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copper processing plant, copper flotation plant, copper extraction plant
Introduction
Flotation is the common copper processing technology, which can be used for sulfide ore and oxide ore. The copper flotation plant usually includes following steps: crushing and screening, stage grinding and flotation, thickening and dewatering, and copper concentrates recovery.
Copper Mining Equipment
Copper Processing Plant
One-stage Grinding+Flotation
Application
It is suitable for smooth and flat copper ores in coarse and evenly embedding granularity. Which is loosely combined with gangue minerals.
Main technology conditions
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Grinding Fineness
-200 mesh 50%~60% in common, basic monomer dissociation for copper minerals
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Flotation Technology
Ideal flotation indexes can be required through coarse flotation, scvanging and 1-3 concentrating.
Advantages
This flow is simple and with low cost. It is widely used in small and middle copper processing plant.
One-stage Grinding+Coarse Flotation Concentrates Regrinding Flow
Application
It is suitable for single bornite sulfide ore or copper-molybdenum ore.
Main technology conditions
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Grinding Fineness
Through one-stage grinding, the fineness reaches -200 mesh 40%~70%. After flotation, the coarse concentrates are regrinded. The regrinding fineness is according to the monomer dissociation condition.
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Flotation Technology
Through coarse flotation and scvanging, an amount of tailings are removed.
Characteristics
If the grade of raw ore is low with large capacity, ideal economy efficiency can be acquired. Because of coarse concentrats regrinding, the granularity is fine. Copper minerals, gangue minerals and pyrites can be dissociated monomer. The flotation concentrates has high quality.
Two-stage grinding + two-stage(one-stage) flotation process
Application
It is suitable for uneven thickness copper ore. To reach most copper mineral monomer dissociation, the grinding fineness is thinner. Under this condition, two-stage grinding is applied.
Main technology conditions
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Grinding Fineness
Minerals under 200 mesh is about 80% or more. (To dissociate most of the mineral monomers)
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Flotation Technology
After the first stage coarse grinding, part of coarse copper minerals is recovered in flotation. The grade of this part of copper concentrates has high grade, which can enter final concentrating or be as the final concentrates with the comcentrates after flotation.
Advantages
The two-stage grinding has better effects in grinding efficiency and predicting overgrinding than one-stage fine grinding. Therefore, it is commonly used in middle and large copper processing plant.
Index reference of copper recovery rate
| Types of copper ore | Copper grade of sulfide ore≥1 | 0.4≤copper grade of sulfide or＜1 | Copper grade of sulfide ore<0.4 |
| Copper grade of mixed ore≥1.5 | 0.6≤copper grade of mixed ore＜1.5 | Copper grade of mixed ore<0.6 | |
| Copper grade of oxide ore≥3 | 1≤copper grade of oxide ore＜3 | Copper grade of oxide ore<1 | |
| Sulfide ore | 82%~90% | 79%~88.5% | 76%~83% |
| Mixed ore | 80%~87% | 76%~85.5% | 73%~79.5% |
| Oxide ore | 71.5%~78.5% | 68.5%~77% | 66.0%~77% |
Related cases
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Pakistan 1,500t/d Copper Mineral Processing Plant
The raw ore was characterized by simple composition. It consisted of metallic minerals (copper pyrite and pyrite) and non-metallic minerals (quartz and chlorite).
Details -
Myanmar 500tpd Copper Mine Flotation Plant Project
One-stage crushing-grinding and classifying-flotation （one-stage roughing, two-stage concentration and three-stage scavenging）.
Details -
Yunnan 4,400t/d Copper Mineral Processing Plant
The raw ore was high-sulfur Cu-S ore in the form of dense lump. Cu, S and Fe were closely associated. With Cu minerals being fine, the ore was of hard beneficiation.
Details