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Product Details

Blasting Garnet

SEPPE Garnet is an integrated garnet mining, processing, shipping and distribution organisation providing the best quality industrial garnet for the surface preparation and waterjet cutting industries.
Availability:
Quantity:
  • 30/60

  • SEPPE GARNET

  • 25132000

Blasting Garnet 

High-performance natural garnet abrasive for sandblasting, surface preparation, rust removal, and industrial cleaning applications.


★ Fast Rust & Coating Removal
◆Low Dust & Silica‑free
◆Reusable & High Density
ISO 9001:2015 Certified  ·  Exported to 40+ Countries

What Is Blasting Garnet?

▸ Garnet sand is a common chemically inert nonmetallic mineral in the natural environment. As a natural alluvial abrasive, its hardness, high specific gravity, chemical stability, and durability make it the ideal blasting media on the market.

▸ It is non-toxic, produces low dust, and causes no pollution — widely used for hardware sand blasting and surface cleaning. As one of the leading garnet abrasive suppliers in north China, SEPPE garnet is thoroughly tested by QC with complete particle size analysis and quality assurance.

Application & Grading

▸ 20/40 Mesh (Coarse): Heavy-duty rust removal, ship hull cleaning, and thick coating stripping.

▸ 30/60 Mesh (Medium): The most versatile grade for general steel surface preparation and maintenance.

▸ 80 Mesh (Fine): Precise blasting for aluminum, stainless steel, and high-quality waterjet cutting.

Ship Hull Blasting     Steel Structure Blasting

Why Is Garnet Used for Blasting?

▸ Garnet abrasive sand has the greatest potential and is the most widely used in the blasting field. It serves industries closely related to production, such as ship hulls, bridges, pipes, and steel structure sandblasting treatment. It delivers large blasting area per unit time, less sand consumption, and lower overall blasting costs.

▸ With hardness up to 8 Mohs and long service life, garnet produces an ideal angular rough surface on metal, increasing the surface area and improving the bonding force of the interface. This significantly enhances the adhesion of corrosion protection coatings to the metal surface.

▸ High density provides stronger impact force for better metal surface cleaning. Sharp angular edges with reasonable particle size distribution produce less dust and can effectively reach deep into holes and uneven parts to completely remove scale, rust, soluble salts, and other contaminants.      

Production Process

▸ Raw alluvial garnet → Washing & Desliming → Gravity Separation → Drying → Magnetic Separation → Precision Screening → Final Inspection & Packaging

▸ Each production stage removes impurities and excess fines, producing consistently sharp grains with tight size control for reliable abrasive flow.

SEPPE Factory Processing & Classification

Laboratory Testing & Quality Control

▸ Particle size distribution testing per ASTM E11 — strict control of 20/40, 30/60, and 80 mesh grades.

▸ Bulk density and specific gravity verification on each production batch.

▸ Moisture content below 0.5% to ensure free-flowing abrasive and prevent nozzle clogging.

▸ Salt/chloride content testing to prevent rust formation on blasted steel surfaces.

▸ Free silica and heavy metal analysis to meet HSE requirements. 

In-house laboratory for batch inspection and quality testing

Chemical Composition & Physical Properties

Chemical Specification
Al₂O₃ 17-25%
SiO₂ 34-40%
FeO+Fe₂O₃ 28-31%
MgO 5-8%
MnO 0-1%
TiO₂ 0-1%
CaO 1-2%
Physical Specification
Bulk Density 2.1-2.4 g/cm³
Specific Gravity 4.0-4.2 g/cm³
Hardness 7.5-8.0 Mohs
Chloride Content ≤ 25 ppm (Low Salt)

SEPPE Garnet vs Typical Slag Abrasive

Property SEPPE Garnet Typical Slag
Dust Level Low Higher
Recycle Rate 3-5 Times 1-2 Times
Free Silica <1% Often higher
Surface Profile Consistent Variable
Chloride Content ≤ 25 ppm Often higher

Packaging & Delivery

▸ 25 kg PP woven bags and 25 kg paper bags available

▸ 1 MT jumbo bags for bulk supply

▸ OEM private label and custom packaging supported

25kg PP Woven Bag    25kg Paper Bag    1MT Jumbo Bag  

▸ Reliable container shipment to all major ports worldwide

          

FAQ

❓ How many times can blasting garnet be reused?

▸ Typically 3‑5 times depending on blasting pressure and material, thanks to its high toughness and low friability.

❓ Does blasting garnet contain free silica?

▸ No. Our garnet has less than 1% free silica, making it a much safer alternative to silica sand blasting.

❓ What mesh size should I choose for steel surface preparation?

▸ 30/60 mesh is the most versatile grade for general steel blasting. Use 20/40 for heavy rust removal and 80 mesh for fine finishing work.

❓ Is garnet blasting environmentally friendly?

▸ Yes. Garnet is a natural inert mineral, non-toxic, produces low dust, and contains no hazardous substances.

❓ Can I get samples for testing?

▸ Yes. Free samples and technical documents (TDS/SDS) are available upon request.

Need a Quote or Free Sample?

Contact SEPPE for product specifications, OEM packaging, bulk pricing, and technical support.

Request a Quote


⚙️ MANUFACTURING PROCESS

01

RAW GARNET ORE

Carefully selected garnet ore with stable mineral composition for industrial abrasive applications.

02

CRUSHING & SCREENING

Primary crushing and screening to achieve uniform feed size for efficient separation.

03

MULTI‑STAGE MAGNETIC SEPARATION

Multi‑stage magnetic separation removes ferrous impurities and enhances grain purity for stable blasting performance.

04

PRECISION SCREENING

Advanced screening technology ensures tight particle size distribution and consistent product quality.

05

WASHING & DUST REMOVAL

Washing processes remove ultra‑fine particles and soluble salts, reducing dust and improving cleaning efficiency.

06

LABORATORY INSPECTION

Strict laboratory testing guarantees stable chemical composition and physical properties in every batch.

07

PACKING & GLOBAL DELIVERY

Professional packing and efficient logistics ensure reliable supply worldwide.

⚙️ QUALITY CONTROL SYSTEM

1

RAW ORE INSPECTION

Mineral composition verified before mining. Hardness, purity, and chemical content pre‑screened at source for consistent raw material quality.

2

PARTICLE SIZE MONITORING

Real‑time feed size uniformity checks during crushing and screening. Crushing ratio controlled to eliminate oversize and undersize particles.

3

MAGNETIC PURITY VERIFICATION

Magnetic content tested before and after multi‑stage separation. Ferrous impurity levels verified to ensure stable blasting and cutting performance.

4

GRAIN SIZE DISTRIBUTION

Sieve analysis per ASTM standards ensures tight mesh size tolerance. Granularity consistency verified for every production batch.

5

CLEANLINESS TESTING

Conductivity measurement verifies removal of soluble salts. Dust content quantified to ensure free‑flowing abrasive with minimal airborne particles.

6

FINAL BATCH CERTIFICATION

Full physical and chemical analysis — hardness, bulk density, specific gravity, and chloride content tested. Batch traceability documented from ore source to shipping.

7

PRE‑SHIPMENT INSPECTION

Package integrity, quantity, and specification confirmed before loading. Container condition checked to ensure product arrives in perfect quality worldwide.