Method for production of mineral wool boards

FIELD: technological processes.

SUBSTANCE: invention is related to production of mineral wool products, namely to methods for production of multi-layer mineral wool boards. Method includes compaction of primary mineral wool carpet, its horizontal longitudinal cutting into layers by thickness of the first cut layers of primary carpet, which is equal to thickness of the first board layer, the second layer of primary carpet is additionally compacted to density of the second board layer, shaping of double-layer carpet, supply of binding agent, thermal treatment. Thickness of the second layer of the primary carpet is arranged as equal to where h3 is thickness of the second layer of board, ρ1 is density of the first board layer, ρ3 is density of the second board layer.

EFFECT: increased quality of mineral wool boards.

1 dwg

 

The invention relates to the production of mineral wool products, and in particular to methods of manufacturing multi-layer of mineral wool.

Known processes for the production of mineral wool combined structure, in particular, consisting of layers of different density [Tobolsk GF, beavers UL Mineral wool insulation and their application in the harsh climate. HP: stroiizdat, Leningrad branch, 1981, pp.31...32].

These methods include sealing the primary mineral wool fabric, its horizontal longitudinal cutting layers in thickness and processing one of the layers to give it the desired patterns, the formation of the Mat, applying a binder and a heat treatment. Using these methods you can get mineral wool combined structure, including double-layer plates with different density layers. However, information about the speed and deformation modes of the implementation process in these materials is missing.

The closest in technical essence and the achieved effect is a method of manufacturing a cured non-woven mineral fiber and a device for its implementation [RF patent 2152489 (13) C1. A method of manufacturing a cured non-woven cloth made of mineral fabric and device for its implementation./Nerger Luis Yergin, brand Kim, creed is Anne, Ian, publ. 2000.07.10].

In materials of this invention also include information about obtaining a multi-layered, including double layer of mineral wool produced by the compression of the primary carpet cut carpet layers, the operations of sealing one of the layers, their connection with the filing of a binder and a heat treatment. Any information about the deformation modes of the layers, the high-speed modes in these materials is missing.

The disadvantage of this method are low quality plates and limited performance due to the lack of technological regimes, providing a double layer of mineral wool with a given density layers in a continuous process mode.

The objective of the invention is to improve the quality double layer of mineral wool and improve performance.

This object is achieved in that in the known method for the production of mineral wool, mainly two layers with different density layers including a primary seal mineral wool carpet, its horizontal longitudinal cutting layers in thickness when the thickness of the first cut of the layers of the primary carpet equal to the thickness of the first layer plate, the second layer of the primary carpet additionally compacted to the density of the second layer of the plate, forming a two-layer carpet, the supply of the binder, the black processing, according to the invention the thickness of the second layer of the primary carpet perform equalwhere h3the thickness of the second layer of the plate, ρ1the density of the first layer of the plate, ρ3the density of the second layer of the slab.

The implementation of such a regime slitting primary mineral wool carpet layers, provides, firstly, the effective receipt of the first layer of two-layer plate which does not require additional sealing, secondly, allows you to have a second layer thickness, when the seal which is the condition of equality of the velocities of the first layer and the second layer before and after deformation. This is a necessary condition of operation continuous production line of a double layer of mineral wool. At the same time provides the required density of the second layer of the Mat after an additional seal, allowing you to obtain a double-layer plate of high quality.

Thus, the use of a known process operations with new technological modes and operations additional seals one of the layers of the Mat provides obtaining a two-layer mineral wool boards with specified quality parameters in high-performance continuous flow mode.

The proposed method for the production of mineral wool proil Ustinova in the drawing. The diagram shows the sequence of technological operations in the implementation of the proposed method.

The method is as follows. In the chamber 1 to form the primary carpet thickness h with density ρ, equal to the density ρ1the lower layer of the plate, with lower density, the primary carpet moves with velocity V (in the drawing and hereinafter referred to as the first layer of the Mat and the plate placed at the bottom, and the second layer of the Mat and the plate are at the top.) Then carry out a horizontal cutting of the carpet with a special device 2 (a rope or a saw) layers of thickness h1and h2. The thickness of the bottom layer of the Mat h1equal to the thickness of the resulting plate. The thickness of the upper layer h2is determined by the formulaobtained from the condition of equality of the velocity of the lower layer of thickness h1and the top layer to h2and after h3seal it to the density ρ3for more forming rollers 3. The thickness of the primary carpet is determined from the condition. The moving speed of the primary carpet, the speed of movement of the layers of the plate after slitting and additional seals marked V.

