SU649684A1 - Refractory compound - Google Patents

Description

The invention is lacking in the production of fireproof materials and can be used in the manufacture of protective lining of the fire walls, as well as covers of thinning devices operating at temperatures up to 1600 ° C. The known refractory mass, including chamotte, clay and aluminophosphate binder, is known 1. The closest to The invention is a mass of about 01. 0, containing weight. %: chamotte 65-70, pyrophyllite 15-20 and binder - clay 15-20 2. However, products made from the specified fireproof masses have rather high strength and heat resistance indicators only after heat treatment at 800-1400 ° C. - increase in strength and heat resistance during heat treatment of 200-250 ° C. This is achieved by the fact that the refractory mass, including chamotte, pyrophyllite and binder, contains, as a binder, an aluminum-chromophosphate binder in the following ratio of components, weight. %: Pyrofillite Alumochromophosphate binder Else Shamot Application of nrofillite as a refractory raw material is a good combination of a number of its important positive technological properties, such as ease of grinding, the ability))) using it as an thickener in an unbaked condition, too thick, it can be combined with combinability combined with combinability. chamotte n binder. The introduction of the aluminum-chromophosphate binder and pyrophyllite into the refractory packing masa simultaneously provides sufficiently high thermo-mechanical properties at low temperatures of its heat treatment - 200-250 ° C. The refractory printed mass is finally sintered using it as a refractory lining material, where it acquires additional thermal stability irochnost. Ground myrophyllite is obtained by grinding (up to 3-5 μm) natural pyrophyllite sludge or waste from mechanical processing of parts made from pieces of irirody pyrophyllite. The preparation of the refractory mass is permitted.

by direct mechanical mixing of the original components.

The table lists examples of the compositions of the proposed refractory mass and them. physical and mechanical properties.

The described refractory material is distinguished by high technical indicators and is ready for operation; it has been repeatedly subjected to laboratory and industrial tests under operating conditions.

Strength strength

Iri is compressed. kg / cl (,

liOc.Tc TCi) .MOo6pa6oTKH

at tc hierature

The limit of the proc;;

bending, Kilc.vf.

after rubbed 0ot0otk: 1

at a temperature

200. G

ISfjO-C

170

48

37

200

Claims (2)

1. Mamykin P. S. and Strelov K. K. Refractory technologists, “Metallurgists, 1970, with. 472-473. 2. The author's certificate of the USSR L 392041, cl. From 04 To 33/22, 1971.