SU1039929A1 - Method for making heat- and sound-insulating products - Google Patents

Abstract

METHOD OF MAKING HEAT AND SOUND INSULATING. - - ,. l-i -.,. :: - - Іс | д I, PRODUCTS, including mixing .granulated mineral wool with waste production of Akmigran slabs, pre-mixed | 1m with water, mixing the mixture with fused powder, forming the mixture under pressure, followed by drying and cutting on plates, characterized in that, in order to reduce the thermal conductivity of the products, before mixing the granulated wool with waste; the production of PLATE Amigran, the latter is granulated by mixing with water in a ratio of

Description

from r to

CD 110 And the acquisition relates to the industrial use of building materials and can be used for the manufacture of geschiyu and soundproof insulation based on mineral wool. In the process of producing sound-absorbing plates Akmigran (GOST 17918-72, a large amount of lumpy and dust-like wastes is formed. In this connection, the ways of using Akmigran plates waste as a filler in the manufacture of heat and sound insulation materials are of great importance. A known method of manufacturing sound-absorbing plates, comprising mixing mineral or glass watts in the form of granules ranging in size from 2 to 12 mm with a solution with a concentration ranging from 1.5 to 5% based on liquid starch or carboxymethyl Cellulose is combined with irrigated syl acetate or synthetic rubber latexes in the ratio: 1.5 O, 5 by weight of dry substances, molding the mixture under pressure, drying and cutting into LI 3 plates. The closest in technical essence and the achieved result to the invention is the method of manufacturing heat and sound insulation plates from the raw material mixture, including mixing Akmigran slab waste with water, mixing with granulated mineral wool, introducing into the resulting mixture a pre-prepared binder with subsequent recycling eschivaniem to give a homogeneous molding composition. 2 However, products manufactured by a known method are characterized by increased thermal conductivity. The aim of the invention is to reduce the thermal conductivity of products. This goal is achieved by the fact that, according to the method of producing heat insulating products, including displacing granulated mineral wool with production waste Akigran, previously displaced with water, transferring the resulting mixture to bond, forming the mixture under pressure, then drying and cutting n the plates before by mixing granulated wool with waste from the production of plates –Acigran last granulate by mixing with water in a ratio of 1: 0.8-1: 0.5 for 2-5 minutes, and blending with granulated ineral9 hydrochloric granulated wool production waste is performed at a ratio of 1: 1,3-1: 0,6. N, p and m 1 Waste from the production of Akmigran Sound Absorbing Plates, including dust, is mixed with water in the ratio of waste: water - 1.0: 0.5. This ensures the granulation of waste, and with the duration of mixing for 2 minutes, granules with a size of 7-10 mm are obtained, with a duration of movement of 3 minutes granules with a size of 7-8 mm, and with a duration of movement of 5 min, granules with a size of 6-7 mm . After that, the resulting granules are mixed with granulated mineral wool in a ratio of 1: 1.3 by weight of dry matter. Then, a pre-prepared starch-based binder is added to the mixture in an amount of 28% by weight of solids, transferred in a mixer until a homogeneous mass with a humidity of 69% is formed, the mixture is molded under pressure, dried and cut into plates. Example 2. Waste from the production of Acmipran sound-absorbing plates, including dust-like, is mixed with water in a ratio of 1: O, 65. With a duration of stirring for 2 minutes, granules with a size of 7-8 mm are obtained, within 5 minutes - granules with a size of 5-7 mm. The obtained granules are mixed with granulated mineral wool in a ratio of 1: 0.6 by weight of dry substances, then a previously prepared starch binder in the amount of 26% by weight of dry substances is introduced into the mixture, mixed in a mixer until a homogeneous mass with a humidity of 67 %, molded mixture under pressure, dried and cut into plates. Example 3 The manufacture of products is carried out similarly to the executed technology, but with a waste: water ratio of 1: 0.8, and with a mixing time of 2 minutes, granules of 7-8 mm are obtained, and with a duration of mixing of 3 minutes, granules of 6-7 mm are produced. , with a duration of 5min - size 5-6 mm. When reducing the mixing time to 1-1.5 minutes, the granules have sizes larger than 10 mm and are not applicable in the Akmigran plate technology, since the size of the plates does not exceed 20 mm. Increasing the mixing time to 6-7 minutes

310399294

changes the size of the granules, therefore different sizes, are given in the table,

appropriate. For comparison, the heat pipe is given. If the quantitative cootw plate breaks down when introducing non-granulated relations, the waste is disturbed; water., lumpy waste by a known method, or crushed into dust or dissolve-

separate fibers. granulation of chipboard production

Heat and sound characteristics - Akmigran prior to their introduction into the raw material

Ionized products obtained from a raw material mixture allows one to reduce heat-conducting mixtures using granularity of products by 1–15%.

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Claims (1)

METHOD FOR PRODUCING HEAT AND SOUND INSULATION PRODUCTS, including mixing granulated mineral wool with waste from Akmigran slabs pre-mixed with water, mixing the resulting mixture with a binder, molding the mixture under pressure, followed by drying and cutting into plates, characterized in that in order to reduce the thermal conductivity of the products of granular mineral wool production waste with granular performed at a ratio (1: 1.3) - (1: 0.6). GO SO SO SO 11 1039929