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Help CenterOre Classifying and Separation Hydrocyclones High Efficiency
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1, Mechanism
A hydrocyclone is a device to classify, separate or sort particles in a liquid suspension based on the ratio centripetal force to fluid resistance. The feed is introduced under pressure through the tangential entry at a high speed. The motion of feed, mix of media and material particles forms centrifugal force field.
Under the force field, including viscosity resistance, buoyancy force, gravity, etc, the trajectories of particles (or liquid phase) are different due to their different sizes, densities. The coarse particles (or liquid phase) or particles (or liquid phase) with high density, motion to periphery, and will be discharged through apex of the vortex. The fine particles (or liquid phase) or particles (or liquid phase) with low density, motion to the core, and will be discharged through vortex finder. Therefore, the separation of particles by the fineness and density is achieved.
2, Application field
Hydrocyclones have found wide applications in
1. Combination with grinding mills in closed-circuit classification;
2. Combination with fine screens in closed-circuit multi-classification;
3. Desliming before tailings impoundment;
4. Degritting in non-metallic minerals processing;
5. Classification and desliming before gravity separation;
6. Thickening before tailings convey;
7. Oil-sand, oil-water separation operation oil taping industry.
3, Features
1. The feed inlet is specially designed as to reduce the wearing and stabilize the feed flow.
2. The inner lining is made of the advanced CNU wear-resistance material co-developed with Ukraine.
3. The special design of the column and cone enable the enlargement classification space; reduce the particle size of spigot products, and mineral particles in qualified particles size fraction. (10~20% higher than conventional hydro cyclones).
4, Technical Data
Model |
CZ75 |
CZ100 |
CZ150 |
CZ200 |
CZ250 |
CZ300 |
CZ350 |
CZ500 |
CZ660 |
10 |
Q |
2.8 |
7 |
9 |
11 |
25 |
36 |
45 |
80 |
200 |
350 |
D0 |
18±2 |
22±2 |
36±4 |
40±4 |
54±6 |
70±5 |
83±8 |
100±10 |
150±10 |
205±20 |
Du |
8±1 |
10±2 |
16±2 |
18±4 |
18~30 |
34±4 |
42±5 |
55±5 |
80±10 |
105±10 |
Overflow size |
10~37 |
14~40 |
19~43 |
26~53 |
30~60 |
37~62 |
40~75 |
44~88 |
74~150 |
90~210 |
Notes:
Q: Throughput m3/h (under the condition that feeding pressure P=0.01 Mpa)
D0: overflow diameter mm
Du: apex diameter mm
Overflow size: μm
Examples
1. In order to improve the throughput of secondary grinding mill, CZ 350 hydro cyclones are used in closed circuit in secondary grinding in Fankou Zinc-lead ore.
No. |
Item |
Previous data |
After use of CZ350 hydro cyclones |
1 |
Secondary mill throughput |
2050t/d |
2655.4t/d |
2 |
Secondary classifier overflow particle size |
88.0%-200 mesh |
85.4%-200 mesh |
3 |
Overflow density |
39.05% |
38.61% |
4 |
Classification efficiency |
35% |
42.20% |
5 |
Spigot product density |
/ |
74% |
6 |
Grinding mill q-200 mesh |
0.785t/(m3. h) |
1.068t/(m3. h) |
The efficiency of CZ350 is 42.2% | |||
2. In order to reduce the particle size of grinding products, CZ500 hydro cyclones have been used to replace Krebs hydrocyclones in secondary grinding in Baotou iron ore-dressing plant.
The result indicate that the secondary ball mill q-200 mesh is 0.636t/m3. H, increased by 15%; the overall overflow size -200 mesh 93.15%, increased by 6.09%; the classification efficiency increased by 14.26%.
3. The tailings separation in Fankou Zinc-Lead Ore.
The feed concentration is 22.53%, -19 μm 37%. The spigot product rate is 60.37%, concentration is 70.94%. -19 μm size fraction recovery rate is 88.90%. The classification efficiency is 76.07%. CZ hydro cyclones have solved the problems of sand in tailings, enabling the sustainable development of Fankou Zinc-Lead Ore.
4. The desliming of fine grained limenite in Panzhihua Iron Ore.
One set of 6xCZI-100 hydro cyclones is used. Ore-feeding concentration is 4.01%, -10 μm 32.17%. The indexes are as following: Sipgot products density is 36.01%, yield rate is 69.69%, -10 μm 92.92%. The recovery rate of +10 μm is 95.44%. The classification efficiency is 80.03%.
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