Product Category

　　 Product Highlights
　　1. This patented product, the result of 18 months of R&D, attaches directly to the vessel using magnetic force; over 90% of installations require no bolts, and a single operator can perform quick replacements, significantly reducing maintenance time.
　　2. The magnetic field adsorbs fragmented steel balls and ferromagnetic mineral fines, rapidly forming a 20–30 mm self‑generated wear‑resistant lining that isolates the shell from media impact, slurry erosion, and electrochemical corrosion, thereby preventing slurry leakage from the cylinder.
　　3. Weighing significantly less than high-manganese steel liners, it reduces equipment load and lowers power consumption, making it the preferred choice for energy savings, reduced consumption, and enhanced efficiency in fine grinding mills for iron ore.
　　 User Pain Points
　　Mill liners are critical wear parts in grinding operations. Traditional high-manganese steel liners face three major challenges in the secondary and tertiary grinding stages of iron ore processing: ① short service life, leading to frequent shutdowns and high replacement costs; ② heavy weight, increasing equipment load and energy consumption; ③ installation and removal rely on numerous bolts, and drilling the mill shell can cause slurry leakage, resulting in lengthy maintenance and high labor intensity.
　　 Solution
　　Our company’s metallic magnetic liners consist of a metal housing and permanent magnetic material. They are directly magnetically attached to the mill shell, eliminating the need for numerous bolts, preventing slurry leakage, and enabling rapid replacement. A self‑generated wear‑resistant layer 20–30 mm thick quickly forms on the liner surface, effectively shielding it from direct impact by the grinding media.
　　 I. Product Description
　　The metallic magnetic liner is a replacement for conventional manganese steel liners used in horizontal ball mills. It is an invention patented by our company and took 18 months to develop. Comprising a metal housing and permanent magnetic materials, it adheres directly to the mill shell via magnetic force. By arranging alternating N and S poles, it forms a curved, open magnetic circuit that captures crushed steel balls and ferromagnetic mineral fines, creating a protective layer. The product is hailed as a “liner that never wears out” and is the preferred choice for iron ore fine grinding mills seeking energy savings, reduced consumption, and improved efficiency.
　　 II. Product Features and Advantages
　　• Self‑generated wear‑resistant lining: The magnetic field attracts crushed steel balls and ferromagnetic mineral fines, rapidly forming a 20–30 mm protective layer that shields the liner from media impact, slurry erosion, and electrochemical corrosion, thereby preventing slurry leakage. Once the lining is established, media impacts no longer reach the liner body, enabling “wear‑based protection.”
　　• Boltless installation for easy maintenance: Over 90% of components are held in place by magnetic attraction, eliminating the need to drill holes in the vessel and preventing ore leakage. A single operator can perform quick replacements, significantly reducing maintenance time and lowering worker fatigue.
　　• Lightweight and energy‑saving: Weighing approximately two-thirds that of high‑manganese steel liners, it effectively reduces mill load and power consumption, delivering significant energy‑saving benefits.
　　• Compatible with a bimetallic upgrade option: For applications requiring enhanced wear resistance, you can select a bimetallic magnetic liner with a high-hardness wear-resistant insert cast into the working surface, further extending service life.
　　 III. Why Choose Us
　　• Focused on wear‑resistant castings for harsh operating conditions: Rooted in China, we specialize in the R&D and manufacturing of wear‑resistant castings for demanding applications in mining, power generation, and other severe environments. Take our metallic magnetic lining plates as an example: specifically optimized for the high‑wear, fine‑grinding stages of iron ore processing, this patented product underwent 18 months of development. Leveraging its intrinsic magnetic properties, it adheres directly to the mill shell, eliminating the need for bolts in over 90% of cases. A single operator can perform quick replacements, significantly reducing maintenance time and minimizing downtime‑related losses at the source.
　　• We let the test data speak for themselves, rather than merely talking about perfection: Casting processes are complex; we do not promise “zero defects,” but we do promise “zero excuses.” Each batch of metal magnetic liners undergoes a full inspection process—including magnetic flux testing, precise dimensional measurements, and hardness checks—to ensure that the magnetic field strength meets specifications and that the liners adhere tightly to the mill shell. Complete test reports are provided, demonstrating our commitment through data and action.
　　• Long-term partnerships—delivery is just the beginning: Our digital systems let you track production progress in real time, eliminating opaque operations; we respond immediately to quality concerns without delay; and every shipment includes a detailed test report for your quality records. We believe that a supplier’s attitude toward resolving issues truly reflects its value.
　　 IV. Production and Quality Assurance
　　• Premium Raw Materials: Carefully selected high-quality, rust-free, oil-free scrap steel and high-grade permanent magnetic materials ensure that the metal magnetic liner shell is made from pure materials with stable magnetic properties.
　　• Ultimate density: Ceramic sand combined with a large-diameter heating riser eliminates shrinkage porosity and cavities, ensuring a dense internal structure that provides stable support for the magnetic system and withstands continuous mill operation without cracking.
　　• Precision melting: Melted in a Fuji electric furnace from Japan, with real-time compositional verification via spectrometer to precisely control carbon and manganese levels, ensuring the casing’s work-hardening capability and compatibility with magnetic materials.
　　• Flawless casting: 850°C package baking combined with bottom pouring ensures no sand holes, a smooth liner working surface, and complete magnetic system encapsulation with no leakage risk.
　　• Strengthened metallography: 30-second rapid quenching produces a uniform austenitic microstructure, achieving “hard exterior, tough interior”—the shell surface undergoes impact hardening while the core retains high toughness, preventing fracture under steel ball impacts.
　　• Powerful shot blasting: cleans and hardens the surface, enhancing the wear resistance of the liner’s working face and ensuring the magnetic system’s surface remains clean and free of adhering material.
　　• Rigorous quality inspection: dimensional testing, magnetic flux testing, and magnetic particle inspection ensure proper adhesion between the liner and the cylinder, meet magnetic field strength standards, and confirm the shell is free of microcracks.
　　• Transparent Payment: Scan the code to track progress in real time, with end-to-end visibility from material input to shipment.
　　 V. Frequently Asked Questions (FAQ)
　　Q1: Which mills are metal magnetic liners suitable for?
　　This horizontal ball mill is suitable for processing magnetic minerals in the ferrous and non-ferrous metals industries, and is particularly well suited for secondary and tertiary fine grinding of iron ores.
　　Q2: Why can magnetic liners achieve “never wear out”?
　　The magnetic field of the liner attracts crushed steel balls and ferromagnetic mineral powder, forming a 20–30 mm protective layer that shields the liner body from media impact.
　　Q3: Are bolts required for installing magnetic liners?
　　Over 90% require no bolts and adhere directly to the cylinder body via their own magnetic force. During installation, no holes need to be drilled in the cylinder, preventing mineral leakage.
　　Q3: How long do magnetic liners last?
　　Typically, magnetic liners have a service life 2 to 5 times that of high-manganese steel liners; our company’s bimetallic‑structured liners can achieve a service life 6 to 10 times that of high-manganese steel liners.
　　Q4: What is the minimum order quantity?
　　Negotiable; bulk purchases qualify for discounted pricing.
　　Q5: What is the delivery time?
　　Custom orders based on your design take 45–60 days; expedited service is available upon negotiation for urgent needs.
　　Q6: What payment methods are supported?
　　We accept T/T (telegraphic transfer) and L/C (letter of credit). For first-time collaborations, we recommend T/T; specific terms are negotiable. Other phased payment arrangements can also be discussed.