English
创建于04.27
The Core Role of Flocculants in Mining
I. The Core Role of Flocculants in Mining
Solid-liquid separation
Tailings dewatering: Accelerate the sedimentation of fine particles (such as clay and mineral mud), reduce water accumulation in tailings ponds, and improve the utilization rate of return water.
Concentration tank efficiency: Shorten sedimentation time and increase the concentration of underflow (solid content can be raised from 10% to over 50%).
Wastewater treatment
Heavy metal removal: Heavy metal ions (such as Cu²⁺, Pb²⁺) are precipitated through adsorption-flocculation and discharged up to standard.
Suspended solids (SS) control: Reduce turbidity to meet environmental protection regulations (such as Chile's "Water Quality Standard DS90").
Process optimization
Flotation assistance: Selective flocculation improves mineral separation (such as the separation of quartz and hematite in iron ore).
Pipeline transportation: Reduce the viscosity of the pulp and decrease energy consumption.
Ii. Classification and Characteristics of Mining Flocculants
Classified by chemical composition
Inorganic flocculants such as aluminium sulfate and polyaluminium chloride (PAC) for the treatment of high-turbidity wastewater , Low cost,Much residue
Organic high-molecular polyacrylamide (PAM) tailings dewatering and concentrate concentration , Fast sedimentation and low dosage, High price
Natural flocculants such as chitosan and starch derivatives are environmentally sensitive areas (such as bio-mining areas) and degradable, Poor stability
Classification by the nature of electric charge
Cationic neutralizing negatively charged particles (such as silicate slime) Copper mine tailings dewatering (Escondida, Chile)
Anionic bridging of positively charged particles (such as hematite) for the treatment of tailings from iron ore flotation
Nonionic hydrogen bonds adsorb neutral granular coal slime water for sedimentation
3. Classification by molecular weight
Low molecular weight (<1 million) : used for charge neutralization (such as PAC).
Medium and high molecular weight (1 million -15 million) : Forms flocs (such as the application of PAM in copper tailings).
Ultra-high molecular weight (>15 million) : High-viscosity scenarios (such as deep-sea mining slurry treatment).
Iii. Key Factors for the Selection of Mining Flocculants
Ore properties
Silicate ore (negatively charged) → cationic flocculant
Oxide ore (positive charge) → anionic flocculant
Water quality parameters
pH value: Aluminum salts are optimal at pH 6 to 8, while iron salts are more effective at pH 4 to 6.
Salinity: High-salt wastewater requires anti-electrolyte flocculants (such as amphoteric PAM).
Process requirements
Sedimentation rate: Select high molecular weight PAM (such as Magnafloc® 155).
Filter cake moisture content: Anionic PAM+ lime in combination (moisture content can be reduced to below 25%).
Four Future technological direction
Nano-flocculants: such as modified nano-SiO ₂, for treating ultrafine particles (<1μm).
Compound formula: PAM+ graphene enhances flocculation strength (Patent CN202310123456.7).
Low-carbon type: Low-temperature adaptable flocculant (suitable for high-altitude mining areas in Chile).
HOME
All Products
Why Choose Us
Sales Network Advantage
our Partner
PRODUCTS
ABOUT US
CONTACT US
Cationnic PAM
High-purity polyaluminium chloride
Polymer for Fracturing
Polymer for CEOR
Know Us
Enterprise Information
Production Line
Contact Us
ECOLINK
Price is in US dollars and excludes tax and handling fees
© 2024 LingXi Ltd. Trademarks and brands are the property of their respective owners.
PHONE
WhatsApp
EMAIL