Method of producing porous aggregate

FIELD: chemistry.

SUBSTANCE: in a method of producing a porous aggregate, which includes preparation of a ceramic casting mixture, immersing aggregate particles into the mixture, drying said particles and firing, drying is carried out to moisture content of no more than 6%, firing is carried out at temperature of 850-1200°C and the aggregate used is natural vermiculite with particle size of 5-10 mm, wherein the mixture has the following composition, wt %: natural vermiculite 20-25, clay 24-30, water 45-50, colouring additive1-5. The method includes impregnating the porous aggregate with sodium ethyl siliconate or sodium methyl siliconate, followed by drying.

EFFECT: obtaining a light-weight, high-strength decorative porous aggregate.

2 cl, 3 ex

 

The invention relates to the production of porous aggregates, which can be used as a decorative and insulating fill.

A method of producing porous filler, providing training of ceramic casting slip, dip slip particles of filler, drying and firing [1].

The task of the invention to provide a light, durable and decorative porous filler.

The technical result is achieved by the fact that according to the production method of the porous filler, providing for the preparation of ceramic casting slip, dip slip particles of filler, drying and firing, drying is carried out until the moisture content less than 6%, calcination is conducted at temperatures of 850-1200°C, and as aggregate use natural vermiculite 5-10 mm, and the slurry has a composition, wt.%: natural vermiculite 20-25; clay 24-30; water 45-50; coloring additive 1-5. Porous filler impregnated with ethylsilicate sodium or potassium methyl siliconate, followed by drying.

The method is illustrated by the following examples.

1. Prepare and passed through mesh No. 008 ceramic casting a slurry of the following composition, wt.%: natural vermiculite 25; clay (white burning) 24; water 50; coloring additive (cobalt oxide) 1. Natural vermiculite crushing and fractionary is. The obtained particles (fraction 5-10 mm) immersed in a container with slip. Then remove particles from the slip (strain it through a mesh), dried to a moisture content of not more than 6% and calcined at a temperature of 1200°C.

2. Prepare and passed through mesh No. 008 ceramic casting a slurry of the following composition, wt.%: natural vermiculite 20; clay (brick) 30; water 45; coloring additive (pyrolusite) 5.

Natural vermiculite crushing and fractionary. The obtained particles (fraction 5-10 mm) immersed in a container with slip. Then remove particles from the slip (strain it through a mesh), dried to a moisture content of not more than 6% and calcined at a temperature of 1200°C.

3. Prepare and passed through mesh No. 008 ceramic casting a slurry of the following composition, wt.%: natural vermiculite 23; clay (fusible) 26; water 49; coloring additive (ochre) 2. Natural vermiculite crushing and fractionary. The obtained particles (fraction 5-10 mm) immersed in a container with slip. Then remove particles from the slip (strain it through a mesh), dried to a moisture content of not more than 6% and calcined at a temperature of 850°C.

In the process of burning natural vermiculite expands and is sintered with forming on its surface a colored ceramic layer. The result is a lightweight, durable and decorative porous filler. Possible subsequent impregnation(for example, by immersing 1-3 with the capacity and subsequent straining through a mesh) obtained aggregates ethylsilicate sodium or potassium methyl siliconate, followed by drying at a temperature of 40-55aboutC.

The source of information

1. EN 2081080, 1997.

1. Method of manufacturing porous filler, providing for the preparation of ceramic casting slip, dip slip particles of filler, drying and firing, characterized in that the drying is carried out until the moisture content less than 6%, calcination is conducted at temperatures of 850-1200°C, and as aggregate use natural vermiculite 5-10 mm, and the slurry has a composition, wt.%: natural vermiculite 20-25, clay 24-30, water 45-50, coloring additive 1-5.

2. Method of manufacturing porous filler under item 1, wherein the porous filler is impregnated with ethylsilicate sodium or potassium methyl siliconate, followed by drying.



 

Same patents:

FIELD: construction.

SUBSTANCE: raw mixture for production of coarse aggregate shell contains, wt %: Portland cement 30.0-35.0; casein glue 4.0-7.0; fly ash 28.0-31.0; water 30.0-35.0.

EFFECT: increase of bonding strength of shell with the surface of the coarse aggregate.

1 tbl

Filler for concrete // 2528809

FIELD: construction.

SUBSTANCE: filler for concrete is made in the form of grain of round shape, having a cavity 3, formed by means of adhesion of two parts 1 and 2, made from clayey raw materials by moulding with subsequent baking, with a porous body 4 placed in the cavity 3, produced in process of baking of adhered parts 1 and 2 by foaming of foam glass charge including the following components, wt %: ground silicate glass 93-97 and gasifier - chalk or marble or coke 3-7, besides, at least one of parts is perforated 5.

