SU998429A1 - Refractory composition - Google Patents

Description

(54) REFRACTORY MASS

The invention relates to refractory masses j used for filling between rows of refractory products in the lining of converters.

A refractory mass of 97% fine magnesite powder and 3% prepared CMonutl is known.}

The disadvantages of the known mass are its low durability due to the small amount of carbon, short shelf life, unpleasant irritating odor.,

Closest to the offer is a refractory mass containing finely ground magnesite powder and pitch coke t23. ,

The disadvantage of the known mass is that, although it has a high carbon content, the presence of silence leads to the clumping of the mass and the reduction of its shelf life.

The purpose of the invention is to increase the shelf life of the mass.

The goal is achieved using as carbonaceous

Binding ground high-temperature pitch in the following ratio of components, wt.%: I with Fine-ground magnesite powder 96-97 High-temperature pitch powder 3-4 To obtain the mass, Q is made of three mixtures of ingredients containing.

weight.%:

Fine magnes

O 96.5 sieve powder Fine powder Magne97

96 sieve powder

15 powder you okotemperaturnogo

3.5 pitch

Each mixture is prepared separately.

20 Fine magnesite powder. And high temperature pitch powder are fed into the mixer by the already dosed ones. The finished mass is discharged: into clean dry boxes.

25

Claims (2)

The table shows the properties of the obtained mass. Claims Refractory mass containing finely ground magnesite powder and Carbon binder, characterized in that, in order to increase the shelf life, it contains high-temperature pitch powder as a binder in the following ratio of ingredients wt.%: Powder high-temperature pitch. 3-4 Sources of information,: into attention in the examination 1. A. Kudrin. and Guliev G.F. lugs for oxygen envelopes. M., Metallurgists, 1.966, p.34. 2. Authors certificate of the USSR 618359, cl. On 04/35/06, 1977.