DE2124955A1 - Process for the pretreatment and grinding of ores containing aluminum - Google Patents

Description

Use gun Yorbehandoln and grinding aluminum content ip; en ores

The invention relates to a new process for the pretreatment and crushing of aluminum ores, mainly for the preparation of the alkaline digestion of bauxite.

In the case of bauxite soles, in addition to those used by the Bauxitoorte, such as hydrargillite, Bühmit or Dlaepor, given composition also the physical properties an important role · The digestion reaction takes place on the surface of the bauxite grains, which is why the plüasigkeitedurchlaooigkeit and consequently the efficiency of the digestion through the denser or looser structure of the Kürner is influenced. That is why it is a precondition for the Bayer process on sound- »

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Make sure that the aluminum or lye digestion should be properly finely ground. If there is a tremendous amount of excess in the interior, increasing tonordeor production, if the degree of effect of the digestion is decisively influenced by the fineness of the grind, correct grinding is also particularly important. In the sail the bauxite arrives from the depot into the production process, which always begins with coarse grinding, followed by fine grinding, in which the optimum grain size is achieved. It is known that ball mills are generally used to carry out grinding the comminution of the ore lumps in the UQhlen is accomplished by balls or other »grinding media. Furthermore, the self-grinding method (autogenous grinding) is known for the lumpy bauxite, whereby no special grinding media were used in the mill, but the function of the grinding media is fulfilled by the bauxite chunks themselves as a result of the rotation of the mill. At present, ball mills are predominantly used in industry used to grind bauxite. Milling can be carried out in both dry processes and ix hate processes. Ia the case of "a dry ball mills Uahlene with the bauxite is suvor ined at a temperature of 400 to 500 ⁰ C calc. At the moment, however, the hateful method of bauxite milling "carried out with ball mills" is very widespread. With the Hasssahl process, the calcining of the bauxite becomes unnecessary. Furthermore, the loss of dust is eliminated and there is no need for costly facilities for separating and conveying the dust. The Uahl process with ball mills, however, has the disadvantage that it becomes more and more a bottleneck in production, because the grinding of large building blocks requires large, parallel working »ball mills ?! _s The need for fuel and the electricity required by the mills is therefore very high, which in turn makes the whole process of disintegration out of date. The grinding process without separate® hollow bodies (autogenous grinding) also has a large amount of space and the grinding efficiency is lower than bsi & © n ball mills. All these feelings, be it dry or dry

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arbten, are exposed to severe wear and tear and, accordingly, sound has a short service life even with these cools, the very great annoyance of the issuance.

A method has already been hit and in an earlier Hungarian patent Tor off ent light, according to which the Ka ß.mahlen bauxite and limestone in the presence of an alkali carbonate β Tor is _t however bit the usual grinding plants, so that it is because of the known Disadvantages did not come from general application, or the above-described pre-milling and grinding process is also used in the special earth manufacturing plants for the time being.

The aim of the invention is to improve the current one Ordinary bit ball mills carried out and mostly wet milling in such a way that the numbers are more modern and with lower budget and energy requirements «so with greater Capacity and higher efficiency as well as with less noise pollution can be carried out

You invention is based on the finding that if the Aluminum ores, such as bauxite, still in Stückfona, depending on the type Size of the pieces for 0.2 to 12 hours, usually at a grain size τοη 20 to 30 mm for 0.5 to 2.5 hours, with a part of the digestion liquor to be used later mixed and kept in mixture, the structure of the ore can be loosened to such an extent that the Ore / Lye-Genisch can be ground in suitable Eahlpumpen on the desired grain size · The grains are as a result of their The capillary network is thoroughly saturated with lye under suitable conditions and due to the fineness of the grind that can be achieved their active surface grows strongly

