RU2669960C1 - Method of producing glass-silica - Google Patents

Abstract

FIELD: manufacturing technology.

SUBSTANCE: invention relates to production of glass-silica. Mechanical mixture is prepared from a glass granulate of a fraction of 30–250 mm, a dried, crushed liquid glass fraction of 10–30 mm, crushed porcelain battle fraction of 30–250 mm at a weight ratio of 8:1:1–7.5:1:1.5. Mixture is obtained, covered in a mold, sintered at a temperature of 735–740 °C.

EFFECT: improving the quality of glass-silica by increasing the compressive strength.

1 cl, 3 tbl, 1 ex

Description

The invention relates to the field of production of glass silica fume and can be used in the building materials industry for the manufacture of tiles.

The prior art method for producing glass silica [patent for the invention of the Russian Federation No. 2097344. Glass siliceous. Publ. 11.27.1997], including filling in the metal form of the upper thin layer of quartz sand with a particle size modulus of 2.0-2.4, subsequent filling of the upper layer of a mixture of magnesium fluoride with crushed waste optical glass fraction 1.25-5.0 mm, sintering granules at a temperature of 1300 ° C in an oven for 30 minutes, crystallization and annealing of products.

The disadvantage of the analogue is significant energy costs due to the high sintering temperature, as well as the use of expensive raw materials, in particular magnesium fluoride, and as a result, the high cost of the final product.

Closest to the proposed method according to the technical nature and the achieved result is a method for producing glass silica [patent for the invention of the Russian Federation No. 2630333. A method of obtaining glass siliceous, publ. 09/07/2017. Bull. 25], including the preparation of glass granulate, filling it into a mold, sintering and annealing. Before filling into the mold, a mixture of glass granulate, clay and colemanite is carried out at a mass ratio of 16: 3: 1-16: 3: 2, respectively, and sintering occurs at 680-710 ° С.

The disadvantage of this method is the high cost of the final product and its relatively low quality.

The problem to which the invention is directed, is to improve the quality of the final product by increasing the compressive strength of glass silica fume.

The technical result is achieved by the fact that the mechanical mixture is prepared from glass granulate fractions of 30-250 mm, dried crushed liquid glass of a fraction of 10-30 mm, crushed porcelain fractions of 30-250 mm in a mass ratio of 8: 1: 1-7.5: 1: 1.5, respectively, are mixed, poured into a mold, and sintering is carried out at a temperature of 735-740 ° C.

Thus, the claimed solution meets the criterion of "novelty."

Comparison of the proposed solution not only with the prototype, but also with other technical solutions in the art did not reveal signs that distinguish the claimed solution from the prototype, which allowed us to conclude that the criterion of "inventive step".

Component Feature:

As a glass granulate, glass granulate based on container and sheet glass, the chemical composition of which is presented in table 1, is used.

Sodium water glass was used according to GOST 13078-81.

Porcelain fight - marriage of porcelain products produced in accordance with GOST 28390-89.

The optimal mass ratio of glass granulate, liquid glass and porcelain battle was determined (table 2).

A comparative analysis of the technological operations of the proposed and known methods are presented in table 3.

Example:

A method of producing glass silica fume includes the preparation of glass granulate from container and sheet glasses. The composition is presented in table 1. For a mixture of the compositions shown in table 2, grinding is carried out in jaw crushers, followed by sieving on sieves.

We will consider the preparation of the mixture on the example of composition No. 5 (table 2).

We mix the glass granulate of a fraction of 30-250 mm with previously dried at a temperature of 100 ° C and crushed liquid glass of a fraction of 10-30 mm and a battle of porcelain of a fraction of 30-250 mm with a mass ratio of 8: 1: 1-7.5: 1: 1.5 in a paddle mixer. The mixture is placed in metal molds. Sintering and annealing are carried out in a tunnel furnace at a maximum sintering temperature of 740 ° C.

We remove glass silica fume from molds that have cooled down to 25 ° C and conduct a test of compressive strength.

An example of quality control of glass silica fume.

The compressive strength of the glass-silica-rock samples 30 × 30 × 30 mm was determined using a tensile testing machine.

For testing, 5 samples were taken, prepared from mixtures of glass granulate, liquid glass, and porcelain battle, presented in table 3. Compression strength was determined as the arithmetic average of five measurements.

As a result, samples made from compositions 4, 5, 6 showed high compressive strength.

The present invention allows:

- improve the quality of glass-silica-cement by increasing the compressive strength;

- reduce the cost of the final product.

Claims (1)

A method of producing glass siliceous, including the preparation of a mechanical mixture, mixing, filling it into a mold, sintering, characterized in that the mechanical mixture is prepared from glass granulate fraction 30-250 mm, dried crushed liquid glass fraction 10-30 mm, crushed battle porcelain fraction 30-250 mm with a mass ratio of 8: 1: 1-7.5: 1: 1.5, respectively, and sintering is carried out at a temperature of 735-740 ° C.