SU30607A1 - A method of manufacturing building boards, boards, etc. products - Google Patents

Description

For the manufacture of construction materials in the form of plates, boards, etc. using the proposed method, I use rf waste from the timber processing industry and agriculture, such as: wood chips, straw, and similar organic fibrous materials. These materials are processed in crushed form by lime-silica mixtures that bind them, followed by steaming in boilers under increased pressure.

The main material for making the proposed method of building boards, boards and similar products are wood chips, reeds, peat, straw, plant stems and similar organic fibrous materials. Pre-ground, they are mixed with caustic lime in the presence of water with the addition of silica in the form of a diatom, tripoli, infusorial earth, or sand. The resulting fibrous mass is molded under low pressure in plates, boards, etc., which in boards or forms are subjected to aparke under increased pressure (up to 8 atmospheres) for a better production.

use of lime-silica bonding properties. At the end of the steaming, the shields or forms are removed. To antiseptise and reduce hygroscopicity, the products obtained in a cold or hot condition are immersed or sprayed with solutions of sulphate salts of iron, aluminum or copper, or acid sulphate of sodium or potassium, weak solutions of sulfuric acid or liquid glass. Materials freed from shields or molds directly after parsing or after antiseptic treatment are dried in air or in gases containing carbon dioxide. In order to increase the strength of building materials, it is possible to introduce metal, wood or reed reinforcement into the mass to be molded. The author proposed an approximate composition of the mass for forming building plates, boards, and t, p .: wood chips -14 kg, caustic lime — 3 kg, and infusor earth — 3 kg IG waters 10 d. The molded products were subjected to steaming for 6 hours at 8 atmospheres of pressure.

The subject matter of the invention.

1. A method of manufacturing building boards, boards and the like from wood chips, straw, reeds, peat and the like organic fiber materials by bonding these materials with lime-silica binder using infusor earth, etc., characterized in that in order to make the best use of the binding properties of the lime-silica mixture, the fibrous material sprayed with this mixture or otherwise mixed with it, after being compressed, is subjected in boards or in latticed forms under pressure

the material that has come out of the steaming, is removed from the molds in the usual manner.

2. Acceptance of the method mentioned in claim 1, characterized in that, in order to antisepticize and reduce the hygroscopicity of the material by partially binding free lime, the material released from steaming, after removing the forms or shields, is treated with solutions of ferrous acid salts of iron, aluminum or copper, or sodium or potassium acid sulfate, weak solutions of sulfuric acid or water glass, by immersing the material in these solutions or by spraying it in a hot or cold state.