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The invention therefore relates to a method for pretreatment and counting gluniniuzhaltiGon ores for the alkaline digestion at the (toner discussion, rich thereby is characterized in that the louse to be used in the digestion cowieso or a rope of the same for pretreatment the lumpy or, if necessary, roughly pre-reduced cm Era cugesetst and 0.2 to 12 hours long, cwccknäßigerEreisö 0.5 to 2.5 hours long, kept in sync with the ore, whereby the ore pre-swelled and a (dell of its Aluainlur ^ chaltcc dissolved out, with new capillaries in the ore for uptake the opening opportunity arise, and the erskürner nit the Lye so soaked and swollen that the loosened grains with a liner, expedient an Ilahlpumpo, or without theeao easily dispersed and in a Suspension, vorsugawelse a see nlt grain sizes of less as 1 ca, which are then processed into clay in a known manner.

The oluninluza-containing ore, if necessary, is therefore beneficial to the invention after pre-crushing, to a grain size of at most about 20 to 30 na, dt the sun need information Lye or with a toilet of the same for 0.2 to 12 hours, pre-soaked at a temperature of 30 to 90 ° C. By loosening the structure of the ore grains swollen in the lye, the hollow, for example with * Kugolnühlen, unnecessary and the ore / lye-Gcmioch with a grain size of at most ctxa 10 to 20 ca can be in a special Kahlpunpe can be drawn to the necessary fineness. A part the ore / laugo suspension thus obtained and / or the through Coarse-grained rope that has been separated off from the classification is then returned to the oil pump if necessary. The suspension The desired grain size is further processed in a known manner for the production of alumina

In the method according to the invention, the cold or penetrates expedient «poor leg digestion as well as in such a way for application

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Laugo or just a toilet that is necessary for digesting the lye into the grains of the aluminum torso, which has an Eapillary structure, and thanks to its penetration it can leach a great deal of the hydraraillic alinination of the broth already during this pre-leaching period Kornor gradually enlarge the capillaries, cio nohmon even more lye and so during & ca zucansonscina the lye laser soaks and swells the kernels more. The pieces of ore were practically saturated so that after a certain time they disintegrate and are easily broken down, which favors the elimination process extraordinarily, and so this can already be carried out with a Kahl conveyor pump Process V0IH3 is switched off, because the llolil-rürdorpumpo also manages the dispersing with daa demand at the same time.After the investigations of the Anaolderin, the original hardness of the ore can be reduced from VJert 5 of the llohoschen Eürtesliala through the application of the pre-swelling process to a degree of 1 to 2 of the l ohsschen hardness scale can be reduced, the sharp crystal edges and crystal edges are blunted and the lumpy Aluainiumorz bekonnt a loose schwaiorilge structure · Consequently disintegrate the bauxite chunk even at a smaller force effect and also practice eino much c ^cr iOoOre Abnutzungowirkung than the unprepared Bauzitotücko · In this way, the STCock, according to the Kahl-rördorpumpon, manage the boiling almost immediately, as soon as the bauxite, which has been swollen for a long time in the lye, comes into its life with the Laugo susairrsn. The bauxite needs more verwoilsoit in the steel plant, as would be the case with the EU members. At this -! Wake, Uahlpunpen with 700 to 3,000 revolutions / minute, which in the industry cun tahlca of tatorialion with soft coagulation, be . So the Hahlpumpon are often used in the leather industry _t Collulosolndusfcrlo, paper industry, pharmaceutical industry

