The Guxin Aggregate‑Specific Color Sorter is a dual‑belt, AI‑powered multispectral sorting solution custom‑designed for construction aggregates such as sand, gravel, and crushed stone. It excels in dry‑and‑wet operation, handles a wide particle size range, delivers high precision, and achieves high throughput.

I. Scope of Application

● Materials: quartzite, granite, basalt, pebbles, limestone, tailings, and various other aggregates.  
● Particle size: 0.1–8 cm, expandable to large boulders up to 20 cm.  
● Status: Suitable for both dry and wet materials; no drying required.  
● Impurities: discolored particles, yellow skin, black skin, interlayers, clay lumps, metal fragments, mica, and others.

II. Technical Parameters

Note: The above yields are based on a particle size of 1–5 cm (including 5% impurities).

III. Technical Advantages

1. Image and Algorithm Processing System  
Cutting-edge DSP and FPGA processing technologies, combined with color‑ and spatial‑based multi‑mode complex algorithms, deliver “color‑plus‑shape” sorting capabilities tailored to diverse materials. With freely configurable modes, you can select from tens of thousands of material types.  
2. Camera Image Acquisition System  
Imported high-precision camera lenses ensure clear, accurate imaging; an imported high‑precision 5400‑pixel high‑speed linear full‑color smart CCD is employed for high‑definition recognition and rapid sorting.  
3. Self‑priming nozzle and valve actuation mode  
Equipped with a professional high-speed air valve, it delivers rapid actuation, low power consumption, and extended service life; reduces air consumption, achieves faster response, more precise impact, lower carry‑over ratio, and higher throughput; with a service life exceeding 10 billion cycles.  
4. Light Source System  
LED optical design system, with multiple light source options to accommodate various materials; addresses issues such as high temperature, significant power loss, and shortened lifespan that arise from prolonged use of LED sources; ensures long-lasting durability under constant-temperature conditions.  
5. Feeding System  
An advanced material-feeding detection system is employed to ensure uniform material flow.  
6. Crawler Conveyor  
It employs a tracked conveyor system, delivering excellent color‑sorting performance and stable material transport, which effectively enhances both the carry‑over ratio and the purity rate while significantly reducing material breakage during the sorting process.  
7. Flexible mode with a wide range of applications  
Corresponding operating modes have been designed for different materials, enabling a single machine to perform color sorting on various types of materials.  
8. Operating System – Simple and Easy to Use  
Touchscreen displays from professional manufacturers, an intuitive human-machine interface, a clear and easy-to-read operation menu, and simplified settings enable customers to quickly master the various functions of the color sorter.

IV. Separation Principle

● Hardware: Double-layer tracked conveyor system ensures materials are laid out in a single, even layer without mutual obstruction, enabling inspection with no blind spots.  
● Identification: AI‑powered multispectral imaging and high‑speed cameras capture each item individually, detecting differences in color, texture, brightness, and shape; the AI autonomously learns impurity characteristics, achieving 99.9% identification accuracy.  
● Operation: High-frequency solenoid‑actuated air gun for precise removal of contaminants, with a carry‑over ratio of ≤2% (defective:good).

V. Process Flow

● Raw material pretreatment: crushing → water washing (optional) → grading (separation by particle size).  
● Uniform feeding: hopper → vibratory feeder → double‑layer conveyor belt; the material enters the inspection zone in a single, evenly spaced layer at a constant speed.  
● AI-powered inspection: multispectral camera + background panel, performing all‑dimensional scanning of each aggregate particle.  
● Precision sorting: AI identifies impurities → a solenoid valve instantly ejects air → impurities are directed into the reject bin; qualified products freely fall into the finished‑goods storage bin.  
● Secondary sorting (optional): Recirculation of material from the impurity bin for a second round of color sorting, enhancing recovery rates and reducing losses.

VI. Color Sorting Case Studies

VII. Key Configurations

● Structure: Double-layer independent sorting system, doubling throughput.  
● Material: Special wear-resistant tracks, compatible with high-hardness aggregates, ensuring a long service life.  
● Control System: Industrial-grade PLC with touch screen, featuring one-touch start-up, parameter memory, and remote monitoring.  
● Capacity: 10–50 t/h (depending on particle size and impurity content), with efficiency more than three times that of conventional equipment.

VIII. Sorting Performance

● Product purity: ≥99.9%, meeting the standards for high-end construction, highways, and concrete aggregates.  
● Cost reduction: Replaces 20–50 manual workers, reducing human error and safety risks.  
● Enhanced Efficiency: Automated continuous operation, low energy consumption per ton, high recovery rate, and rapid return on investment.

9. Application Scenarios

● Construction aggregates: Remove yellow/black impurities and clay lumps to enhance concrete strength and appearance.  
● High-speed rail/highway aggregates: Strictly control impurity content to meet the standards of high-grade engineering projects.  
● Quartz/granite aggregates: Sorted into pure white/pure-colored particles to enhance product value.  
●Tailings recovery: Purify valuable particles, turning waste into a resource.

X. On-site for some users