EFFECT: production of a light strong filler having heat insulation properties, simplified technology of its manufacturing.

1 dwg, 1 tbl

FIELD: construction.

SUBSTANCE: raw mix to make a shell of a coarse filler used to decorate flower gardens and flowerbeds contains the following components, wt %: liquid glass with density of 1300-1500 kg/m3 30-35, urea 5-15, water 30-35, mineral filler 20-30.

EFFECT: making a shell suitable for application onto surface of coarse filler used for decoration of flower gardens and flowerbeds in spring and summer, with its subsequent decomposition in autumn and winter and soil fertilisation.

1 tbl

FIELD: construction.

SUBSTANCE: from a ceramic mass they form granules with subsequent drying and baking. Glazing suspension is applied onto surface of granules, where they add fine quartz sand and/or fine corundum sand in the amount of 5-30% of its mass. The layer of glazing suspension is melted.

EFFECT: increased adhesion of haydite gravel with glazing coating to cement stone.

1 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to production porous aggregates for concrete. In the method of producing a porous aggregate, which involves preparation of a ceramic casting mixture, immersing aggregate particles into the mixture, drying said particles and firing, drying is carried out to moisture content of 1-8 %, firing is carried out at temperature of 1100-1200°C and the aggregate used is natural schungite, wherein the mixture has the following composition, wt %: natural schungite 10-15, flue ash 10-15, clay 25-30, water 45-50.

EFFECT: obtaining light and strong porous aggregate.

2 ex

FIELD: construction.

SUBSTANCE: raw material mixture for manufacturing of coarse aggregate envelope contains the following components, wt %: portland cement 36.5-43.5; urea 0.2-0.3; casein adhesive 2.5-3.0; quartz sand or marshalit 15.0-20.0; phenylethoxysiloxane 0.2-0.3; water 36.0-40.0.

EFFECT: improving water resistance of coarse aggregate envelope.

1 tbl

FIELD: construction.

SUBSTANCE: raw material mixture for manufacturing of coarse aggregate envelope contains the following components, wt %: portland cement 33.5-42.8; urea 0.7-1.3; casein adhesive 2.5-3.0; quartz sand or marshalit 15.0-20.0; natrium ethyl siliconate or natrium methyl siliconate 2.5-3.0; water 36.0-40.0.

EFFECT: improving water resistance of coarse aggregate envelope.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of building materials, specifically to compositions of crude mixtures for making building articles, and can be used in production artificial building stone by pressing. The technical result is achieved owing to that 5% acrylic acid solution is used as the modifier of screenings from crushing carbonate rocks. The mixture for making artificial building stone consists of screenings from crushing carbonate rocks, portland cement and water. According to the invention, at least 15 minutes before preparation, the screenings from crushing carbonate rocks are treated with 5% acrylic acid, followed by addition of portland cement and water, with the following ratio of components, wt %: portland cement 20-30, screenings from crushing carbonate rocks 70-80, said modifier solution 13±1 of the mass of screenings from crushing carbonate rocks, water 13±1 of the mass of portland cement.

EFFECT: high strength of the artificial building stone with low cement consumption.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of construction materials. The crude mixture for making coarse porous aggregate coating contains the following, wt %: portland cement 25.0 - 30.0, urea 0.4 - 0.6, casein adhesive 0.4 - 0.6, quartz sand 23.4 - 33.6, potash 0.4 - 0.6, water 30.0 - 45.0. The crude mixture can further contain 5-15 wt % of a mineral colouring additive.

EFFECT: reduced consumption of portland cement, improved adhesive properties of the cladding to the surface of the aggregate.

2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to production of artificial coarse porous aggregates. The method of making claydite gravel involves preparing a ceramic mixture, moulding gravel, applying a 0.3-0.7 mm thick layer of volcanic ash onto the surface of moulded gravel, drying the gravel to moisture content of not more than 7%, firing and cooling.

EFFECT: high strength of adhesion of the aggregate with hardened cement paste.

2 ex

FIELD: chemistry.

SUBSTANCE: mixture for making porous aggregate contains, wt %: montmorillonite clay 94.0-99.0, dry peat which is ground and sieved through sieve N2.5 0.5-3.0, borax 0.5-3.0.

EFFECT: high strength of the porous aggregate made from the mixture.

1 tbl

FIELD: construction.

SUBSTANCE: charge for production of a porous filler contains, wt %: montmorillonite clay 81.0-87.5, dolomite 2.0-3.0, 3% solution of hydrogen peroxide 0.5-1.0, quartz sand 10.0-15.0.

EFFECT: increased strength of a porous filler produced from charge.

1 tbl

FIELD: construction.