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Industry and job interdisciplinary. From the series of well-established Fampen eolon, for example, the following are mentioned: CIo Drehachoibcnpuspon, such as the Gorator pump, odor dio nib sieve drum _v Ililanem and pumps provided with blades, such as the BsacedlGS-Punpö, odor dio zu Eontonitnahlen developed DsEintSindratorΓ Funps However celbstvorotandlich also other © bit See r- and / or impingement IMD / oäor pressure force arbsiton · de pumps, beißpiolsrxoico dio also initially llahlon trained Ereieolpumpen odor Cchraubenpumpen and troiterhin other Feinmahlolnriehtunson as Eu ^ olmülilen, Eur ütierführuns of vorbehandoltcn ore / L uge- Coinicals suitable for the desired Eornföinhoit · Bios © kfjnncn you eo been applied that the parts ψ nJLt not corresponded to Eorncroße after being extracted from the suspension sur Aufsaoosoite dor Punpcn are returned. The Ilahlpucpcn can also be used in conjunction with one another, in that they are built up one behind the other in series. Thus the kahlen otufcnivaise takes place, whereby the next one oahlpunpe is imor more finer than the one that precedes it.

The bauxite pieces can already prevent you from breaking ahead a rope dor AufcchlioOlau ^ e cuoasznsn so that Soaking the Broclion begins earlier and daa Breaking ahead is easier to follow. The optimal one ^ EerUhrungszoit Ewicchcn the bauxite and the liquid can 'of course not be determined in advance in such cases, because the construction pieces can be of different sizes. 121 However, the general determination of the addressee was that this was the case Breaking ahead by co lighter and with the less energy on · » wall to be carried out kcjin, Jo län ^ sr the Eauxitbrockes on The reason for the permanent pretreatment with the lye You are in touch. When the pre-crushing is accomplished dry is and the ealite pieces obtained ml * sinor grain size tob 20 to 30 ma lye used with a part of the cum digestion eusaenonsobraoht and from it a genius that can be handled well oh, can be made due to the relatively equal-

moderate grain size the cetninsclits preliminary and swelling time in Bohemia the pretreatment can be found practically well

In connection with the pre-crushing process, it is a very advantageous one Embodiment shows the borehole of the bauxite pieces dt the Aufccliließlauga cchon aa extraction place of the Bauxite ores begins and after pre-crushing or, if necessary, without this the bauxite from £ cr Grubo through a pipeline hydraulic cu days sur placed there lago or dio £ rzou3ung dor Eauxit / Lai sion and the corresponding pre-treatment and accordingly the bare dt of the Ilalilpunpo accomplished over Cag is odor the bauxite broekoa dt the lye through a pipeline In the Dnpfüncortoncrdofabrik golelto * been, where the processing dt dor Eahlp-Jirps can take place. In this Eelse can the pretreatment process of bauxite dt the advantages of it hydraulic conveying nutsbrin ^ end been linked, veil on the one hand, the necessary laucDVcrbcIiandluncsseit of the bauxites the duration of the Eohrleitunsnfordcrun ^ is guaranteed and

# Ί ■ Ά ΐ 1 Γι I t3 J_ tiH ^ L. 1 * J ■ Λ Ά -M WG W *. \ 11 1 i MKj 1 in the S. * *? ^ ^ L l J. ^ ^ ^ \ j 1 A..L · »- 1 ^ » * % Σ L · J * . . . ■ I λ , \ L · » m I Ll ■ J r _ ^ \ ^^^ * \ « I * * ■ | - *. - ί * ^^

sion is more modern and cheaper than the hcrliöcnilichcn Schaclxtverfahren becicliun ^ ctroico oils Fahrcougförderung for days From a practical point of view, it is extremely wet to make the extraction of the lye / bauxite-Cucpcnslon so sweet that dioso is only promoted in the form of a coarse suspension, until the final side of the source, which lasts for a few minutes, reaches a lot the hydraulic pumping is significantly lower than with a suspension that still contains pieces of oil.For further transport of this suspension of small grains through the pipeline, the usual commercial pumps are already suitable and with a grain size of 1 to 2

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mahlone bauxite is in this section of Eohrleitungs t ordorung due to the longer Varweilens in the liquor and the following from the nature of hydraulic Förderuns impact and Versehleißwirkungen fine too crushed (some ΊΟ and large) Squirrel ·

