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Located in Hechi, Guangxi, this large-scale construction aggregate production line is engineered with a step-type design and tailored for limestone processing. Commissioned to deliver a flexible hourly output of 800–1000 tons, it produces a full range of construction aggregate specifications with excellent particle shape, perfectly meeting the diverse needs of local construction projects.
Project Description:
This production line adopts a sophisticated two-stage crushing process optimized for limestone. The core workflow involves pre-screening raw materials with a bar feeder, primary crushing via a PCZ1615 Hammer Crusher, and secondary shaping with an impact crusher for off-spec materials. This configuration ensures high throughput, low over-crushing, and superior particle shape for the final aggregates.
Process Configuration:
1. Raw Material Pre-Treatment: Raw limestone is fed from the silo to a bar feeder for preliminary screening.
2. Fines Processing: Screened fine materials are sent to a vibrating screen for classification, then to an impact crusher for fine crushing, followed by a second screening pass.
3. Primary Crushing: Oversized raw materials are uniformly and continuously fed into the PCZ1615 heavy hammer crusher for primary crushing.
4. Secondary Refining & Classification: Crushed materials are directly screened by vibrating screens. Oversized particles undergo secondary processing in the impact crusher, while the remaining mixture is sorted into different aggregate specifications via vibrating screens.
Project Features:
1. Terrain-Adaptive Step-Type Design
Leveraging the on-site terrain, the step-type layout optimizes material flow:
• The bar feeder is positioned above the heavy hammer crusher for gravity-fed efficiency.
• Two vibrating screens are placed directly after primary crushing for immediate classification.
• Qualified finished products are conveyed to stockpiles via belt conveyors, while oversized materials are directed to the impact crusher for secondary processing.
2. Integrated Screening for Impurity Removal
The bar feeder is equipped with built-in screening functionality to separate soil, crushed stone, and other impurities from raw limestone. Complemented by vibrating screen classification, this dual-impurity removal system ensures the final aggregates meet strict purity standards.
3. Versatile & High-Quality Output
The combination of heavy hammer crushing and impact shaping delivers aggregates with:
• Excellent particle shape (minimal flakiness)
• Precise size grading
• Consistent quality across all production specifications
Our sand and gravel aggregate production lines boast extensive and all-round coverage, and we offer a complete range of configurations from individual standalone equipment to full turnkey production lines, including Crushing Equipment, Sand Making Equipment, Screening Equipment, Feeding Equipment, Mining Conveyor and Mobile crusher. We provide customized crushing and processing solutions for a full spectrum of materials including bluestone, limestone, basalt, granite, pebble, coal gangue, calcite, quartz stone, dolomite, iron ore, barite, diabase, tuff and high calcium limestone, as well as targeted processing solutions for kaolin. We also deliver professional crushing solutions for industrial solid wastes such as slag and tailings, and comprehensive treatment solutions for construction & demolition waste. In addition to fixed production line solutions for various materials, we also supply flexible Mobile Crawler Unit Solutions to meet diverse on-site operation needs of sand and gravel aggregate production.
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Main Product:
Mobile Crusher,
Sand Making Equipment,
Screening Equipment ,
Feeding Equipment,
Mining Conveyor,
Crushing Equipment
