MineralTech BLACKMAX Coal Slag™

MineralTech BLACKMAX Premium Coal Slag™ is a low free silica; chemically inert mineral abrasive commonly employed as an abrasive blasting media, and is also used for roofing granules by manufacturers of roofing shingles. This abrasive is dark black in color, with angular particles and a hardness of 7.0 on the Mohs Hardness Scale. The bulk density is 90-95 lbs. per cubic foot.

MineralTech BLACKMAX Premium Coal Slag™ is a high-quality grade abrasive that is clean, fast cutting, safe (Less Than 1% Free Silica), and produced using the highest quality control standards. The chemical and gradation parameters are continuously monitored by authorized analytical laboratories.

This product is available in bulk pneumatic tankers, 4000 lb. bulk bags, 50 lb. & 100 lb. paper sacks.

MineralTech BLACKMAX Coal Slag™ Application Chart

MineralTech BLACKMAX Premium Coal Slag™ delivers and ultra-low dusting abrasive blast when employed, with high production rates, and is less than 1% free silica.

MineralTech Premium Coal Slag™ Technical Data

Characteristics

• Color - Black
• Bulk Density - 95-100 Lbs. Per Cubic Ft.
• Hardness - 6-5 – 7.0 Mohs Harness
• Grain Shape - Angular
• Specific Gravity - 2.658
• Solubility - Insoluble
• Moisture - <0.20%
• Melting Point - >2000 F
• Free Silica - Less Than 1%

Typical Chemical Analysis

• Silicon Dioxide - SiO2 - 45.5%
• Aluminum Oxide - Al2O3 - 22.5%
• Iron Oxide - Fe2O3 - 19.0%
• Calcium Oxide - CaO - 5.5%
• Magnesium Oxide - MgO - 1.0%
• Potassium Oxide - K2O - 1.0%
• Titanium Oxide - TiO2 - 1.0%
• Loss On Ignition - LOI - 3.0%