Over 10,000+ customers' choice, Focus on screening industry 40+ years
The core objective of salt particle refinement is clear – to process large salt lumps or coarse salt into uniformly sized small particles to meet the requirements of different applications. Refined salt typically ranges from 0.15 to 0.85 mm, while crushed and washed salt is generally below 2 mm. This particle size range is not "ultra‑fine," yet traditional crushing methods often create a series of problems in achieving this target:
Excessive fines reduce yield. Traditional hammer crushers rely on high‑speed rotating hammers to impact the material – a form of "violent crushing." The notable drawback is "over‑grinding" – a large proportion of salt particles are excessively broken into fines far smaller than the target size. These fines cannot be sold as合格 product and require additional screening and dust collection equipment, adding process steps and energy consumption. For salt processors pursuing high yield, every tonne of salt reduced to powder represents direct economic loss.
Poor particle shape affects product quality. High‑speed impact not only generates fines but also creates irregular particle shapes – edges are rounded, surfaces become rough. For refined salt, sea salt, and other products targeting premium markets, particle shape and appearance directly influence market positioning and pricing.
Frequent maintenance drives up operating costs. The hammers, liners, and other wear parts of traditional crushers wear out quickly, requiring frequent replacement and extended downtime. Each replacement means production interruption and labour input.
High energy consumption – uneconomical. High‑speed impact consumes substantial electrical energy to maintain the hammer's rotational kinetic energy. At the same throughput, traditional hammer crushers consume significantly more energy than roller‑type crushing equipment.
The fundamental difference between Gaofu's salt double roller crusher and traditional crushing equipment lies in the completely different mode of force application.
Traditional hammer crushers rely on high‑speed rotating hammers to impact the material – an "impact‑based" crushing method. While this offers high throughput, the impact force is uncontrollable, resulting in extensive over‑grinding.
Gaofu's salt double roller crusher uses a completely different principle: two motors drive two sets of crushing rollers in counter‑rotating motion. Material enters the V‑shaped crushing chamber between the two rollers from the top feed opening. Through the friction and compression force of the roller surfaces, material is drawn into the crushing chamber and subjected to continuous high‑pressure compression. When the material is compressed to less than the gap between the two rollers, it is discharged from the bottom.
The key difference is: hammer crushers make material "shatter," while double roller crushers make material "crack under pressure." The former involves uncontrollable impact, the latter involves controlled compression. This difference determines the unique advantages of the double roller crusher for salt processing – the crushing process is gentler, more precise, and effectively controls fines generation.
Gaofu's salt double roller crusher achieves its low breakage rate through the following core technical design features:
Combined "squeeze + split" crushing force. Gaofu's double roller crusher abandons the traditional "impact" method and adopts a combined crushing force of "splitting, rubbing, folding, and impacting." Material between the two rollers is subjected to controlled compression and shear forces, rather than uncontrollable impact forces. This design effectively reduces ineffective grinding within the chamber – fines content in the finished product is significantly reduced, particles have good shape, and particle size distribution is concentrated.
Precise roller gap adjustment – controlled particle size. The gap between the two rollers determines the discharge particle size. Gaofu's salt double roller crusher is equipped with a convenient roller gap adjustment mechanism – operators can precisely set the gap according to production requirements, thus controlling the output particle size range. Increase the gap for coarser particles, decrease it for finer particles – particle size control is achieved on a single machine.
Differential speed operation – self‑cleaning to prevent sticking and blockage. To address the potential issues of salt sticking to rollers and material blockage during crushing, Gaofu's double roller crusher uses differential speed operation – the two rollers rotate at different speeds, providing mutual scraping and self‑cleaning during crushing. This design effectively prevents salt particle adhesion and accumulation on the roller surfaces, ensuring continuous and stable operation. This feature is particularly important when processing sea salt, wet salt, and other materials with some degree of adhesion.
Selective crushing – qualified particles are not re‑ground. Gaofu's double roller crusher uses a "selective crushing" principle – the two rollers form a rotating space screen that specifically targets oversized material for crushing, while already‑qualified particles are not re‑ground. This design fundamentally avoids over‑grinding caused by "repeated crushing of合格 particles."
Fines generation can be effectively controlled at low levels. In actual applications, Gaofu's double roller crusher can keep over‑grinding rates effectively low. The significant reduction of fines content in the finished product is particularly evident in the crushing of crystalline particles such as salt and sugar.
As a crystalline granular material, salt has characteristics such as brittleness, ease of breakage, and moderate hygroscopicity. Gaofu's salt double roller crusher fully considers these properties in its design:
Uniform feed distribution ensures consistent crushing. The equipment is equipped with a feed distribution device that delivers material evenly between the two crushing rollers. Uniform feed ensures that every salt particle receives consistent crushing treatment, avoiding local overloading or under‑crushing that could cause particle size inconsistency.
Speed differential enhances crushing efficiency. The two crushing rollers are driven by separate motors. The speed differential between the counter‑rotating rollers creates shearing and compression forces from the teeth on the roller surfaces. The shear force from the speed differential means salt particles are subjected to both compression and shear – improving crushing efficiency and producing more regular particle shapes.
Corrosion‑resistant materials withstand long‑term salt exposure. Salt is corrosive to metal equipment. The crushing rollers and salt‑contact components of Gaofu's salt double roller crusher are made of corrosion‑resistant materials, capable of withstanding long‑term salt material attack, ensuring stable equipment operation.
Suitable for multiple salt types. The equipment is suitable for crushing sea salt particles, as well as lake salt, rock salt, and refined salt particle refinement.
Gaofu's salt double roller crusher delivers multiple practical improvements for salt processors:
Improved yield of target particle size fraction. Low breakage rate means more material is output at the target particle size rather than becoming fines. For salt processors, this means more合格 product from each tonne of raw material – directly improving profitability.
Reduced burden on downstream processes. Reduced fines generation means lower loads on downstream screening and dust collection systems. Screening equipment handles less fine powder, and dust collection system energy consumption decreases accordingly.
More stable operation and easier maintenance. Gaofu's double roller crusher has a simple, compact structure. The modular design makes wear part replacement more convenient. Roller teeth use a split/modular design – only the tooth sleeves need replacement when worn, without removing the entire roller assembly. Less maintenance downtime means higher equipment utilisation.
Reasonable energy consumption – controllable operating costs. At the same throughput, the energy consumption of the double roller crusher is significantly lower than traditional impact crushers. For salt processors requiring long‑duration continuous operation, energy savings directly translate to lower operating costs.
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.
