I. Product Applications:

(1) By Salt Type and Raw Material Form

1. Rock salt (well salt/mineral salt)

• Rough screening 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.

• After crushing, refined 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.

• Powdered 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 food-grade salt and premium household‑use salt.

• Fine salt/snowflake salt (<1 mm): Precisely sorts highly reflective crystals and removes trace impurities, ensuring the premium appearance and safety of high-end salt products.

3. Special Salt Types

• Refined edible salt (iodized salt, low-sodium salt): Strictly controls black spots, yellowing, and foreign matter, and 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, seasoned 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 before 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 width range of 1–50 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 contaminants, 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, preventing salt and dust accumulation to ensure stable recognition accuracy.

2. Large-particle/uneven materials (rocks and minerals/coarse salt)

• Belt conveyor combined with wide-area scanning, eliminating blind spots and accommodating 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 production lines with capacities of tens of thousands of tons.

• Low-energy design, saving 25% on electricity compared to conventional equipment and reducing the cost per ton of salt.

(4) Typical Customer Scenarios

• Major domestic salt mines (e.g., Zhongyan, Huaiyan): Large-scale production of rock salt and lake salt, with purity increased by 5–10 percentage points and waste losses reduced.

• Overseas salt lakes (Canada, Australia, India, Russia): 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%, stable whiteness, and zero tolerance for impurities.

• Cost reduction: fewer labor costs, lower material waste, extended equipment lifespan, and reduced energy consumption.

• Enhanced efficiency: 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. Product Model and Technical Specifications:

Note: The above production figures are based on salt ore with particle sizes ranging from 1 to 5 cm, containing up to 5% impurities.

III. Product Technical Advantages:

01. 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 materials.

02. Camera Image Acquisition System

Imported high-precision camera lenses ensure clear and accurate images.

It employs an imported, high-precision, 5,400-pixel, high-speed linear full-color smart CCD for high-definition recognition and rapid sorting.

03. Self-priming nozzle and valve actuation mode

It employs a professional high-speed air valve, offering fast response, low power consumption, and an extended service life.

Reduced gas consumption, faster response, more precise strikes, smaller footprint, and higher throughput.

Service life exceeds 10 billion cycles.

04. Light Source System

LED optical design system, with multiple light sources available to accommodate different materials;

Address issues such as high operating temperatures, significant power loss, and shortened lifespan that arise from prolonged use of LED light sources.

Ensure the LED light source remains durable and long-lasting under constant temperature conditions.

05. Feeding System

An advanced material-feeding detection system is employed to ensure uniform material flow.

06. 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.

07. 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.

08. Operating System – Simple and Easy to Use

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.

IV. Color Sorting Performance:

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