After exiting the forming rollers 3 of the upper layer of the Mat is laid on the bottom and jointly move for the heat of the processing in the chamber 4, at the exit from which is obtained a two-layer mineral wool slab with given characteristics.

For example, according to the specifications set the following characteristics desired for the production of two-layer mineral wool.

The density of the lower layer of the plate - ρ1=135 kg/m3.

The density of the upper layer of the plate - ρ3=210 kg/m3.

The thickness of the lower layer of the plate h1=80 mm

The thickness of the upper layer of the plate h3=25 mm

According to the formula above, is determined by the height of the primary mineral wool carpet.

Received mineral wool carpet thickness of 118.8 mm cut into layers: thickness h1=80 mm, h2=38,8 mm, Then the upper layer is compacted to a thickness of h3=25 mm, the upper layer is laid on the bottom, served binder, conducting heat treatment and receive a two-layer mineral wool slab with thickness 105 mm

Similarly can be obtained mineral wool slab with a large number of layers, for example three-layer plate. For this purpose mineral wool carpet is cut into three layers. The first two layers of the plates get similar two-layer version, and the third layer 25 mm thick, disposable, for example, below the lower layer of the plate, get similarly the upper layer of the plate. For such a three-layer plate primary mineral wool carpet thickness 157,6 mm PE the ut layer thickness 38,8 mm; 80 mm; 38,8 mm Layers of the Mat thickness 38,8 mm additionally compacted to a thickness of 25 mm, Then layers were combined, serves binder, conducting heat treatment and receive a three-layer mineral wool slab with thickness of 130 mm

Thus, the proposed method of manufacturing multi-layer of mineral wool, due to the given processing conditions, provides high-quality products and high efficiency continuous production line.

Method for the production of mineral wool, mainly two layers with different density layers including a primary seal mineral wool carpet, its horizontal longitudinal cutting layers in thickness when the thickness of the first cut of the layers of the primary carpet equal to the thickness of the first layer plate, the second layer of the primary carpet additionally compacted to the density of the second layer of the plate, forming a two-layer carpet, submitting a binder, a heat treatment, characterized in that the thickness of the second layer of the primary carpet perform equal
,
where h3the thickness of the second layer of the slab;
ρ1the density of the first layer of the slab;
ρ3the density of the second layer of the plate.



 

Same patents:

FIELD: construction.

SUBSTANCE: multilayer acoustic panel contains a frame with arranged inside its internal cavity noise-attenuating insert. The frame is made as a parallelepiped, formed by the front and back walls of the panel, each whereof is flat-topped. On the front wall there is a slatted perforation. Walls of the panel are fixed against each other with vibration damping covers. Perforation coefficient of the front wall is accepted equal to or more than 0.25. Noise-attenuating insert is made integral or consisting of, at least, two layers of noise-attenuating panels, each whereof is perforated at an angle of α=50°-80° against its surface. Axes of perforation openings of adjoining panels are arranged at a 1.5 α angle against each other. Front and back walls of the frame of noise-attenuating elements are made of stainless steel or galvanised sheet of 0.7 mm thick with polymeric protective-decorative coating of 50 mcm or 25 mcm thick, or of aluminium sheet of 1.0 mm thick and with the coating of 25 mcm thick. Ration of the height h of the frame to its width is within the optimal values ratio: h/b=1.0-2.0. Ratio of the value of the frame thickness s' in full assembly to its width b is within the optimal values ratio; s'/b-0.1-0.15. Ratio of the value of the thickness s of noise-attenuating material to the thickness of the fame in full assembly s' is within the optimal values ratio: s/s'=0.4-1.0.

EFFECT: improved noise-attenuation characteristics of the panel.

6 cl, 2 dwg

FIELD: technological processes.