The ratio of bauxite to lye can expediently be automatically regulated, it being essential that the bauxite once so much lye is added that it covers the bauxite pieces on their entire surface and the bauxite / / Lye mixture is suitable for conveying with the Kahlpunpe Has consistency. Tom's practical point of view is it

P appropriate, in the pretreatment generally with about

65 to 85% of the total amount of lye required for digestion to prepare the bauxite / lye mixture to be introduced into the mush, but of course this can also be carried out with the entire amount of lye. To treat the door, the Bauxltstücko are kept in contact with the digestion solution until the required soaking is achieved and the grains disintegrate as a result of swelling «Wipe the bauxite chunks and the digestion solution is ensured

t Cloudy with a digesting liquor at a temperature of 50 to 90 ⁰ C, because εο the door opening / door treatment effect can be favored

In the course of tests, the applicant found that the swelling and performance and the wear and tear of the Ilahl pumps depending on the door treatment time and the touch tone in the Cheap Ginne. In some cases, when gate treatment times exceeded CO limits, the Kahlpucpo denomaen & o Guspenoion could be passed on to the decolorizing container for further processing without turbidity. Even with a shorter, two

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epiolsweico 25 "to JO Kinutoa, pretreatment was only about 15 to 2Q # dos ffeatatoffhaltes of the ground suspension after sorting the pulp in a closed circuit in order to achieve the desired grain size in the pump is returned to the circuit be carried out, eun example in such a way that the suspension srcraelnnußlg is passed through a series of 2 to 6 Uydrosyklonan connected in series with a pressure of 3 to 6 atii, the Eonuoprodukt is returned to the Mahlpucipe sur and the fine discharged at the top of the Hydrocytlonea The suspension is used for the usual work, for example in the desiccation container, is continued to dissolve.

You instruction nit the Aufsohließlause your pretreatment and the subsequent grinding processes carried out by the Uahlpunpa can, according to the invention, be carried out in several embodiments. Some embodiments of the invention result from the following exemplary detailed explanations in connection with the enclosed schomatlech drawings

Here are:

Figure 1 shows an embodiment, in which the gate-treated bauxite is scooped up in 2 stages using a scouring pump, and

Figure 2 shows an embodiment in which the vorbchandelte bauxite after Grinding with «inor Kahl Pump is subjected to a trub sorting ·

The Eauxlt B enters the treatment tank and »was of variant I already crushed with a grain ross tob

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20 to 30 mm and with variant II without pre-shredding as Bohbauxlt · There is so much caustic solution L in the chanaiun container 1 It is stated that it covers the bauxite brooch goose · The treatment container 1 is designed in such a way that it Lye / bauxite pulp through a in the lower part of the container The built-in tooth crushing machine is subjected to a comminution · Of course, the toothed roller crushers built into the individual treatment tanks 1 can be set in this way that the bauxite / caustic solution flowing out of the Eo holder 1 -Gemlsch can have different grain sizes depending on requirements For example, in variant H, the bauxite is wet in the first treatment container filter 1 with a Zabiraalzenbrocher, That means ground in lye of a coarser grain size. then The previously broken bauxite / lye mixture arrives in the second treatment container 1, where the Era is broken even further to a grain size of 10 cm not absolutely necessary, the drilling pots 1 with tooth Roller crushers or other comminution devices sn provided, but by using them not only the with lye pre-treated bauxite is pre-crushed, but also the dosage from the container becomes more even. The Bauxlt / lye slurry passes from the treatment container 1 into the screw conveyor 2 and is fed from there au3 into the balding pump 3 · in both Figures are those variants of the process according to the invention in which the production of the bauxite / lye pulp and the

W loosening of the grains through a sufficiently long contact side

between lye and bauxite in one or more parallel pretreatment plants I and / or II, illustrated · Both in variant I and in the Variant II can be proceeded in such a way that the systems were generally operated in such a way that the Treatment container · 1 as the treatment container? 1 with the bauxite and the lye is carried out continuously and the corresponding Vorwellseit in dependence on the continuously discharged hourly kenge by p ^ saesde choice 4 ·· laeeungavermSgtn · de · Treatment containers 1 or 4a »Loading

