APPLICATIONS
The E-impeller design optimizes the mixing and kneading of high viscosity materials by providing enhanced shear and dispersion. Ideal for processing polymers, resins, and other viscous materials where uniform mixing and thermal control are critical.
PROCESS METHOD
The E-impeller design optimizes the mixing and kneading of high viscosity materials by providing enhanced shear and dispersion. Ideal for processing polymers, resins, and other viscous materials where uniform mixing and thermal control are critical.
TYPICAL PROCESS
Pre-treatment process for plumbous zinc ore (an ore containing lead (Pb) and zinc (Zn)):
1. Crushing & Grinding
The ore is crushed and ground to liberate Pb and Zn minerals from the gangue (waste material).
2. Froth Flotation (Separation of Pb & Zn Minerals)
Conditioning: The ore slurry is mixed with collectors (e.g., xanthates) and frothers (e.g., pine oil) to make Pb/Zn minerals hydrophobic.
Selective Flotation:
Lead Flotation: First, galena (PbS) is floated by depressing sphalerite (ZnS) using sodium cyanide (NaCN) or zinc sulfate (ZnSO₄).
Zinc Flotation: After lead removal, sphalerite is activated with copper sulfate (CuSO₄) and floated.
3. Leaching (If Required for Impurity Removal)
Acid Leaching (H₂SO₄): Removes oxide impurities.
Alkaline Leaching (NaOH): Removes amphoteric impurities like arsenic.
4. Precipitation & Purification
Zinc Precipitation: Zinc can be precipitated as Zn(OH)₂ or ZnCO₃ by pH adjustment.
Lead Precipitation: Lead can be precipitated as PbS or PbCO₃.
5. Smelting or Electrolysis (Final Extraction)
Lead: Smelted to produce Pb bullion.
Zinc: Roasted to ZnO, then reduced or processed via electrowinning.
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APPLICATION FIELDS
FEATURES
Effective self-cleaning to minimize dead zones, product accumulation and product degradation
Excellent kneading and mixing for better homogenization
Effective heat transfer
High surface renewal efficiency
Large free vapor volume
Precise and uniform temperature control due to large heat transfer areas
Continuous or batch processing
Process intensification
Processing of sticky and highly viscous products
Residence time is independent from agitator speed, wide and flexible range of average residence times
Reliable process scale-up from pilot to industrial units
Large production capacities, economy of scale
Maximum process yield per unit volume
Reliable, robust design
Short return of investment
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