SUBSTANCE: invention is related to production of mineral wool products, mostly strips and plates with combined structure. Method includes preparation of mineral wool carpet with horizontal position of fiber with binder, carpet displacement, its corrugation, arranging of corrugations, longitudinal cutting of carpet along width in parts, installation of carpet parts on above another, hardening. Carpet corrugation is realised by means of single-sided crumpling. Longitudinal cutting of carpet is carried out into two parts. Prior to installation one above another both parts of carpet are turned around their longitudinal axes for angle of 180 degrees, with change of the first carpet part displacement direction by angle 180>α>0 degrees, and the second carpet part - by angle of 360>γ>180 degrees. The second part of carpet is additionally turned around its longitudinal axis at the angle of 180 degrees, with change of direction of its displacement by angle (γ+α) in reverse direction and is laid under the first part of carpet. Corrugation of mineral wool carper is carried out at sharp angle β in direction of its displacement.

EFFECT: simplified technology and increased quality of mineral wool strips and plates with combined structure.

6 dwg, 2 cl

FIELD: textiles.

SUBSTANCE: present invention relates to production of mineral-cotton items, mainly multilayered items. The method involves making a mineral-cotton mat, moving it, slitting the mat into strips across the width, changing the shape and dimensions of the cross section of the strips, stacking the strips, moving them together and hardening. Before stacking ((n-1), where n is the number of strips, cut from the mineral-cotton mat) the strips are twice turned about their longitudinal axes by 180 degrees. After each turn, the direction of movement of the said strips in the plane of the mat is changed by an angle 180>α>0 degrees. Angles α, which characterise change in direction of movement of each strip, are equal to each other.

EFFECT: simplification of the process of making multilayered mineral-cotton items.

1 dwg

FIELD: construction.

SUBSTANCE: primary element for heat and sound insulation panel is made of mineral wool or asbestos mat in the form of parallelepiped having two main sides and longitudinal edges and consisting of multiple fibers. Fibers are impregnated with binder. Primary element comprises relief zone at the level of at least one of its longitudinal edges. Relief zone is arranged with the possibility of laying bent part of cladding coat on it, at that the coating is tightly adjacent to its surface. Relief zone is arranged in part of mat thickness next to the first main side of mat. Relief zone limits two neighbouring zones. Cladding coating may be fixed to the first main side of mat, which is inverted outside from closed space. Cladding surface is not flanged to the second main side of mat, which is directed inside closed space.

EFFECT: provision of fire safety barrier, heat and sound insulation and resistance to breakout power.

28 cl, 7 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to dressing compositions based on mineral fibre, containing epoxy resin of glycidyl ether type, amino-containing hardener and accelerator-imidazol, imidazoline, their mixture.

EFFECT: improved mechanical properties of materials after aging.

17 cl, 1 tbl, 1 ex

FIELD: technological processes.

SUBSTANCE: method includes preparation of primary carpet with horizontal position of fibers, displacement of primary carpet, longitudinal cutting of carpet into layers, corrugation, layout of corrugations, connection of layers, hardening. Carpet corrugation is done by periodic opposite impression of the primary carpet with provision of links between corrugations. Longitudinal cutting into layers is done in the middle between corrugations. Prior to connection every layer is turned by angle of 180° around its longitudinal axis, and they are displaced together at the angle of 180°>α>0 in direction of primary carpet displacement.

EFFECT: simplification of manufacturing technology and improved quality of mineral wool boards and strips with combined structure.

3 dwg

Insulation material // 2346116

FIELD: construction.

SUBSTANCE: invention is related to insulation material for use in construction, heat engineering, motor industry and shipbuilding. Insulation material comprises external layer of insulation material, which is the first layer made of flexible elastic moisture-proof material, which is firmly fixed to layer of fiber or porous structure material inverted to the side of insulated surface, which is the second layer impregnated with liquid or gel-like single-component polyurethane and is coated with the third removable layer of moisture-proof film. Prepared insulation material has good insulation properties combined with impermeability for external impact of external surface.

EFFECT: provision of waste-free and safe application of material on insulated surface of any complex shape.

1 dwg

FIELD: construction.

SUBSTANCE: invention is related to insulating devices, in particular, to plates with sound-absorbing coating, and may be used in machine building, ship building, construction and other industries. Soundproof panel of fan body includes metal sheets with sound-absorbing layer installed between them and bordered with elastic gaskets that are rigidly fixed with metal sheets. Sound-absorbing layer is made of air-penetrable material with density of not more than 100 kg/m3. Ratio of metal sheet area occupied with gaskets to the total area of the sheet does not exceed 20%. Metal sheets are fixed to gaskets with self-tapping screws, at that self-tapping screws of one metal sheet fastening do not contact self-tapping screws for fastening of the opposite metal sheet.

