Product Introduction

Features and Applications: The cover rubber of the acid- and alkali-resistant conveyor belt is made by blending rubber with plastics and incorporating inert materials that exhibit excellent acid- and alkali-resistance, offering superior performance compared to neoprene-based acid- and alkali-resistant conveyor belts. The carcass material uses EP canvas, which provides more reliable acid- and alkali-resistant properties than cotton-canvas core belts. This conveyor belt is suitable for conveying materials or operating in environments that come into contact with acids and alkalis, such as phosphate fertilizer production and seawater evaporation for salt production.

Standard: HG/T 3782-2015 “Acid- and Alkali-Resistant Conveyor Belt”

Main Performance and Specifications

Physical Properties of the Cover Layer

Project		Indicator Permissible deviation range
Hardness	Before Aging (IRHD)	60 -5 +10
	Difference between post-aging and pre-aging (IRHD)	20
	Maximum value after aging (IRHD)	85
Tensile strength	Minimum value before aging /MPa	15
	Rate of change after aging / %	-25
	Minimum value after aging / MPa	12
Elongation at break	Minimum value before aging/%	400
	Rate of change after aging / %	-50
	Minimum value after aging / %	200
Wear and tear	Before aging mm 3 ≤	200

Acid and Alkali Resistance of the Coating Layer

Category	Soaking solution	Concentration	Soaking conditions Temperature × Time	Rate of performance change before and after soaking
				Volume expansion rate	Enhanced rate of change
A	Hydrochloric acid	18%	50℃ × 96 hours	Below +10%	Within 10%
A2	Sulfuric acid	50%	50℃ × 96 hours	Below +10%	Within 10%
A3	Sodium hydroxide	48%	50℃ × 96 hours	Below +10%	Within 10%