SU43323A1 - The method of preparation of the composition for colored plaster - Google Patents

Description

A known method for producing colored plasters using natural colored marble powder as dyes, which limits the widespread use of colored plasters, since colored marble powder is obtained from colored marble.

The proposed method is based on the use of mineral dyes and the use of industrial waste.

The method consists in first grinding the mineral paint with marble powder, and then adding cement, slaked lime, sand, gravel, and a small amount of mica.

In order to obtain a uniform color of marble plaster, marble powder and mineral dye are loaded into a rotating mixer with metal blades at an angle of 45 ° with metal blades and mixed for 40-50 minutes until the color of the mass matches the color of the chosen standard. If, for example, minium is mixed with white marble powder, then in the first mixing period the color of the mass turns pinkish, in 12-20 minutes. the color of the mass becomes pink, after 20-25 min. - orange, and with further stirring (up to 50 min.) acquires a thick orange color.

Practical verification has proven that mixing in this way (281)

bakes the uniform color of any batch of colored plaster and makes it possible to very accurately determine the desired color, as well as a uniform intensity of color.

Then, the mixture is mixed in the blade broom of the coloring material with the remaining components, such as fluff, Portland cement, sand, gravel and mica in the following composition: marble powder, mineral paint - 16% by weight. parts, lime in the form of fluff -, Portland cement - 2%, river sand coarse - grained (1-2 mm) -40%, fine gravel (fraction 3-5 mm) - 35 °, mica-scale (fraction 2-5 ish) -IO / Q. The indicated composition according to the experiments performed provides a tensile strength of the b-8 KZJCM in 28 days. The kneading lasts 5-7 minutes, as a result of which the finished product is obtained in a dry form.

The river sand is dried to a moisture content of no more than /, / o, after which the bitch is fed to the sieve, where it is divided into two fractions of 1 mm and 2 mm; similarly, fine gravel and mica are sifted and sieved. Marble flour waste is fed to an ordinary millstone, driven by a motor, where it is milled into powder.

Waste from industry is used as a component. Marble

the powder is obtained from waste from chipping and cutting of marbles; mica in the form of scales is obtained as waste of mica, which goes to the manufacture of candles for aircraft engines; the aggregates are waste from stone-crushing plants, etc., which significantly reduces the cost of finished products.

The colored plaster obtained in dry form is dissolved in water to the consistency of a usual plaster (humidity 18%), after which it is applied to the wall using conventional methods. Upon the onset of seizure and the onset of hardening, after about 3-5 hours, depending on the weather, with the help of a special cycle, the top film is peeled off with freshly seized plaster. In this case, the fine gravel on the surface, which plays the role of a filler, falls out, leaving nests of larger or smaller sizes depending on the fraction.

The subject matter of the invention.

The method of preparing the composition for colored plaster, characterized in that the mineral paint used for this is first separately mixed and ground with fine powder of marble (marble powder) and then other components are added: cement, slaked lime, sand and gravel, as well as small amount of mica.