EFFECT: increase of sound proofing, reliability at low cost.

2 dwg

FIELD: construction.

SUBSTANCE: plate for fastening of building facing panel installed in power belt that is arranged on the building bearing wall is arranged with slots and contains fastening L-shaped grips, which spring-load facing panels, at that grips are installed vertically in pairs, and top grip of every pair is installed motionlessly. There are slots in groove that allow vertical moving of bottom grips in case of temperatures differences during building operation, and forges for spring-loading of facing panels and their tight abutment. Forges are made thicker than thickness of bottom grips by thickness in order to provide guaranteed clearance and freedom of bottom grips movement.

EFFECT: provision of even and tight laying of facing panel, heat and moisture insulation of building wall and ventilation.

2 cl, 6 dwg

FIELD: construction.

SUBSTANCE: plate for fixing a lining panel of a building consists of locking tabs fitted vertically in pairs and spring-loaded lining plates. The upper and lower tabs are immovable and cavated and forward bent from the panel. The lower tab has a rectangular shape. The root of the upper tabs is broached into an isosceles trapezium, on the upper base of which there is a superstructure, broached into a rectangle, or some other shape. The clearance for the tabs has a larger width than the tabs on the value of the rounded radius of clearance angles.

EFFECT: more effective fixing of lining panels of buildings.

2 cl, 4 dwg

FIELD: construction.

SUBSTANCE: method of manufacturing of cement panels with pressed in fibers, making use of the following expression: for determination of square area of the part of the area of projected surface of fibers in the ready panel, whereat the method presupposes: securing required capacity factor of fibers of the cement mortar Vf; securing thickness of the layer of cement mortar ts,l within the range from1.27 mm - 5.08 mm; adjustment of, at least, one diametre of fiber df and thickness of the layer of cement mortar ts,l so that, rate of the area of fibers surface makes less than 0.65; securing feeding of expanded, separate fibers, presented by Vf fiber capacity factor, calculated from the above computed rate of fibers area SPf,l; securing moving cloth; application of cement mortar on to the cloth; application of the fed, expanded, separate fibers on to cement mortar; and pressing expanded, separate fibers into cement mortar so that fibers are distributed evenly along the cement mortar.

EFFECT: enhanced strength of panels.

7 cl, 5 dwg

FIELD: technological processes.

SUBSTANCE: invention is related to production of mineral wool products, mostly strips and plates with combined structure. Method includes preparation of mineral wool carpet with horizontal position of fiber with binder, carpet displacement, its corrugation, arranging of corrugations, longitudinal cutting of carpet along width in parts, installation of carpet parts on above another, hardening. Carpet corrugation is realised by means of single-sided crumpling. Longitudinal cutting of carpet is carried out into two parts. Prior to installation one above another both parts of carpet are turned around their longitudinal axes for angle of 180 degrees, with change of the first carpet part displacement direction by angle 180>α>0 degrees, and the second carpet part - by angle of 360>γ>180 degrees. The second part of carpet is additionally turned around its longitudinal axis at the angle of 180 degrees, with change of direction of its displacement by angle (γ+α) in reverse direction and is laid under the first part of carpet. Corrugation of mineral wool carper is carried out at sharp angle β in direction of its displacement.

EFFECT: simplified technology and increased quality of mineral wool strips and plates with combined structure.

6 dwg, 2 cl

FIELD: textiles.

SUBSTANCE: present invention relates to production of mineral-cotton items, mainly multilayered items. The method involves making a mineral-cotton mat, moving it, slitting the mat into strips across the width, changing the shape and dimensions of the cross section of the strips, stacking the strips, moving them together and hardening. Before stacking ((n-1), where n is the number of strips, cut from the mineral-cotton mat) the strips are twice turned about their longitudinal axes by 180 degrees. After each turn, the direction of movement of the said strips in the plane of the mat is changed by an angle 180>α>0 degrees. Angles α, which characterise change in direction of movement of each strip, are equal to each other.

EFFECT: simplification of the process of making multilayered mineral-cotton items.

