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2024.01.10

How is rock wool processed and made?

Rock wool is a commonly used insulation material for buildings, usually using rocks as raw materials, such as basalt, serpentine, etc., which are then melted at high temperatures.

The processing and production of rock wool mainly includes the following steps:

 

1.Raw material preparation: choose suitable rock raw materials, such as basalt, serpentine, etc., and carry out crushing and screening to obtain the particle size suitable for production.

2.Melting: The crushed and sieved ore raw materials are put into the melting furnace and go through high temperature melting. The melting temperature and atmosphere can control the chemical composition of the rock wool and the morphology of the fibers.

3.Fibrillation: During the rock melting process, the molten liquid is ejected through a special spinneret technology and stretched into fibrous form by blowing air or centrifugal force. During this process, parameters such as the temperature of the molten liquid, the spinneret speed and the spinneret pressure are adjusted to control the diameter and length of the fibers.

4.Cooling and molding: The shape of the newly made inorganic cotton is not fixed, so it is necessary to take away the heat from the surface of the inorganic cotton with a high-speed blower to make it easier to be molded.

5.Technical treatment: High-efficiency water reducer and binder are added into the inorganic cotton to make it have the function of preventing water seepage and higher strength and hardness. Then high efficient binder is injected into the surface to make its shape more fixed.

6.Uniform distribution of cotton: The pressure of the inorganic cotton is repeatedly increased by the pendulum method, so that the hardness and density of the inorganic cotton are increasing.

7.High-temperature drying: The high-density rock wool material is dried at high temperatures to evaporate the moisture inside the structure.

8.Cutting: The dried rock wool material is cut to form rock wool products of different specifications and uses.

The above are the basic steps of rock wool processing and production, different production processes may vary, if you have more questions it is recommended to consult a professional.