SU924009A1 - Batch for making construction products - Google Patents

Description

The invention relates to the construction materials industry, in particular to the production of building ceramics, and can be used in industrial and civil construction.

Known mixture for the manufacture of bricks [ΐ], comprising the following components, wt.%:

Loess-like breed 50-75

Clay 15-30

Ιΐ / lacquer of electrothermophosphorus production 10–20

The brick obtained on the basis of this charge has the following characteristics:

Flexural strength kgf / cm 94-140

compression kgf / cm ^ 217-350 frost resistance,

cycle 100

The firing temperature, ° C 1000-1050

Bulk weight

products, g / cm ³ 1,68-1,75

ten

15

Closest to the offer is the mixture for the manufacture of building bricks [2], which includes the following components, wt.% ^

Slag electrogermophosphoric production 10-15 Loesslike loam 78-87

Plastic Clay 3-5

Coal (over 100%) 3-4

The brick obtained on the basis of the known charge has the following characteristics:

Compressive strength, MPa 21.8—22.6

Water absorption,% 17.5-18.0

Total shrinkage,% 2.0-3.0

The disadvantages of this composition are the relative low strength and high absorption of the products, as well as the production of bricks of normal size.

The purpose of the invention is the production of large-sized products, increasing the strength

and reduced water absorption.

This goal is achieved by

the fact that the charge for the manufacture of gray30

3,924009

four

9

body products, including slag of electrothermophosphorus production, loess loam, clay, plastic and burnable additives, contain ashes as a burnable additive in the following ratio Component®, wt%:

Slag electro thermophosphorus production 25-35. Loess loam 20-30 Plastic clay 20-30 Ash 15-25 For the manufacture of ceramic

As raw materials, slag from the Chimkent phosphate salt plant, plastic clay from the Angrensk deposit, loam from the Chimkent deposit and coal ash from the Angren deposit are used.

The chemical composition of raw materials is given in table. one.

Slag and clastic clay are pre-ground before passing through

the 900 hole spit / cm / s is then mixed with the ash and crushed loam before passing through the 40 og / cm ^g sieve and forming articles of size 500x500x80 5 1000x500x400 mm, and also 18 slit stones. They burn products at 9501000 ° C. ⁰

Specific examples of the proposed mixture are given in table. 2,

The obtained ceramic stones and large-sized products have the following physico-mechanical properties given in table. 3

As can be seen from table 3, the proposed brick has increased strength and low water absorption.

In addition, the proposed composition 20 allows to obtain large-sized ceramic products, for example 5OOh x500h80 and 1000x500x400 mm and more.

'Table 1

Material About _Mr. 'A £ _r 0 ₅ Th 0 ₂ Geo Cao m ₉ 0 K ₂ 0 Ma ₂ O 5 0 ₅ ppp Slag of Chimkent plant of phosphate salts 45.25 3.66 0.51 43.68 2.40 1.07 0.61 5.7 Clay Angrenskogo field 0 56.22 30.06 1.24 - 1.04 0.36 0.18 0.06 0.48 10.36 Loam of the Chimkentsky deposit 52,44 12.17 3.25 - 12.10 2.9 3.10 14.04 Coal ash from the Angren coal deposit 32.0 22.0 15.0 16,0 3.5 - 3.5 8.0

Kdmper

Electrothermophosphoric slag Plastic clay Loess-like loam Zola

table 2

Content, wt.% one 2 3 25 thirty 35 20 25 thirty thirty 25 20 25 20 15

five

924009

6

Table 3

Composition Firing temperature, ° С Strength, MPa ! Bulk> mass, g / cm ³ / Water absorption,% Cold resistance, cycle bending under compression one 950. 1D, 8 28.6 1.48 14.9 100 1000 15.2 36.8 1.42 14.1 100 2 950 14.6 34.4 1.46 14.8 100 1000 16.8 41.1 1.42 14.2 100 3 950 15.2 32.4 1.45 14.85 100 1000 16.3 38.2 1.43 14.38 100

Claims (1)

Claim Charge a for the manufacture of construction products 20, including a spatula of electrothermophosphorus production, loess loam, plastic clay, and a burnable additive, characterized in that, in order to obtain large-sized 25 products, to increase the strength and reduce water absorption of the latter, it contains ashes the ratio of components, wt.%: ³⁰ Slag of electrothermophosphorus production 2 5-35 Loessy loam 20-30 Plastic clay 20-30'-, Ash 15-25.