RU1828852C - Charge for opaque glass making - Google Patents

Abstract

FIELD OF THE INVENTION This invention relates to compositions of blends for producing a blank glass that can be used in the manufacture of white and colored blank glass. The composition of the charge is as follows (in% of mass): Waste from sheet (window, polished) or container (semi-white, tinted) glasses - 80-90, monosubstituted potassium hydrogen phosphate - 10-20. Burnt glass on the basis of the charge is characterized by the following indicators: cooking temperature, ° C - 1450-1480, production start temperature corresponding to Ig c 3, ° C-1150-1170. The upper crystallization limit, ° C - 1060-1100, the lower crystallization limit, ° C - 980-1000, chemical resistance,% to water - 99.91-99.95, to 96% H2S04 99.90 -99.96, to 1 n NaOH - 97.92-98.01. TECL in the range of 50-600 ° C, a. - 108.3-114.9. To produce multi-colored glassware, various coloring oxides or ceramic pigments are introduced into the charge. 2 tab. Yo

Description

FIELD OF THE INVENTION This invention relates to compositions of blends for producing a blank glass that can be used in the manufacture of white and colored blank glass.

The aim of the invention is to reduce the viscosity and tendency to crystallize.

The mixture for the production of extinguished glass, including waste glass and a silencer, contains waste sheet (window, polished) or container (semi-white, tinted glass, and as a silencer monosubstituted potassium hydrogen phosphate, in the following ratio, in% by weight:

Waste sheet (window, polished) or container (semi-white, tinted) glass - 80-90.

Monosubstituted potassium hydrogen phosphate (KH2P04) -YU-20.

According to the data of X-ray phase analysis, the damping of glasses is completely due to segregation and the participation of the crystalline phase in it, in contrast to the known one, is practically excluded.

Replacing double superphosphate with monosubstituted potassium hydrogen phosphate eliminates the possibility of increasing the CaO content in the glass and provides an increase in potassium oxide, which positively affects the technological properties of the glasses.

The specific compositions of the claimed blends are given in Tables 1 and 2.

As can be seen from table 2, the extinguished glass on the basis of the claimed charge in comparison with the prototype, is characterized

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reduced crystallization activity and temperature of the beginning of production and an extended interval of production, due to which, in contrast to the known glass can be molded both by casting and pressing, and by blowing. At the same time, the samples retain intense killing even at a thickness of 1-2 mm.

The quantitative content of the components in the inventive charge is optimal. By decreasing the content of KHAPMC, the degree of suppression is reduced, and by increasing it, the chemical resistance and uniformity of the glass are impaired.

Samples based on flat glass and semi-white containers belong to the dairy class in color, while on the basis of colored bottle glass they are pale light green in color.

In order to obtain multi-colored glassware, various coloring oxides or ceramic pigments can be introduced into the mixture of the proposed composition.

Glass from the proposed mixture is obtained as follows.

The mixture is composed of pre-crushed to a fraction of 1.0-15 mm glass powder and monosubstituted potassium hydrogen phosphate. Cooking is carried out in a direct heating bathtub,

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The molten glass is molded in the form of plates by free melt spreading in metal forms, in the form of mosaic plates by pressing, or in the form of spherical products by blowing. Annealing of glassware is carried out in Lehr.

The use of the proposed compositions of the blends in the production of blanked glass products will reduce the production temperature, expand the range of products (creates the ability to get blank glass products for construction and household purposes), will reduce fuel consumption by 8-10% while maintaining high removal of glass from 1 m2 of the cooking part of the bathroom furnace , will create the possibility of recycling a large number of cullet.

Claims (1)

The claims The mixture for the production of extinguished glass, including cullet and phosphate compound, characterized in that, in order to reduce viscosity and a tendency to crystallize, it contains as a phosphate compound monosubstituted potassium hydrogen phosphate in the following ratio, wt.%: Cullet 80-90 Single substituted potassium hydrogen phosphate 10-20 Table 1 table 2