1 dwg

FIELD: construction.

SUBSTANCE: invention is related to the field of fibrous materials production on the basis of fire-resistant fibers used for manufacture of heat insulation, soundproof and filtering products. Binder for fibrous materials contains the following components, wt %: Siliceous "КЗ-ТМ" 10-90, sterol-acryl emulsion "Рузин 14 ГМ" 10-90, at the ratio of Siliceous and sterol-acryl emulsion density equal to 0.9-1.1.

EFFECT: increased quality, expansion of binder application field and base of materials for its production.

1 cl, 2 tbl

FIELD: technological processes.

SUBSTANCE: method includes preparation of primary carpet with horizontal position of fibers, displacement of primary carpet, longitudinal cutting of carpet into layers, corrugation, layout of corrugations, connection of layers, hardening. Carpet corrugation is done by periodic opposite impression of the primary carpet with provision of links between corrugations. Longitudinal cutting into layers is done in the middle between corrugations. Prior to connection every layer is turned by angle of 180° around its longitudinal axis, and they are displaced together at the angle of 180°>α>0 in direction of primary carpet displacement.

EFFECT: simplification of manufacturing technology and improved quality of mineral wool boards and strips with combined structure.

3 dwg

FIELD: building.

SUBSTANCE: inventions concern to wall elements and also ways of their manufacturing. The wall element for manufacturing of external walls of the buildings, having the integral design consisting of a slab-basis, executed from a levigated plant material and mineral substances, and an isolation slab executed from thermal insulation material not interfering diffusion. Thereat recesses are executed under load-carrying structure elements in the slab-basis, in particular in the form of wooden racks. Also versions of methods of its manufacturing are described.

EFFECT: reduction of terms of building and increase of heat-insulating properties.

23 cl, 3 dwg

FIELD: construction.

SUBSTANCE: method of obtaining decorative construction products involves dosing the bonding substance, water, filler material, and their mixture, insertion of fibrous material, moulding and hardening. The fibrous material is in the form of twisted mineral fibres an on the moulding stage it is put in the mixture with formation of a dotted contour of the drawing on the surface of the product. The twisted mineral fibres in the product can be laid in parallel, as well as at an angle to each other.

EFFECT: increased durability of decorative construction products, made with dotted drawings on their surface.

2 cl, 3 dwg

FIELD: manufacture of building materials; preparation of mixes for production of composite materials; facing the building fronts including fibrous cement large-sized slabs.

SUBSTANCE: proposed method includes mixing of 100 parts by mass of cement, 0.8-8 parts by mass of reinforcing fibers, 10 parts by mass of micro-filler, 0.5-1.5 parts by mass of plasticizing additive, 14-20 parts by mass of water, 3-10 parts by mass of acryl copolymer, 0.5-1.5 parts by mass of hardening agent for acryl copolymer and 3-5 parts by mass of mineral pigment. First, liquid component is prepared in activator-mixer from water, plasticizing additive, reinforcing fibers, acryl copolymer, acryl copolymer hardening agent and mineral pigment; then, reinforcing fiber is subjected to fluffing-up, after which micro-filler is introduced in the amount of 15-35% of total amount of cement required for preparation of mix. Then, liquid component is transferred to planetary mixer where it is mixed with cement or with its remaining part till working consistency of mix. Used as plasticizing additive is super-plasticizing agent C-3 on base of naphthalenesulfonic acid and formaldehyde; used as acryl copolymer is acryl monomer emulsion МБМ-5C; used as acryl copolymer hardening agent is lime; used as micro-filler is micro-silica at average diameter of granules of 0.3-3.0 mcm; used as reinforcing fibers are glass fibers at addition of 10-15% of fine asbestos fibers of Grade 4-5 or fluffed-up cellulose. For realization of this method, use is made of molds with flexible pans.

EFFECT: possibility of obtaining placeable and moldable mix; enhanced strength and density of articles made from this mix; smooth surfaces of articles.

7 cl, 1 tbl, 1 ex

FIELD: propulsion engineering; methods of filling-up of the cavities in the products with the heat-insulating material.

