Magnesium Metal Lump is a high-purity, reactive alkaline earth metal utilized primarily as an alloying element, metallurgical deoxidizer, and desulfurizer. Produced via thermal reduction (Pidgeon process) or molten salt electrolysis, our magnesium lumps offer controlled surface cleanliness and low trace impurity profiles suitable for demanding metallurgical and chemical applications.
Key Features
High Purity Matrix: Standard production maintains >= 99.80% minimum magnesium content, minimizing unwanted intermetallic inclusions.
Controlled Particle Size: Uniform lump sizing (typically 10 mm - 100 mm) ensures consistent dissolution rates and predictable melt recovery.
Low Heavy Metal Impurities: Strictly monitored iron, nickel, and copper limits to prevent negative impacts on alloy corrosion resistance.
Clean Surface Condition: Processed to minimize oil residues, surface nitrides, and oxide skins.
Key Specifications
|
Parameter |
Standard Grade (Mg99.80) |
High-Purity Grade (Mg99.90) |
|
Magnesium (Mg) Content |
>= 99.80% |
>= 99.90% |
|
Standard Lump Size |
10 mm - 100 mm (Custom fractions available) |
10 mm - 100 mm |
|
Form |
Irregular chunks / broken ingots |
Irregular chunks / broken ingots |
|
Bulk Density |
Approx. 1.05 g/cm3 |
Approx. 1.05 g/cm3 |
Chemical Composition
Typical trace element limits (mass fraction, % max):
|
Iron (Fe) |
<= 0.035% |
|
Silicon (Si) |
<= 0.02% |
|
Copper (Cu) |
<= 0.01% |
|
Nickel (Ni) |
<= 0.001% |
|
Aluminum (Al) |
<= 0.01% |
|
Manganese (Mn) |
<= 0.03% |
Applications
Aluminum Alloying: Primary additive for Al-Mg series alloys (5xxx series) used in marine structures, automotive body panels, and aerospace components.
Steelmaking & Foundry: Desulfurization agent in hot metal pretreatment and nodularizer/inoculant carrier in ductile iron casting.
Reductant Agent: Used in the production of titanium, zirconium, hafnium, and beryllium via metallothermic reduction.
Cathodic Protection: Raw material for sacrificial anode casting to protect pipelines and marine vessels from galvanic corrosion.
Manufacturing & Quality Control
Our production utilizes vertical retort vacuum reduction furnaces paired with precise condensation control.
Trace Element Testing
Every heat is analyzed via Spark Emission Spectrometry to verify individual impurity levels before breaking and sizing.
Physical Screening
Multi-deck vibrating screens remove undersized fines and excessive dust, ensuring precise sizing compliance.
Oxide Minimization
Controlled atmospheric handling post-reduction reduces surface oxidation and moisture absorption.
Packaging & Shipping
Magnesium metal is classified as a hazardous material (Flammable Solid, Class 4.1, UN 1869).
Standard Packaging: 250 kg or 1 MT steel drums fitted with argon/nitrogen backfill or sealed moisture-barrier liners.
Storage Requirement: Store in a dry, cool, well-ventilated, dedicated warehouse away from water sources, acids, and oxidizing agents.
Logistics Compliance: Fully certified for international sea and air freight hazardous cargo handling, including UN-rated packaging and mandatory Dangerous Goods (DG) documentation.
Documentation
Each order ships with a complete technical documentation package:
Certificate of Analysis (CoA) per heat/batch.
Material Safety Data Sheet (MSDS / SDS).
Packing List and Commercial Invoice.
Certificate of Origin (Form E, CO, etc., upon request).
MOQ & Lead Time
|
Minimum Order Quantity (MOQ) |
1 Metric Ton (Trial orders of 500 kg negotiable for qualified industrial evaluations). |
|
Production Lead Time |
7 to 15 business days for standard inventory grades. |
|
Shipping Terms |
FOB, CFR, or CIF via major export ports (Tianjin/Shanghai). |
FAQ
Q: How do you prevent surface oxidation during ocean transit?
A: Lumps are packed in hermetically sealed steel drums with desiccant pouches or inert gas purging to eliminate moisture contact.
Q: Can you supply custom sizing fractions?
A: Yes. Crushing and mechanical screening lines allow us to supply tailored size distributions based on specific furnace charging requirements.
Q: What is the maximum allowable nickel content in your high-purity grade?
A: Our high-purity grade restricts nickel to a maximum of 0.001% to protect aluminum alloy corrosion resistance in marine environments.
Request a Quote
To receive a formal commercial quotation, please specify the following parameters in your inquiry:
Required Grade (Mg >= 99.80% or Mg >= 99.90%).
Particle Size Fraction (e.g., 10 - 100 mm).
Total Quantity and Destination Port (CIF/FOB).
Target Delivery Schedule.
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