SUBSTANCE: charge for production of a porous filler comprises, wt %: montmorillonite clay 82.0-86.0, ground schungite sifted via a net with hole size of 2.5 mm 8.0-10.0, ground wollastonite sifted via a net with a hole size of 2.5 mm 6.0-8.0.

EFFECT: increased strength of a porous filler produced from charge.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to inorganic finely dispersed materials and specifically to hollow glass-lined microspheres based on expanded pearlite. In the method of producing expanded pearlite-based microspherical filler, which includes dry grinding starting material, heat treatment thereof and subsequent expansion, heat treatment of the starting material is carried out before grinding, and 2-3 wt % of a suspension of a carbon-containing liquid and a glass-forming additive, ground to particle size smaller than 2 mcm, are further added to the mixture during grinding, wherein content of said glass-forming additive is 0.2-0.5% of the weight of pearlite. For more uniform deposition of the carbon-containing liquid and the glass-forming additive on the surface of the pearlite microparticles, a surfactant selected from a group of cationic surfactants can be added to the suspension. To further reduce water absorption after expansion, the microspheres can further be treated with a water repellent.

EFFECT: obtaining a high-strength and hydrophobisated microspherical filler.

3 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: charge for a porous filler production contains, wt %: montmorillonite clay 79.0-86.0, quartz sand 13.0-16.0, dry peat, milled to complete passing through a mesh with the size of holes of 2.5 mm 1.0-5.0.

EFFECT: increased strength of the porous filler.

1 tbl

FIELD: chemistry.

SUBSTANCE: fusion mixture for the production of porous filler contains, wt %: montmorillonite clay 94.5-97.5, coal 2.0-4.0, a micro-foaming agent BS and/or a micro-foaming agent OS preliminarily diluted in hot water at a temperature of 85-95°C 0.5-1.5.

EFFECT: improved structure of the porous filler, obtained from the charge.

1 tbl

FIELD: food industry.

SUBSTANCE: mixture for making porous aggregate includes, wt %: low-melting clay 70.0-76.0, oil sludge 8.0-10.0, flax shive ground until passage through sieve N5 10.0-16.0, liquid glass 4.0-6.0.

EFFECT: low firing temperature of the porous aggregate.

1 tbl

FIELD: chemistry.

SUBSTANCE: crude mixture for making artificial porous aggregate contains, wt %: low-melting clay 81.2-84.6, sulphite-alcohol wort 0.6-0.8, kaolin 0.6-0.8, zinc oxide 0.6-0.8, fly ash 13.0-17.0.

EFFECT: high strength of the artificial porous aggregate.

1 tbl

FIELD: construction.

SUBSTANCE: raw mixture to obtain a granular insulation material contains, by wt %: microsilica 33.5-45, ash and slag mixture 3.0-14.5, apatite-nepheline ore tailings 25-30, sodium hydroxide (in Na2O equivalent) 22-27, ammonium bicarbonate 0.5-1.5. The invention is evolved in dependent claims.

EFFECT: improvement of strength of granular insulation material while reducing its water absorption, utilization of man-made waste.

4 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to inorganic fine materials, specifically to hollow glass-lined pearlite-based microspheres, and can be used in producing microspheres from other acidic hydroalumosilicates. In the method of making hydrophobic light-weight microspherical pearlite-based aggregate, which includes preparing a starting mixture, grinding said mixture, preparing a slurry, simultaneously moulding and drying granules, expanding said granules, the slurry is prepared by combined grinding of pearlite, ascharite, lithium carbonate and strontium carbonate in 2-3% NaOH solution to particle size of less than 5 mcm, with the following ratio of components, wt %: Ascharite - 2-4; lithium carbonate - 0.2-3; strontium carbonate - 0.2-3; pearlite - the balance, and the granules are moulded and dried by feeding the slurry through a sprayer with calibrated orifices into a tower-shaped spray dryer to obtain granules with moisture content of less than 0.9 wt % at the output.

EFFECT: obtaining hardened and hydrophobic granules.

1 tbl

FIELD: building industry; other industries; methods of production of the vesicular mica.

SUBSTANCE: the invention is pertaining to the treatment by splitting of the easily laminated micas, in particular, the vermiculite, the phlogopite and others. The technical result of the invention is the decreased bulk apparent density and the increased volume of the vesicular mica. The method of production of the vesicular mica includes the treatment of the initial mica with the hydrogen peroxide with the following thermal treatment. The treatment is conducted with the hydrogen peroxide having its concentration of 36-50 %. The produced mixture is aged till the mixture temperature drops to the room temperature, and the thermal treatment is conducted at 150-300°С with provision of the volumetric increase of the initial mica in 25-43 times.

EFFECT: the invention ensures the decreased bulk apparent density and the increased volume of the vesicular mica.

8 cl, 3 ex

Up!