Anionic PAM for Mining: Supplier & Dosage

Anionic polyacrylamide (APAM) is the most widely used flocculant in mining operations worldwide. From tailings clarification to process water recovery, APAM reduces water consumption, improves settling rates, and helps mines meet discharge regulations. This guide covers APAM selection, dosing, and how to source it directly from Chinese manufacturers.

Why Mining Operations Choose APAM

Mining generates enormous volumes of fine-particle slurries — tailings ponds, thickener feed, and process water circuits all contain suspended solids that must be removed efficiently. APAM works by:

• Bridging mechanism — Long polymer chains adsorb onto multiple particles simultaneously, forming large, fast-settling aggregates
• Charge neutralization — The anionic charge interacts with positively charged mineral surfaces (iron oxides, clays)
• Selective flocculation — Can be tuned to selectively flocculate target minerals while leaving others in suspension

Compared to inorganic flocculants (alum, ferric sulfate), APAM achieves equivalent or better clarification at 10–50× lower dosage by weight, significantly reducing chemical costs. Learn more about PAM for mining tailings management and how it compares to other treatment methods.

Our our APAM for mineral processing is engineered for exactly this use case, with batch-level quality control from our Zhengzhou facility.

Mining Applications by Ore Type

APAM Technical Specifications

The two key parameters for mining-grade APAM are molecular weight and degree of hydrolysis (also called anionic degree or charge density).

Molecular Weight

For mining applications, high molecular weight APAM (15–25 million Da) is preferred because:

• Longer polymer chains create stronger bridging between particles
• Larger flocs settle faster in thickeners (higher underflow density)
• Lower dosage required per unit of solids treated

For a deeper understanding of how molecular weight affects performance, see our molecular weight selection guide.

Degree of Hydrolysis (Anionic Degree)

Hydrolysis degree determines how many carboxylate groups are present on the polymer chain:

• Low (10–20%) — Suitable for high-pH circuits, alkaline tailings
• Medium (25–35%) — General-purpose mining grade, most common
• High (40–50%) — For fine clay-rich slurries, difficult-to-settle particles

Thickener Performance Data

Field data from coal washing plants using ChinaPAM APAM (18M MW, 30% hydrolysis):

Dosing and Preparation Guide

Step 1: Prepare Stock Solution

Dissolve APAM powder in clean water at 0.1–0.3% concentration. Use a dedicated mixing tank with slow agitation (30–60 RPM). Allow 45–90 minutes for complete dissolution. Do not use high-shear mixing — it degrades the polymer chains.

Step 2: Dilute Before Dosing

Dilute stock solution to 0.01–0.05% before adding to the process stream. This ensures even distribution and prevents localized overdosing.

Step 3: Jar Test to Optimize Dosage

Run jar tests with your actual slurry at 3–5 dosage levels. Measure settling rate and overflow clarity. The optimal dosage is the lowest dose that achieves target clarity — overdosing wastes chemical and can actually worsen performance (charge reversal). For detailed jar test procedures, refer to our jar test procedure guide.

APAM Bulk Pricing (2026)

Shipping to Mining Regions

ChinaPAM ships APAM to major mining regions worldwide:

• Australia — Port of Tianjin to Melbourne/Perth, 18–22 days transit
• South Africa — Port of Qingdao to Durban, 22–28 days transit
• Chile/Peru — Port of Shanghai to Callao/Valparaíso, 28–35 days transit
• Indonesia — Port of Tianjin to Jakarta, 10–14 days transit
• Canada — Port of Shanghai to Vancouver, 14–18 days transit

All shipments include: COA, MSDS, packing list, commercial invoice, and bill of lading. Fumigation certificate available for wood pallet shipments. See our coal washing application guide and sand washing guide for more mining-specific information.