I. Product Applications

(1) By Salt Type and Raw Material Form  
1. Rock salt (well salt/mineral salt)  
● Rough concentration of raw ore (10–50 mm): Removes gangue, mud clumps, and black/brown impurities, thereby increasing the feed grade to the mill and reducing subsequent energy consumption and equipment wear.  
● Post‑crushing grading (1–10 mm): Removes discolored crystals, black spots, yellow skin, and under‑cooked ore, ensuring the basic purity of industrial salt and refined salt.  
● Fine salt/Refined salt (8–120 mesh): Highly precise removal of minute discolored particles, dust, and non-salt minerals, meeting food-grade and high-purity industrial salt standards.  
2. Lake salt/sea salt (sun-dried salt, beach-sun-dried salt)  
● Coarse salt (5–20 mm): Separates shells, sand, algae, and discolored crystals, reducing the labor intensity of manual sorting.  
● Post‑washing refining (1–5 mm): Removes residual impurities and discolored crystals, enhancing whiteness and uniformity; suitable for edible salt and premium household‑use salt.  
● Fine salt/Snowflake salt (<1 mm): Precisely sorted, highly reflective crystals are carefully selected to remove trace impurities, ensuring the premium appearance and safety of the product.  
3. Special Types of Salt  
● Refined edible salt (iodized salt, low-sodium salt): Strictly controls black spots, yellow discoloration, and foreign matter; complies with the GB 2721 food safety standard.  
● Industrial salt (for chemical processing, snow melting, and water treatment): Removes heavy-metal‑bearing minerals and colored impurities to prevent equipment blockage and ensure smooth chemical reactions.  
● Premium salts (Himalayan pink salt, rose salt, seasoning salt): meticulously sorted to preserve their natural color, with impurities and discolored particles removed, thereby enhancing their added value.  
(2) By Production Stage  
1. Raw Ore Preprocessing (Underground/Stockyard)  
● Pre‑sorting prior to grinding, with early waste rejection, enhances the grade of the raw ore and reduces transportation and processing costs.  
● Designed to withstand high-humidity, high-dust, and highly corrosive operating conditions, with a corrosion‑resistant, dust‑proof, and waterproof housing.  
2. After crushing and screening (midstream of the production line)  
● Multi-stage sorting: After coarse crushing, intermediate crushing, and fine crushing, color sorting is performed at each stage to progressively purify the material and minimize the carryover of high-quality product.  
● Mixed particle compatibility: Adapts to a wide range of particle sizes from 1 to 50 mm, eliminating the need for frequent part changes and supporting flexible production across multiple specifications.  
3. Final Product Refinement and Packaging (Terminal Quality Control)  
●Final quality control: Remove trace amounts of discoloration, foreign matter, and agglomerates to ensure that the finished product meets specified standards for whiteness, purity, and appearance.  
● Small-batch/High-end line: High-precision mode, zero tolerance for foreign particles, tailored to meet the branding needs of premium salt brands.  
(3) By Operating Conditions and Environment  
1. High-humidity, high-salinity corrosive environment (salt farms/salt lakes)  
● The entire unit is constructed from 304/316 stainless steel with an anti-corrosion coating, offering resistance to salt‑spray corrosion, extending service life and reducing operation and maintenance costs.  
● Dust‑proof, sealed optical compartment that prevents salt and dust accumulation, ensuring stable recognition accuracy.  
2. Large-particle/uneven materials (rocks and minerals/coarse salt)  
● Track‑type conveyor combined with wide‑area scanning ensures no blind spots and is compatible with flat, flaky, and irregular salt crystals.  
●AI multispectral recognition: penetrates weak inclusions and detects subtle color differences, with accuracy reaching up to 99.9%.  
3. High-Capacity Continuous Operation (Large-Scale Salt Enterprises)  
● Single-unit capacity: 10–20 tons/hour; multiple units can be operated in parallel, making it suitable for ten-thousand-ton‑class production lines.  
● Low-energy design, saving 25% on electricity compared to conventional equipment and reducing the cost per ton of salt.  
(4) Typical Customer Scenarios  
● Domestic rock salt/lake salt: Large-scale production, with purity increased by 5–10 percentage points and waste losses reduced.  
● Overseas salt lakes: Designed to withstand local high-salinity, high-humidity conditions, ensuring stable sorting and meeting export standards.  
● Small and medium-sized refined salt plants: Replace manual sorting, reduce costs, and enhance product competitiveness.  
● Chemical and de-icing salt companies: Strictly control impurities to ensure downstream product quality and equipment safety.  
(5) Core Values  
● Quality Enhancement: Purity ranging from 99.5% to 99.9%, with stable whiteness and zero tolerance for impurities.  
● Cost reduction: fewer labor costs, reduced material waste, extended equipment lifespan, and lower energy consumption.  
● Efficiency Enhancement: Production capacity increased by 30%, sorting speed is faster, and it is compatible with continuous production.  
● Compliance: Meets both food-grade and industrial-grade standards, catering to export requirements and brand‑building needs.

II. Technical Parameters

Note: The above production figures are based on salt ore with a particle size of 1–5 cm, containing 5% impurities.

III. Technical Advantages of the Product

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 sorting + shape sorting” capabilities tailored to various materials. With freely configurable modes, you can select from a vast array 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 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. 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 handling, which effectively increases the carry‑over ratio and sorting purity while 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.

IV. Color Sorting Performance

Salt Mine Color Sorting Case Study
Salt mine raw material	Salt mine product	Salt mine waste

V. On-site visits by selected domestic and international clients