Preparation method of formaldehyde-free rock wool

A technology of rock wool and formaldehyde, which is applied in the field of preparation of formaldehyde-free rock wool, and can solve the problems of formaldehyde-free application environment restrictions and other issues

Inactive Publication Date: 2020-06-26
NANJING TONTECH ROCKWOOL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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,

Method used

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Embodiment Construction

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] A preparation method of formaldehyde-free rock wool, comprising the steps of:

[0032] S1. Prepare materials

[0033] Prepare and weigh quantitative quantities of basalt, dolomite, slag and coke in a ratio of 60-65:15-20:20:17;

[0034] S2. High temperature melting

[0035] Mix basalt, dolomite, slag and coke, pass the mixture of basalt, dolomite, slag and coke into the preheated melting furnace, and blow hot air at 450-550°C into the melting furnace to support combustion. At the same time, the temperature of the melting f...

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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...

Claims

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Application Information

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IPC IPC(8): B32B37/10B32B38/00B32B38/16C03C13/06C03B37/04C03B37/14
CPCB32B37/10B32B38/00B32B38/164B32B38/0004C03C13/06C03B37/04C03B37/14B32B2038/0076
Inventor 孙鑫赵艳娟
Owner NANJING TONTECH ROCKWOOL CO LTD
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