Specialized intelligent sorting equipment for refractory raw materials, addressing the refractory industry’s critical needs for “high purity, low impurities, and consistent quality.” Custom-designed for refractory feedstocks such as chromite corundum, fused quartz, high‑alumina bauxite, and magnesite, it replaces manual sorting and conventional screening equipment, serving as a core standard solution for advancing the refractory sector toward higher‑end, smarter production.

Keywords：Gu Xin Color Sorter for Refractory Materials

I. Product Positioning
Specialized intelligent sorting equipment for refractory raw materials, addressing the industry’s critical needs for “high purity, low impurities, and consistent quality.” Custom-designed for refractory feedstocks such as chromite corundum, fused quartz, high‑alumina bauxite, and magnesite, it replaces manual labor and conventional sorting machinery, serving as a core standard solution for advancing the refractory sector toward higher‑end, smarter production.

II. Core Application Scenarios
Refractory raw material mine/processing plant: Rough and fine concentration of the raw ore to remove gangue, discolored minerals, and harmful impurities (such as iron and black spots).
Refractory product production line: Raw materials such as high-purity refractory bricks, castables, saggers, and crucibles undergo purification to ensure the finished products exhibit superior high-temperature resistance and corrosion‑resistance.
Specialty Refractory Materials Plant: Fine sorting of high-end refractory raw materials such as calcined corundum, fused quartz, chrome‑alumina, and alumina.
Dry–wet mixed-material processing: Compatible with wet materials from mines and with the blending and sorting of dried materials after drying, ensuring stable operation across all operating conditions.

III. Sortable Ore Types (Core Categories of Refractory Materials)
Corundum varieties: fused corundum, chrome corundum, white corundum, brown corundum, and high-alumina corundum.
Quartz-based materials: fused quartz, high-purity quartz sand.
Bauxite/High-Alumina Materials: High-alumina bauxite, calcined bauxite, and bauxite ore.
Magnesium-based refractory raw materials: magnesite, dead-burned magnesia, and light-burned magnesia.
Siliceous/calcic refractory raw materials: silica, dolomite, calcite, and kaolin (refractory grade).
Others: nearly one hundred types of non-metallic and metallic refractory raw materials, including zircon sand, silicon carbide, and fireclay.

IV. Particle Size Sorting Range (Full Specification Coverage)
Fine powder/sand: 16–140 mesh (approximately 0.1–1 mm).
Small and medium particles: 1–50 mm (0.1–5 cm).
Large pieces: 50–150 mm (5–15 cm).
Mixed sorting: Supports multi‑stage mixed sorting for particle sizes of 0.1–0.5 cm, 0.5–3 cm, and 3–5 cm, eliminating the need for size‑classification pre‑processing.

V. Sorting and Identification Dimension (AI + Multispectral High Precision)
Color dimension: A full-color CCD captures micron-level color differences, distinguishing white, yellow, gray, and black impurity particles.
Texture Dimension: AI deep learning detects surface cracks, spots, and impurity textures.
Spectral dimension: Multispectral imaging penetrates the surface to detect internal inclusions, such as iron and carbon black spots.
Shape dimension: Distinguishes non-conforming particles that are irregularly shaped, fragmented, or agglomerated.

VI. Core Competitive Advantages
Customized for refractory applications: Addressing the stringent high-purity requirements of refractory raw materials, a multi-spectral + color-sorting + AI system precisely removes trace harmful impurities.
Ultra-wide sorting range: covers the full particle size spectrum from 5 to 150 mm, suitable for both dry and wet applications, and adaptable to diverse specifications of refractory raw materials.
Ultra-high sorting accuracy: 5,400-pixel high-speed full-color CCD plus multispectral imaging, with a sorting accuracy of ≥99.9% and a reject rate of ≤1.5%.
Double-layer track free-fall structure: high precision, large throughput, and low carry‑over ratio, delivering 30% higher efficiency than conventional chute‑type elevators.
International first‑tier core components: the entire machine has a 20‑year service life, is dust‑resistant and immune to interference, and delivers stable performance under harsh operating conditions.
Easy to operate and maintain: 30-minute training for quick onboarding, self-cleaning system, and low long-term maintenance costs.

VII. The Tangible Value Delivered to Customers
Quality Upgrade: Impurity content has been reduced from 5–10% to ≤1%, significantly enhancing the high-temperature resistance and corrosion resistance of refractory products, thereby strengthening competitiveness in the premium market segment.
Cost reduction and efficiency gains: Replaces manual labor (reducing labor costs by 90%), boosts productivity by 10–30 times, processes 5–50 tons per hour, achieves a carry‑over rate of ≤2%, and improves raw material utilization by 15–20%.
Stable production: 24-hour continuous operation, unaffected by dust or humidity, with consistent batch quality and reduced rework and scrap.
Long-term returns: 20-year ultra-long lifespan, low maintenance costs, and a payback period of 3–6 months.

VIII. Core Technical Parameters (Specialized for Refractory Materials)
Sorting accuracy: ≥99.9%.
Processing capacity: 5–50 tons/hour (adjustable based on particle size and material).
Screening particle size: 16 mesh–150 mm (0.1 mm–15 cm).
Recognition system: 5,400-pixel high-speed full-color CCD + multispectral imaging + AI deep-learning algorithm.
Valve response: Millisecond-level (≤0.1 ms).
Structural configuration: double-layer tracked free-fall type.
Applicable operating conditions: suitable for both dry and wet applications, and compatible with high-dust environments.
Power supply/power: 380 V/50 Hz, 1.5–4.5 kW.
Overall dimensions: 2800 × 1500 × 1800 mm (standard model).
Key components: imported CCD, spray valve, motor, and sensors.

9. Color Sorting Site (Real-Scene Photography Description)
Raw material feeding: Refractory raw ores (such as chrome corundum or fused quartz) are initially graded by a crusher and a vibrating screen, then conveyed via belt to the color‑sorting machine’s hopper. Both dry and wet materials can be directly mixed before feeding.
Sorting process: Materials are evenly spread across a double-layer conveyor belt and fall freely into the sorting chamber, where a high-speed CCD‑plus‑multispectral scanner performs real-time analysis of color, texture, and spectral data. A millisecond‑response jet valve then precisely removes impurities and nonconforming particles.
Discharge end: Divided into the “High-Quality Material Outlet” (high-purity refractory raw material, purity ≥97%), the “Secondary Material Outlet” (suitable for re‑sorting), and the “Waste Material Outlet” (containing impurities or waste ore). The finished product is conveyed directly to the storage bin or packaging line.
Site conditions: The equipment is sealed and dust‑proof, designed to withstand the high‑dust, humid environments typical of mines and processing plants. The control panel features a visual display that provides real-time readings of sorting accuracy, throughput, and impurity levels, allowing operation with just one operator on duty.