 
1 

25 
These mixtures are from the total party of Mo concentrate. Granulation time 
of each batch of 150 kg is 60 min. In mixture with indices B, C, D polymer SC was 
fed diluted with water (1: 5) further stages of production candle end of 
molybdenum middlings were not differed from the existing technology. Thermal 
processing of granule was performed in the calcining kiln, 

300 mm firing time 
was 7 h., oxygen feed rate of 12 m
3
per hour. Strength rolled granules till burning 
was satisfactory. Granules with indices are B, C- heightened solid; D - control 

---

71 
similar to the A composition of the granules in Table 12. 
Таble 12 
The chemical composition of Mo concentrate and candle end of A, B, C, D 
Index
Мо 
Re 
Cu 
S 
Water
Initial
40.19 % 
0.066% 
1.75% 
31.59% 
- 
А 
36.81 
0.016 
1.78 
0.75 
0.10 
B 
37.91 
0.010 
1.77 
0.54 
0.14 
C 
38.84 
0.014 
1.80 
0.22 
0.14 
D 
39.25 
0.009 
1.98 
0.65 
0.23 
Therefore, carried at the JSC «Almalyk MMC» comparative measure pilot 
plant tesetes SC polymer in the novel
composition of the mixture granulation of 
Mo-concentrate has revealed the following: 1) the content of molybdenum in 
grangules of the novel composition from the charge is higher than in the control; 2) 
the content of rhenium in them, after firing of the granules are lower than in the 
control, most notably, from the mixture with containing SC polymer 0.7%, 
indicating a more complete sublimate rhenium heptoxide at firing; 3) The strength 
of the unfired granules from the pilot batches is satisfactory close to the control; 4) 
economically, it is advisable to fix formulation with 0.7% polymer in the novel 
composition of the mixture; 5) the extraction of gold and silver from cakes 
ammoniac leaching of molybdenum was facilitated,which was produced by firing 
the charge of this novel composition.