RU67578U1 - TECHNOLOGICAL DIAGRAM OF PRODUCTION OF GAS CONCRETE - Google Patents

Abstract

The utility model relates to the field of construction, namely to the technology for preparing cellular concrete products and can be used in the manufacture of aerated concrete. The purpose of the utility model is to improve the physicomechanical characteristics of aerated concrete (strength, frost resistance) due to the activation of aerated concrete components during its manufacture, as well as the appearance of smaller pores. The essence of the utility model lies in the fact that the technological scheme for the production of aerated concrete containing a receiving hopper for sand, conveyor belts, an intermediate hopper, a drying drum, cyclones of the dust precipitation system, elevators, a hopper for dry sand, a hopper for cement, a hopper for lump quicklime, a hopper for active mineral additives, weighing batchers, mill, screws, hopper for ground mixture, hoppers for aluminum powder, surfactants, caustic soda and water, vibro-gas concrete mixer, gas concrete pouring station form, vibration compaction post - vibrating table, pressurizing machine, pre-exposure of products, trolleys with molds, a tunnel chamber for heat treatment of products, a trolley with molds after heat treatment, a finished goods warehouse, an additional unit for mixing raw materials and a unit are installed in addition to the mill for grinding raw materials for preliminary grinding of raw materials, and before vibro-gas-concrete mixer, a device for producing colloidal aluminum powder electro The hydraulic means and electro-mixer.

Description

The utility model relates to the field of construction, namely to the manufacturing technology of cellular concrete products and can be used in the manufacture of aerated concrete.

Known technological lines for the production of cellular concrete (U.Kh. Magdeev, MN Gindin Building materials 2/2001, p.2, Modern technologies for the production of cellular concrete, NIPTI, "Stroyindustriya", M). However, the existing technological equipment does not allow improving the physicomechanical characteristics of heat-insulating aerated concrete due to insufficient dispersion of the constituent components of aerated concrete (aluminum powder and mineral components). It is known, for example, that the supplied aluminum powder (according to GOST 5494-95) is significantly aggregated into lumps of 100-500 microns in size. There are proposals that solve the problem of dispersing aluminum spring-type powder at the Mogilev KSM (WWW / stromtrdinq / ru | publish | 010 / html).

A known method of producing colloids of metals and devices when using high voltage (AS 117562). A device for producing metal colloids is known (L.A. Yutkin Electro-hydraulic effect and some possibilities of its application. Series - Construction industry. Issue 2 Leningrad House of Scientific and Technical Propaganda (LDNTP00), Leningrad 1959, p.14), which can be used to produce metal colloids in any liquids ranging from 0 to 100-200 microns. The smallest average particle size of the obtained particles in the experiments was about 0.05 μm.

It is also known to use the electro-hydraulic effect for ultrafine grinding (see ibid.).

High-quality mixing of aerated concrete components can be obtained in electro-hydraulic mixers with simultaneous activation and dispersion of mixed materials (VV Bogdanov, EI Khristoforov, B. A. Klotsung Effective heat-exchange mixers, Leningrad, Chemistry. Leningrad branch 1989, p. 84) .

The closest technical solution is the scheme for the production of aerated concrete based on dusty sand (Yu.M. Bazhenov, L.A. Alimov and others. Concrete technology of building products and structures. Textbook for high schools. M: Publishing house ASV, 2004, p.149). The technological scheme includes a sand receiving station, a hopper for storing components of aerated concrete, a ball mill, in which the metered components are crushed and accumulated in the hopper. The preparation of aerated concrete is carried out in a vibro-gas concrete mixer, into which aerated concrete components including aluminum powder are dosed. Molding of products is carried out according to known vibration technology.

However, this technological scheme also does not allow improving the physicomechanical characteristics of aerated concrete by increasing the dispersion and activation of its components: mineral and aluminum powders.

The essence of the utility model lies in the fact that the technological scheme for the production of aerated concrete containing a receiving hopper for sand, conveyor belts, an intermediate hopper, a drying drum, cyclones of the dust precipitation system, elevators, a dry sand hopper, a cement hopper, a hopper for lump quicklime, a hopper for active mineral supplement

weighing batchers, mill, augers, hopper for ground mixture, hopper for aluminum powder, surfactant, caustic soda and water, vibro-gas concrete mixer, post for pouring aerated concrete mixture into a mold, vibration compaction post - vibration table, press machine, post-exposure post, trolleys with molds, a tunnel chamber for heat treatment of products, a trolley with molds after heat treatment, a warehouse of finished products, in addition to a mill for grinding raw materials, a unit for mixing raw m and materials under preliminary grinding unit for raw materials, as before vibrogazobetonomeshalkoy mounted apparatus for producing colloidal aluminum powder electrohydraulically and electro mixer.

