KR890002566B1 - Method for preparing architectural material by using burned paper slurry - Google Patents

Abstract

A method comprises (i) mixing 100-200 mesh burned paper slurry ashes 30-80 wt.%, slaked lime 10-30 wt.%, asbestos 10-20 wt.%, paper slurry and sodium silicate 10-30 wt.%, (ii) adding an appropriate amt. water to the mixt. and pre-reacting at room temp. and (iii) steam solidifying.

Description

Manufacturing Method of Building Materials Using Paper Sludge Incinerator

The present invention relates to a method for manufacturing a building material using paper sludge incineration material to be made of paper sludge from the paper mill. Sludge left after making paper from pulp and other additives is a pollutant and cannot be prevented. Furthermore, the sludge has a lot of difficulties in processing. In general, paper sludge has been disposed of by incineration or incineration to reduce the weight. However, a method of using sludge incinerators in the roots has been proposed, and studies in this field have been actively conducted. The use of these paper sludge incinerators is unstable in the quality of the product, and its use is limited to local applications such as cement weights, asphalt pavements, lightweight aggregates, ceramics, soil stabilizers and building ceilings. The method of manufacturing building materials to date is diatom, which is mixed with slaked lime and the like to cause preliminary reaction at 90-100 ℃, steam curing by mixing asbestos, or hydrothermal reaction under high temperature and high pressure by mixing silica and slaked lime. After the asbestos mixing and steam curing is mainly carried out. Since this method requires a heat source for the preliminary reaction, it causes an increase in manufacturing cost, and there are many difficulties in use due to mixed molding such as asbestos. The present inventors have analyzed the components of the papermaking sludge to solve the above-mentioned defects, and as a result, Al ₂ O ₃ 45%, SiO ₂ 30%, Mg 0.7%, Fe ₂ O ₃ 6% and other 12% Based on this, it was conceived that if SiO ₂ was induced into the refractory calcite silicate, it could be used as a refractory building material. Accordingly, an object of the present invention is to use a paper sludge incinerator as a fire-resistant building agent, and to manufacture a building material using a paper sludge incinerator which can reduce the manufacturing cost by performing a preliminary reaction at room temperature for about 20 minutes. In providing.

The present invention is in the range of 30 to 80 parts of sludge incinerator powder of 100 mesh to 200 mesh, 10 to 30 parts of hydrated lime, 10 to 20 parts of asbestos, 1 to 5 parts of papermaking sludge and 10 to 30 parts of soda silicate No. 3 It is characterized by the steam curing after the addition of the pre-reaction by mixing. In addition, the final concentration for uniform dispersion during molding by mixing the appropriate amount of water is in the range of 1 to 3%. Hereinafter, the present invention will be described in detail by way of examples.

EXAMPLE

Sludge incineration powder 50 parts

25 slaked lime

Asbestos Part 20

Paper Sludge Part 2

Part 3 of Soda Silicate

After mixing the appropriate amount of water to make a concentration of 2% to pre-react at room temperature. In the above process, when the sludge incinerator powder is sieved and used with particles of 150 mesh or less, the reaction effect is increased, asbestos is introduced into the fiber, and the unincinerated paper sludge is added to promote asbestos dispersion. As the sludge incinerator powder is charged with slaked lime and soda silicate 3, other components except SiO ₂ in the paper sludge incinerator powder and soda silicate 3 remain as fillers. After the preliminary reaction at room temperature, the product of the present invention is produced by curing the high temperature and high pressure steam at a temperature of 150 ° C. and a pressure of 18 Kg / cm ₂ by the steam curing method. The physical property test results of the sample obtained by this method are as follows.

[table]

* Thermal conductivity: measured at 30 ℃

* Expansion rate at absorption: measured after 3 hours deposition at room temperature

According to the present invention described above, since the preliminary reaction is possible at room temperature, a heat source is not required as in the prior art, and thus the manufacturing cost can be reduced, and the physical properties as shown in the table have good physical properties. It can be widely used throughout, especially because it has fire resistance, it can also be used as a wall interior material.

Claims (2)

In the method of manufacturing a building material from paper sludge incineration ash, 30 to 80 parts of sludge incinerator powder, 10 to 30 parts of slaked lime, 10 to 20 parts of asbestos, 1 to 5 parts of paper sludge, 10 to 30 parts of soda silicate 3 are mixed, A method of manufacturing a building material using paper sludge incineration, characterized in that the reaction is preliminarily reacted at room temperature by adding an appropriate amount of water. The method of manufacturing a building material according to claim 1, wherein the paper sludge incineration ash powder is pulverized to 100 mesh or more and 200 mesh or less.