Over 10,000+ customers' choice, Focus on screening industry 40+ years
Characteristics of sea salt screening:
Sea salt is produced by evaporating seawater, retaining natural minerals and trace elements. Sea salt particles vary widely – from coarse grains to fine powder – and contain a certain proportion of shell fragments, sand, and other impurities. The main tasks of sea salt screening are: removing coarse impurities and foreign matter, grading sea salt by particle size, and controlling finished particle size range.
Sea salt screening mesh requirements are typically broad – from coarse screening (8‑20 mesh) to fine screening (40‑80 mesh). Due to its natural origin, sea salt may have slightly higher moisture content than refined salt – lumping issues should be considered during screening.
Characteristics of refined salt screening:
Refined salt is purified table salt with high purity, uniform particles, and finer size. The main tasks of refined salt screening are: ensuring particle size uniformity (typically 40‑80 mesh or finer), removing trace lumps and foreign matter, and ensuring product purity.
Refined salt screening requires higher accuracy, with strict demands on screening precision and hygiene standards.
Stainless Steel Material – The Core Assurance for Salt Screening
Whether for sea salt or refined salt, stainless steel is the "standard" for screening equipment. Gaofu's stainless steel salt rotary vibrating sieve provides comprehensive material assurance:
Entire machine in 304/316L stainless steel – corrosion‑resistant, hygienic, and durable.
The entire machine and all parts that contact salt materials are constructed of 304 or 316L stainless steel. 304 stainless steel offers good corrosion resistance against salt material attack; 316L stainless steel – with added molybdenum – provides superior resistance to chloride ions, particularly suitable for more corrosive materials such as sea salt.
Stainless steel is clean, hygienic, corrosion‑resistant, high‑temperature‑resistant, rust‑proof, and easy to clean and sanitise. Internal and external surfaces are finely polished – smooth, clean, with no black spots or burrs.
Food‑grade seals – pure and contamination‑free.
Seals, bouncing balls, and other accessories are made of food‑grade silicone – non‑toxic and odourless – ensuring a pure, contamination‑free screening process that fully complies with GB/T standards and food GMP regulations.
Stainless steel screens – accurate and durable.
Screens are made of high‑strength stainless steel wire with accurate apertures and high screening accuracy. Stainless steel screens maintain good screening performance under high‑speed vibration with minimal wear. The unique mother‑screen / fine‑screen design extends screen service life.
1. High‑precision screening for different salt types
Gaofu's stainless steel salt rotary vibrating sieve achieves screening accuracy up to 600 mesh (0.02 mm) and filtration precision down to 5 microns. It supports flexible configurations of 1 to 5 screen decks , enabling 2 to 6 grades of separation in a single feed. Whether for coarse sea salt grading or fine refined salt screening, suitable screen configurations are available.
2. Effectively breaks lumps for smooth screening
To address lumps that may form during storage of both sea salt and refined salt, the three‑dimensional vibration effectively breaks apart slightly caked salt grains due to moisture absorption, without damaging salt crystal structure. The bouncing‑ball cleaning system continuously knocks the screen, effectively preventing salt particles from blocking the mesh.
3. Fully enclosed structure for clean production
The equipment features a fully enclosed structure – the screening process takes place in a closed chamber, preventing fine salt dust from escaping. Impurities and oversize material are automatically discharged from the reject outlet, while on‑spec product is precisely collected from the discharge port.
4. Quick screen changes for multi‑product production
Screen changes take only 3‑5 minutes. For producers who handle both sea salt and refined salt, quick screen change capability significantly reduces changeover downtime.
5. Stable operation supporting continuous production
The reinforced frame design provides strong load capacity and supports long‑duration continuous operation. Low noise and reasonable energy consumption help reduce long‑term operating costs.
| Evaluation Dimension | Sea Salt Screening | Refined Salt Screening |
| Screening mesh | 8‑80 mesh (coarse to fine) | 40‑120 mesh (fine screening) |
| Number of decks | 2‑3 (coarse impurity removal + grading) | 1‑2 (fine grading) |
| Material requirement | 304 or 316L stainless steel | 304 or 316L stainless steel |
| Cleaning method | Bouncing‑ball cleaning | Bouncing‑ball or ultrasonic cleaning |
| Throughput | Higher | Moderate |
Sea salt and refined salt – although both are salts – have different screening priorities. Sea salt requires handling larger particles and more impurities, while refined salt demands higher fineness uniformity and purity. Whichever you produce, you need a screening machine with reliable materials, stable accuracy, and hygienic construction. Gaofu Machinery's stainless steel salt rotary vibrating sieve – with its all‑stainless‑steel construction, high‑precision screening capability, fully enclosed clean structure, and quick screen change design – offers a reliable, durable screening solution for sea salt, refined salt, and all types of salt products.
