Inorganic Chemicals- Pyrite-related Products
Product Overview
Industrial Pyrite, also known as iron pyrite (FeS2), is a sulfur-bearing mineral material used in selected heavy industrial applications. Depending on its chemical composition, particle size, impurity profile, and application requirements, it is supplied as lump material, graded granules, or precision-milled powder.
Pyrite products are evaluated by industrial buyers based on their intended use and material specifications. Key selection factors include FeS2 content, total sulfur, total iron, moisture, trace impurities, and particle size distribution.
Chemical Composition: FeS2 content and auxiliary parameters are tailored to specific industrial grades and verified through laboratory testing.
Controlled Particle Size Distribution (PSD): Available in lump sizes, graded granules, and customized powder distributions to match mechanical processing requirements.
Trace Impurity Management: Gangue minerals, free iron, and heavy metal elements are controlled using dedicated beneficiation and magnetic separation lines.
Moisture Stabilization: Thermal drying maintains moisture levels within tight commercial tolerances to prevent caking and ensure smooth automated feeding.
Batch Consistency: Standardized sampling protocols across production shifts maintain stable physical and chemical performance for long-term supply agreements.
Applications
Abrasives and Grinding Wheels
Selected pyrite grades are utilized as active mineral fillers in resin-bonded cutting and grinding wheel formulations. Active sulfur is released during high-speed grinding to prevent workpiece thermal damage and reduce friction.
Metallurgy and Foundry
Functions as a reliable sulfur-bearing addition in iron and steel casting processes to control metallurgical microstructures and improve machinability.
Friction Materials
Incorporated into heavy-duty automotive and industrial brake pads to stabilize friction coefficients and regulate thermal wear across operating temperature ranges.
Technical Specifications
|
Parameter |
Standard Grade (Typical) |
High-Purity Grade (Typical) |
Test Method / Requirement |
|
Chemical Formula |
FeS2 (Iron Disulfide) |
FeS2 (Iron Disulfide) |
Stoichiometric Standard |
|
FeS2 Content |
>= 90.0% |
>= 98.0% |
Iodometric Titration / XRD |
|
Total Sulfur (S) |
>= 46.0% |
>= 51.5% |
Combustion-Iodometric |
|
Total Iron (Fe) |
>= 40.0% |
>= 45.0% |
EDTA Titration |
|
Moisture (H2O) |
<= 0.5% |
<= 0.2% |
Gravimetric Analysis (105 deg C) |
|
Arsenic (As) |
<= 0.08% |
<= 0.03% |
ICP-OES |
|
Lead (Pb) |
<= 0.08% |
<= 0.03% |
ICP-OES |
|
Particle Size |
Custom Mesh / Granules |
Custom Micro-fine PSD |
Sieve Analysis / Laser Diffraction |
|
Packaging |
Multi-wall paper bags / FIBC |
Moisture-barrier FIBC / Drums |
Agreed Export Specification |
Manufacturing & Quality Control
The processing route for industrial pyrite follows structured production stages tailored to the requirements of each grade:
Raw Material Inspection: Incoming mineral stones are assessed against chemical composition, physical properties, and impurity criteria.
Crushing and Size Reduction: Lump material is processed into required size fractions using heavy-duty crushing equipment.
Milling and Classification: Powder grades are reduced and classified using closed-circuit air mills to achieve exact particle cut-offs.
Mineral Separation: Beneficiation, optical sorting, or magnetic separation is applied to eliminate silicate gangue and free iron.
Quality Testing: Parameters including chemical assay, moisture, and particle size distribution are verified via internal laboratory testing.
Final Inspection and Packaging: Materials are checked against agreed acceptance criteria prior to sealing and container loading.
Customization & OEM Services
Product parameters are adjusted according to buyer applications and purchasing specifications:
Particle Size Customization
Milling to specific top-cut targets (such as D90 or custom mesh fractions).
Documentation & OEM Support
Customized labeling, technical dossiers, and recurring supply agreement support.
Packaging Options
Multi-wall paper bags with PE inner liners, 1000 kg bulk super sacks (FIBC), or specialized industrial packaging.
Chemical Adjustments
Tailoring FeS2, sulfur, iron, and impurity thresholds to meet strict industrial formulation limits.
Related Products & Materials
Crushed Pyrite Lump: Graded lump fractions for direct furnace or foundry additions.
Other Pyrite Grades: Alternative chemical specifications and particle size distributions.
Micronized Pyrite Powder: Ultra-fine powder grades for specialized reactive chemical and friction applications.
Iron Sulfide Materials: Related sulfur-iron materials assessed separately due to distinct chemical properties compared to FeS2.
Frequently Asked Questions
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