Over 10,000+ customers' choice, Focus on screening industry 40+ years
The first threshold for salt grading is accuracy. Coarse salt contaminated with fines, or fine salt containing coarse particles – any size mixing means product downgrading, directly impacting profit margins.
Where does Gaofu's salt linear vibrating screen's accuracy come from?
The linear vibrating screen uses dual vibrating motors operating in synchronised opposite directions. When the two motors run in opposite directions, the lateral excitation forces cancel each other out, while the longitudinal forces are transmitted to the entire screen box, generating stable linear vibration on the screen surface. Material is thrown up on the screen and moves forward in a straight line in a bouncing motion – particles smaller than the screen openings pass through to the lower layer, while oversize material travels along the screen surface to the outlet.
This linear motion trajectory ensures accuracy stability: material moves along a long path with uniform distribution on the screen surface, without accumulation or deviation that could cause missed screening or mis‑screening. Gaofu's linear vibrating screen achieves screening accuracy of over 95%.
The unique screen mounting structure is another guarantee of accuracy. Gaofu's linear vibrating screen features a specially designed screen mounting structure that ensures uniform screen tension and a flat screen surface – fundamentally eliminating size mixing and cross‑contamination. Screened salt particles are uniform in size, and each specification grade has reliable purity.
Flexible adjustment capability further ensures accuracy. The excitation angle can be adjusted within a range of 0° to 7°. For free‑flowing salt particles, the angle can be increased to raise throughput without affecting accuracy; for materials with high fines content, the angle can be decreased to extend the screening path and improve grading accuracy. This "tailored to material" adjustment capability ensures accuracy under different operating conditions.
Screening mesh covers 8 to 120 mesh (up to 400 mesh). Whether for coarse salt, medium salt, fine salt, or ultra‑fine salt powder, simply change the screen to adjust the particle size range. With flexible configurations of 1 to 5 screen decks , a single machine can simultaneously produce 2 to 6 different particle size specifications of salt. One machine completes multi‑stage grading – material between decks does not mix, and the purity of each grade is reliably assured.
On salt production lines, screening equipment capacity directly determines the maximum output of the entire line. If equipment throughput lags, upstream crystallisation and drying processes will experience material accumulation; if equipment stops frequently, downstream packaging processes will idle.
Where does Gaofu's salt linear vibrating screen's throughput advantage lie?
Large screening area provides the physical foundation for high throughput. Gaofu's SZF series linear vibrating screen offers various screen sizes from 500×1600 mm to 1500×4000 mm. A larger screening area means more space for material dispersion and more opportunities for particles to pass through the screen. Single‑machine throughput reaches 15‑500 t/h. For salt production lines processing hundreds of tonnes per day, a single linear screen matches the capacity rhythm of the entire line.
Multi‑deck design achieves "one feed, multiple outputs." Supporting flexible configurations of 1 to 5 screen decks , a single feed can separate 2 to 7 particle size fractions simultaneously. Coarse salt, medium salt, and fine salt are produced in one feed – no need for multiple screening passes or machines in series. This design not only improves single‑machine output efficiency but also reduces material transfer between machines and associated losses.
Linear motion trajectory determines throughput efficiency. Material moves in a straight line on the screen surface, providing a long screening path and high screen utilisation – ideal for large‑volume continuous screening operations. The fully enclosed structure with automatic discharge design makes it suitable for 24‑hour production line operation.
Low energy consumption with high output. Gaofu's linear vibrating screen features low energy consumption, high output, simple structure, and easy maintenance. While achieving large throughput, equipment operating costs remain at a reasonable level – capacity increases do not lead to disproportionate energy consumption growth.
The most easily overlooked yet most critical challenges in salt screening are blinding and corrosion. Salt crystals are cubic in shape and can easily become wedged in mesh openings during screening, causing blinding. Salt materials are corrosive to metals in humid environments – ordinary carbon steel equipment rusts rapidly in salt environments.
How is the blinding problem solved?
The linear vibrating screen's motion pattern itself offers anti‑blinding advantages – material moves forward in a bouncing motion on the screen surface rather than accumulating statically, reducing fine particle residence time on the mesh. Proper screen design further enhances anti‑blinding performance. The equipment's compact structure ensures smooth material movement on the screen surface, effectively preventing blinding.
How is durability ensured?
Material is the first line of defence for durability. All parts that directly contact salt are constructed of 304 or 316L food‑grade stainless steel. 316L stainless steel – with its high nickel and molybdenum content – offers excellent corrosion resistance, particularly suitable for handling chloride‑containing sea salt, preventing equipment rusting or material contamination caused by salt corrosion. It meets food‑grade production requirements, ensuring no heavy metal contamination during screening.
The fully enclosed structure is the second line of defence for durability. The equipment features a fully enclosed design that prevents dust from escaping during operation. Good sealing reduces salt dust corrosion on external equipment structures and prevents salt dust from entering bearings and other precision components, accelerating wear.
Easy maintenance is the guarantee of durability. Gaofu's linear vibrating screen has a well‑designed structure with low failure rates and quick, simple screen changes. The modular design enables rapid screen replacement, reducing downtime. Equipment stability is high, suitable for long‑duration operation. The unique screen mounting structure ensures uniform screen tension and longer screen life.
Accuracy, throughput, and anti‑blinding durability are the core competencies of the salt linear vibrating screen – but Gaofu's salt linear vibrating screen offers more than these.
Food‑grade materials eliminate contamination at the source. All parts that contact salt are made of high‑quality 304 food‑grade stainless steel. The internal surfaces are finely polished to prevent dirt accumulation and bacterial growth. Seals 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.
Fully enclosed structure – environmental protection and yield improvement. Traditional screening often suffers from dust dispersion, wasting material and polluting the workshop environment. Gaofu's salt linear vibrating screen features a fully enclosed structure with no dust emission, improving operator working conditions. Impurities and oversize material are automatically discharged from the reject outlet, while on‑spec salt is precisely collected from the discharge port – reducing material waste. The equipment can be equipped with a negative‑pressure extraction system for enhanced workshop environment.
Why choose a salt linear vibrating screen for salt grading? The answer lies in three key words: High Accuracy – screening accuracy over 95%, unique screen mounting structure eliminates size mixing, 8‑120 mesh wide adjustable range; Large Throughput – single‑machine throughput 15‑500 t/h, 1‑5 screen decks produce multiple specifications in one feed; Anti‑Blinding and Durable – linear motion anti‑blinding design, 304/316L stainless steel resists salt corrosion, fully enclosed structure extends equipment life.
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.
If you are looking for screening equipment with high accuracy, large throughput, and anti‑blinding durability for salt grading on your salt production line, we welcome you to learn more about Gaofu's SZF series salt linear vibrating screen range. Based on your actual production scenario, we can provide technical data, selection advice, and customisation support.
