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In the mining and cement industries, belt conveyors face extremely demanding operating conditions: highly abrasive materials (ore, limestone, clinker, coal, gypsum, etc.), impact from large materials, high dust levels, wet/muddy environments, continuous high-intensity operation, and long-distance, high-volume conveying. These factors significantly accelerate the wear and failure of wear parts. The following are the most important and frequently replaced wear parts for belt conveyors in this industry:

1.Conveyor Belts:

Why They Are Most Susceptible: Carrying tough materials like rocks and clinker, they are subject to being smashed, rubbed, scratched, and torn.

Key Point: Wear and tear of the working surface rubber layer, torn edges, and damaged joints (especially below the drop point) are common. Belts that are exceptionally thick, wear-resistant, and tear-resistant are essential.

2.Idler Rollers:

Why They Are Most Susceptible: They are numerous, carry heavy loads daily, and are subject to the intrusion of dust, mud, and water. They are also subject to being hit by large rocks at the drop point.

Key Point: Bearing seizure (dust is the culprit!) is the most common fault, causing idlers to stop rotating. Rollers can also be deformed or worn through due to impact. Buffer idlers below the drop point are the most susceptible to wear.

3.Pulley Lagging:

Why it's susceptible to wear: The drive pulley exerts significant force on the belt, causing its surface to wear; the tail pulley is also subject to wear and damage.

Key Point: The rubber lagging of the drive pulley (especially rubber or ceramic lagging) wears and peels off the fastest. Ceramic lagging is the mainstream choice for this application because it is extremely wear-resistant and non-slip.

4.Cleaner Scraper:

Why it's susceptible to wear: Constantly scraping away wet mud, dust, and small particles stuck to the belt like an eraser causes rapid wear.

Key Point: Polyurethane or alloy rubber scrapers will become shorter, blunt, or even break as they scrape. Multiple stages (primary, secondary, and return) are essential, and the scraper blades must be checked and replaced regularly.

5.Chute Seals & Wear-Resistant Liners/Impact Beds:

Why They're Susceptible: The drop zone is like a battlefield, with material pounding and hurling violently, and dust must be prevented from flying everywhere.

Key Points:

Sealing Skirt (Rubber): Quickly wears through and tears, allowing dust to leak out.

Wear-Resistant Liners/Impact Strips: These are subject to direct impact and abrasion. Ultra-high molecular weight plastic (UHMWPE) or ceramic liners are most commonly used, but they can also develop deep grooves or deformation.

Impact Beds (Composed of Multiple Impact Strips): They replace impact rollers to absorb impact, and surface wear of the impact strips is the primary concern.

Simply put, these five categories are the most troublesome and require the most frequent replacement:

The belt itself (wear and tear)

Idler rollers (bearing seizure, roller failure)

The "rubber shoe" of the drive roller (worn and bald)

The "eraser" scraper blade (worn short)

The "protective armor" at the drop point (worn sealing skirt, liner, and buffer strip)

Maintenance is key in three ways:

Be willing to use high-quality materials: In the above areas, ceramic, ultra-wear-resistant plastic, and top-grade rubber, while more expensive, are more durable and more cost-effective overall.

Key areas to monitor: Frequently inspect the drop point, drive roller, return section, and all seals (especially the scraper blade and roller rotation).

Adequate spare parts: Consumables such as rollers, scraper blades, seals, and buffer strips must be stocked in the warehouse so they can be replaced immediately if they break.

Remember these five core items (belts, rollers, roller rubber, scrapers, and material falling protection) and three maintenance tips (use good materials, check frequently, and prepare inventory), and you will be able to grasp the main part of mine cement belt conveyor maintenance!