Over 10,000+ customers' choice, Focus on screening industry 40+ years
Crushing moist salt is far more difficult than crushing dry salt, mainly in the following aspects:
Roller sticking and blockage cause frequent stoppages. Moist salt contains significant moisture and brine, making it highly prone to adhering to roller surfaces, crushing chamber walls, and discharge channels. Traditional hammer crushers have strict requirements for material moisture content – when moisture exceeds a certain level, the screen plate is prone to sticking and blockage, causing a sharp drop in throughput. If the equipment lacks anti‑sticking design, operators often have to stop frequently for cleaning – sometimes multiple times per shift. For salt production lines requiring 24‑hour continuous operation, every unplanned stoppage means lost production capacity.
Lumpy materials are difficult to crush uniformly. Moist salt tends to form hard lumps of varying sizes during storage and transport. These lumps have uneven hardness and irregular shapes – traditional impact crushers either "cannot break them" or "over‑crush them" – large lumps cannot be effectively crushed, while already‑qualified fine particles are repeatedly ground into fines. Over‑grinding not only reduces the yield of the target particle size fraction but also increases the burden on downstream screening and dust collection systems.
Accelerated equipment corrosion. The brine carried by moist salt is highly corrosive. Prolonged contact with ordinary carbon steel equipment causes roller surface rusting and structural strength degradation. Rust particles that contaminate the material directly affect product quality and food safety.
The key to Gaofu's anti‑sticking and anti‑blockage salt double roller crusher lies in the combination of double‑roller compression and differential‑speed self‑cleaning.
Double‑roller compression + shearing replaces impact. 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 and shearing action. When the material is crushed to less than the gap between the two rollers, it is discharged from the bottom.
Unlike the "impact" method of traditional hammer crushers, Gaofu's double roller crusher uses a combined "squeeze + split" crushing force – material undergoes controlled fracturing between the rollers. At the same throughput, the yield of the target particle size fraction is higher, and the proportion of excessive fines is significantly reduced – lowering downstream screening loads and material loss. For moist salt lumps, this gentle crushing method effectively breaks lumps without generating excessive fines.
Differential‑speed operation enables self‑cleaning. To address the problem of moist salt readily adhering to roller surfaces during crushing, Gaofu's anti‑sticking and anti‑blockage salt double roller crusher uses differential‑speed operation – the two rollers rotate at different speeds. The speed differential creates mutual scraping and self‑cleaning during crushing, effectively peeling off moist salt adhering to the roller surfaces. The roller surfaces feature anti‑adhesion textures and self‑cleaning structures – combined with the appropriate speed differential – effectively reducing the accumulation and blockage of wet, sticky material on the roller bodies. This design significantly reduces the frequency of manual roller cleaning, ensuring continuous and stable operation.
Beyond the core function of differential‑speed self‑cleaning, Gaofu's anti‑sticking and anti‑blockage salt double roller crusher incorporates multiple specialised design features to further improve the smoothness of moist salt crushing:
Anti‑sticking and anti‑blockage special surface treatment. The roller surfaces are treated with a non‑slip, anti‑adhesion special process, combined with a smooth‑flow crushing chamber design. For materials with high moisture, high viscosity, and easy lumping, this effectively prevents material adhesion to roller surfaces and accumulation blockage. The internal design has no material accumulation dead corners – discharge is smooth and continuous, without frequent stoppages for cleaning.
Integrated screening and crushing – avoiding repeated crushing. The equipment combines screening and crushing functions in one unit. Material entering the machine first passes through a screening area – fines that already meet the requirement pass through directly without entering the crushing zone; only oversized material is crushed. This design effectively avoids "re‑crushing of already‑qualified material," significantly reducing over‑grinding. For moist salt lumps, this means salt particles that have already reached the target size are not repeatedly ground into finer powder – protecting the yield of the target particle size fraction.
Large‑angle smooth discharge channels. Screening and crushing channels feature large‑angle, smooth‑curved surfaces to minimise material adhesion. Combined with well‑designed discharge channels, even when processing moist salt with high moisture content, discharge remains smooth – eliminating material accumulation and blockage.
Corrosion‑resistant materials – capable of withstanding salt corrosion. To address the hygroscopic and highly corrosive nature of industrial salt, double roller crushers are often manufactured with wear‑resistant and corrosion‑resistant materials for the roller surfaces. Gaofu's anti‑sticking and anti‑blockage salt double roller crusher uses corrosion‑resistant materials for the crushing rollers and salt‑contact components – capable of withstanding long‑term saltwater attack and preventing equipment rusting that could generate metal particles contaminating the material.
Continuous moist salt crushing requires not only anti‑sticking and anti‑blockage hardware design but also intelligent control systems to ensure operational safety:
Load sensing and automatic reversal. When foreign objects or momentary overload are detected, the equipment can automatically reverse for a few seconds to discharge the obstruction, then resume forward rotation. This feature is particularly useful in moist salt crushing – occasional hard lumps or foreign objects do not cause the equipment to jam and stop.
Intelligent monitoring system. The equipment can be equipped with an intelligent monitoring system that senses equipment operating status in real time (such as current, temperature, vibration). It alerts operators and takes protective measures when abnormalities are detected – improving operational safety.
Overload protection and automatic roll gap adjustment. When encountering uncrushable objects, the system can automatically increase the roll gap. After the object is discharged, the gap automatically resets – preventing machine stalling and equipment damage.
Stable operation with low noise. Dual‑roller synchronous drive technology ensures balanced distribution of crushing force – low vibration and low noise. Low‑speed squeeze crushing mode results in low noise and low energy consumption.
Gaofu's anti‑sticking and anti‑blockage salt double roller crusher is used in the following salt production applications:
Crushing wet salt after centrifugal dewatering. Reducing wet salt (with high moisture content) from the centrifuge to the particle size suitable for drying or screening. The anti‑sticking and anti‑blockage design ensures wet salt does not stick to rollers or block the machine during crushing – continuous and stable operation.
Breaking sea salt lumps. Large lumps formed by sea salt during storage due to moisture absorption are effectively broken by double‑roller compression and shearing – restoring uniform particle state.
Processing reclaimed refined salt. Sticky materials such as reclaimed salt and floor salt generated on refined salt production lines are processed through the anti‑sticking and anti‑blockage double roller crusher – achieving material recovery and reuse.
Seamless integration with salt production lines. The equipment can be paired with a vibrating feeder for uniform feeding – operating in coordination with upstream and downstream equipment to achieve continuous operation from moist salt crushing to subsequent processes.
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.
