SU1571030A1 - Raw mixture for manufacturing wall ceramic articles - Google Patents

Abstract

The invention relates to the manufacture of wall ceramic products. In order to increase the strength of the products, the raw mix includes the following components, wt%: clay raw materials 98.06-98.70, tall oil pitch 1.2-1.8 and alkaline emulsifier 0.1-0.14. The physical and mechanical properties of the products are as follows: the compressive strength is 32.8-37.7 MPa, while the bend is 6.3-7.0 MPa. 3 tab.

Description

cl

-vj

The invention relates to the building materials industry and can be used in the technology for wall ceramics, in particular ceramic stones.

The purpose of the invention is to increase the strength of products

Tall pitch has an acid number of 26-36 mg KOH / g and contains, in May.%: Neutral substances 25-35; oxidized substances 13-18; resin acids 9-26; fatty acids 30-39,

Tall pitch is the remainder of the distillation of tallow oil. This by-product is a water-insoluble solid, monolithic mass with a softening temperature of 30-50 ° C.

The individual composition of fatty and resin acids, determined in the form of their methyl esters by gas-liquid chromatography, is given below:

Pitch resin acids

Pimarova

Tetrahydroabietin

Dehydroabietinova

Levopimarova

Content of resinous acids in tall pitch, 7, 1.53

2.37

i, 40 0.40

O5

udfc

From opimar ova 4.60

Abietinova 61,27 Dihydr ovieti ova 19, 88

Neoabietin 5.87 Nonidentally identified acids2.68 Products are manufactured according to the following technology.

Example. For the preparation of the raw material mixture for the production of wall ceramics, heavy loam of the following chemical compound is used.

tava,%: SiO

A1405 CaO

MgO K20

56.02 13.81 5.80 5.61 5.83 4.65

Na-iO0.41

S030,17

ppt 11,3

The preparation of the direct emulsion of the tall pitch is carried out as follows.

A tall oil pitch heated to 60-70 ° C is injected with a 2% aqueous solution of an alkaline stabilizer (NaOH, KOH). The above components are stirred for 2–3 minutes during heating until a homogeneous mass is obtained. Obtaining a stable emulsion does not require intensive mixing, since an appropriate balance between the content of fatty and resin acids in the pitch ensures that the process of obtaining the emulsion is

spontaneous emulsification method.

0

five

35

40

The mass ratio of tall pitch and 2% stabilizer solution is 1: 4. In terms of dry matter, the mass ratio of tall pitch and alkaline emulsifier is 12.5: 1.

The emulsion of tall pitch is introduced into the clay raw material and mixed until the components are evenly distributed, after which water is introduced in an amount necessary to obtain a mass of molding moisture. From the resulting mass by the method of plastic molding, samples are prepared in the form of cubes with ribs 50 mm in size, standard beams 135x30x15, which are dried at 105-110 ° C and fired according to the following mode: drying the raw material from 20-200 ° C for 2 hours temperature 980 ° C for 4 h, holding at maximum temperature for 2 h, cooling products.

The physicomechanical properties of the products are given in the table.

Claims (1)

Invention Formula Raw mix for the manufacture of wall ceramic products, including clay raw materials and surface-active additive, characterized in that, in order to increase the strength of products, it contains as a surface-active additive tall peck and alkaline emulsifier in the following ratio of components, wt.% : Clay raw materials Tall pitch Alkaline emulsifier 98.06-98.70 1.2-1.8 0.1-0.14