Prices are necessarily low to allow the material to compete with natural aggregates. Granulated slag accounted for almost 80% of the value of total blast furnace slag sales.
Modern uses. Ground granulated slag is often used in concrete in combination with Portland cement as part of a blended cement. Ground granulated slag reacts with water to produce cementitious properties.
While most of the furnace slag is recycled for use as an aggregate, excess steel slag from other operations (raker, ladle, clean out, or pit slag) is usually sent to landfills for disposal.
In the construction world, most materials are measured in cubic yards. Multiply the length (L), in feet, by the width (W), in feet, by the height (H), in feet, and divide by 27. This will tell you how many cubic yards of crushed stone you need.
Iron meteorites are magnetic, while most naturally-occurring rocks in Kentucky, and silica slag are not. Some people think this test proves a specimen is a meteor but this is not true. Iron ore and iron slag can also both be magnetic.