Acid & Alkali Resistant Conveyor Belts for Chemical & Mining Industries

Acid & Alkali Resistant Conveyor Belt

JINFLEX acid & alkali resistant conveyor belts are used for transporting corrosive materials, widely applied in chemical plants, paper mills, fertilizer plants, mines (acidic ore processing), ports (acidic/alkaline bulk cargo), and electroplating workshops—suitable for conveying sulfuric acid-containing ore, alkaline fertilizer, paper pulp, and chemical sludges.

Our acid & alkali resistant conveyor belts comply with China’s industrial standards (HG4-846, HG/T3714) and international standards, including the United States (RMA), Germany (DIN22131), Japan (JIS6369), Australia (AS1333), and South Africa (SABS).

Acid

Product description

Acid

The acid & alkali resistant conveyor belt adopts a "corrosion-resistant cover rubber + anti-corrosion carcass + acid-alkali stable core rubber" structure, resisting chemical erosion:

Acid & Alkali Resistant Cover Rubber:

Synthetic rubber blend (e.g., chloroprene rubber, EPDM) with low chemical reactivity—volume change ≤10% after 72h immersion in 20% H₂SO₄ or 20% NaOH (25℃).

Carcass:

Multi-ply fabric (EP/NN/CC) with anti-corrosion coating (polyester film), preventing acid/alkali from penetrating and damaging the fiber structure.

Core Rubber:

Acid-alkali resistant core rubber with strong adhesion, ensuring layer bonding strength ≥6.5N/mm even after chemical contact.

Sealed Structure:

Full-edge sealing and cover rubber thickening (top ≥4mm) block acid/alkali from entering the belt interior.

Features and Benefits

■ Strong Corrosion Resistance

Resists 5%-30% sulfuric acid, hydrochloric acid, and 5%-25% sodium hydroxide, potassium hydroxide; volume change ≤10% and weight change ≤8% after 72h immersion.

■ High Tensile & Wear Resistance

EP/NN carcass has tensile strength up to 400N/mm, no strength loss after 30 days of acid/alkali exposure; cover rubber wear rate ≤0.12mm/month.

■ Temperature Adaptability

Works normally at -10℃~80℃, no performance degradation in high-temperature acidic environments (e.g., chemical reactor discharge).

■ Environmental Protection

Cover rubber is non-toxic and non-polluting, no heavy metal additives—meeting environmental standards for chemical industry use.

■ Long Service Life

In 20% H₂SO₄ transport scenarios, service life is 2-3x longer than ordinary belts; low replacement frequency reduces downtime.

Belt Selection

Carcass Type: EP/NN/CC (with anti-corrosion coating)

Tensile Strength: 56N/mm (CC56) - 400N/mm (EP/NN 400)

Belt Width: 400mm - 2200mm

Cover Thickness: 3-12mm (top thicker for direct corrosion contact)

Special Options: Combined acid-alkali-heat resistance (≤125℃), acid-alkali-oil resistance.

Why Choose Us

Support small-batch orders with no MOQ:

backed by 20M meters annual capacity, we deliver small batches (e.g., chemical plant trial, acidic ore processing matching) on time.

Offer full customization:

Customize corrosion resistance level (for low/high concentration acid/alkali) and belt structure according to your material’s chemical properties.

Deliver high cost-effectiveness:

National-level laboratory tests verify corrosion resistance; optimized formula reduces costs without compromising performance.

Reference Specification:

Carcass Type	Tensile Strength (N/mm)	Belt Width (mm)	Cover Thickness (mm)	Volume Change (%)	Weight Change (%)	Adhesion Strength (N/mm)
			Top	Bottom	(20% H₂SO₄, 72h)	(20% NaOH, 72h)
CC56/70	56/70	400-2200	3-6	2-4	≤10	≤9
EP/NN 100-200	100-200	400-2200	4-8	3-6	≤9	≤8
EP/NN 250-400	250-400	400-2200	5-12	4-8	≤8	≤7
Acid-Alkali-Heat Type	100-400	400-2200	5-12	4-8	≤8	≤7

This table is for reference only. Please consult JINFLEX business personnel for details