DE1930394C3 - Device for water treatment of iron-containing steelworks slag after solidification in a pouring bed filled in layers - Google Patents

Description

5. Apparatus according to claim 3 or 4, that water is not only after filling the casting bed, characterized in that the upper tube part (1) but already vorgenoman during its filling its free end is open and a nozzle 35 men. It is precisely at this time that there is a risk of explosion (7) Largest for connection to a cooling water pipe, especially when in cavities network (8). of the casting bed form water accumulations in the

liquid iron can also reach it.

The invention has the object that

The invention relates to a device 40 difficulties in wetting ferrous for water treatment of ferrous steelworks steelworks slag to avoid explosive slag after solidifying in a layered form, turn off. According to the invention filled casting bed, preferably with an inclined one, this through a device for water treatment Position. Iron-containing steel mill slags fall z. B. ferrous steelworks slag after solidification according to the LDAC, LD and Siemens-Martin process 45 in a pouring bed filled in layers, vorzugren on. wise with a sloping position, achieved by about. It is common for the casting bed to be distributed after this recovery process and at the same time as the casting to process accruing steelworks slag, bed filling in the casting bed brought cooling water namely in pouring beds, to which they lead in pans after the bed has been filled and has solidified is transported by truck or wagon. 50 can be opened by explosion with detonators. The pans contain more or less large portions, with the cooling water flowing into the through the explo parts Iron in solidified and liquid form, liquid sion in the bed filling resulting cavities ver-slag with shells as well as cinder blocks as it divides. The cooling water conductors are on one of them below are cold in the pans. The outflow area is a connecting network of cooling water pipes limited by the span of the crane runway, what 55 connected and will be outside of the casting bed has the consequence that there is a build-up of fluid in the pouring bed filling due to anchoring as well The slag is covered with thick layers of iron, held in place by the slag that is cast in layers. Slag and pieces of iron form by the slag The explosion pressure is carried through into the cooling water are enclosed or to which slag adheres. The conductors introduced and in these to be ignited Such casting bed fillings triggered by means of grippers, excavators 60 capsules.

and charger are very difficult to process. In the casting bed filling, the explo-

If there are stress cracks in the sion due to excessive moisture, more or less large cavities, so-called

Bed filling generated so as to the processing with the called blasting cauldron. They enable an accelerated

to facilitate the devices mentioned. In deep beds with low water drainage from the cooling water pipes and

Blast furnace slag, especially ultra-acidic 65 a corresponding large-area water distribution

Slag, you have the cooling time by setting soils in the casting bed filling. The so according to the invention

so-called pilots (rolled steel billets) shortened by dung reached with large amounts of water, from below

.After the slag has solidified, the pilots are removed and the wetting or penetration progressing upwards

Firing of the pouring bed filling leads next to the Zer- provided with which they are supported and detachable on

Reduction of the casting bed filling by stress cracks Casting bed 5 can be attached,

and loosening the iron from the slag in the reinforcement

ten measures to expose and more complete connection to a ^Küh j ^wa f, ^erleitu ° K! * J% fL

Delete the existing limestone and dolomites. While the R ° ^hrtei1 ! ^^^

body. This steelworks slag then has after ih- pipe part 1 on the free ^^^,

rer further processing and use as road after the casting bed has been dispensed 5 ^d ^ Jl £

construction material as good as no more tendency to introduce driver capsule into the pipe part 2. Nachigj

phenomena if it comes into contact with moisture, the pipe part 2 is destroyed undI uidu um

comes. L contrary by the proportion of ge ">. Imaging bed filling ^e f / m ^ prengkessel emgebrach

burnt lime and dolomite the setting properties ^that the pipe part 1 d ^ ^chIauf ? _t ⁿ ^ ^e _pn ^K ^ S _e I

Shank of the building material is strongly promoted, so that it runs in and out together with the endings

Among other things, excellent for the way and place- the other pipes and d ™ ^S Pf ngl SJ "J '

stabilization is suitable distributed in the casting bed filling and this evenly

In the drawing, the idea of the invention is moderately wide from bottom to top.

explained using an exemplary embodiment. It will be established in practice

For a brazen area one must carry out the blasting

Fig. 1 is a schematic cross section through a thus largely sparing ^the ^ * f! ^ ^N

Casting bed and pipes still the ^ones for the KuMw f *

Fig. 2 shows a schematic partial section through another blasting vessel

It would be fatal because of the explosion

Fig. 2 shows a schematic partial section through another Spreg g Pouring tray. understandable that by the explosion

d cooling conductors »^^ η can

iessett. understand

The cooling water conductors consist of an upper 1 branch on the cooling water conductors

and a lower pipe part 2, the pipe parts 1, and these after their use «P?

1 are nested. The upper pipe part 1 is new parts need to be replaced. In the arms 4 hinged at points 3, = »5 on the» «» «^. /

which the pipe parts 1,2 in the casting bed during the water treatment based on the g ^ J ^^

Hold the slag pouring in layers. Filling can easily be accepted

The arms 4 are provided with plates 6 at their free end.

1 sheet of drawings

Claims (4)

1 2 the holes they created were filled with water. In some cases the pilot holes have also been used as blast holes. But that only had 1. Device for water treatment iron purpose, the individual layers in the deep bed containing steelworks slag after solidification 5 for faster cooling and for an erleichin a pouring bed filled in layers to loosen up previous excavation work. preferably with an inclined position, while the LDAC method is characterized by the slag produced by the pouring bed (S), which produces fertilizer divided into the slag obtained by the other processes at the same time as the pouring bed filling the pouring bed introduced cooling water pipe is partially repeated in the blast furnace and on the other (1,2), which, after the bed has been filled and solidified, is used as a road building material. The disagreed ren opened by explosion with detonators restricted use of the steel mill slag as The cooling water in the road building material is still available in the the explosion in the bed filling resulting from unslaked lime in the form of small slag Cavities distributed. 15 pieces of lime and small bodies made of sintered dolomite 2. Device according to claim 1, thereby opposite. Both limestone and dolomite characterize that the water conductors (1,2) to pieces are partly or entirely of slag umeinem they are connected to each other by cooling water, and therefore when you have the wetness with Serleitungsnetz (8) outside of the casting bed (5) water preclosed according to the conventional methods and in the bed filling by Ver ao, difficult or not completely to extinguish. It anchoring and the layer-by-layer poured in place, unquenched limescale remains in the slag to slag are held. back, which when used as road construction 3. Device according to claim 1 or 2, to form driver disc when the slag is soaked marked that the aquifers lead from openings. an upper (1) and a lower pipe part (2) «5 As is well known, wetness is associated with a high level of explosion resistance, which is connected by plugging into one another and creates a risk if the water in the bed is filled with water. and are releasably attached in the casting bed (5). water meets with not yet solidified iron. 4. Apparatus according to claim 3, characterized in order but a dredged and transportable pile indicates that the upper pipe part (1) has to be created, the wetness and the linked to it Arms (4) for support and various cooling down continuously and continuously up to kerning on the bottom of the casting bed (5) be effective on the bottom of the casting bed filling, hen is. For this reason, the cooling is done by means of