DE287606C

DE287606C -

Info

Publication number: DE287606C
Application number: DENDAT287606D
Authority: DE

Description

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KAISERLICHESIMPERIAL

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PATENTSCHRIFT^PATENT LETTERING ^

— JVs 287606 ■--■:,:. KLASSE 18a. GRUPPE _f. - JVs 287606 ■ - ■:,:. CLASS 18 a. GROUP _f .

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: ^; C. A. BRACKELSBERG in DUSSELDORF-STOCKUM.: ^; CA BRACKELSBERG in DUSSELDORF-STOCKUM.

Verfahren und Vorrichtung zur Herstellung von Agglonieraten aus pulvrigen. Stoffen : und Laugen im Drehrohr. ;^ 'Process and device for the production of agglomerates from powdery. Fabrics : and lye in the rotary kiln. ; ^ '

: Patentiert im Deutschen Reiche vom 6. November 1913 ab.: Patented in the German Empire on November 6, 1913.

Das Verfahren bezweckt, aus pulvcrförmigcu Stoffen, z. B. Erzen, Salzen u.dgl., poröse Stücke zum Zwecke vorteilhafterer Ver-. arbeitung oder Verwertung mittels der in der Zeichnung dargestellten Vorrichtung herzustellen. The purpose of the process is to produce Substances, e.g. B. ores, salts and the like., Porous pieces for the purpose of more advantageous Ver. production or recovery by means of the device shown in the drawing.

Es ist bekannt, daß mit geeigneten Zuschlägen vermischte Pulver in Schmelz- oder Sintertemperatur'durch Rollen in Rohren.sich ίο zu regellosen Klumpen und Körnern gestalten lassen. Von diesem Verfahren wird in vor- ' liegender Erfindung kein Gebrauch gemacht. '■.■■■ In der. Patentschrift 224816 ist ein Verfahren beschrieben, nach welchem zur BiI-dung von Klumpen und Körnern die Pulver , · mit Chlormagnesiumlösung angefeuchtet und in Drehrohren durch Bewegen und Trocknen der Masse Stücke oder Körner gebildet wer-■■'■■'. den. Bei der Ausführung dieses Verfahrens geht die Agglomericrung in Drehrohren anfangs ; glatt und gut vonstatten. Nach einiger Zeit aber hört der Drehzylinder auf, Agglomerate auszutragen, und es zeigt sich, daß sich in der Trockenzone ein Ring angesetzt hat, der "»5 ständig wächst und den Zylinder allmählich . Verstopft, Die Beseitigung dieses Übelstandes bezwecken das vorliegende Verfahren und die dargestellte Vorrichtung. .It is known that powder mixed with suitable additives at melting or sintering temperature can be formed into random lumps and grains by rolling in pipes. From this process, use is not made in upstream 'lying invention. '■. ■■■ In the. Patent specification 224816 describes a process according to which the powder, moistened with chlorine magnesium solution and formed in rotating tubes by moving and drying the mass, is used to form lumps and grains. the. When this process is carried out, agglomeration begins in rotary kilns; smooth and well done. After a while, however, the rotating cylinder stops removing agglomerates and it is evident that a ring has formed in the drying zone which grows steadily and the cylinder gradually device shown.

!■■'.: Es wurde ermittelt, daß das Anbacken stets . 30 dann erfolgte, wenn das im Drehrohr befind-.;..■■ liehe Gut zu naß war. Dem war leicht da-■■'...· durch abzuhelfen, daß man weniger Eauge zusetzte. Versuche ergaben aber, daß. der übtlstand trotzdem auftrat, das Gut allmählich nasser wurde, anbackte und sich nur Agglomerate von geringer Festigkeit bildeten. '! ■■ '.: It has been determined that caking is always . 30 then took place when it was in the rotary tube -.; .. ■■ borrowed Gut was too wet. It was easy for him- ■■ '... · by remedying that one clogged less eye. But experiments showed that. the practiced anyway, the good gradually occurred became wetter, caked on and only agglomerates of low strength formed. '

Weitere Versuche .' ergaben, daß der Übclstand sich nur dadurch vermeiden läßt, daß man entweder eine vorgewärmte Mischung in das Drehrohr einträgt und dies so stark erhitzt, daß keine Kondensation der entstehenden Wasserdämpfe eintreten kann, oder dadurch, daß man das Agglomerieren und Trocknen voneinander trennt, derart, daß die Agglomerate nach Verlassen der Drehzylinder einer besonderen Trockenvorrichtung zugeführt werden. .More attempts. ' showed that the deficiency can only be avoided by either mixing a preheated mixture in enters the rotary tube and this is heated so much that no condensation of the resulting Water vapors can enter, or by agglomerating and drying separates from each other in such a way that the agglomerates are fed to a special drying device after leaving the rotary cylinder will. .

