Salt serves vastly different purposes across industries. Food‑grade table salt must meet strict purity standards. Chemical‑grade salt powers industrial processes. Pharmaceutical‑grade sodium chloride requires the highest level of cleanliness. A salt sieving machine must therefore handle all these grades while resisting corrosion and delivering accurate particle separation. Gaofu Machinery designs rotary vibrating sieves that meet the specific demands of each salt application. This guide helps you select the right equipment for your operation.

Food‑grade salt: hygiene and purity first
Food‑grade salt reaches the consumer directly. Therefore, the sieving machine must prevent contamination and clean easily. Gaofu builds its rotary vibrating sieves with product‑contact parts in SUS304 or SUS316L stainless steel. We polish all internal surfaces to a smooth, mirror‑like finish. This eliminates crevices where bacteria or salt residues could accumulate. Quick‑release clamps allow operators to open the machine without tools. They can dry‑brush or wet‑wash the interior in minutes. Furthermore, the fully enclosed design prevents dust from escaping and keeps external contaminants out. A dust extraction port connects to a central collection system. Consequently, the sieving environment stays clean and the risk of cross‑contamination drops sharply. This design supports HACCP and BRC compliance in food processing facilities.

In addition, the rotary vibrating sieve preserves salt crystal integrity. The three‑dimensional motion rolls the salt gently across the mesh rather than throwing it. As a result, the machine generates fewer fines and less dust. The final product flows freely and dissolves consistently. Operators can adjust the vibration amplitude and phase angle to suit fine table salt, coarse sea salt, or flake salt. Therefore, a single salt sieving machine can serve multiple food‑grade products without mechanical changes.

Chemical‑grade salt: corrosion resistance and durability
Chemical processors use salt in water softening, de‑icing, and as a raw material for chlorine and caustic soda production. The working environment is often harsh. The salt sieving machine must withstand continuous exposure to a corrosive material. Gaofu offers rotary vibrating sieves with SUS316L stainless steel contact parts. This grade contains molybdenum for extra resistance to chloride attack. The polished internal surfaces resist pitting and make cleaning straightforward. Moreover, the enclosed, dust‑tight housing prevents corrosive salt dust from escaping into the plant. This protects surrounding equipment and structures from accelerated corrosion.

Chemical applications often demand high throughput. Gaofu rotary vibrating sieves can handle several tons per hour. The multi‑deck configuration allows operators to remove oversize particles on the top deck, collect on‑spec salt on the middle deck, and discard fines on the bottom deck—all in one pass. Consequently, the sieving process is efficient and requires minimal floor space.

Pharmaceutical‑grade salt: cGMP and precision
Pharmaceutical‑grade sodium chloride serves as an excipient in tablets, saline solutions, and dialysis fluids. The purity requirements are extremely strict. A salt sieving machine for pharmaceutical use must meet current Good Manufacturing Practices. Gaofu builds these sieves with the same polished SUS316L stainless steel and tool‑free cleaning features. For validated cleaning, we can integrate Clean‑in‑Place spray nozzles and drain connections. The fully enclosed design protects the product from environmental contamination and contains any dust.

Screening accuracy is critical for pharmaceutical salt. The rotary vibrating sieve delivers a narrow, repeatable particle size distribution. Operators can fine‑tune the vibration amplitude by repositioning the eccentric weights. The stationary screen maintains uniform mesh openings over thousands of cycles. Moreover, Gaofu provides material certificates and surface finish reports to support equipment qualification and audits. Therefore, pharmaceutical manufacturers can confidently document their screening process.

Key features that benefit all three sectors
Several design elements of the rotary vibrating sieve prove valuable across food, chemical, and pharmaceutical applications. First, the adjustable three‑dimensional motion prevents screen blinding. Even damp or sticky salt passes through without clogging the mesh. Second, the multi‑deck capability allows precise grading into several size fractions in one pass. Third, the enclosed, dust‑tight design protects both the product and the work environment. Fourth, the polished stainless steel surfaces resist corrosion and simplify cleaning. Fifth, operators can change screens quickly using the lightweight frame design. Consequently, a single salt sieving machine can serve multiple purposes in a multi‑industry facility.

Conclusion
Choosing a salt sieving machine for food, chemical, and pharmaceutical salt requires attention to materials, motion flexibility, hygiene, and durability. Gaofu rotary vibrating sieves meet these demands with corrosion‑resistant stainless steel construction, adjustable vibration, multi‑deck grading, and easy‑clean design. Contact our sales engineering team today to discuss your salt screening requirements or to arrange a material test.

Client Testimonials

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

Pharmaceutical Industry Client Testimonials

Dong-E E-Jiao, Harbin Pharmaceutical Group, North China Pharmaceutical,Yangtze River Pharmaceutical Group, Taiji Group, Huadong Medicine,CSPC Group, Northeast Pharmaceutical, Guangzhou Baiyunshan, Tongrentang,Huiren Pharmaceutical, Fosun Pharma, Xiuzheng Pharmaceutical, Lijun Pharmaceutical,Luye Pharma Group, Di'ao Group, TianGongLi, Hengrui Medicine, Jiuzhitang, Jiangzhong Pharmaceutical, Lunan Pharmaceutical, Yunnan Baiyao, Sunflower Pharmaceutical,China Sanjiu Enterprise Group, Sanjin Pharmaceutical, Yiling Pharmaceutical,Wantong Pharmaceutical, Pientzehuang, Ma Yinglong Pharmaceutical, Guangyuyuan,Aodong Pharmaceutical, Besunyen, Jingfukang Pharmaceutical, Furen Pharmaceutical Group,Guizhou Bailing, Conba, Huasu Pharmaceutical, Yifang Pharmaceutical

Chemical Industry Client Testimonials

Wanhua Chemical, Yuntianhua Group, Kingfa Science & Technology, Formosa Plastics Group, China Pingmei Shenma Group, Kemai Co., Ltd., Luxi Chemical, Liby Group, Oriental Yuhong, Davco, Chenming Group, Guanhao High-Tech
Kaifei Chemical, Sunsine Chemical, Weilin Co., Ltd., Xuyang Group, 3Trees, Maydos, Loyal Group (Kingpor Group), AkzoNobel, CSSC Hanguang, Haike Group, Nice Group, Taishan Fiberglass, Wanhua, Red Eagle, China XLX Fertiliser (Xinlianxin), CCtech Catalysis, China National Bluestar, Sakura Paint, ITANOS, Yanggu Huatai, Sennics, Longxing Chemical Group, Tunhe Co., Ltd., GHW International, Jianye Chemical, Finehope

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. started back in the 1980s. Over more than 40 years, it has earned certifications 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 holds accreditation for 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, and received the Science and Technology Achievement Prize issued by the Ministry of Industry and Information Technology of China. It also 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 serve 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 the company exports them 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.