SU446728A1 - Ring sinter machine - Google Patents

Description

one

The invention relates to the field of ferrous or nonferrous metallurgy, in particular for the agglomeration of ores and concentrates under pressure.

The known ring sintering machine consists of devices for laying the charge and unloading the sinter, incendiary hearth, sintering carts, placed in an annular tube, into which air is supplied under pressure to increase productivity. In the loading and unloading areas, the machine is equipped with a pair of sealed bunkers with upper and lower valves and distribution valves for pressure equalization and redistribution of materials during their loading and unloading.

The disadvantage of the known construction is the inaccessibility of observation and maintenance of the machine for laying devices, charge, hearth, sintering carts, grate, sinter discharging unit, since these devices and components are in the pressure zone of process air.

The object of the invention is to ignite the mixture under vacuum and sinter it under pressure.

For this, the housing of the proposed sintering machine is provided with lower pivoting and upper sectional grids.

moreover, the guides of the latter in the area of loading, ignition and unloading of the product are made of a shaped profile. The blast chambers are connected along the outer perimeter with a stationary vacuum collector through a branch pipe with a valve, and along the inner one - with radial pipes connected to the central gas distribution chamber equipped with a ring with openings unopened in the loading, ignition and unloading zone.

FIG. 1 shows the proposed sintering machine, in plan; in fig. 2 is the same; the section along A-A in FIG. one; in fig. 3 - the same section along

BB in FIG. 2; in fig. 4 - sinter discharge unit.

The ring sintering machine contains a low-layer loading device 1, an incendiary horn 2, a high-layer loading device 3.

The drive body 4 of the machine is provided with a lower pivoting grill 5, an upper sectional grille 6, and blowing chambers 7. The blowing chambers are provided with incendiary

valves 8. A nozzle 9 of the incendiary valve is connected with a stationary vacuum collector by means of a seal 10. Air is blown into the blowing chambers by means of radial pipes 12.

The radial pipes are connected to the central gas distribution chamber 13, which is equipped with a ring with holes And, a cut-off segment 15 with an interchangeable seal 16, an emergency relief valve 17 blow, an inspection hole 18. With the stationary pipeline 19, the gas distribution chamber is articulated with a seal 20.

The upper sectional lattice is held in the high pressure zone in a predetermined position by clamps 21. Above the discharge, loading and ignition zones, the upper lattice is mixed, in the direction of it, named 22. Under the guides, to prevent spillage from loading and ignition, W; itny flooring 23. At the site of unloading of sinter, the machine is equipped with a ripper 24 sinter. The resulting agglomerate is removed at the unloading site through the valve 25. The working area of the machine is placed in a hermetic case 26. The driving force from the drive of the machine to the central gas distribution chamber is transmitted through tangential connections 27.

The machine works as follows.

With the drive, the machine is driven. With the loading device 1, a low incendiary charge layer is laid on the lower turning grid 5. The layer is ignited using the sintering horn 2 under vacuum. For this, the blowing chamber 7 is communicated in the ignition zone with the stationary vacuum collector 11, opening the ignition valve 8.

The boot device 3 is placed a high layer of the mixture on top of the low layer and the ignition valve 8 is closed. Before supplying the charge to the high-pressure zone, the charge is overlapped from above by the upper section grids 6, keeping them in the working zone by the clamps 21.

In the high-pressure zone, air is blown into the blowing chambers 7 from the stationary pipeline 19 through the distribution holes of the ring 14 and the radial pipes 12. The air passes through the lower turning grid 5, low (lit)

and a high layer of the charge, the upper sectional grid 6 (with the ignition valves being normally closed), sintering is performed. When the sintered product leaves the working area, the upper sectional grids 6 are released from the clamps 21 and guided along the guides 22 to bypass the loading, unloading and igniting zones.

The sintered product is loosened by the ripper 24 and, with the help of the lower return grill 5, is sent to the sinter receiving bin, having previously opened the valve 25. The machine should be operated using the bed.

Subject invention

An annular sintering machine, comprising a drive housing with blown chambers enclosed in a hermetic housing,

loading devices, an incendiary furnace, air and gas pipelines connected to combustion chambers, grate bogies with running rollers and curved rail guides, characterized in that

In order to ignite the solvents under vacuum and sinter it under pressure, the casing is provided with lower rotary and upper sectional grids, the guides of the latter in the loading area, ignition and unloading of the product are made up of a shaped profile; pipe with valve, but with internal radial pipes connected to the central gas distribution chamber equipped with a ring with openings blocked in the zone of narrow ignition and unloading.

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