SU975631A1 - Raw mix for producing binder - Google Patents

Description

(54) RAW MATERIAL MIXTURE TO OBTAIN A BINDER

1. The invention relates to the production of building materials, obtainable to the living. The known raw material mixture for obtaining a live substance obtained by burning at 950 ° C a solid residue of soda production waste and subsequent grinding of the calcined calcined product at a molar ratio of components C / S 0.5 1. The closest in technical essence and the achieved result to the invention the known raw material mixture for the preparation of a liquid, including a solid residue of soda production waste, containing 4-8% chlorides, silica, in an amount that ensures its content in baking, is 25-30%. The mixture is calcined at 1050-1100 ° C. In the calcination product before grinding, EXTRA silica is additionally silica in an amount of 30-50% of the mass of the binder 2. The disadvantages of the binder are low hardening rates at temperatures of minus 5 to plus 15 ° C, strength, water and frost resistance and corrosion resistance to corrosive n The purpose of the invention is to increase the rate of hardening at temperatures of minus 5 to plus, strength, water and frost resistance and corrosion resistance to the action of aggressive media. This goal is achieved by the fact that the raw mix for obtaining in Zhuyil, including the solid residue of soda production and the silica-containing component, additionally contains ferrotitanium sclac and phosphogypsum, and as a silica-containing component, fly ash, in the following component ratio, wt.%: Solid residue of soda production18-48 Ferrotitanium shlak18-48 Phosphogypsum4-8 Fly ash18-42 Chemical composition of solid residue from soda ash production, ferrotitanium slag and fly ash Kumertausko th CHP is presented in table. 1. For the preparation of a binder, the composition of a mixture consisting of solid residue of soda production waste, ferrotitanium slags, fly ash and phosphogypsum is prepared. These compounds

1 2 3 4 5 6 7

32 26 38 26 18 38 37 48 30

32 38 26 26 36 18 37 26 48

8 9

Studies of the phase composition of the resulting mixture by X-ray analysis show that it is represented mainly by calcium aluminates SA (, 97; m 2.52; 2.41; 2.20; 1.92 X), CyA (d 4.91; E, 00; 2.69; 2.45; 2.19; 1.95: X) belite, S (, 77; 2.72; 2.18; 1.97; 1.82 A), free amorphized silica . At the same time, the phase composition is known

raw mix represented by calcium oxide, belite | Ca5, traces of CijAv and quartz sand.

A solution of normal thickness is prepared from the inventive according to the invention and the time for setting at temperatures of -5 is determined; + 15 ° С.

The test results are presented in Table. 3. burn at 1100-1200 C. The composition of the mixture and the modes of their burning are given in table. 2.. The resulting calcination product is ground to a specific surface of 2500-3500. Table Out of a variety of compositions with a total ratio equal to the normal 45 density (0.35-0.45) samples are prepared, which harden at temperatures of minus n plus 15 ° C. The test results are shown in Table. 4. Table 4

faI Bending strength at age

TeepaeHHH temperature,

five

+15

-five

+15

-five

+15

-five

+15

-five

+15

-five

+15

-five

+15

Testing the timing of the scraper and strength characteristics of the known agent at temperatures of minus 5 ° C to the spit 15. The proeeskhi is not successful, since it is capable of hardening only under hydrothermal conditions.

Testing in the grip for setting time shows that it has an accelerated setting time for prt Ш1, positive and even negative temperatures.

The results of testing the strength of the stone from the inventive according to the invention show that, even at the age of one day, they are 610 kg / cm with minus 30-50 kg / cm with plus 15 ° C. This strength in a known composition can be achieved only under autoclave conditions. At a temperature of 15–20 ° C, the known suspect does not set for several days.

, С: 1 day, kg / cm

6.2

30.0

7.0

34.3

7.3

47.5

5.8

28.3

10.1

54.1

8.0

40.2

6.2

37.7

The phase composition of the products of hardening from the proposed binder is represented by hydroaluminates, hydrosulphaluminates, low basic hydrosilicates, which causes high strength and chemical resistance to the effects of various corrosive media.

The phase composition of the products of hardening known in the solid, which hardens under steaming conditions, is represented by hydrosilicates of the type CjSH (A), Ca (OH) 2, etc. The absence of free CaO in the proposed one and in the practical. This complete lack of it in the products of hardening causes a relatively low water demand for a perpetrator and a corresponding increase in water and frost resistance.

A comparative assessment of the water and frost-resistance of a stone from a well-known suspect, obtained under steaming conditions, and proposed in a persistent, hard at +15 C. is given in Table. five.

Claims (1)

The formula of the invention A raw material mixture for producing a binder, including a solid residue of soda waste and a silica-containing component, characterized in that, in order to increase the hardening speed at temperatures of minus 5 to plus 15 “C, strength, water and frost resistance and corrosion resistance to action aggressive environments, it additionally contains ferrotitanium slag and phosphogypsum, and as a silica45 containing component - fly ash, in the following ratio, wt.%: Solid residue of soda production waste18—48 Ferrotitanium slag 18-48 Phosphogypsum 4-8 Fly ash * 18-42