Da in vielen Fällen eine Verunreinigung des Gutes mit Chlormagnesium unerwünscht war, so wurde gesucht, dies Bindemittel durch solche zu ersetzen, die dieselben Bestandteile wie die zu agglomerierenden Stoffe enthielten. Sollte z. B. Mangan- oder Eisenoxyd agglo-"»· meriert werden, so mußte eine Mangan- bzw Eisensalzlösung, bei Kochsalz eine Natriumsalzlösung usw. benutzt werden. Versuche ergaben, daß sich poröse und hinreichend feste Agglomerate mit solchen Salzlösungen herstellen - lassen und Agglomerate größten Reinheitsgrades und beliebiger Mischung gemacht werden können. Vorzugsweise eignen · sich solche Lösungen von Mctallchloriden oder -sulfaten, die durch Glühen in Metalloxyd und Säure oder. deren Komponenten zersetzt werden. .Since in many cases contamination of the goods with chlorine magnesium is undesirable an attempt was made to replace this binder with one that contained the same constituents how the substances to be agglomerated contained. Should z. B. Manganese or iron oxide agglo - "» · must be merged, a manganese or iron salt solution had to be used, and sodium salt solution in the case of common salt etc. can be used. Tests have shown that it is porous and sufficient Make solid agglomerates with such salt solutions - let agglomerates be the largest Degree of purity and any mixture can be made. Preferably suitable Such solutions of metal chlorides or sulfates, which by glowing in metal oxide and acid or. the components of which are decomposed. .

Zur Ausführung des Agglomerierverfahrens mischt man die Stoffe mit einer solchen gc-To carry out the agglomeration process, the substances are mixed with such a gc-

Claims

/ suitable solution, the amount and concentration

/ tration to the substance to be agglomerated

/ must fit, and performs the preheated.

Mixing in a drum that is either heated to dry the agglomerates and is provided with a vent for the vapors, or is not heated. In the latter case the added solution must be so concentrated that it crystallizes on cooling. or

ίο hardened.

If you don't want to preheat the mixture,

,, So one first forms from the moistened Mass agglomerates by rolling in a drum and feeds this to a drying device to, in which the resulting vapors are diverted so that they the Do not cross out the agglomeration drum.

An apparatus working according to this method is shown in the drawing.

ao Fig. 1 shows a longitudinal section according to AB, Fig. 2 a section according to CD, and
Fig. 3 is a section according to E ^: F.
The apparatus consists of a reservoir i, which is equipped with a screw 2 for discharging the. to. agglomerating good is provided. It is followed by a mixing device 3, over which a shower 4 operated by a pump is arranged for supplying the solutions. Under the mixing machine 3, a drum 5 is rotatably mounted on rollers, to which the material is passed from the mixing machine by means of a channel .6. To the drum 5 sieves 7 can be connected to. to separate any fine material from the agglomerates and to produce agglomerates of a certain size. The sieves are surrounded by a jacket 8 which is connected by helical inlets 11 to a tube 9, at the end of which there is a device for crushing agglomerates that are too thick. The discharged at the end of the drum 5 agglomerates are supplied to the drying apparatus by means of an inclined trough ■ iz. This consists of circular disks 15 which are rotatably mounted on rollers 16 and which serve to carry the pipes 14 which are arranged in a circle and are reinforced with blades 17. On the side of the dryer located after the drum 5, a channel 13 is attached which. rotates with it and from which the agglomerates are fed to the pipes 14 by means of the inlets 18. Since these tubes move in a circle, the agglomerates are formed by action of the blades · iy a sucked by a fan .19, entering through pipe 20 hot air flow being led and dry in the reservoir 21 discharged. Since the pipe 9 conveys fine material and agglomerates that are too thick, crushed, back into the drum 5, only agglomerates of a certain size are produced. .

Ρλτεν τ claims;

i. Process for the production of agglomerates made of powdery substances and alkalis in the rotary kiln, thus identifiable • 'indicates that the agglomerates hardening by evaporation of the solvent ;. ■ '.. ■■ in a rotary kiln from preheated V Mixture can be formed and dried ', or from a mixture that has not been preheated.

., generated in a rotary tube agglomerates' ■ are drying it in an inde pendent -... supported by the rotary tube and bc- ■; V i wegten device takes place. ■ ^: 2nd device for the production of Ag

glomerate from a not, preheated * Mixture of powdery substances and lukewarm

gene, characterized in that the 'agglomeration drum with, sieve, squeezer around return provided and from the Drying drum is separated.

For this purpose ι sheet of drawings.