Preparation method of formaldehyde-free rock wool

Abstract

The invention relates to the technical field of rock wool preparation, and discloses a formaldehyde-free rock wool preparation method, which comprises: S1, material preparing: weighing a certain amount of basalt, dolomite, slag and coke according to a ratio of 60-65:15-20:20:17; S2, high-temperature melting: mixing the basalt, the dolomite, the slag and the coke, putting the mixture into a meltingfurnace, blowing hot air at 450-550 DEG C for supporting combustion, controlling the melting temperature of the melting furnace to be greater than 1450 DEG C, and melting the mixture into a melt forlater fiber forming. According to the preparation method of the formaldehyde-free rock wool, the prepared rock wool does not release formaldehyde, so that the rock wool is environment-friendly and safe to use.

Description

technical field [0001] The invention relates to the technical field of rock wool preparation, in particular to a preparation method of formaldehyde-free rock wool. Background technique [0002] Formaldehyde is defined as carcinogenic and teratogenic shape material by the World Health Organization, is the allergen of generally acknowledging, also is one of potential strong mutagen. Rock wool is widely used in the construction field because of its good fire resistance, and more and more home interior decoration and partitions, the market has stricter requirements on its formaldehyde release, and when used indoors, the formaldehyde release should not exceed 1.4 mg / (kg h), which fully demonstrates that formaldehyde-free rock wool products are imperative. [0003] At present, the main raw materials for producing rock wool are basalt, blast furnace slag and dolomite. After the above raw materials are melted at high temperature, they are centrifuged at high speed by a four-roller...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing formaldehyde-free rock wool, which has the advantages of making the prepared rock wool free of formaldehyde, making the use of rock wool more environmentally friendly and safer, and solving the problem of the current rock wool due to Due to the limitations of processing technology and raw materials, there is still a small amount of formaldehyde released after the rock wool board is prepared, which is limited in the formaldehyde-free application environment.