I. Product Applications

Gu Xin’s specialized separator for aluminum ore and bauxite can process dry materials with particle sizes ranging from 0.1 to 8 cm, and wet materials from 0.5 to 8 cm. A key feature of the product is its dual‑layer conveyor‑belt, free‑fall feeding system. Gu Xin Patent ), supporting material‑mixing color sorting with high sorting accuracy, large throughput, minimal carry‑over of good material, a high yield of qualified product, robust stability, low overall power consumption, and excellent cost‑effectiveness—offering distinct advantages over comparable equipment. The Guxin aluminum‑ore‑specific color sorter integrates AI and multispectral technology to precisely distinguish between high‑quality ore and waste rock. It enables dry, environmentally friendly sorting, replaces manual labor, enhances ore grade, reduces costs, and reactivates tailings, making it a core solution for aluminum‑mining companies seeking to improve quality and efficiency while achieving rapid return on investment.  
1. Bauxite (alumina ore) purification: Separation of high-alumina concentrate, low-alumina gangue/waste rock, and high-iron/high-silica impurities from the raw ore, thereby increasing the alumina-to-silica ratio (A/S) and reducing iron content.  
2. Particle size range: Compatible with particles ranging from 0.1 to 8 cm; fine aluminum ore particles can be separated down to 16–120 mesh.  
3. Sorted products:  
Concentrate: high aluminum, low iron and low silicon, with stable color (white/light gray), supplied for alumina and refractory materials.  
Secondary ore (associated mineral): Aluminum occurs in association with gangue, with a moderate aluminum content; it may be downgraded for use or subjected to further beneficiation.  
Waste: Non-recyclable waste rock and high‑iron/high‑silica tailings, with impurities fully removable.  
Refractory-grade bauxite: reduces iron content to ≤3%, increases Al₂O₃ to 57%+, and ensures consistent refractory brick quality.  
Alumina/electrolytic aluminum feedstock: Increasing the alumina-to-silica ratio reduces caustic consumption by approximately 15% and energy consumption by 8%–10%, while cutting red mud emissions by 20%–30%.  
Tailings re‑beneficiation: Recovers 30%–50% of recoverable aluminum from low‑grade tailings, thereby enhancing resource utilization.

II. Application Scenarios

Pre‑sorting after coarse crushing in mines (enabling early rejection): Mining → Crushing (1–5 cm) → Color sorting, which removes 30%–70% of waste rock in advance, thereby reducing transportation and grinding costs.  
Alumina plant feed pretreatment: prior to grinding, iron is removed, silica content is reduced, the alumina-to-silica ratio is increased, and downstream process parameters are stabilized.  
Raw Materials Section of the Refractory Materials Plant: Removes iron and impurities from bauxite before and after calcination, ensuring the purity and stability of the clinker.  
Reutilization of tailings ponds and waste rock dumps: re‑processing old tailings to unlock low‑grade resources and extend mine life.  
Port/Trade Grading and Sorting: Grade by quality to enhance the premium for high-grade ore.

III. Technical Parameters

Note: The above production figures are based on 1–5 cm bauxite (with 5% impurities).

IV. 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 LED operation; 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 the carry‑over ratio and sorting purity while also significantly reducing material breakage during the color‑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.

V. Operating Environment

1. Ambient temperature  
Standard: 0–35°C (usable year-round)  
Wide-temperature range: -20°C to +45°C (suitable for northern winters, outdoor use in the south, and mining areas in Xinjiang and Inner Mongolia)  
2. Dust/Humidity  
Adaptability: High dust levels in mining environments, ≤85% RH (no water washing required; dry separation)  
Protection: Fully sealed enclosure, positive-pressure dust protection, and automatic lens purging—resistant to dust clogging the lens.  
3. Installation Site  
Dimensions: Length 4.907 m × Width 1.82–2.42 m × Height 2.727 m.  
Foundation: Concrete floor; no pre‑embedding required; installation completed in 2–3 days.  
Power supply: 380 V / 50 Hz, power rating 6.5–7.5 kW.  
4. Feeding Conditions  
Feeding: Uniform vibratory feeding, preventing material blockage and machine jamming.

VI. Core Advantages

1. Enhance your value and earn more money directly.  
2. Dry separation is environmentally friendly—no water is used, and no tailings are produced.  
The entire process employs dry separation, with zero water consumption, zero wastewater discharge, and zero tailings disposal. It is the preferred solution in arid regions—such as Xinjiang, Inner Mongolia, and Africa—addressing the critical challenge of water scarcity.  
3. Replaces manual labor, saving manpower, hassle, and costs.  
One color sorter replaces 30 skilled workers and operates continuously around the clock. Manual sorting is inefficient—producing only 0.5–1 ton per worker per day—prone to significant errors, and costly at 300–500 yuan per ton. In contrast, a color sorter can process 10–45 tons per hour at a cost of 5–10 yuan per ton, with a payback period of 3–6 months.  
4. High precision, low carry-over rate, and no loss of good material.  
Color-sorting accuracy: ≥99.5% (up to 99.9% for the high-end AI model)  
Recovery rate (good material mixed with waste): ≤3–5% (manual recovery ≥15%)  
Micro‑impurity detection: at the 0.1 mm level, even white and yellow spots invisible to the naked eye can be removed.  
5. High processing capacity, suitable for large-scale as well as small and medium-sized mining enterprises of varying sizes.  
It can operate continuously 24 hours a day, with stable performance, high reliability, and a low failure rate.  
6. AI intelligence, self-learning, and easy to operate  
Touchscreen operation, Chinese-language interface, one-touch start, and automatic operation.  
AI Self-Learning: Switch mineral types and colors, train with a single click, and get it done in 10 minutes.  
Remote Monitoring: View production output, accuracy, and fault status via a mobile app, with remote debugging capabilities.  
7. Wear-resistant and durable, specially designed for mining applications.  
Key components: high-wear-resistant alloy chute, stainless steel nozzle, dust-proof lens  
It has few wear parts, requires simple maintenance at low cost, and needs only annual servicing.  
8. Comprehensive resource utilization—extracting every last bit of value.  
Capable of processing raw ore, coarse‑crushed ore, tailings, and waste rock.  
Increase the overall recovery rate and turn waste into valuable resources.

VII. Color Sorting Case Studies

Raw material before color sorting

Finished product after color sorting

Waste after color sorting

VIII. Application Site: