SU726055A1 - Binder - Google Patents

Description

(54) BINDING

I

The invention is related to the composition of special substances and can be used to produce heat-resistant and conventional concretes, mortars and putties, as well as in the production of heat and sound insulating building materials.

It is known to be heat-resistant, including liquid glass with the addition of sodium fluorosilicate Cl as a hardening initiator.

The disadvantages of such a binder are to reduce the temperature of the application, heat resistance and strength after firing at 800-1200 ° C, low-melting sulphate of sodium fluoride, having a softening temperature of 97 ° C, and a high cost of the binder, in which both liquid glass and sodium silicofluoride are expensive materials.

The closest to that proposed by the technical nature is a live t2, including 8%: water glass

2O-25, ferrovanadi ass 74.7-79.5 and aceto O, v3-O, 5.

A disadvantage of the known in the ground is the presence in its composition of 34-35% Si Od, which reduces the temperature of the application to 500 C.

The purpose of the invention is to increase the temperature of use and heat resistance of the user.

The goal is achieved by the fact that, as a last resort, including liquid glass and finely ground slag from ferroalloy production, contains as a last finely ground slag of ferroboron and ferrotitanium at the following ratio of components, mass%:

Liquid glass10-20

Finely ground slag fer. boraro and ferrotitanium80-9O

In this case, the slags of ferroboron and ferrotitanium are in a 1: 1 ratio by volume.

Slags from the smelting of ferroboron and ferro titanium have a chemical composition shown in table. one.

Spac ferrobor 2.08 66.65 14.0 12.8 2, O

UfaaK ferrotitanium 2.92 65.51 10.28 2.86 2.81 15.58

These slags are gypsum (more than 6O%) and at the same time they contain silica (. 2-3%), which contributes to their g refractoriness and heat resistance, Quartz effects in slags from the smelting of ferroboron and ferrotitanium are excluded, since SiO part of the minerals. Due to this, a heat-resistant substance has a high temperature of application and heat resistance, which allows to increase the durability of heat-resistant concrete, mortars and putties made on its basis. The heat resistance of slags is 19-27 cycles of water heat changes, after heating and holding at 80 ° C. According to the mineralogical composition, ferroboric slag is magnesium-JQ aluminum spinel (due to its high content of more than 1O%), which usually increases the refractoriness and heat resistance of materials. In addition, the composition of the slags includes okrmanite Eve 35 small quantities Melilite, diopside, and pyroborate magnesium. danburite CaO-aSiO -B O.

Ferrotitanium slag according to mineralogicalMus6s avu b includes moxaluminate calcium, titanium containing alumina, corundum. T Od, J C 0, and melilite This slag is more refractory (softening temperature over 15OO C) and contributes to an increase in the temperature 45 of the application of heat-resistant binder,. The disadvantage of this slag is the slowing down of the scrapping when mixing about the liquid glass due to the migration of the latter to the surface of the products with the formation of a dense crust, which slows down the drying and hardening of the inner layers. When mixing finely ground slag of ferrotitanium and ferroboron in a ratio of 1: 1 by volume, migration of liquid glass to the surface of the products is not observed, and the setting of the slurry occurs quickly. This is due to the coagulation of liquid glass during mixing.

Table 1

4.34

Go with finely ground slag ferrobor, tore and prevents migration.

Heat-resistant substance, including slag from ferroboron and ferrotian smelting as a hardening initiator, provides a rapid increase in the strength of cement stone (activity at the age of 3 days hardening more than 350 kgf / cm) evenly changes the volume during hardening and provides high fire properties of materials on its basis (strength after firing at 8OO ° С ZOO mgf / cm, at 25Ocgs / cm, at 1200 ° С more than 200 kgf / cm and heat resistance at water heat, changes 18-20 cycles).

Thus, heat-resistant, including as a hardening activator, thin slags from smelting of ferroboron and ferrotitanium, taken in a ratio of 1: 1 by volume, allows to obtain heat-resistant concrete, mortars, putties and heat-insulating materials with application temperatures above 120 ° C and heat resistance at 8OO С 18-2О water heat changes. Such a substance makes it possible to eliminate the need to add finely ground fillers to the composition of these materials, which are introduced integrally to increase the density of heat-resistant products.

The use in the composition of heat-resistant metallurgical production waste (ferroboron and ferrotitanium slag are not used to date and dump into the dump), improves the efficiency of heat-resistant products by increasing durability and reducing their cost due to eliminating the need to introduce finely ground additives from expensive and scarce materials (fireclay, chromite, magnesite, etc.)

Reduced content in the composition of the liquid in the glass (no more than 2O%) contributes to an increase in the density and refractoriness of the mineral stone, as well as reduce the cost of heat-resistant materials. Example. The composition of the heat-resistant in the live, wt.%: Liquid glass at a density of 1.38 Fine ground slagferrobor and ferrotitanium 9O Fine ground to residue on O, O8 mm sieve no more than 2% of the slag from ferroboron and ferrotitanium, taken in a ratio of 1: 1 by volume from calculating a mixture of 1m, mixed in a dry state until homogeneous, shuttered with a liquid glass with a density of 1.38 g / cm, and formed into ballet specimens 4.x4x16 cm in size. The compaction of the samples is carried out by vibrating for 1min. After stripping, samples are stored in the air. at room temperature and subjected to strenuous and fire properties tests in accordance with the Table. 2, it is clear that the proposed dredger of all compositions has a high initial strength (at the age of 7 days hardening reaches 5OO) and high durability after calcination, and, therefore, materials based on it retain their high strength at these temperatures. Heat resistance in the water at 80 ° C in water heat changes is high and amounts to 18-2 ° cycles, which indicates stability with rapid temperature changes. High initial and residual strength heat resistant. g runyuto increases longBa l in c and 2

Eternity of heat-resistant concrete, mortars, putties, and composite insulation materials manufactured on its basis.

Claims (2)

1. Consisting of, including liquid, sto and finely ground slag from ferroalloy production, characterized in that, in order to increase the temperature of use and heat resistance, it contains as finely ground slag from the ferroalloy production slag of 5 and 6 CH 156-67 and heat-resistant . to concretes on the basis of liquid glass. PRI me R 2, The composition of heat-resistant, dry wt.%: Liquid glass17 Fine-grained slag from ferroboron and ferrotitanium S3 The methods for preparing dough from heat-resistant as living, shaping of the girder specimens, as well as the conditions of hardening and testing, are similar. Example 1. PRI me R 3. The composition of heat-resistant in the mass, mass% :, Liquid glass20 Finely ground slag of ferroboron and ferrotitanium30 Preparation of dough, production of samples-Balbchek, conditions of their hardening and testing were also carried out, as in Example 1 The test results found yo average value of at least six parallel tests are presented in Table. 2 .- 4% J f -tti - - ". . . - .- .-- " ss .. ; ;.; -, 7 f-v f - A2 (: ro55 robor and ferrotitanium with the next source information, the ratio of components, mass,%: taken into account in the examination of Liquid-glass 10-2O Ground slag fer-1. Instructions for preparator and ferrotitanium 8O-90 technology 5 laziness and the use of heat-resistant concrete 2. Hanging on p. 1, about tl and h and y- (SI 156-67), 1967, p. 5-35. shche e with the fact that it contains slags ferroboron and ferrotitanium in a ratio of 2. USSR author's certificate 1: 1 by volume. No. 563390, C 04 B 19/04, 1975.