Mobile vs. Stationary — Making the Right Choice
One of the most important decisions in mine and quarry development is whether to use mobile crushing equipment or a fixed (stationary) plant. The choice affects your capital expenditure, operating costs, production flexibility and the viable life of the project. This guide provides a framework for evaluating both options.
Understanding Mobile Crushing Plants
Mobile crushing plants consist of integrated crushing, screening and conveying equipment mounted on tracked or rubber-tyred chassis. They can be moved between locations within a site or transported between sites using low-bed trailers. Common configurations include:
- Wheel-mounted (rubber-tyred): Towed by prime mover, suitable for surface mines with good road access
- Track-mounted: Self-propelled, suitable for rough terrain,拍石场 and demolition sites
- Semi-mobile: Fixed foundation but designed for disassembly and reassembly
Understanding Stationary Plants
Stationary plants are fixed installations with dedicated foundations for each piece of equipment. They are designed for long-term operations (typically 10+ years) at a single location. Components include heavy structural steel, concrete foundations, fixed belt conveyors and complete electrical systems.
Capital Cost Comparison
Mobile Plants:
- Lower civil works cost — no concrete foundations required
- Integrated design reduces engineering and procurement time
- Typical mobile jaw-cone-screen configuration: USD 800,000-2,500,000 depending on capacity
- Transport costs to site: USD 30,000-100,000 (self-propelled or heavy haul)
Stationary Plants:
- Higher civil works cost — concrete foundations, retaining walls, access platforms
- Individual equipment procurement allows customization and competitive pricing
- Typical 500 t/h stationary aggregate plant: USD 3-8 million depending on complexity
- Long-term reliability and easier maintenance access offset higher initial cost
Operating Cost Comparison
Mobile Plants:
- Higher fuel consumption per ton due to engine-driven crushing units
- Track-mounted units require regular undercarriage maintenance
- Operator convenience features may be premium options
- Generally 15-25% higher operating cost per ton for equivalent throughput
Stationary Plants:
- Electric drive (when grid power available) significantly reduces energy cost
- Fixed conveyors have lower operating cost than mobile hauling
- Planned maintenance is easier with fixed access and tooling
- Long-term operating cost advantage of 20-30% for long-term projects
Flexibility and Relocation
Mobile Plants Excel When:
- Project duration is less than 5-8 years at any single location
- Multiple faces or pit locations need to be served sequentially
- Contract crushing or mining with anticipated relocation
- Quick deployment is required (mobile plants can be operational in days vs. months)
- Government approvals make permanent structures impractical
Stationary Plants Excel When:
- Long-term reserve development (10+ years at one location)
- Maximum throughput and efficiency are the top priority
- Grid power is available at competitive rates
- Product specifications require precise control and consistent quality
- Space is available for proper plant layout and future expansion
Production Capacity Considerations
Stationary plants generally achieve 10-30% higher throughput than mobile equipment of equivalent rated capacity due to:
- Larger crushers and screens designed for continuous heavy-duty operation
- More efficient conveyor systems with wider belts and higher speeds
- Better kinematics — larger feed openings, steeper discharge angles
- No transport constraints on equipment size
For production rates above 1000 t/h, stationary plants are typically the only viable option without multiple mobile units operating in parallel.
WSHT Track-Mounted Mobile Crushing Plant — Maximum Flexibility
Decision Framework
The mobile vs. stationary decision should consider:
- Project Duration: Short-term (<5 years) favors mobile; long-term (>10 years) favors stationary
- Reserve Geometry: Multiple working faces or deep pits favor mobile
- Power Availability: Affordable grid power favors stationary electric drives
- Budget Constraints: Limited capital may favor mobile despite higher operating costs
- Product Quality: Stringent spec requirements favor stationary precision
WSHT supplies both mobile and stationary crushing solutions with full engineering support. Our team can help you model the total cost of ownership for your specific project scenario to make the optimal choice.
