Here is the professional English version of the technical proposal for a 300 TPH (Tons Per Hour) ore crushing production line, optimized for international industrial standards and SEO.
Technical Proposal for 300 TPH Mineral Crushing Production Line
- I. Production Line Design Philosophy: Layered Configuration Logic
The core of a 300 TPH (approx. 150-200 m^3/h) production line lies in scientific configuration based on material hardness and final product requirements.
Configuration A: High-Hardness Ore (Granite, Basalt, River Pebble)
Characteristics: High silica content, high abrasiveness. Focus: Wear reduction and multi-stage crushing.
- Primary Crushing: Jaw Crusher (PE-900×1200) or European Type Jaw Crusher.
- Secondary/Tertiary Crushing: Single-cylinder or Multi-cylinder Hydraulic Cone Crusher (HST250 or HP300).
- Shaping/Sand Making (Optional): VSI Series Vertical Shaft Impact Crusher.
- Auxiliaries: Vibrating Feeder + Circular Vibrating Screen + Belt Conveyors (Sized and extended based on site topography and granularity requirements).
Configuration B: Medium-Low Hardness Ore (Limestone, Bluestone, Coal Gangue)
Characteristics: Easy to crush. Focus: Process simplification and cost-efficiency. - Primary Crushing: Jaw Crusher or European Type Jaw Crusher.
- Secondary/Fine Crushing: Impact Crusher (CI1315 or PF1315) for superior cubic particle shape.
- Fine Grinding: For fine powder requirements, use Hydraulic Roller Crushers (Multiple units in parallel depending on capacity).
- Auxiliaries: Vibrating Feeder + Triple-deck Plane Vibrating Screen + Belt Conveyors.
II. Core Equipment Specifications (Based on 300 TPH)
Equipment Recommended Model Max Feed Size Function Description
Vibrating Feeder ZSW-490×110 \le 700mm Uniform feeding with grizzly bars for pre-screening.
Jaw Crusher PE-900×1200 \le 750mm Primary heavy-duty crushing with robust structure.
Hydraulic Cone Crusher HST-250 (F2) \le 215mm Secondary crushing for hard rock; automated hydraulic adjustment.
Impact Crusher CI-1315 \le 350mm Secondary crushing for soft rock; high yield and excellent particle shape.
Vibrating Screen 2YZS-2460 Per mesh size Multi-stage grading (2-4 layers) for product sizing.
III. Integrated Technical Solutions- Automation & Control System (DCS/PLC)
- Centralized Interlock Control: Equipped with an automated control cabinet for one-touch start/stop and real-time current monitoring. CCTV integration allows for remote observation of equipment performance.
- Feed-back Loop: Linkage between crusher load and feeder frequency to prevent clogging or idling, ensuring maximum throughput.
- Environmental Protection (Green Mine Standards)
- Dust Suppression: Pulse bag-type dust collectors at crushing and discharge points.
- Encapsulation: Enclosed belt conveyor corridors with ventilation and suction systems.
- High-Pressure Mist Spray: Specialized nozzles at feeding and dropping points. Note: Mist systems are positioned away from bearings and rotating parts to prevent oil emulsification and lubrication failure.
- Infrastructure Construction
- Reinforced Concrete Foundation: The most stable option to minimize resonance-induced displacement and equipment wear.
- Steel Skid-mounted Foundation: Offers rapid deployment and ease of relocation for modular project sites.
IV. Execution Standards (Product Quality & Safety)
All equipment and construction comply with the following National Standards (GB): - JB/T 1388: Technical conditions for Jaw Crushers.
- GB/T 25706: Energy efficiency limits and grades for crushing equipment.
- GB 18452: Safety requirements for crushing equipment.
- GB 16248: Standards for dust concentration in workplaces.
- GB 12348: Emission standards for industrial enterprise noise.
V. Operation & Maintenance (O&M) Protocol
- Commissioning Phase
- Alignment: Levelness deviation of crushers and screens must be within 0.2mm/m.
- No-load Testing: 4-8 hours of continuous operation. Bearing temperatures must not exceed 60°C, with vibration levels maintained between 3-6μm.
- Operational Norms
- Zero-Load Start: Equipment must reach full speed before feeding. Ensure the crushing chamber is empty before shutdown.
- Metal Detection: Strong magnetic separators must be operational to prevent tramp iron from damaging the Cone or Impact Crusher rotors.
- Maintenance Schedule
- Lubrication: Grease Jaw Crusher bearings every 8 hours; monitor oil pressure in Cone Crusher thin-oil stations regularly.
- Wear Analysis: Maintain logs for Mantle, Concave, and Blow Bars. Components must be replaced when 2/3 worn to prevent catastrophic failure of the main frame.
Expert Recommendation:
For ores with a Mohs Hardness > 7, it is highly recommended to install a VSI Shaper after the secondary crushing stage. While increasing initial CAPEX, it significantly enhances the Cubic Particle Rate, allowing for a premium price on the final aggregate.