LU84643A1 - DEVICE FOR SUPPLYING A METALLURGICAL DAIRY FILTERING SYSTEM - Google Patents

Description

J; _; _ BL-3403

Patent application for ..... 10 ... 2 ...,. 98.3 ........

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reétlÉ ^ fîon de l'Inventeur _._ (1) The undersigned .................. Ernest Meyers f ing. cons. in .....................

.................................................. ........ 4.6 .., ..... rue ... du ... Cimetière.f .... Luxembourg ................. ..................................

acting as djp / ÿÿppffiijt - as agent for the depositor - (2) ..................... EAUL ... MJ.RTH ....... HER,............................................. .................................................. ......................................

32, rue d'Alsace, Luxembourg (3) of the invention relating to:

Feeding device for a .............................. slag-metallurgical filtration installation ...... .................................................. ............

designated as inventor (s): 1. Name and first names ............ MONTEYNE-Guido ....................... .................................................. ...................................

Address .......... 28, Beukenlaan, 9971 .. Lembeke., Belgium ............................ ...................

2. Surname and first names ............................................. .................................................. .................................................. .......................

Address ................................................. .................................................. .................................................. ........................................

3. Surname and first names ............................................. .................................................. .................................................. ....................

Address·................................................ .................................................. .................................................. ........................................

He affirms the sincerity of the above-mentioned indications and declares to assume full responsibility for them.

Luxembourg _ (e 1.4. 19. 83 ..

J '' (signature) A 68026 _ (1) Last name, first names, firm, address.

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I BL-340 3 / EM / BM

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> PATENT OF INVENTION

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Feeding device for a metallurgical slag filtration installation PAUL WURTH S.A.

32 rue d´Alsace Luxembourg - 1 -,

Feeding device for a metallurgical slag filtration plant _, ____

The present invention relates to a device for supplying a metal slag filtration installation. lurgic including a substantially horizontal rotating drum! ‘Tal with filtering walls, provided with internal blades for driving the slag from bottom to top, from where it falls freely on a conveyor belt passing longitudinally through the drum and discharging the filtered slag, as well as a channel; feed by which the pulp composed of slag gra-; null and water, is brought inside the drum. This type of installation which was proposed in patent FR-A-78 19862, i has evolved meanwhile to the operating stage.

15 In order for filtration to be carried out under optimal conditions and to achieve the efficiency of which this installation is capable, it is necessary to ensure uniform filling, not only from one bucket to another, but also over the entire length of the buckets.

; The object of the present invention is to provide a supply device allowing such a single filling; form.

i [I To achieve this objective, the present invention! provides a supply device for a metallurgical slag filtration installation of the kind described in the preamble, which is essentially characterized in that | , said feed channel extends over the entire length of the i drum, that it is closed at its inner end, that its J section converges regularly in the direction of progression | 30 of the pulp, and that it is provided, on its underside, i _ calibrated outlet openings whose sections decrease progressively as the channel narrows.

For reasons of simplicity, the section of the channel is preferably rectangular.

; The feed channel preferably forms the; extension of a feed hopper.

; The calibration of the openings and the convergence of the; channel are chosen in such a way that the channel is rernnli -Jo * over the entire length when the hopper is feeding, -%; i ·! î: loaded. The reduction in the cross-section of the openings compensates for the increase in the pressure in the channel, which means that! the flow of pulp through the openings is uniform i | from one opening to another.

5 Other particularities and characteristics come out • 1 Will read the detailed description of an embodiment? presented below, by way of illustration, with reference to the accompanying drawings, in which:

Figure 1 shows a cross section of a filter drum;

Figure 2 shows a longitudinal section of the supply channel;

Figure 3 shows a horizontal section of the supply channel along the plane III-III of Figure 2 and Figure 4 shows a cross section of the supply channel along the plane IV-IV of Figure-2.

The filtration drum shown in FIG. 1 i is of the type described in the aforementioned patent FR-A- 78 19 862, and therefore it will no longer be described in the context of this patent application. .

: The drum 4, the surface of which is constituted by a metallic filtration lattice, has inside | a series of filter blades 6. This drum is rotated in the direction indicated by the arrow B, so as to have: the pulp, composed of water and granulated slag and brought through the feed channel 8, to the inside of the drum 4 = is driven by the blades 6. The water this granulation crosses the filtering surfaces of the drum 4 and the blades 6, so that the granulated slag is freed, as and when of its ascent with the blades 6, granulation water. In the upper region, the granulated slag is discharged through the blades 6 and deflected by the longitudinal deflectors 10, on a conveyor belt 14, by means of which the granulated slag is continuously evacuated from the drum 4.

We will now describe the feed channel with reference to Figures 2 to 4. This feed channel 8, '-L „whose section is preferably rectangular (see" Le ______ xigure 4) extends from the bottom of a hopper c * igf feed. -b \ -3 - Λ] across the entire length of the drum. The inner end 18 of this channel 8 is closed, as shown in. ] Figures 2 and 3. As the “; 1 Figures 2 and 3, the section of the channel 8 gradually decreases from the hopper 16 to the end closed by! ί wall 18.

The lower face of this channel 8 comprises a row of openings 20 through which the pulp flows.

f1! l The section of these openings 20 gradually decreases to 1% ·) 10 as the channel 8 converges. However, i% it is not necessary for the section of openings 20 to decrease each time from one opening to the other. It is in particular possible, as shown in FIG. 3, to provide several groups of openings, the section of the openings of one group being different from the section of the openings of the other group, while the openings of the same group all have the same section.

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Claims (1)

3. Device according to claim 1, characterized in that the channel (8) supports a rectan ^ / gular section. / -. ^ / 1