Over 10,000+ customers' choice, Focus on screening industry 40+ years
In the salt industry, crushing is a critical link that connects upstream and downstream processes – it follows the drying of salt lumps and leads to screening, packaging and even further processing. The efficiency of crushing directly determines product yield, energy costs and final product quality.
However, salt crushing, while seemingly straightforward, faces two practical challenges: how to make salt lumps finer without generating excessive dust? And how to keep the equipment running stably under the corrosive and abrasive conditions of salt?
To address these two core pain points, Gaofu Machinery developed its wear‑resistant Double Roller Crusher for salt. It achieves precision crushing mainly through compression‑shear technology, while its wear‑ and corrosion‑resistant design ensures long‑term, stable operation. Covering medium and fine crushing needs for both industrial salt and table salt lumps, it provides salt producers with a professional equipment solution that has proven itself in real‑world applications.
1. The Essential Difference Between Impact and Compression
Crushing equipment on the market generally follows two technical paths:
Impact crushing (hammer crusher, impact crusher): Uses high‑speed rotating hammers to strike the material, breaking it by impact force.
Compression crushing (double roller crusher): Uses two counter‑rotating rolls to continuously compress and shear the material, causing it to crack along its natural fissures.
For salt, a brittle crystalline material, impact crushing tends to cause “over‑crushing” – the high‑speed blows not only break the salt lumps but also shatter existing salt crystals, generating a large amount of very fine powder. These fines not only reduce product yield but also cause screen blinding in subsequent screening and dust problems in packing areas, leading to a cascade of issues.
2. Gentle Crushing by "Static Pressure + Shear"
The Gaofu wear‑resistant double roller crusher for salt works on the double‑roll compression principle: two high‑strength wear‑resistant rolls rotate toward each other. Salt lumps enter the V‑shaped crushing chamber between the rolls and are subjected to combined compressive and shear forces, causing them to crack naturally along their internal fissures under steady, controlled pressure. This crushing mode – mainly shear with some compression – is relatively gentle. It generates significantly fewer fines than impact crushers, and the finished particles have a regular shape with fewer sharp edges, creating good conditions for downstream screening.
1. The Dual Challenge Salt Poses to Equipment
Salt challenges crushing equipment on both physical and chemical levels:
Physical abrasion: Although salt lumps are not extremely hard, the continuous grinding action of crystalline particles against the roll surface during crushing causes noticeable wear. Ordinary carbon steel roll surfaces will develop uneven wear after long operation, affecting crushing accuracy.
Chemical corrosion: The chloride ions in salt are corrosive. Ordinary carbon steel equipment operating in a moist salt environment will rust and corrode, and may even contaminate the product with rust particles – an unacceptable quality risk for table salt production.
2. Key Features of the Gaofu Wear‑Resistant Version
To address the above issues, the Gaofu wear‑resistant double roller crusher for salt incorporates several targeted enhancements:
Wear‑resistant alloy roll surface: The crushing rolls are made of high‑chromium manganese steel or other wear‑resistant alloys, offering high hardness and excellent abrasion resistance. Under continuous salt crushing conditions, roll life is significantly longer than that of ordinary carbon steel rolls.
Corrosion‑resistant treatment: Key parts such as the feed inlet, inner housing wall and discharge channel are made of corrosion‑resistant materials or given protective surface treatments to effectively resist chloride ion attack.
Sealed construction: The fully sealed design prevents moisture and salt dust from penetrating the bearings and drive system, ensuring stable operation in humid environments.
Food‑grade option: For table salt production, material‑contact parts can be optionally made of 304 stainless steel, guaranteeing a pure, contaminant‑free crushing process.
The term "wear‑resistant version" reflects improvements in material, process and structure, all aimed at providing lower long‑term operating costs and higher operational stability for the user.
1. Controllable Particle Size with Flexible Adjustment
The discharge particle size of a double roller crusher is determined by the gap between the two rolls. The Gaofu crusher is equipped with a simple roll gap adjustment mechanism, allowing flexible changes to meet production needs – a larger gap gives coarser output, a smaller gap gives finer output. Whether you need 2‑10 mm particles for industrial salt or a medium size for table salt pre‑treatment, the adjustment is easy and does not require changing parts or tuning other parameters.
2. Low Over‑Crushing Rate, High Product Yield
The over‑crushing rate is the proportion of very fine powder generated during crushing. A high over‑crushing rate means more raw material is wasted and the screening system is overloaded. The Gaofu double roller crusher uses compression crushing: material is pressed between the two rolls and cracks along its internal natural fissures, generating significantly fewer fines than impact crushers. For food‑grade or high‑value salt products, a low over‑crushing rate directly translates into higher yield and better economic benefit.
3. Wear‑ and Corrosion‑Resistant, Controllable Whole‑Life Cost
The wear‑resistant roll surface extends replacement intervals and reduces downtime for maintenance.
Corrosion‑resistant treatment ensures the equipment does not rust or degrade in a salty, humid environment.
The simple design with few wear points means daily maintenance mainly involves checking roll surface wear and cleaning accumulated salt.
The total cost of ownership over the equipment's life is well controlled, delivering outstanding long‑term benefits.
4. Fully Enclosed Structure – Environmentally Friendly and Safe
The Gaofu double roller crusher has a fully enclosed structure. Crushing takes place inside a sealed chamber, so dust escape is very low. For table salt producers, the enclosed structure effectively prevents foreign matter from contaminating the product. For industrial salt producers, the dust concentration in the workshop is reduced, meeting increasingly strict environmental requirements.
