SU1011606A1 - Batch for making refractory products - Google Patents

Abstract

The CHARGE FOR THE MANUFACTURE OF REFRACTORY PRODUCTS, including silicon carbide, a refractory clay and phosphate binder, characterized in that, in order to increase the heat resistance and reduce the firing temperature, it also contains alumina, kaolin and slabs as phosphate binder, alumochromophosphate in the following ratio of components, wt,%: Silicon carbide 45-52 Refractory clay 10 - 16 Aluminum chromophosphate binder 8-10 Alumina8-10 Kaolin 10-16 Fight of plates and caps of CO based on silicon carbide 5-10

Description

Ltd:)

The invention relates to ceramic production, mainly to the production technology of refractory supplies used in the firing of ceramic products, and can be used in enterprises specialized in the production of installation equipment.

At present, refractories made of masses containing refractory components, wt.% Silicon carbide 20-75 / electrocorundum 10-30; alumina 0.1–25 and refractory clay 7–28 as binders. Products made from the indicated weights are fired at and then operated in kilns for firing ceramic products 1.

The insufficient mechanical strength of the fireplant made from this mass in the unfired joint requires high-temperature firing, which leads to significant heat and energy consumption.

Closest to the proposed p of the technical nature and the achieved result is the mixture to obtain refractory products t2, including, wt.%: Silicon carbide

fractions 100-125 mm 21.5-24.7 Silicon carbide

fractions 69-80 microns 22.9-31.8 Silicon carbide

fractions 24–25 µm 22.4–24.7 Clay refractory 17–, 7–19.1 Aluminoborphate binder 6, 6–8.6 The products from this mass have insufficiently high heat resistance and a high calcining temperature.

The purpose of the invention is to increase the heat resistance and reduce the firing temperature.

The goal is achieved

the fact that according to the invention the mixture

for the manufacture of refractory products, including silicon carbide, refractory clay and phosphate binder, additionally contains alumina, kaolin and slab blasts and caps based on 50

silicon carbide, and as a phosphate binder - aluminum-chromophosphate in the following ratio, wt.%:

Silicon Carbide 45-52 Clay Refractory 10-16 Alumochromophosphate

binder 8-10

Alumina8-10

Kaolin 10-16

The fight plates and caps

on the basis of silicon carbide 5-10 This content of components ensures the pressing of products of complex configuration and, at the same time, allows after heat treatment at a temperature of 600-800s. polymer component to obtain high-strength heat-resistant product.

 The products of the proposed composition in comparison with the known, calcined at a temperature, have increased mechanical strength by 30-35%, and their turnover is higher than known by 14%.

This reduces the heat and energy consumption for the firing of refractory products, it is possible to reduce the material consumption of products without reducing their performance characteristics to reduce labor costs for their manufacture.

Specific compositions of the proposed mixture are presented in table. one.

Comparative properties of the known and the proposed charge are presented in table. 2

Thus, the products obtained from the proposed mixture have a higher heat resistance, lower firing temperature.

In addition, tests of the proposed mixture show that the mass has improved pressing properties, and its use reduces the heat treatment temperature and the consumption of scarce expensive refractory raw materials.

Table

Claims (1)

MIXTURE FOR THE PRODUCTION OF REFRACTORY PRODUCTS, including silicon carbide, clay, refractory and phosphate binders, characterized in that, in order to increase heat resistance and reduce the firing temperature, it additionally contains alumina, kaolin, and the fight of plates and capsules based on silicon carbide, and as a phosphate binder, aluminochromophosphate in the following ratio of components, wt.%: Silicon carbide Refractory clay Alumochromophosphate binder Alumina Kaolin Fight plates and capsules based on silicon carbide 45 - 52 10 - 16 8-10 8-10 10 - 16 5-10> silicon carbide, and as a phosphate binder - aluminochromophosphate in the following ratio of components, wt.%: