Processing limestone (qingstone) into 05 aggregate (0-5mm) at a rate of 100 tons per hour requires a well-designed production line. Limestone is a sedimentary rock, typically classified as a medium-hard material, making it relatively easy to crush compared to harder stones like granite. The “05” specification refers to crushed stone particles ranging from 0mm to 5mm in diameter, a crucial size for concrete mixing and road base applications.
To achieve this output and specification efficiently, the production line generally consists of four main stages: feeding and coarse crushing, intermediate and fine crushing, screening, and optional sand making/washing. Selecting the right combination of equipment is vital for maximizing yield, minimizing wear, and ensuring product quality.
Frequently Asked Questions (FAQs)
Q1: What exactly is “05 aggregate” and why is the 5mm size important? A1: “05 aggregate” is an industry term indicating crushed stone with a particle size range of 0 to 5 millimeters. This size is critical because it sits at the boundary between coarse and fine aggregates. Particles larger than 4.75mm are generally classified as coarse aggregate (gravel), while those smaller are fine aggregate (sand). The 05 specification is highly valued in concrete production as it helps reduce shrinkage and increase the overall strength of the final product.
Q2: Can I use a single machine to crush limestone directly into 05 aggregate? A2: While it is technically possible to use a single-stage crusher with a very fine discharge setting, it is generally not recommended for a 100 TPH line. Single-stage crushing can lead to excessive “over-crushing,” creating too much dust and fines, which reduces yield and can negatively impact the quality of the final aggregate. A staged approach (coarse + fine crushing) offers better control over the particle size distribution and shape.
Benefits of a Professional Production Line
Investing in proper 100 TPH bluestone processing equipment boosts operational efficiency by reducing energy costs and maintenance, enhances gravel quality for superior construction applications, and scales production to meet market demands, potentially increasing profitability through consistent high-volume output.
Step 1: Prepare the Raw Bluestone Material Source and transport bluestone to the site. Inspect for contaminants and use a loader to clear oversized debris. Limit initial feed to under 600mm for smooth crushing.
Step 2: Primary Crushing with Jaw Crusher Load material into a PE-600×900 jaw crusher. Set discharge gap to 75-200mm for coarse reduction, supporting 100 TPH throughput.
2015 New Stone Jaw Rock crusher PE-600*900
Step 3: Secondary Crushing with Cone Crusher Convey output to a PYB-1200 cone crusher. Adjust closed side setting to 20-50mm for intermediate sizing at efficient speeds.
Secondary Crushing Broken Ore Machine Cone Crusher
Step 4: Tertiary Crushing with Impact Crusher Feed to a PF-1315 impact crusher. Tune rotor speed and plates for 0-5mm fines with cubical shapes.
PF1315 Stone Impact Crusher for Bentonite Crushing .
Step 5: Screening and Final Separation Route through a 3YK-1854 vibrating screen. Choose mesh for 0-5mm isolation and return oversize to crushers. Gather finished gravel.
3YK1854 Vibrating Screen – Efficient Mining Solutions
In a Chinese quarry using this 100 TPH bluestone crusher setup, output stabilized at target levels, cutting energy use by 18% and improving aggregate uniformity. A U.S. firm reported 22% higher acceptance rates in concrete mixes due to consistent 0-5mm gravel quality from optimized equipment. An Indian operation saw maintenance expenses fall by 28% over 18 months, attributing longevity to matched machinery in their gravel production line.