SUBSTANCE: the invention is pertaining to the high-temperature technique, in particular, to manufacture of the thermal insulation by filling-up with the heat-insulating material of the cavity in the product, for example, in the unit of the guiding vanes or in the gas-turbine engine body. The technical result of the invention is the possibility of filling-up with the heat-insulating material of the cavities of the different cross-section and the curvature with the complex relief of the surfaces of the components forming the cavities and formation of the heat-insulating layer resistant against the long-term high-temperature and against the vibration impacts. The method of filling-up of the cavity in the product formed by the surfaces of the components composing the product provide for arrangement in the cavity at least of one component of the raw mixture for production of the heat-insulating material containing the filling agent made out of the mineral fiber or the vermiculite and the binding, drying of the applied raw mixture and the following thermal treatment after the product assemblage. In the capacity of the binding use the organic water-containing binding: the aqueous emulsion of the polyvinyl acetate with the concentration of 7-30 mass % or the aqueous gel with the contents of the guar gum of 0.06-1 mass %, at the following composition of the raw mixture (in mass %): the vermiculite - 43-45, the aqueous emulsion of polyvinyl acetate with the concentration of 7-30 mass % - 55-57 or the mineral fiber in the form of the fragments of the linen or the cotton-wool or the mat - 10-12, the aqueous gel with the contents of the guar gum of 0.06 - 1 mass % - 88-90. The raw mixture is arranged by pressing at the manual prepressure and the surface flattening. The drying is conducted at the temperature of 100-240°С with production of the layer adhered to the surface of the cavity. The thermal treatment after the assembling execute at the temperatures of no less than the temperature of decomposition of the organic water-containing binding.

EFFECT: the invention ensures the possibility of filling-up with the heat-insulating material of the cavities of the different cross-section and the curvature with the complex relief of the surfaces of the components forming the cavities and formation of the heat-insulating layer resistant against the long-term high-temperature and against the vibration impacts.

3 cl, 1 tbl, 2 ex, 1 dwg

FIELD: manufacture of building materials; manufacture of decorative finishing articles or plate warmth-keeping material for two-layer decorative finishing plates for facing the fronts.

SUBSTANCE: proposed method for preparation of fibrous cement material includes mixing of cement binder, sand, fibers, polymer binder, water plasticizing additive and pigment; surfactant is introduced into mix for fluffing of fibers; then, anti-foaming agent is introduced for reducing the amount of air pores. The ratio of components per 100 parts by mass of cement binder is as follows: 20-30 parts by mass of sand; 0.8-6 parts by mass of glass fibers, 12 and 6 mm long, 30% and 70% respectively; 3-10 parts by mass of polymer binder ACREMOS-512; 15-30 parts by mass of water; 0.5-1.5 parts by mass of superplasticizing agent C-3; 3-5 parts by mass of pigment; 0.01-0.03 parts by mass of PIONEER-128 superplasticizing agent and 0.03-0.8 parts by mass of PENTA-471 anti-foaming agent. First, water, plasticizing agent and surfactant are poured into mixer; then sand is poured and fibers are fluffed, after which pigment is introduced, polymer binder and anti-foaming agent are poured; then cement binder is poured and mixing is started.

EFFECT: enhanced spreadability of mix and improved physico-mechanical properties of articles.

4 cl, 2 tbl, 1 ex

FIELD: manufacture of large-size cement-fiber plates used for facing buildings and making roof covering.

SUBSTANCE: method comprises steps of mixing cement, sand, micro-filler, reinforcing synthetic fibers, plasticizing additive and water; shaping and drying; using wollastonite as micro-filler. At first in turbulence mixer dry loose components such as cement, sand, wollastonite are mixed. Then reinforcing synthetic fibers are added and composition is mixed. Plasticizing additive and water are added at next relation of ingredients, mass.%: cement, 68 -81; sand, 9.5 -13.5; wollastonite, 9.25 - 12.50; synthetic reinforcing fibers, 0.16 -0.55; plasticizing additive, 0.38 -0.43; water, the balance. Articles are dried in air in natural condition. Polypropylene fibers are used as synthetic reinforcing fibers. Mixing of cement, sand and wollastonite in turbulence type mixer is realized during time period no more than 30 s at using water heated up to temperature no lower than 40°C. Size particle of wollastonite is in range 100 -170 micrometers.

EFFECT: enhanced quality of plates.

5 cl, 1 ex, 1 tbl

Up!