RU2766987C1 - Technological line for producing concrete mixture - Google Patents

Abstract

FIELD: building materials production.

SUBSTANCE: invention relates to the field of production of building materials and can be used at construction industry enterprises for the production of concrete mixture. The technological line contains a large aggregate warehouse, a fine aggregate warehouse, belt conveyors, supply bins of cement, water, active mineral additives, chemical additives, coarse and fine aggregates, gate valves, weighing batchers of concrete mixture and water components and a concrete mixing unit. In this case, the line additionally contains a mechanochemical activation section containing a transport auger connected to dispensers of Portland cement, chemical and active mineral additives, supplying these components for mechanical activation to a vortex layer apparatus connected to a mode control panel, a cooling system and a magnetic catcher of grinding bodies.

EFFECT: increasing the strength of the resulting concrete, operational properties and durability.

1 cl, 1 dwg

Description

The invention relates to the production of building materials and can be used in the construction industry for the production of concrete mix.

A known method of preparing a concrete mixture and a production line for its implementation, including the issuance of inert and binder materials through weight dispensers directly into the mixing drum of a concrete mixer truck for preparing the mixture during transportation, while before loading the inert materials they are pre-mixed using a belt conveyor and fed through the unloading funnel into the neck of the mixing drum. At the same time, the technological equipment is mounted inside the metal frame at three levels (RU 2351469, published on April 10, 2009, bull. No. 10).

The disadvantage of this technology is the production of heavy concrete with low performance properties, low strength.

A production line for the production of concrete is known (RU 134849 pub. 27.11.2013, bull. No. 33) including a ball mill for preliminary rounding of coarse aggregate grains, placed after the coarse aggregate hopper.

The disadvantage of this invention is the high energy consumption for crushing strong rocks and the low strength of the resulting concrete.

A known method for the manufacture of highly durable cement concrete and production line for its implementation (RU 2106327, pub. 10.03.1998). In the proposed production line for the production of extra-strong cement concrete, containing crushing plants installed in the course of the technological process for fine and coarse aggregates, batchers for concrete mix components, a mixer with forced mixing, means of transporting concrete mix components, as well as concrete mix and laying it in structures with the possibility of keeping in a given mode, while the crushing plants are made in the form of two devices for dry enrichment of fine and coarse aggregates and their separation into fractions, which are installed in front of the batchers for the concrete mix components and connected to them by conveyors.

The disadvantage of this invention is the high energy consumption for crushing coarse and fine aggregates, as well as a long time for preparing the concrete mixture.

Known production line for the production of concrete mix (RU 108735, pub. 27.09.2011, bull. No. 27), additionally containing a block of mechanical activation of coarse and fine fillers, a block of mechanical activation of cement and mineral additives, installed in series with warehouses and associated with the corresponding feed bins to provide hourly margin and temperature averaging of components.

The disadvantage of this technological line is the complexity of the preparation of the concrete mix due to the presence of a large number of activation blocks, the high energy intensity of the process, as well as the low strength of the resulting concrete.

The closest to the claimed production line is a method for producing a foam concrete mixture using a mechanically activated binder (RU 2540693, pub. 10.02.2015, bull. No. 4), which consists in the simultaneous mixing and porousization of the prepared working solution and foam in the chamber of the rotary-pulsation installation, providing pressure of the resulting mixture for its subsequent transportation to the place of pouring.

This line does not allow to prepare mixtures with high quality, in addition, the use of a rotary pulsation plant requires "wet" mixing of the binder with mixing water and additives, which complicates and limits its use in practice.

The objective of the present invention is to create a production line for the production of concrete mix in order to increase the strength of the resulting concrete, performance properties and durability.

The task is achieved by the fact that the production line for the production of concrete mix containing a warehouse of coarse and fine aggregates, belt conveyors for supplying aggregates to the appropriate bins, valves, weighing batchers, supply bins of Portland cement, active mineral additives, chemical additives, water, a concrete mixing plant, additionally contains a section of mechanochemical activation, containing a transport auger, a vortex layer apparatus, a mode control panel, a cooling system, a magnetic trap of grinding media.

In FIG. 1 shows a diagram of a production line for the production of concrete mix.

Technological line for the production of concrete mix works as follows.

From the warehouse of small 1 and large 2 aggregates, using a conveyor belt 3, aggregates are fed into the corresponding bunkers of small 9 and large 10 aggregates. Through weight dispensers of fine 6 and coarse 7 aggregates through valves 4, the aggregates enter the concrete mixing plant 23. From the Portland cement hopper 11, the hopper of active mineral additives 12, the hopper of chemical additives 13 through the valves 4 and the batchers of Portland cement 14, active mineral additives 15, chemical additives 16 components enter the area of mechanochemical activation through the transport screw 17 into the vortex layer apparatus 18, which has a magnetic trap of grinding bodies 19, a cooling system 20 with pipes of the cooling system 21, a control panel for operating modes of the vortex layer apparatus 22. In the vortex layer apparatus, the activation of these components occurs in for at least 3 minutes. After activation, these components enter the concrete mixing plant 23, after which the components of the concrete mixture are mixed with dry form for 2-3 minutes. After mixing, water is supplied to the concrete mixing plant from the water tank 8 through the valve 4 and the water dispenser 5 and the concrete mixture is finally mixed for at least 5 minutes.

The proposed production line allows to increase the strength of the resulting concrete, performance properties and durability due to the presence in the production line of a mechanochemical activation section, which significantly improves the quality of the binder, its activity, which, together with activation with active mineral and chemical additives, makes it possible to obtain concretes with high performance properties. .

Claims (1)

Technological line for the production of concrete mix, containing a warehouse of coarse and fine aggregates, belt conveyors for supplying aggregates to the appropriate bins, valves, weighing batchers, supply bins for Portland cement, active mineral additives, chemical additives, water, a concrete mixing plant, characterized in that it additionally contains section of mechanochemical activation, including a transport screw, a vortex layer apparatus, a control panel for operating modes of the vortex layer apparatus, a cooling system, a magnetic trap of grinding media.

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