Food Industry Client Testimonials
Nestlé, CP Group, Haitian Flavour & Fragrance, Yihai Kerry, Yili, Mengniu,Shuanghui, Wahaha, Master Kong, Want Want, Anjoy Foods, Angel Yeast,Yangyuan Foods, Uni-President Enterprises, Qiaqia Food, Luhua Group,Alpenliebe, Golden Monkey, Orion, Xizhilang,Sanquan Foods, Synear Food, Oishi, Wong Lo Kat, Yanjing Beer, Seamild,Jinpai, Chubang, Hengshun Vinegar Industry, Longda Group, Beijing Daoxiangcun, Anhe Dairy,Weiwei Group, Xiangpiaopiao, Maiquer, Tianbing, Binqi Food, Ligao Okun
Fortune 500 Client Testimonials
CNPC、CSCEC、Sinochem Holdings、CRCC、China Minmetals Corporation、CNOOC、CR、Sinopharm、CHN Energy、COFCO Corporation、Huawei Technologies、PowerChina、CITIC Group、Wuchan Zhongda Group、NORINCO、Chalco、CNBM、 Shaanxi Coal and Chemical Industry Group、Ansteel Group、CETC、CSSC、CASC、CEC、Jinchuan Group、CASIC、Conch Cement、CNNC、SPH、Shanxi Coking Coal Group、 Zhongtai Chemical、GPHL、DEC、Sinosteel Corporation、MCC、China National Salt Industry Chemical、China Baowu Steel Group、China Animal Husbandry Industry Co., Ltd.、CECEP
About Gaofu
Xinxiang Gaofu Machinery Co., Ltd. was founded back in the 1980s. With over 40 years of development, it has been certified as a National-level Specialized, Refined, Unique & Innovative Little Giant Enterprise, National Green Factory, National High-tech Enterprise, and National Intellectual Property Advantage Enterprise, and serves as the President Unit of China Vibration Screening Industry Association.
The company is accredited with the Henan Provincial Industrial Design Center, Henan Provincial Engineering Technology Research Center for Intelligent On-line Screening System, and Xinxiang Municipal Engineering Technology Research Center for Fine Screening.
Gaofu has obtained more than 500 patents including invention patents, utility model patents and design patents, been awarded the Science and Technology Achievement Prize issued by the Ministry of Industry and Information Technology of China, and participated in drafting and formulating 4 national standards.
Gaofu's product portfolio covers multiple series and hundreds of specifications, including vibrating screening equipment, conveying equipment, coal crushing equipment, filtration equipment and automatic material handling systems.
Core products include vibrating screens, screening machines, vibratory sifters, rotary vibrating screens, ultrasonic vibrating screens, linear vibrating screens, airflow screens, gyratory screens, roller screens, dewatering screens, bar screens, vacuum feeding machines, dust-free feeding stations, bulk bag feeding stations, feeding systems, automatic powder feeding systems, automatic slag-discharging filters, leaf filters, clay filters, toothed roll crushers, coal crushers and other machinery.
These products are widely applied in food, pharmaceutical, chemical, metallurgy, construction materials, mining, thermal power, environmental protection and many other industries, winning recognition and trust from over 10,000 clients worldwide.
Gaofu products enjoy strong sales across Greater China, and are exported to more than 100 countries and regions such as Russia, Canada, the United States, New Zealand, Japan, Brazil and South Africa.
Upholding the corporate mission of Improving material quality & efficiency to fully satisfy customer demands, Gaofu maintains long-term partnerships with clients to achieve win-win development.
At present, Gaofu is an official qualified supplier for numerous Fortune Global 500 enterprises, including CNPC, Sinopec, Sinochem Holdings, China Resources Group, Sinopharm Group, COFCO, China National Building Material, China Aerospace Science and Technology Corporation, Jinchuan Group and more.
Gaofu Machinery ranks No.1 in global sales volume of vibrating screens.
In May 2024, Frost & Sullivan, a world-renowned international consulting firm, issued a Market Position Verification Certificate confirming that Gaofu achieved the world's largest shipment volume of vibrating screens in the global market in 2023.
