SU560861A1 - Fireproof mass - Google Patents

Description

one

The invention relates to refractory masses and can be used to make dense products for lining furnaces.

A refractory mass is known, including zircon, refractory clay, and orthophosphoric acid l. .

The closest solution is a refractory mass containing zircon, refractory clay, graphite and water 2,

Known masses have insufficient mechanical strength.

The aim of the invention is to increase the mechanical strength of ceramic maosa

It is achieved by introducing alumina hydrate and phosphoric acid into the refractory mass in the following ratio of components, by weight. %:

Zircon

4О-55,0

Clay refractory

2-25

Graphite

17-25

Alumina hydrate, 3-1.5

Orthophosphoric acid5-6

that

Water 1.7-2.5

The mass is prepared as follows.

Clay and graphite are loaded into the mixer in an appropriate proportion and transferred within 3 minutes to obtain a homogeneous mixture. Then zircon and aluminum hydroxide are charged and transferred within 3 minutes to obtain a mixture of a dark green color. After that, orthophosphoric acid and water are added and the whole mixture is moved for 5 minutes. After preparation, the masses are made dense products (bricks), and then subjected to natural drying for 1-3 days and hot drying at 35 ° C for 1 0-12 hours.

Claims (2)

Example 1. To prepare the proposed refractory mass, take 2O% clay 17% graphite, load into the mixer and transfer in 3 minutes to obtain a homogeneous mixture. Then, 55% zircon, 1.3% mini hydroxide are added, mixed for 3 min. Of the mixture of dark gray tsieta. Lloc this mass moistened with 5% orthophosphate acid and 1.7% water and stirring for 5 minutes. Then, by pressing, manufactured products are dried for 1-3 days by hot drying at a temperature of 350 for 1–12 hours. EXAMPLE 2 (in%): Zircon4O Graphite25 Refractory Clay25 Orthophosphoric Acid6 Aluminum Oxide Hydrate 1, 5 Water2.5 The mixture is prepared according to Example 1. Of the refractory mass of the composition (Zircon concentrate, 4O Graphite25 Refractory clay of a fraction less than 0.088 mm 25 Ortho-phosphoric acid of concentration 5О% 6 Aluminum hydroxide 1.5 Water2.5 bricks were made and installed on a siphon slag separator of cupola furnaces Siphon slag-dividers lined with brick made of the proposed material were kept until the change of work of the cupola without repair of the siphon. of the invention, the refractory mass, including zircon, refractory clay, graphite and water, is different from the fact that, in order to increase the mechanical strength, alumina hydrate and phosphoric acid are introduced into it in the following ratio of components. 40-55.0 Zircon 20-25 Clay refractory 17-25 Alumina hydrate, 3-1.5 Orthophosphoric acid 5.6 1.7-2.5 Sources of information taken into account during the examination: 1. Author's certificate of the USSR No. 424841, cl. From 04 to 35/48, 1974. 2. USSR author's certificate number 356265, cl. From O4 to 35/68, 1972.