SU660954A1 - Raw mix for making silica brick - Google Patents

Description

The invention relates to the building materials industry, namely to compositions used to make silicate bricks. . The composition of the masses is widely known in the technology of building materials; quartz sand l is also known. Of the known raw material mixtures, the closest in technical essence and effect achieved is a raw material mixture comprising silica sand and lime in the following ratio of components, wt.%: Quartz sand92 Lime non-calcic calcium 8 2; and finished products. The aim of the invention is to increase the strength of the semi-finished and finished products. The goal is achieved by the fact that the raw mix, including quartz sand and lime, additionally contains clay-salt sludge (waste production of potash fertilizers) and ash in the following ratio, wt.%: Quartz sand 15-17 slime 30-45 Zola34-45. Clay-salt sludge (waste plant Velaruskali) dark gray color, muddy, plastic, has the following chemical composition given in Table 1 (wt.%). Table Chemical analysis of sludge in salt, (May.%)

CaSO I Mn. K, jSO4 KClNaCl j salts I ngO 3, 805 0.262 1.404 3.147 8.240 18.500 56.58 24.85 99.40 Particle size by fraction (m)

0.25 I 0.25-0.01, Olio, 01-0.005 0.005-0.001 0.001 0.0075.4724.53 3.71.119.73 Ash chemical composition (wt.%)

.. (1 - ,, grj-l

SiO., AlgO f 2 °

ttt -------- j - -

40.45 17.92 9.97 1.46 1.51 0.15. 25.55 2.60 96.61

Example 1, Raw materials with a mixture of 200 kgf / cm molded samples contain 15% of quartz sand, 45% with a measure of 50x50x50 mm, which are exposed. clay-salt sludge, 34% ash and heat treated in an autoclave under

6% calcium calcium quicklime. 30 pressure 8 atm for 8 h.

Clay salt sludge and ash Example 2 ,. Raw materials mix dry, grind and sow. Holds 16% of quartz sand, 40% through sieve No. 6, sand yrosyayut clay-mud sludge, 37% ash and sieve No. 2. Quicklime 7% quicklime calcium lime,

the activity of 72% is ground in a sharo-35. Preparation of materials, masses and bale-in mill to the residue on the sieve of samples is carried out similarly; egg 70 not more than 5%. Then, in a clay-like manner, as for composition 1. Salt sludge, ashes and sand are thorough - Sample, the raw material mixture but stirred is moistened to 10% - contains 17% silica sand, 30%

doi After that, Q slime of clay-salt, 45% of ground ash, ground lime, the mixture carefully and 8% of calcium lime, is added to the mixture, mixed and stored and prepared for the next 24 hours (until complete quenching is done in the same way as for lime). Then from the prepared composition 1, the composition of the raw materials

the masses by the method of pressing under pressure are given in Table 5.

Name of materials

Quartz sand .15 16 17

Clay-salt slime45 40 30

Zola34 37 45

Calcium Oxide Lime 678

6609544

table 2

Table3

Table4

Table 5

The numbers of the masses and compositions of the charge, wt.%

1ZI

Claims (2)

The physicomechanical properties obtained by the above sample and prototype technology are given in Table 6. From Table 6, it can be seen that, when sand is replaced in the silicate mass by slurry and ash, the strength of the semi-finished product increases by about 4 times the number of products is reduced by all stages of the production process of the products. The durability of the finished products increased:; more than twice compared with the known technical solution. The remaining indicators of the samples correspond to the limits of the scientific research institute stipulated by GOST. The invention Raw materials mixture for the manufacture of silicate bricks, including. quartz sand and lime, characterized in that, in order to increase the strength of the semi-finished product and finished products, it additionally contains clay-salt sludge, waste production of kg fertilizers, and ash in the following ratio of components, wt.%: 15 silica sand 17 Lime6-8 Clay-salt brine 30-45 Water 34-45 Sources of information taken into account during the examination 1.GOST 375-69. Building brick 2. Mukhina G.G. Production of silica brick, M., Higher School