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handlungsbolianschere 1 elclierstollt · Ea can also co be proceeded that ssroi or nohrcre analogies in the Veise be run in parallel, that this sit tar I & uxit / lye-IUL-schuns periodically filled trcrdcn and trahrond the one plant after an appropriate pre-treatment time on the bald " pump 3 switched let «in the parallel system or in don parallel plants the pretreatment depending on the pre-swelling of the bauxite / lauce-TrÜbo is going on one of its plants, conn Eua Eolepiol a source voltage of 60 minutes of gate viewing and four systems driven uerC.cn, periodically with ZoitvorschicLunccn of ίο 20 lilnuton nit so much Bauxite and lye filled, that their treatment with the Uahlptmpe It takes 20 minutes.

FIG. 1 furthermore illustrates such an embodiment of the invention-free gate movement, in which the pulp from the screw conveyor 2, even after further addition of caustic, arrives at the downstream vacuum pump 3. Babel, the cu a grain size of 10 ca vorcerklelnerte and aufg3lockerte bauxite in the first Ilohlpuape, for example in a Drehscheibenpucpe voa type Gorator "depending on their Einstellfeinheit below a smaller grain size than 1 as be bought nahlen · This suspension is then he needed in · introduced a set to a finer Corngrößo Uahlpuapo 3 it is su bcnorlrcn that the rear-Reina Dorsch old from SWEi or achreren Cnhlpuupen is not ewinconi because succeeded UL9T Anaolderin at nanchon Vorcuchon after Vortrankseitcn of more than 60 Zlinutsn nit bauxite place cn of higher Bydrargillitgehalt also With only one Uahlpunpa adjusted to the desired ilahlf unit to produce the Cusponslon old of the required grain size. It is sweclzaäßig to work with a starring guide in the cycle, great, among other things, to make the Fcrdorconse rogolbar bu, partly around the GloichauSi £ lroit to increase the size reduction Suspension CZ becomes from the dihlpusp · 3 after the addition of the still foaled part of the total digestion necessary

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Lye ueitorsaleltst and then with the help of the usual work ^ weitervorarboitet ·

FIG. 2 shows a colcio A'aofÖIirimrjsforn of the invention Process, boi vrolclior dio chest au3 of the screw conveyor, CiT2cIiiiäßlGcr ~ oic0 ebcniallo after further Lau ^ cnsu- (, in the Cahlpirrpo 3 Göl ^ G ^ a dio da3 vorbchandelte and c ^ -

Eauxit / Lau ^ o-Ccalsch alt oiror grain size from 10 "to 20 ca EU a fceaticxScn vorc ^ c'-tor ^ n Foinlioit cerkleincrt, t.> Tei also here a Toil Cor ccnahlcncn CU3pcnsion ia Ereislr.vi BurückGof ^ in? T be l ^ inn · Bonn \; iri dio ßucpenaicn nit UIlCo

Directed. Dio Gclilai: ~ pui2p3 4 fCrdcrt die corlrleinort © Bcrid-tsu3pcnaion nit einost cn'ccsprachäcn pressure of about 3 "bio 5 atü in the aus © inen or ccircrGa hydrosytlonen beatelisnde! Txll-o-

5, from r / olchor daa crispy product cur Einlcufüff-

»Cucpendcn C3 durcli Cr ^ abo eilner woitoron Lcuc-n-: ccgo L ßur cta Au-cclilu3 πο« ΐ7ςηΊΐ2οη LnUG ³⁵ T ³ . ⁰¹ ^ ⁰ result in the usual Vorarbaltunci-trafo, boicpiolcwoiae ßu den

\ 7cit3r3eleiwot «rirvi.

