Gu Xin’s double‑layer chute color sorter features wear‑resistant, high‑durability tungsten‑steel chutes, paired with high‑definition optics and AI‑driven precision sorting. It delivers exceptional color‑sorting accuracy, low carry‑over rates, and impressive throughput, making it ideal for purifying a wide range of mineral powders.

Keywords：Guxin Double-Layer Mineral Powder Color Sorter

The Guxin double‑layer chute‑type color sorter for mineral powders is specially designed for high‑purity quartz sand, plate‑making sand, calcium sand, glass sand, and other mineral powders ranging from 16 to 150 mesh. It features a double‑layer, highly wear‑resistant chute, equipped with an imported high‑speed CCD camera and an LED optical system. Powered by AI algorithms, it accurately detects color‑difference impurities, achieving a color‑sorting accuracy of ≥99.9%. Its high‑speed air valves offer rapid response, stable construction, and low energy consumption.

I. Product Positioning

The Guxin double‑lane chute‑type powder color sorter is a high‑end, dedicated device for powder sorting, focusing on particle sizes from 16 to 150 mesh. It delivers high‑precision purification of mineral powders, featuring a dual‑lane chute design, large throughput, low carryover, and robust stability. It replaces traditional single‑lane powder sorters and manual sorting, serving the high‑end downstream processing market for non‑metallic minerals, including photovoltaic quartz sand, high‑purity plate‑making sand, ultrafine calcium carbonate, glass sand, natural sand, river sand, colored sand, alumina, and polymer materials. Key highlights: exceptional color‑sorting accuracy, high production capacity, and superior cost‑effectiveness compared with imported equipment.

II. Application Scenarios

● High-purity quartz sand/photovoltaic sand: 16–140 mesh dry material, with yellow skins, black spots, mica, and impurity particles removed, achieving a purity of 99.9% or higher.   
● Board sand / glass sand / calcium sand: Purification of dry powdered materials, with control over whiteness and impurities, tailored for flat glass, ceramic, and engineered wood panel production lines.   
● Ultrafine calcium carbonate/calcareous powder: Dry‑sorting and impurity removal enhance whiteness and fineness stability, making it suitable for use as a filler in plastics, coatings, and papermaking.   
● Potassium feldspar/dolomite/fluorite powder: Dry‑state separation of colored particles, gangue, and iron impurities to enhance concentrate grade.   
● Other dry powder materials: Purification of dry non-metallic mineral materials such as natural colored sand, fused quartz sand, and kaolin powder.   
● Dry separation environmental requirements: Material moisture content ≤ 3%; dust can be collected; ambient temperature range: –20°C to +45°C. Suitable for dry‑process mining lines, powder‑processing plants, and quartz‑sand deep‑processing facilities—no water washing required, zero wastewater, and low energy consumption.

III. Model and Technical Specifications

Product model	KS4-GX768		FLD6-128
Number of channels	768		1536
Production (t)	16–26 mesh	3-6	16–26 mesh	4-10
	26–40 mesh	2.5-5	26–40 mesh	3.5-8
	40–70 mesh	2-4	40–70 mesh	3-6
	70–140 mesh	1-2	70–140 mesh	1-3
Purity rate (%)	≥99.9		≥99.9
Power supply voltage (V/Hz)	220(50HZ)		220(50HZ)
Power (kW)	3.5		5.5
Air supply pressure (MPa)	0.2-0.4		0.2-0.3
Air consumption (L/min)	<3		<3
Machine weight (kg)	1600		2500
External dimensions (Length × Width × Height) (mm)	2480*1800*2300		2690*1820*2590

IV. Core Technologies

● Multispectral Fusion Recognition: RGB color plus infrared (IR) dual-band imaging captures four-dimensional differences in color, brightness, texture, and shape, enabling the detection of subtle color variations—such as yellow‑tinted inclusions in quartz sand with ΔE < 1—as well as black spots, discolored particles, and impurity inclusions.   
● AI Intelligent Algorithms: High-speed processing with DSP and FPGA, featuring a composite sorting mode that combines color, shape, and texture analysis to adapt to diverse mineral characteristics; supports custom templates and one-click switching between material formulations.   
● Double-layer chute feeding: Independent high-speed cameras on the upper and lower layers ensure full‑field, dead‑zone‑free coverage; a sloped chute enables materials to be evenly spread in a single layer, with no overlapping or blockages, achieving an identification accuracy of 99.99% or higher.

V. Core Competitive Advantages

● Double-layer inclined dry separation structure: Upper-layer pre‑dispersion and lower-layer fine classification, with a capacity 1.8 to 2 times that of a single‑layer machine; material flow rate is controllable, breakage rate is below 0.5%, and carryover is minimal.   
● Top-tier dry separation accuracy: Color-sorting accuracy exceeds 99.9%, achieving first-pass sorting compliance and boosting recovery rates by 10% to 30%.   
● Strong adaptability to extreme environments: - Starts reliably at 20°C and operates stably at +45°C; features a dust‑tight sealed design, enabling continuous 24‑hour operation in dusty environments without failure.   
● Ultra-low operational maintenance costs: The slide is made of hard tungsten‑steel alloy, with a service life of ≥3 years (compared to just 6 months for standard materials); its core components are sourced from top‑tier international brands, ensuring an overall machine lifespan of ≥20 years and annual maintenance costs of less than RMB 5,000.   
● Extremely simple operation: Smart touch screen—easy to master after just 30 minutes of training; supports remote diagnostics, one-click calibration, and recipe storage, reducing reliance on manual operation.   
● Unbeatable value for money compared to imports: Priced at half that of comparable imported models, with performance on par with or exceeding theirs; 24-hour Chinese-language after-sales support and on-site response within 48 hours—eliminating the common pain points of imported machines, such as slow service and expensive parts.

VI. The Tangible Value Delivered to Customers

● Quality Upgrade: The finished product achieves a purity of 99.99% or higher, with whiteness improved by 2 to 5 degrees and impurity levels reduced to below 0.1%. This results in a price premium of 10% to 30%; for example, photovoltaic quartz sand upgraded from standard grade to high-purity grade sees a price increase of RMB 200 to 500 per ton.   
● Production capacity doubled: Single-unit capacity: 4–10 tons per hour (40–70 mesh quartz sand).   
● Recycling rate improvement: The recovery rate is 10–30 percentage points higher than that of conventional equipment (10%–30%), enabling an additional 3,000–6,000 tons of high‑quality material to be recovered annually from a 100,000‑ton‑per‑year quartz sand operation, with an annual revenue increase of RMB 6–30 million.   
● Cost reduction and efficiency improvement: Dry separation produces zero wastewater and consumes low energy (6.5 kW), saving 100% of water and 30% of electricity compared with wet separation; it operates automatically, enabling 24-hour continuous production with annual downtime of less than 72 hours.   
● Quick return on investment: A single unit requires an investment of RMB 300,000 to 400,000 and recoups its cost in 2 to 4 months; the entire system has a service life of 20 years, delivering stable long-term returns.

VII. Production Sites of Selected Domestic and International Customers