I. Product Applications

The Guxin color sorter specially designed for gypsum stone is custom‑developed to meet the unique characteristics of this material. It excels in high‑precision impurity removal, broad particle‑size compatibility, dust‑proof and robust construction, and seamless dry‑and‑wet operation. It effectively eliminates contaminants such as yellow clay, black gangue, foreign stones, discolored ore fragments, and weathered material from raw gypsum ore, thereby enhancing the whiteness, purity, and grade of the finished product. The machine is well suited for large‑scale sorting of diverse gypsum feedstocks, including raw ore, crushed material, and aggregates.

II. Scope of Application

Compatible materials: natural gypsum, desulfurization gypsum blocks, gypsum aggregates, and mixed‑size gypsum ores; material particle size: 3 mm to 200 mm across the entire range, with support for simultaneous sorting of both fine and coarse particles; operating mode: dual‑use for dry and wet processing, unaffected by dust levels or moisture content; capacity range: categorized by model—standard models deliver 10–55 t/h, while high‑capacity models can reach up to 100 t/h; sorting performance: sorting accuracy ≥ 99.9%, reject rate ≤ 2%, and finished product whiteness improved by 6–12 degrees.

III. Technical Parameters

Note: The above yields are based on pellets measuring 1–5 cm in size (including up to 5% impurities).

IV. Technical Advantages

1. Image 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 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-venting air valve: Equipped with a professional high-speed air valve, it delivers rapid response, 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. Constant-Temperature 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 can arise from prolonged LED operation; ensures long-lasting durability under stable temperature conditions.  
5. Automatic Feeding System: An advanced material-feeding detection system is employed to ensure uniform material flow.  
6. Stable tracked conveyance: It employs a tracked conveyor system, delivering excellent color‑sorting performance and stable material transport, which effectively increases the carry‑over ratio and sorting purity while significantly reducing material breakage during the color‑sorting process.  
7. 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. Simple Operating System: Touchscreen displays from professional manufacturers, an intuitive human-machine interface, clear and easy-to-read operation menus, and simplified settings enable customers to quickly master the various functions of the color sorter.

V. Core System

1. Feed Conveyor System: It employs a double‑layer tracked design; to address the soft, powdery nature of gypsum, wear‑resistant, non‑slip tracks are used to minimize material chipping and breakage. The feed rate is continuously variable via frequency conversion, allowing flexible adjustment based on material moisture, particle size, and production requirements. Mixed‑size materials can be processed without prior, stringent grading, streamlining upstream operations. The machine’s feed inlet features an anti‑splash design to reduce material loss.  
2. Optical Imaging System: Equipped with a high‑resolution, full‑color CCD dual‑sided inspection camera, it eliminates visual blind spots and can detect subtle contaminants with low color differences, such as pale yellow or light gray particles. A custom‑designed constant‑brightness LED light source delivers uniform, stable illumination that remains unaffected by workshop lighting or minor dust obstructions, ensuring consistent imaging performance over the long term. The inspection chamber is sealed and dust‑proof, with protective lenses fitted to the optical components, making it well suited for the high‑dust conditions typical of gypsum mining operations and extending the service life of its components.  
3. AI Intelligent Sorting Algorithm: Equipped with a dedicated gypsum‑stone training model, it leverages deep learning to extract the distinctive features of various gypsum types and associated impurities, accurately distinguishing between genuine material, surface‑layer material, and waste rock. The system supports customizable parameters and allows one‑click switching among three sorting modes—rough selection, fine selection, and high‑purity sorting—to meet diverse product‑grade requirements. Its robust anti‑interference algorithm ensures reliable performance even in the face of natural color variations in gypsum or slightly weathered material, preventing false rejections and delivering a high yield of qualified products.  
4. Pneumatic Ejection System: High-speed micro air valves with a response time of less than 0.1 ms, offering rapid actuation and controllable blow‑off force, reliably remove both large debris and fine particulates. Optimized air‑path design ensures stable air pressure and smooth, uninterrupted operation, making it suitable for 24‑hour continuous production. The valve assembly is easily disassembled for maintenance, facilitating convenient post‑installation servicing.  
5. Dust Removal and Protection System: The machine features a fully enclosed body and a negative-pressure dust collection system, effectively capturing gypsum dust, improving the workshop’s working environment, and meeting environmental standards. The main body is constructed from thickened steel, while components undergo anti-rust and wear‑resistant treatments to withstand the harsh conditions of mining operations. The electrical system is independently sealed, preventing dust ingress into the circuitry and reducing the likelihood of malfunctions.

VI. Process Plan

1. Roughing process for raw ore: Applicable scenario: Freshly mined gypsum raw ore, heavily contaminated with soil, large rock fragments, and surrounding host rock, where the goal is to perform preliminary impurity removal and enhance the overall quality of the raw material. Process flow: Rough crushing of the raw ore → Simple screening → Feeding into a color sorter → Color‑based impurity removal → Segregated discharge. Process advantages: Eliminates manual sorting, significantly reduces labor costs, and removes large waste rock in advance, thereby lightening the load on subsequent crushing and grinding operations.  
2. Premium finishing process: Applicable scenarios: crushed gypsum aggregates and finished gypsum blocks requiring high whiteness and purity, used in high-end sectors such as building materials, chemicals, and mold manufacturing. Process flow: raw ore crushing → fine screening → drying (if required) → high-precision sorting by color sorter → storage of premium-grade gypsum. Process advantages: thorough removal of minute foreign‑colored particles and surface‑yellowed material, ensuring uniform whiteness and appearance of the final product, thereby enhancing product pricing and market competitiveness.

VII. Core Advantages

1. Strong material adaptability: covers the full particle size range from 3 mm to 200 mm, eliminating the need for multi-stage fine screening and simplifying the production line.  
2. High sorting accuracy: An AI‑plus multispectral optical system enables precise identification of even low‑color‑difference impurities, resulting in minimal yield loss.  
3. Dust‑resistant and easy to maintain: Featuring a fully sealed, dust‑proof design and durable components, it requires only simple daily cleaning, and operators can be trained in a short time to begin work.  
5. High production capacity flexibility: A wide range of models is available, making it suitable for everything from small workshops to large-scale mining operations.  
6. Comprehensive cost reduction is a key advantage: it replaces traditional manual sorting, with sorting efficiency dozens of times higher than human labor, delivering exceptional long-term value for money.

VIII. Reference Effects

The raw ordinary blended gypsum ore has an impurity content of 12%–20%, with uneven whiteness. After sorting, the impurity level is reduced to below 0.5%, and the finished product exhibits uniform, stable whiteness and consistent grade, enabling direct supply to high-end downstream customers.

9. Production Site