What is rock wool made of?

Rock Wool usually diabase or basalt, which are forms of volcanic rock, are used to make rock wool. The following steps are involved in the manufacturing process:

1. Melting: The rocks are heated to a temperature of 2,912 degrees Fahrenheit, or about 1,600 degrees Celsius, until they melt.

2. Spinning: To produce fine fibers, the molten rock is subsequently spun or extruded through spinnerets. Melted rock is used in place of sugar in this method, which is similar to making cotton candy.

3. Binding: To aid in the fibers' adhesion and the formation of a cohesive mat or blanket, binders or additives may occasionally be utilized. Depending on the producer and product, these binders can be different and are frequently organic.

4. Processing: Depending on the intended use, the fibers are subsequently processed into rolls, batts, boards, or loose-fill material.

The finished product, rock wool insulation, is renowned for its capacity to absorb sound, resist fire, and provide thermal insulation. In addition to its many uses in horticulture for hydroponic growing media, it is a common building insulator in the construction industry. Rock wool is an insulating material that is relatively environmentally friendly due to its recyclability and use of natural rocks.