How is rock wool produced?

This thing looks like an old cotton quilt that has been covered for over 30 years. It is actually rock wool, although its texture is as soft as cotton, it is made of stone.

Mineral Wool Board, Insulation Rock Wool Board Price

Imagine in situ stone analysis for your stone conservation project! Quick, not- invasive, time & money saving!

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Stone wool - IMA

CHINA IKING INDUSTRIAL GROUP CO., LTD

Stone Wool - Rock Wool - Thermal Insulation

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Rock Mineral Wool Vs Glass Mineral Wool

Three Reasons You Should Consider Rockwool Insulation