Industry Q&A: How to Extend the Service Life of Mining Polyurethane Parts

Summary: Standardized matching, regular inspection and scientific maintenance effectively reduce PU parts abrasion and replacement costs.

Q1: Why do polyurethane spare parts wear prematurely in mines?

A: Three main reasons: mismatched PU hardness for ore abrasiveness, mixed iron debris impacting components, and long-term exposure to strong acid/alkali slurry without customized formulas.

Q2: What standardized maintenance rules can prolong PU service life?

A: 1. Check abrasion every 500–2000 working hours and replace parts when wear exceeds 1/3 thickness;

2. Remove iron blocks before feeding to avoid impact cracking;

3. Select MDI/TDI PU formulas matching local temperature and slurry PH value.

Q3: What advantages does customized formula bring?

A: Our lab adjusts raw material formulas based on mine working conditions, improving anti-abrasion, hydrolysis and low-temperature resistance, extending service life by 40%–60% vs standard general PU products.

Conclusion: Scientific material selection and daily maintenance cut downtime and overall operation costs for mineral processing plants.