SU1117288A1 - Raw mixture for manufacturing constructional heat insulating articles - Google Patents

Abstract

RAW MIXTURES FOR THE MANUFACTURE OF CONSTRUCTIVE THERMAL INSULATION OF CONSTRUCTIVE PRODUCTS, including basalt fiber, expanded perlitopic sand and Portland cement, which has been used to improve the flexibility of the system to make it more difficult to be beaten. the following ratio of components, wt.%: Basalt fiber 20-21 Expanded perlite sand 25-53 Portland cement 16-50 Asbestos 5-10

Description

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The invention relates to the field of building materials, namely, compositions for the manufacture of structurally thermally insulated products of a complex profile, for example, ventilation ducts.

The known raw material mixture for the manufacture of structurally thermally insulating products includes basalt fiber, expanded perlite sand, various bonding materials, for example, portland cement, silica, and water Cl J,

The closest technical solution to the invention is the raw material mixture for the manufacture of structurally thermally insulating products, including, in wt.%: Basalt fiber 25-31, expanded perlite sand 25-53, portland cement 16-50 (2J

The disadvantage of the known material is the lack of flexibility in the newly formed sheets, which does not allow immediately after forming to give the sheets the necessary shape in the manufacture of products of complex profile.

At present, such products, in particular, ducts of ventilation ducts, are made without mechanization of the profiling process by cutting a sheet of material on a diamond disc and then mechanically joining individual parts using an aluminum corner. This method of manufacturing ducts of ventilation ducts requires considerable labor costs.

The purpose of the invention is to reduce labor costs in the manufacture of complex profile products due to the flexibility of the newly formed sheet.

This goal is achieved by the fact that the SF mixture for the manufacture of structurally heat insulating products, including basalt fiber, expanded perlite sand and portland cement, also contains asbestos at the following ratio of components, May. %:

Basalt

fiber 20-21

Swollen

perlite

sand25-53

Portland Cement 16-50

Asbestos 5-10

The introduction of asbestos into the raw material mixture enables the mechanized

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using a method (by pressing or rolling) to make a product of a complex profile, for example a ventilation box 3 m long, from a newly formed sheet. When trying to profile a material from a known mixture, cracks appeared on the product surface. The optimal amount of asbestos, which provides the newly formed sheet with sufficient flexibility (rounding a fiber with a diameter of 219 mm in accordance with GOST 17177-71), is 5-10 wt.%. An increase in the content of asbestos on 10 May,% is not advisable, since

The flexibility of the sheet is already achieved for the profiling process. The products are manufactured according to the technology, which includes the dosage and loading of components, the preparation of molding sand, molding and profiling of the sheet, heat treatment,

Odozirovanny portions of fibrous filler are loaded into a turbo-mixer together with an aqueous suspension

asbestos, where the grinding and mixing of the fibers are carried out for 3 min5, after which the dosed quantities of coarse expanded perlite sand and the port

Land cement. The mixture is additionally stirred for 3-4 minutes,

The resulting cement mixture is loaded into a ladle mixer, from where it is served along the chute along with

estimated amount of water in the bath of mesh cylinders of a sheet-forming machine. The forming is carried out to the required thickness, after which it is cut into sheets,

production from sheets of products of a complex profile and heat treatment of products.

Specific examples of the proposed and known composition of the raw mix for the manufacture of constructively heat-insulating products of a complex profile are given in Table 1.

The physicomechanical indicators of products from the above raw mixtures, as well as labor costs for the manufacture of 307 pieces, the products of a complex profile (replaceable work) are shown in Table 2, From Table 2, it follows that the manufacture of 307 pieces, structurally insulated products of a complex

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profile (changeable production of leaf-forming is 229 persons / h, and according to the famous kneading machine) from the syphic mixture of 2320 persons / h, i.e. perhaps the reduction of the invention is necessary to expend labor costs for 2091 people / h per shift,

Table 1

table 2

Claims (1)

RAW MATERIAL MIXTURE FOR THE PRODUCTION OF CONSTRUCTIVE HEAT-INSULATING PRODUCTS, including basalt fiber, expanded perlite sand and Portland cement, which is noteworthy in that, in order to reduce labor costs in the manufacture of products by increasing the flexibility of the following, the additionally formed sheet components, may Basalt fiber Expanded perlite sand Portland cement Asbest 20-21 25-53 16-50 5-10 1 1 1 7288