Product Catalog — By-Products & Raw Materials

Boulder Slag

Robust blast furnace slag processed via a semi-direct method and wet quenching at Pakistan Steel granulation plant.

Product Overview

Boulder Slag is produced by Pakistan Steel using a semi-direct method in which slag formed from the blast furnaces is processed at a slag granulation plant via a wet quenching process.

Chemical Analysis

Compound / Element	Composition Limits
Calcium Oxide	36 - 40%
Silica	36 - 39%
Alumina	14 - 16%
Magnesium Oxide	9% max
Manganese Oxide	1.3% max
Titanium Oxide	0.881% max
Iron Oxide	0.5% max
Sulphur	1.5% max