PolyDADMAC Cationic Flocculant for Coal Slurry Dewatering and Clarification
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Product Overview
PolyDADMAC, also known as Poly Dimethyl Diallyl Ammonium Chloride or PDADMAC, is a high charge density cationic polymer widely used in mining, wastewater treatment, sludge dewatering, and industrial clarification processes.
In coal washing and coal slurry treatment, fine suspended particles are often difficult to settle because of their small particle size and stable negative surface charge. Bluwat PolyDADMAC neutralizes the surface charge of coal fines, clay, and other suspended solids, helping particles form stronger and larger flocs. This improves clarification efficiency, enhances slurry dewatering performance, and supports water recycling in coal preparation systems.
Bluwat BLU DA Series PolyDADMAC is supplied in liquid form with different solid content and viscosity grades. It is easy to dilute, easy to dose, and suitable for use alone or together with inorganic coagulants such as Polyaluminium Chloride.
Why Use PolyDADMAC for Coal Slurry Dewatering?
Coal slurry wastewater usually contains fine coal particles, clay, mineral solids, and high suspended solids. Poor flocculation can lead to slow settling, high turbidity in overflow water, poor filter cake formation, and higher treatment cost.
Bluwat PolyDADMAC provides strong cationic charge neutralization to destabilize these suspended particles quickly. It helps improve the formation of dense flocs, making the slurry easier to clarify, thicken, and dewater.
This makes it suitable for:
- Coal washing wastewater clarification
- Coal slurry thickening
- Fine coal tailings treatment
- Settling pond clarification
- Filter press and belt press pretreatment
- Process water recycling in coal preparation plants
- Mining wastewater solid-liquid separation
Key Benefits
High Cationic Charge Density
PolyDADMAC provides strong positive charge, which helps neutralize negatively charged suspended solids in coal slurry. This improves particle destabilization and promotes faster floc formation.
Better Clarification of Recycled Water
By reducing suspended solids and turbidity, PolyDADMAC helps produce clearer overflow water for reuse in coal washing and mineral processing systems.
Improved Sludge and Slurry Dewatering
The product supports better solid-liquid separation and can help reduce water content in sludge or slurry during dewatering processes.
Easy Liquid Dosing
Liquid PolyDADMAC is easy to dilute and feed into the treatment system, making it suitable for continuous dosing in coal preparation plants.
Works Alone or with PAC
PolyDADMAC can be used as a primary coagulant or together with Polyaluminium Chloride to improve treatment performance for high-turbidity wastewater.
Wide pH Adaptability
Bluwat liquid PolyDADMAC can work across a wide pH range, which makes it flexible for different coal slurry and mining wastewater conditions.
Economical at Low Dosage
With strong charge neutralization ability, PolyDADMAC can achieve effective clarification at relatively low dosage after proper jar testing.
Typical Applications in Coal Mining
Coal Slurry Clarification
PolyDADMAC helps aggregate fine coal particles and mineral solids, improving sedimentation and reducing overflow turbidity.
Coal Washing Wastewater Treatment
Used in coal preparation plants to improve process water quality and reduce suspended solids in recycled water.
Tailings and Sludge Dewatering
PolyDADMAC improves floc structure before thickening, filter press, or belt press treatment, supporting better dewatering efficiency.
Settling Pond Treatment
It can be dosed into high-turbidity coal slurry water to accelerate settling and improve the clarity of supernatant water.
Combined Coagulation-Flocculation Process
For difficult wastewater, PolyDADMAC can be combined with PAC or PAM to achieve better coagulation, floc growth, and final clarification.
Product Specifications
Available Liquid Grades
DA 20% Series
DA 201: Low molecular weight, viscosity below 200 cps
DA 202: Medium molecular weight, viscosity 200–700 cps
DA 203: Medium molecular weight, viscosity 700–1000 cps
DA 204: High molecular weight, viscosity 1000–2000 cps
DA 205: Very high molecular weight, viscosity 2000–3000 cps
DA 40% Series
DA 401: Low molecular weight, viscosity below 500 cps
DA 402: Medium molecular weight, viscosity 500–1000 cps
DA 403: Medium molecular weight, viscosity 1000–3000 cps
DA 404: High molecular weight, viscosity 3000–5000 cps
DA 405: High molecular weight, viscosity 5000–8000 cps
DA 406: Very high molecular weight, viscosity 8000–12000 cps
DA 407: Very high molecular weight, viscosity 12000–15000 cps
DA 408: Very high molecular weight, viscosity above 15000 cps
DA 45% Series
DA 451: High molecular weight, viscosity 8000–12000 cps
DA 50% Series
DA 501: Low-medium molecular weight, viscosity 1000–2000 cps
DA 502: Medium molecular weight, viscosity 2000–3000 cps
DA 503: High molecular weight, viscosity 3000–5000 cps
DA 504: High molecular weight, viscosity 5000–8000 cps
DA 505: Very high molecular weight, viscosity 8000–12000 cps
DA 506: Very high molecular weight, viscosity 12000–15000 cps
DA 507: Very high molecular weight, viscosity above 15000 cps
Recommended Use Method
For coal slurry and mining wastewater treatment, PolyDADMAC should be selected and optimized through jar testing according to wastewater turbidity, suspended solids, pH, and treatment target.
When used alone, it is recommended to dilute PolyDADMAC to 0.5–5% concentration based on solid content before dosing.
The best dosage should be determined by laboratory test and plant trial. Proper dosing point and mixing speed are important. The product should be mixed evenly with the wastewater, while excessive shear should be avoided after floc formation to prevent floc breakage.
Suggested Treatment Process
Packaging and Storage
Bluwat PolyDADMAC liquid is available in 25L drums, 200L plastic drums, and 1000L IBC drums.
Store the product in original containers in a cool and dry place. Keep away from heat, flame, and direct sunlight. Please refer to the product TDS, label, and MSDS for detailed handling, safety, and shelf life information.
Why Choose Bluwat PolyDADMAC?
Bluwat Chemicals is a professional manufacturer and exporter of water treatment chemicals, supplying cationic polymers, coagulants, and flocculants for industrial wastewater, mining, paper, textile, and municipal treatment applications.
For coal slurry dewatering and clarification, Bluwat can help customers select suitable PolyDADMAC grades based on wastewater characteristics, treatment process, and target performance.
FAQ
Is PolyDADMAC suitable for coal slurry wastewater?
Yes. PolyDADMAC is widely used in mining applications including coal, gold, and diamond mining. It is suitable for coal slurry clarification, suspended solids removal, and dewatering pretreatment.
Can PolyDADMAC be used with PAC?
Yes. PolyDADMAC can be used alone or combined with inorganic coagulants such as Polyaluminium Chloride to improve clarification performance.
What concentration should PolyDADMAC be diluted to?
When used alone, it is commonly diluted to 0.5–5% concentration based on solid content before dosing.
How do I choose the right PolyDADMAC grade?
The grade should be selected according to solid content, viscosity, molecular weight, coal slurry concentration, and treatment process. Jar testing is recommended before full-scale dosing.
Does PolyDADMAC help sludge dewatering?
Yes. PolyDADMAC can support the reduction of sludge in dewatering systems and improve solid-liquid separation performance.