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Different kind plastic oil yeild also different. as usual it will be 40-50% oil, 40 -50 slag, 5% non-condensable oil gas. and some other is water and loss.
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Iron Mineral Recovery in Iron Tailings - Liuling Iron Ore Concentrator
Liu Ling iron ore beneficiation plant built in 1978 and put into production, now processing capacity of 300,000 t, in 1996 the total reached 4,000,000 t of tailings discharge beneficiation. The service life of the original design tailings pond was 12 years. Since 1990, the tailings pond has been in service for a long time. In order to alleviate the pressure of small storage capacity, make full use of resources, and improve the economic benefits of enterprises, the concentrator conducted industrial tests for comprehensive utilization of tailings and achieved good results.
The ore processed by Liuling Iron Mine is Anshan-type lean magnetite. The tailings mainly contain quartz , ordinary amphibole, iron amphibole, limonite, clay, mica and the like. The multi-element analysis and mineral composition of tailings are shown in Table 1 and Table 1, respectively. The particle size composition of tailings is shown in Table 3.
Table 1 Multi-element analysis of tailings (%)
ingredient
TFe
SiO 2
Al 2 O 3
CaO
MgO
K 2 O
Na 2 O
P 2 O 3
S
Burning down
Quality score
14.20
48.64
12.34
6.24
4.82
4.12
3.64
0.23
0.31
3.00
Table 2 Mineral composition of tailings (%)
Mineral name
magnetite
Limonite
quartz
Amphibole
Iron amphibole
Garnet
Carbonate
Phosphate
other
Quality score
2.70
16.0
15.6
29.4
8.1
4.0
2 to 4
3.0
Small amount
Table 3 tailings particle size composition
Particle size / mm
Yield/%
grade/%
Occupancy rate /%
+1.00
4.01
11.28
3.10
-1.00+0.495
9.31
12.41
7.91
-0.495+0.295
10.46
13.76
9.86
-0.295+0.147
14.47
13.76
13.64
-0.147+0.074
17.78
14.04
17.10
-0.074+0.043
17.96
15.01
18.46
-0.043
26.01
16.80
29.93
Total
100.00
14.60
100.00
According to the small test results, combined with the on-site production process, the determined tailings comprehensive recovery process is: the tailings of the original process are screened by a 0.5mm sieve, and the +0.5mm material is dehydrated and stored separately, -0.5mm The slurry is pumped to the vertical thick box of φ2m and 4m high for dewatering. The overflow water is drained to the high level water tank for the magnetic separation water; the bottom stream concentration is controlled at 22%~25%, and it flows to the distribution box. The φ1000mm spiral concentrator and the spiral concentrator are divided into three groups in a star arrangement. After the selection, the iron-containing material is dehydrated and air-dried as a product, sent to the cement plant, and the tailings pump to the tailings dam.
The production results show that the iron ore material with TFe content greater than 22% can be obtained from the tailings by the spiral concentrator. The average recovery rate of the iron-containing materials is 11.21%, and the comprehensive recovery rate of the total iron reaches 84.62%, which can make nearly 30%. The tailings are utilized; the final tailings yield is only 43.52%, which reduces tailings emissions and increases the service life of the tailings pond. After dehydration and air drying, the iron-containing material produced can replace 60%~65% of the clay for the Portland cement raw material acid material, which can save 40% of the iron powder (TFe=50%) and reduce the batching process. Reduced abrasive energy consumption.