The essence of the utility model is illustrated in the drawing.

The technological scheme for the production of aerated concrete contains a receiving hopper for sand 1, belt conveyors 2, an intermediate hopper, a drying drum 4, cyclones of the dust precipitation system 5, elevators 6, a dry sand hopper 7, a cement hopper 8, a hopper for lump quicklime 9, a hopper for active mineral additives 10, weight batchers 11, mill 12, screws 13, hopper for ground mixture 14, hopper for aluminum powder 15, hopper for surfactant 16, hopper for caustic soda 17, hopper for water 18, weight batchers 19, vibro-concrete mixer 20, post for pouring aerated concrete mixture into mold 21, vibration compaction station - vibrating table 22, pressurizing machine 23, pre-exposure station 24, trolley with molds 25, tunnel chamber for heat treatment of products 26, trolley with molds after heat treatment 27, finished goods warehouse 28, in front of mill 12 for grinding raw materials, a unit is installed in series

for mixing raw materials 29 and a unit for preliminary grinding of raw materials 30, and forward with a vibratory-gas mixer 20, a device for producing colloidal aluminum powder 31 is installed in an electro-hydraulic manner and an electro-hydraulic mixer 32.

The technological scheme for the preparation of aerated concrete works as follows. Components for the preparation of aerated concrete: sand, cement, quicklime, active mineral additive according to the known technological scheme are accumulated in the bins 7, 8, 9, 10, respectively. Moreover, the sand obtained by the receiving hopper 1 is pre-dried in the drying drum 4 and the bucket elevator 6 fed to the storage bin for dry sand 7. Then from the bins 7, 8, 9, 10 through the batchers 11, the mixture enters the unit for mixing raw materials 29. This unit may be a rotary crusher or disin egrator, wherein the material is mixed and partially crushed. Further, the material enters the unit for preliminary grinding of raw materials 30. Such an aggregate may be an activator chopper. Pre-crushed material enters the ball mill 12, in which a higher fineness is achieved. From the ball mill 12, the crushed material is fed by the elevator 6 to the filling hopper for the ground mixture 14. Aluminum powder, surfactant, water from the bins 15, 16, 18 is supplied by the batchers 19 to the device for producing colloidal aluminum powder 31, where the aluminum powder is dispersed to colloidal sizes . Further, all the components of the hydroconcrete from the bins 14, 15, 16, 17, 18 through the batchers 19, and the aluminum powder from the device for producing colloidal aluminum powder 31 enters the vibro-concrete mixer 20 and then

known technological scheme according to the description of 21, 22, 23, 24, 25, 26, 27, 28.

In the technological scheme, an electro-hydraulic mixer 33 is also installed in front of the vibro-gas-concrete mixer. When using it, the technological scheme works as follows. The components of aerated concrete are metered from the bins 14, 15, 16, 18 through the dispensers 19 and fed into the electro-hydraulic mixer 32 with the amount of water to ensure sufficient viscosity of the mixture. After processing the mixture in an electro-hydraulic mixer 32, the mixture is fed into a vibro-gas-concrete mixer 20 into which the remaining components are additionally supplied in the required proportion and then the mixture is mixed and the technological process is carried out at posts 21, 23, 24, 25, 26, 27, 28. In the electro-hydraulic mixer 32, activation of materials, as well as additional dispersion of aluminum powder and materials. The presence of aluminum powder improves the operating conditions of the electro-hydraulic mixer 32. In the electro-hydraulic mixer 32, aluminum powder can also be supplied through the device for producing aluminum powder 31. In this case, a higher degree of dispersion of the aluminum powder is achieved.

The effectiveness of the technological scheme for producing aerated concrete is that due to a more complete grinding of raw materials, their activation is increased, which makes it possible to obtain aerated concrete with high physical and mechanical characteristics.

Claims (1)

Technological scheme for the production of aerated concrete, containing a sand receiving hopper, belt conveyors, an intermediate hopper, a drying drum, dust precipitation cyclones, elevators, a dry sand hopper, a cement hopper, a ball for quicklime, a hopper for an active mineral additive, weight batchers, a mill , screws, hopper for ground mixture, hopper for aluminum powder, surfactant, caustic soda and water, vibro-gas concrete mixer, post for pouring aerated concrete mixture into a mold, vibration compaction post - vibration table, prika a full-time machine, a post for preliminary exposure of products, trolleys with molds, a tunnel chamber for heat treatment of products, trolleys with molds after heat treatment, a finished goods warehouse, characterized in that, in addition, in front of the mill for grinding raw materials, a unit for mixing raw materials and a unit for preliminary grinding of raw materials, and before vibro-gas-concrete mixer, a device is installed for producing colloidal aluminum powder by electro-hydraulic method and electro-hydraulic mixer.