E3 iat to bcnerkon that ea E-BTsekcüßis, all of the Bciiandluncsbc-Iililtor 1 old of the Fördorschneclio 2 to have and the Eaunit / 'auco-GoaicsIi with her in the next treatment container 1 or in dio üahlpuapo 3 for woitorcube can demand -ort rorclcn that dio LaußO ovc-ntuoll cchneller from dca Eoliäliar 1 LcraunflioSt alo the Eausit.-tüclio, and eo can the 2uoai ^ cnsc1; ruri3 Con Ea ^: it / L3.UGC-Goaicciioo by and large on dan ^ ²¹¹ E'iveau received trcrdaa · Fallo der Vorl>Ghandliir.:; 3- tasicuur-ccvaiao VorlüOunsGVorcsns he hjdraulioclica TCrdcruns In dor HoLrIoitung before cicli goes, the nocli G- ^ bera horns. aVtTrvOincnde Bauxite / La '^ c, - ** -Suspension οΙηη ^ βΕαβ corresponds to the ticures 1 n: vl 2 ! in dio llahlpuinpo 3 and from diecer the ca.oponsion cntccder is forwarded through a pipe line: eggs Γ'τ, ΐα * 1 enteprectond unmlttQlhar in eino on a fine ü-hlii-ug eingaatelito

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BATH ORIGINAL

next L'aklptapa 3 introduces odor ait help of sleep puapo 4 Figure 2 promoted accordingly to the Trübeklacsieranlage 5.

The inventive method is illustrated by the following Examples that are not intended to be limiting are explained in more detail.

There were 6.5 tons of Ermsit from Isskassentgyorgy a with a ₂ O ^ -C-GtLiIt of 50.575 and a Kcclul of 0.2 tu a grain size of at most 50 cna vorgcbrochon uni with 7t2 s Uatriumaluminatlauso a with an Ea ₀ O-Gc] ialt of 190.2 g / l and an Al ^ O, content of 78 »4 c / l and a temperature of 5 ^ ° C mixed and stored in a container for 30 minutes. The bauxite soaked during the early period of the container a pair of cream whales with a size of no more than 10 to 15 and the bauxite / LauGe-Geaicch wordo cu ^ loicb Was done for the purposes of the Synchroniörderaa with the screw from the ϊΓοΙΙβ dsr screw conveyor old a belt drive from csc-Caetcr over and above us cabo further LauGonaensen of the above Ilonaentration in ο ine specially trained and with 1,400 UaiSrchuncoii / L ^ i ^ te running Horisontal-Gorator-Kahlpunpo of 5Jyp 25 / 10-10 introduced. The Lauccnzugaba in front of the ITnMpuapo was built in, the building site of the Bausit / Laucs-LUccImns in dor tüilpumpo was about 3C0 c / 1. Dor vorscrkleinerto Eau ^ JLt and dlo Lcu ^ e wurdoa after the Cccinn des liahlvorgo232D kon'jlnnlorllch üea se ^ ca ^ ten Eohlilter euc; o-Besoen, and swar enüsprechond der Leiatuns der Uahlpunpo in

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ORIGINAL BATHROOM

hourly slopes of 9 tons of bauxite and 10.5 »lye de? Eaunit yourselves to continuous eating JO Ulnutsn in a bowl.

On the basis of the Siebanalyce dor nacli the hollow pump entaonsanen ßusponoion erc ^ clcli der Ciobrliciotand aa Ji ^ yüa-EIeb iva 6, ^ 5 and dor Cicfczuckct ^ d cn 200 lon-Gieb su 9 * 1 ^ · AoT Grund der Sicbaiialyse der T-nal in the Eroislauf in the üaiilpuspe su-

was there

on the 3 ^ 5 um sieve 4.2 ^ and about 200 yua ~ sieve 6.6%.