1. Quality Value – Consistent and Accurate Crushed Particle Size
The stability of crushed particle size directly determines subsequent screening efficiency and final product quality. The Gaofu double roller crusher, with its precise roll gap adjustment, ensures that every batch has a stable discharge particle size, providing reliable feed for downstream processes.
2. Cost Value – Wear & Corrosion Resistance Lower Total Operating Costs
Longer service life means fewer spare parts purchases. A lower over‑crushing rate means higher raw material utilisation. A simple design means fewer maintenance man‑hours. All three together deliver significant long‑term economic benefits.
3. Safety & Environmental Value – Fully Enclosed Green Production
Dust control is a common challenge in powder processing workshops. The fully enclosed structure of the Gaofu double roller crusher effectively prevents dust escape. When combined with an on‑site dust extraction system, it creates a dust‑free crushing line, improves the working environment and reduces occupational health risks.
4. Service Value – Over 40 Years of Professional Expertise
Since its founding in the 1980s, Gaofu Machinery has grown into a "National Specialised and Sophisticated 'Little Giant' Enterprise" and a "National Green Factory," holding more than 500 granted patents and exporting products to over 100 countries and regions. In the salt processing field, Gaofu offers complete, integrated solutions covering crushing, screening and conveying – creating value for customers through one‑stop service.
Precision crushing of industrial salt and table salt requires not just the ability to "make salt lumps smaller," but also the long‑term stability to protect salt crystals during crushing, control fines, and resist corrosion and wear. The Gaofu wear‑resistant double roller crusher for salt is designed on exactly this philosophy – achieving precise crushing with compression technology and ensuring long service life with wear‑ and corrosion‑resistant materials.
If you are looking for a reliable, accurate crusher for salt lumps, please contact Gaofu Machinery. We will provide a professional site evaluation and customised recommendations based on your material characteristics, capacity requirements and workshop conditions.
Client Testimonials
Shanghai Power Equipment Research Institute, Datang International, China Energy Engineering Group (CEEC), China Huaneng Group, PowerChina, Harbin Electric Corporation (HE), Yanjing Beer, Shanghai Electric, Sinochem Group, Chinalco Group, Sinopec, WISDRI, TBEA, Luxi Chemical Group, Kingenta International, China XLX Fertilizer, Tsingshan Holding Group, Lanhua Sci-Tech, United Laboratories, Hisun Pharmaceutical, Nanguo Hongdou Group, TISCO, Lee & Man Paper, Keda Clean Energy, Weihai Thermal Power, Jizhong Energy, Hainengda Heating, ZB Group (Zhengzhou Boiler), Yuyuan Boiler, Zhenshi Holding Group, Huating Coal Industry, Xinquanlin Holding, Aeolus Tyre, Fufeng Group, Qiangwei Paper, Shifeng Group, Longfeng Leather, Fumiao Technology, Hengbang Additives, Jialong New Materials, Yinlu Chemical Fiber, Zhongjin Petrochemical, Zhongda Group, Shankuang Machinery, China Qinghua Group, Shengtong Sugar, Xinlong Group, Sifang Boiler, Henan Energy and Chemical Industry Group, Yihai Kerry, Ansteel Group, Fengxi Fertilizer, Linglong Tire, Jincheng Coal Industry, Xinzheng Coal and Electricity, Jinglong Holding.
About Gaofu
Xinxiang Gaofu Machinery Co., Ltd. traces its roots back to the 1980s. After more than 40 years of development, the company has been recognized as a "National-Level Specialized and Sophisticated 'Little Giant' Enterprise", a "National Green Factory", a "National High-tech Enterprise", a "National Intellectual Property Advantage Enterprise", and the "President Unit of the Vibration Association". It also serves as the "Henan Provincial Industrial Design Center", the "Henan Provincial Engineering Technology Research Center for Intelligent Online Screening Systems", and the "Xinxiang Fine Screening Engineering Technology Research Center". Gaofu has been granted over 500 invention, utility model, and design patents, holds a "Science and Technology Achievement Award from the Ministry of Industry and Information Technology", and has participated in drafting four national standards.
Gaofu's product range covers multiple series and hundreds of varieties, including vibrating screening equipment, conveying equipment, coal crushing equipment, filtration equipment, and automated material handling systems. Its main products include coal crushers, toothed roll crushers, four-toothed roll crushers, double-toothed roll crushers, integrated screening and crushing machines, coal-specific crushers, roller screens, cross screens, vibrating screens, screening machines, and filters. These products are widely used in coal crushing applications for circulating fluidized bed boilers, pulverized coal boilers, gasifiers, and coal-water slurry boilers in thermal power plants and coal chemical enterprises, earning the trust and positive feedback of over 10,000 customers worldwide.
Gaofu products are not only popular throughout Greater China but are also exported to more than 100 countries and regions, including Russia, Canada, the United States, New Zealand, Japan, Brazil, and South Africa. The company fulfills its mission — "Enhancing material quality and performance while meeting customer needs" — and is committed to a win-win partnership with its customers. To date, Gaofu has become an approved supplier to many Fortune Global 500 companies, including CNPC, Sinopec, Sinochem Group, China Resources Group, Sinopharm Group, COFCO Group, China National Building Material Group, China Aerospace, and Jinchuan Group.
The Gaofu toothed roll crusher has won the Science and Technology Achievement Award from the Ministry of Industry and Information Technology (Registration No. 3392015Y0016) and has passed the Scientific and Technological Achievement Appraisal (Henan Mechanical Engineering Society Appraisal Letter No. [2022] 24).
