SU1539185A1 - Ceramic composition for brick-making - Google Patents

Abstract

The invention relates to the production of clay construction bricks. In order to reduce the cost of production while maintaining quality, the ceramic mass for making bricks includes the following components, wt%: loess-like loam 91 - 97

coal trifle 1 - 3

water-jacket slag containing FE ₂ O ₃ 49.3 and SO ₃ 0.02 2 - 6. Physical and mechanical properties of the brick are as follows: water absorption 16.4 - 17.2%

mechanical compressive strength 14.2 - 15.4 MPa

mechanical bending strength 2.2 - 2.6 MPa

frost resistance 18 - 26 cycles. 2 tab.

Description

The invention relates to the ceramic industry and can be used in the manufacture of bricks.

The aim of the invention is to reduce the cost of production while maintaining quality.

The chemical composition of the components used is given below.

Wadded slag is a waste product from the copper smelting shop and is obtained after the slag furnace is settled. The granulometric composition of the wadding slag is such that it is introduced into the mixture without crushing and screening: grains larger than 3 mm are absent, the amount of fine particles smaller than 0.1 mm does not exceed 15%.

The chemical composition of the slag, wt.%: SiO-i 33,18; A170E5.79; Hg 0.47; 49.3; CaO 6.86; KgO 1.10; Na20 0.32; K20 2.05; S03 0.02. Fire resistance is 1080-1160 ° C.

The chemical composition of loess loam, wt.%: SiQi 57.4 Alj03 10.52; CaO -6.82; MgO 3.66; og03 5.82; RaO 3.18; S03 3.17; N4OGTSgr- 1.26, ppt 7.50. Small loam,

 loose, coarse raw materials (particle content less than 0.001 - 20%), plasticity number 8-10, highly sensitive raw materials (70 s) by sensitivity to drying. At a melting point of 050-080 ° C, loess loam refers to a low-melting raw material, sintering interval

 50-70 ° C.

cl

00

with

oo ate

t

Bricks are made according to the following technology: after dosing components in the specified ratios, the mixture is ground in coarse-type mills and fine-milled mills. Moistening with hot water at 35 ° C is carried out in a clay mixer to a moisture content of 18-19%.

The brick is pressed with a vacuum press. After plastic pressing, the brick is dried in tunnel dryers for 36-42 hours. The dried brick is sent for firing in a ring kiln, the optimum brick firing temperature is 950-1000 ° C.

The compositions of ceramic masses are reduced to -. us in the table. J, physico-mechanical characteristics of the brick - in Table. 2

formula

the invention

0

five

Ceramic mass for the manufacture of bricks, including loess loam, coal fines and copper smelter production, characterized in that, in order to reduce production while maintaining quality, it contains wadding slag containing 49.3 wt.% And S03 as a copper smelting waste. 0.02 wt.% In the following ratio of components, wt.%:

Loess-like sugdins Ugolnaya trifle Specified batter slag

Table 1

91 1

97 3

2-6

table 2

Claims (2)

produced by a vacuum press. After plastic pressing, the brick is dried in tunnel dryers for 36-42 hours. The dried brick is sent to kiln g · ring kiln, the optimum brick kiln temperature is 950-1000 ° С. The compositions of ceramic masses are given. We are in the table. 1, physico-mechanical characteristics of the brick - in table. 2. Ceramic mass for the manufacture of bricks, including loess-like loam, coal fines and waste from smelting production, characterized by the fact that, in order to reduce the cost of production when wounding quality, it contains water-waste slag as a waste from copper smelting, containing. total Fe ^ Oj 49.3 wt.% and S0 ₃ 0.02 wt.% in the following ratio, wt.%: Loesslike loam Coal fines Indicated water-slag slag tsesokhkakomponen Table 1 Content Components, May. % Components - _t - _g P" Loesslike sug LINK 97 94 91 Coal trifle one 2 3 Water slag 2 four 6 > Table and 2 Property metrics products from the masses Indicators one ........ one 2 1 ³ Water absorption,% 17,2 16,4 16.8 Mechanical MPa on compression 14.6 15.4 14.2 to bend 2,4 2.6 2.2 Frost resistance PICKS eighteen 26 twenty Drying time, h 36-42 36-42 36-42 Density, kg./m ^ 1400 1420 1460 Compiled by L. Gostev