SU1216201A1 - Bin trestle of blast furnace - Google Patents

Description

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The invention relates to devices for the preparation and supply of charge materials for blast furnaces and can be used in smelting iron in ferrous metallurgy.

The purpose of the invention is to increase the reliability of supplying charge materials.

Figure 1 shows a bunker overpass and the location of its equipment in Figure 2 — node I in Figure 1.

The bunker trestle is made in the form of two operationally independent separated paths, one of which is located in a coaxially blast furnace (the path for hot sinter is remotely (for cold charge). The path for sinter contains hopper 1, screens 2, hopper scales 3 with gate located over skip hoist 4.

The peripheral path is made in two blocks, symmetrically to the axis of the furnace and the path for the supply of agglomerate. It consists of hoppers 5 for oats and additives, feeders 6, hopper scales 7 and belt conveyors 8 located above them. The coke supply path is also double-block, symmetrically with the furnace axis and the sinter feed path and consists of hoppers 9, feeders 10 and tape conveyors 11. The end drums of the conveyors are equipped with screens 12, under which hopper scales 13 are located with chutes fixed above the skip hoists 4. Under the screens there is also a bunker 14 for placing coke screenings. Skip hoists 15 are located under the bunkers, at the discharge areas of which there are coke collecting hoppers 16. Wagons 17 are installed under the bunkers on the railway lines. The system of cleaning the little things of sinter is made in a similar way. The sifting area of the sinter at the screeners 2 is connected with chutes 18, Skip elevators 19 are installed under the bunkers, and the wagons 21 are located at the discharge parts of the sinter bins under the bunkers.

Since the set of batch materials is produced in sinter sintering scales, I will exclude

2162012

There is a need to equip the supply path of charge materials with lamellar conveyors to load hot agglomerate into 5 skips, the presence of which reduces the reliability and durability of the bunker ramp, and the mixing of cold charge materials (lime, pellets, etc.) with the agglomerate is cooled

10 gives it, increasing the durability of the scales and reducing the effect of high temperatures on them.

Introduction to hopper scales conveyor from a number of hopper scales

J5 pellets and additives reduces the number of pieces of equipment, and also serves to increase the reliability of the functioning of the system. We load the domain nevM.

20 Bunker overpass works in the following manner.

Bins 1 are filled with agglomerate, grains, additives, and coke. The inclusion of screens 2 agglomerate pro-

25 wobble ,. At the same time, the large fraction enters the hopper scales 3, and the fines into the bunker 18.

The accumulated fines of the sinter when placing skip hoists

30 19, they are reloaded into the hoppers 20 and the wagons 21 are taken for disposal.

Hopper scales 3 simultaneously with the agglomerate are fed from the hoppers 5 oaks and additives. For this include

35 feed the feeders 6, load the cold: e composing the charge into the hopper scales 7 and the specified weight doses are conveyed by conveyors 8 to the hopper scales 3. Thus, a possible

40 in bunker scales 3 to prepare the optimal portion of the charge both in chemical composition and in the ratio of sinter and pellets. In addition, it is possible to mix the agglomerate, fiber and additives, which improves the gas permeability of the charge, allows you to adjust its basicity and strengthens the cooling of the agglomerate. After a set dose in the bunker

50 scales, it is loaded through the bolt in with: Kip lifts and fed to the top of the blast furnace. From the bins of 9 Sht1 modules, 10 coke is fed to the conveyors 11. By switching on the screens 12

55 coke sifted. Its coarse fraction enters the hopper scales 13, and the small fraction is removed to the bunker 14. Of these, skip hoists drop out

load into the hopper 16, and then into the cars 17, These cars of small coke taken to utilizayil. From bunker scales 13 coke is loaded into skip hoists 4 and fed to the top of the blast furnace.

The technical and economic efficiency of the proposed overpass is due to the increased reliability and durability of the tract due to the exclusion of

use of conveyor transport on hot sinter, possibility of sintering set, pellets and additives in optimal ratios. Also produced; in bunker scales the formation of the charge. in any compositions specified by the technology, which allows to increase the gas permeability of the charge in the furnace and increase its productivity.

Editor I. Derbak

Compiled by N.Dunaev, Tehred Z.Kastelevich Proofreader A.T.

Order 962/29 Circulation 552 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow,, Raushsk nab., 4/5

Branch PGS Patent, Uzhgorod, st. Project, 4

Claims (1)

A blast furnace bunker platform containing bunkers, bunker scales, screens, means for eliminating charge screenings, conveyors and a mechanism for raising charge materials to the top, characterized in that, in order to increase the reliability of the path, the bunker scales of the agglomerate are connected by conveyor to additive bunkers and cold components of the iron-containing additives of the charge, and the overpass is made in the form of two operationally separated paths, one of which is located coaxially with the blast furnace, and the other peripherally. (6D