Explore our certified rare earth NdFeB permanent magnetic structures engineered for heavy duty mining separators.
Welcome to Zhejiang Laysun Magnetics Ltd., your trusted partner in the world of advanced magnetic solutions. Since our inception in 1999, we have grown to become a national high-tech leader in manufacturing rare earth magnets, a testament to our unwavering commitment to excellence in this niche field.
Focusing on high-performance rare earth NdFeB magnets, laysun Magnetics has specialized expertise, making it a go-to company for customers seeking these specific magnetic solutions. Our magnets are integral to various sectors, including electric vehicles, industrial motors, computers, consumer electronics, and massive mineral separation plants worldwide.
In modern mining and mineral processing operations, separating valuable ferromagnetic minerals from non-magnetic gangue is a core thermodynamic and mechanical challenge. Historically, electromagnets dominated the mineral beneficiation landscape. However, due to their immense electricity consumption, risk of overheating, and extensive maintenance shutdowns, the mining sector has decisively pivoted toward permanent magnetic separation systems.
At the center of this technological paradigm shift is the Neodymium-Iron-Boron (NdFeB) rare earth magnet. NdFeB alloys provide the highest energy product ($BH_{max}$) of any commercially available magnetic material. This translates to an incredibly high magnetic field gradient and coercive force, allowing separators to capture even weakly magnetic particles (such as hematite, limonite, and iron-bearing silicates) under rapid volumetric flow rates.
When procurement managers search for "cheap magnetic separation in mining quotes," they face a market filled with highly variable pricing models. In heavy mining processing plants, a low-cost upfront quote that compromises on raw material grades leads to rapid demagnetization, poor wear resistance, and eventually catastrophic mill down-time. True value lies in partnering with a vertically integrated magnetic separation factory that leverages structural scale to provide cost-effective quotes while maintaining structural integrity.
How does Zhejiang Laysun Magnetics Ltd. achieve highly competitive pricing without compromising the technical characteristics of our NdFeB magnets? Our 100,000 square meter factory in Sichuan offers structural cost advantages:
Founded at the turn of the millennium, Zhejiang Laysun Magnetics Ltd. has evolved from a regional manufacturer to an industry pacesetter. Our state-of-the-art facility features advanced production systems controlled by automated feedback loops to ensure zero-defect output.
At Laysun Magnetics, our ethos is built on Quality, Credibility, Technology, and Innovation. These pillars guide us in developing custom magnetic separations, motor magnets, and heavy-duty lifters that reliably exceed client requirements.
Our goal is to remain a primary source of innovation and quality in the permanent magnet sector, powering modern industrial applications and green energy systems worldwide with efficient, durable magnetic solutions.
Mining operations present some of the most challenging environments for permanent magnets. Equipment is constantly subjected to abrasive mineral slurries, high moisture, mechanical impacts, and high operating temperatures. Standard commercial neodymium magnets will degrade rapidly under these conditions. Because of this, our engineering team implements specialized protective systems for all industrial-grade mining magnets.
To prevent oxidation of the iron-rich NdFeB alloy, Laysun provides a range of industrial coatings. For typical dry drum applications, we supply multi-layer Nickel-Copper-Nickel (Ni-Cu-Ni) plating. For wet separation plants where components are exposed to acidic tailing slurries, we specialize in high-durability epoxy finishes, Teflon, or stainless steel hermetic canning. This prevents moisture from reaching the magnetic core, eliminating the risk of structural failure.
Continuous mechanical processing generates frictional heat, often raising internal temperatures in separator drums above 120°C. Standard N-grade NdFeB magnets begin demagnetizing at 80°C. To address this, Laysun manufactures magnets in M, H, SH, UH, EH, and AH grades, which are rated to operate reliably at temperatures up to 220°C. By adjusting the dysprosium content in our raw formulation, we ensure long-term magnetic field stability over years of continuous operation.
Our quality control processes ensure that every batch of sintered neodymium blocks, disc magnets, and custom assemblies meets strict international standards. Laysun's facilities and management systems are fully certified across a range of regulatory frameworks, ensuring reliable performance in demanding environments.
Our plant operates under certified management standards to ensure compliance for international trade. These include API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, and IATF 16949 (TS). These frameworks cover all aspects of our business, from raw material procurement to product shipping and final verification.
Every shipment is accompanied by detailed testing reports detailing flux density, magnetic hysteresis curves, coercivity, and coating thickness, giving procurement teams complete traceability.
While our production is based in Hangzhou and our primary manufacturing plant spans 100,000 square meters in Suining, Sichuan, Laysun has built a global distribution network. We provide specialized logistics support, customs documentation, and regional engineering services to assist mining clients across North America, South America, Australia, and Africa.
Under normal operating conditions and temperature ranges (below the rated Curie temperature of the specific grade), sintered NdFeB magnets lose less than 1% of their magnetic flux density over a period of 10 years. However, excessive heat, physical impacts, or chemical corrosion of the plating can accelerate this loss. Regular maintenance and selecting the correct temperature grade (e.g., SH or UH) are key to long service life.
In wet separation processes (such as processing magnetic iron ore slurries), standard nickel plating can degrade over time. We recommend encapsulating the magnet assembly in a 304 or 316-grade stainless steel shell, or applying a heavy-duty resin/epoxy layer. This hermetically seals the NdFeB alloy away from moisture and corrosive processing fluids.
Yes. We specialize in custom manufacturing NdFeB block magnets, arc segments, and multi-pole assemblies based on customer drawings. We work with you to optimize magnet placement (such as Halbach arrays or alternating radial/axial layouts) to maximize flux density and gradient at the drum surface.
With our annual capacity of 5,000 tons, typical production times range from 3 to 5 weeks for custom sintered NdFeB orders, depending on the complexity of the shape and plating requirements. Standard stock shapes can be shipped faster.
Explore our technical assemblies, including pot magnets, high-capacity lifters, and customized block configurations.
For inquiries about our products, custom sizing, or bulk magnetic separation quotes, please enter your email. Our team of engineering specialists will contact you within 24 hours.
Laysun Magnetics