SU1724617A1 - Granular slag production plant - Google Patents

Abstract

SUMMARY OF THE INVENTION: In a plant for the production of granulated slag, a vibrating nozzle is placed inside the discharge chamber. In the lower part of the discharge chamber there are openings blocked by filtering grids and covered from the outside by protective-boxes with drain pipes. The outlet openings of the pipes are outside the horizontal projection of the drum-throwers. Under the discharge hopper is a drum thrower. Below it is the receiving platform with two inclined slopes, between which in the recessed part there is a drainage ditch, parallel to the axis of the drum-throwers. 2 Il.

Description

The invention relates to the building materials industry, the mineral fertilizer and the metallurgical industry, and can be used to produce granulated slag from blast furnace, nickel, ferroalloy, and other slag melts, and can also be used to dehydrate bulk solids, such as sands.

Installations with rotating ribbed drums for granulating slag melts are known, for example, including a guide chute with slit water nozzles under which the drum with longitudinal ribs rotates. From the guide tray, the slag melt and water are fed to rapidly moving fins, which break the melt into spherical granules and water into small particles and cast them 20-40 m, after which they are lowered onto the receiving platform.

The resulting granulated slag is loaded onto an external transport by a grab crane

A device for the production of granulated slag is known, which includes a hydraulic chute, a vapor-gas drainage chamber and an unloading chamber, as well as a two-section rotating drum. The first section of the drum has a throat, a conical head, a cylindrical body and snail loaders. Inside the second section, a filtering surface is enclosed in the cross section of the mesh. The device provides reliable localization and removal of gas-vapor emissions to the cleaning and two-stage dehydration of the slag pulp, thus reducing the moisture content of the granulated slag to 5-10%.

The drawbacks of the device are large overall dimensions and a significant metal consumption of the two-section drum.

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ABOUT

the need to use for the delivery of granulated slag to the warehouse of long conveyors, which requires large areas, complicates the layout and complicates the operation, the placement of filter nets inside the drum, which complicates the design, complicates their replacement and repair, reduces reliability.

The aim of the invention is to reduce overall dimensions, reduce metal consumption, increase reliability and facilitate equipment operation.

The goal is achieved by the fact that the installation, which includes a hydro-groove, a steam-gas discharge and unloading chambers, as well as a rotating drum-thickener with a throat, a conical head and snail reloaders, is equipped with a drum-type drum with longitudinal edges on the surface and under the unloading chamber with at least one vibro-nozzle located inside it, the openings in the lower part of the discharge chamber are covered with filtering grids and are covered from the outside with drainage boxes corpses, the outlet openings of which are outside the horizontal projection of the drum-throwers.

FIG. 1 shows the installation diagram, general view; in fig. 2 — node I in FIG. one.

The installation includes a slag receiving funnel 1, under which there is a hydroglobe 2 passing through the openings in the walls of the vapor-gas outlet chamber 3 with steam gas and drainage pipes, as well as the neck 4 and the conical head 5, and the cylindrical body 6 of the rotating drum thickener. Inside the cylindrical body there is a snail loader 7, the unloading socks 8 of which are located inside the unloading chamber 9. In the lower bunker part of the unloading chamber there is a vibrating nozzle 10 elastically fixed, connected to a vibration generator (not shown). At the bottom of the unloading chamber there is a shutter 11c with a load.

In the lower part of the discharge chamber and in the shutter of the flasher there are openings blocked by filtering grids 12 and covered from the outside by protective boxes 13 with drain pipes. Their outlet openings are outside the contour of the drum-thrower

14, which is located under the shutter-flasher. On the outer cylindrical surface of the drum-throwers 14 there are fins

15, oriented parallel to its axis. A receiving platform 16 is located below the drum thrower, having two slopes inclined toward the drainage ditch 17, which is located between them and is oriented parallel to the axis of the drum thrower.

Under the surface of that part of the receiving platform, which is located between its edge on the side of the drum-sweeper and the drainage ditch, and below the surface of the drainage are heating elements 18, for example steam heating pipes. In the upper part of this slope, at its outer edge, there is an irrigation pipe 19, A grab bucket 20 is located above the receiving platform, which is suspended from an overhead crane (not shown).

The plant for the production of granulated slag has the following characteristics:

Productivity, t / min 5-8 Length of hydro-chute, m10.0

Diameter of a mouth of a conic head, m1,5

Diameter of the cylindrical body, m3.5

Cylindrical rotation frequency

enclosures, rev / min8,0

Number of snail loaders2

The height of the inlet of the snail reloader, m 1.0 The width of the outlet of the snail reloader, m 1.0 Diameter of vibrating nozzle, m0.2

Sash height

shutter flashers, m0,5

Sash width

shutter flashers, m1,5

Clearance of the filter mesh, mm1.5

Body length

drum-thrower, m2,0

Case diameter

drum-thrower, m1,4

Frequency of rotation of the body of the drum thrower, rpm 300 Length of the receiving platform in the direction perpendicular to the axis of the drum throwing drum, m40.0

The length of the slope of the receiving area from the side of the drum-thrower, mm10,0

Slope of the slopes of the receiving area, grad1.5

Claims (1)

Claims An installation for the production of granulated slag, including a hydraulic chute, a vapor-drainage chamber, and an unloading chamber, a rotating drum thickener with neck, conical head and snail reloaders, characterized in that, in order to reduce overall dimensions, reduce metal consumption, increase reliability and ease of operation, it is equipped with a drum-thrower located under the unloading chamber with longitudinal ribs on the surface and located inside it at least one vibro-nozzle, the openings in the lower part of the discharge chamber are blocked by filtering grids and are covered from the outside with catchment boxes with drain pipes, output holes Brushes which are taken out of the horizontal projection of the drum-throwers.