£ 3 were 1,8 t Eauxifc from Ilyirad old a g ▼ on 49 «5 ££ and a Llodul vcn 7» 6 nit 5 & Ilatriumaluainatlauca Bit a Ka ^ O-Cciialt; of 205tO g / l and an aa Al ^ Oz-Genalt of 83,5 g / l vernissclit and 90 back in a Bohaltor left. Ssr cotv'SL ±: t & Eausit was then arranged ait a UalsocbrecIiQrpaar, wolclico trio described in Example 1, su a Horr ^ rCHa vo ^ huchGtcns about 25 to 50 va fiorlileinert »and at the same time the funding 81133 described in Eoicpiol 1 ; · Bio Eausit / Laucjo-Kischuns was made with the addition of a woitcrea l2U33nncs30 of 5 or the above concentration by the I? 3Merschn2c2: e a correspondingly aus- W gobildoton and with 1,400 revolutions per minute

Horizontal-Gorator-Uahlpirspa supplied · The in the pressure line of the Gorator-Funpo eof lcs ^ sne ο ^{2 ::: £ ώ} 1βηο Cucpension had an Eorasroßa from Lüchatoiia about 2 cn. The co vorzsrkleinerte Eausit / LaU3e-Susp-3ncion \ rardo in a Kahlpunpo vom Cesinte-Crator-ü? Yp ac: 3rilli3? I ;. Hit this trelcalpunpsnlike cusgebllileten Doaintscrator \ mr2.3 finely ground the suspension and waitortsiordert.

Because of the Glofcanalyo cl8r after the disintegrator

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The Guspcn3lon removed was the sieve residue in the 315 xim sieve and at 200 jun-Cieb 3,675.

Eelrr ^ iel 3

3.0 t Eausit from Iosl: s3 * entsyorgy nit a -.- content of 50.5 / 5 and a UoCuI of 8.2 nlt 4 *?

a1, T? atlGU33 nit an I7a,> 0 content of 190.2 and an Al _o 0 content ven 73, ^ J- c / i nixed and JO long in a container. The soaked bauxite was then hurried down the pair of brochures attached in the lower tail of the ecliülter3 to an Eom ^ rose of liöciiGtcns about 25 to 30 sot serlrloinort and at the same time through the ITördcrccIiiocIra attached below the casing into a further container. In cLiecesi Eclaltcr irarde the bauxite under su ^ ato a further run-off from 2 tr of the above concentration again 30 J ^ inutcn lczz, then when torn out of the container with a similar depth in the upper containers cu a KorasrciJa from hochstcna etca 10 to 3 15 nn Eerüeinert and Cl ⁰ ^ cI ¹²³ It ¹ G GleichrCDis into the rSrderscimeclre attached below the Eelialtera similar to example 1. The Eausit / Lause-Suspeneion was carried out by the rurlerachneclie of a correspondingly trained and nit 1 400 DidrehunGön / lIinute running Gorator- -üahlpunpa cu ^ G and ca her inswicchen a solclio Laucennanoo was continuously set that in dor LIahlpunra an Eaux clt content of about 3CO / l 1 oiclierGectollt was · The from the Gorator-Punpe aucGotretcno c ^{ca: in} ^ ^{Ci: ie} Gucpenslcn wurila through a ßchlacrpusipe nit 3 * 5 ^ tU in an Eydrosylrloa c ² * · leads, from which the Ecnuopro-Sukt (etra ZQfc the Gecant ) The inlet opening of the llahlpunpe was returned.

AuT Grund dor Siebanalye · the through the immersion tube of the

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BATH ORIGINAL

Dip tube of the Eydrosylilonss flowed fine-grain suspension the sieve residue on the 215 iun sieve was 5 »G # and on the 2CO / µm sieve 7.8%.

It was, EoKbauxifc by IssZrassentcyörsy · with an A ^ O ^ -Cshalt of 30% &ß>«&& elüssa Uo & ul of 7» 51 ia his Ilauptasnjo au einer Korscroßö vca 20 to 53 xaa vorsorlrleinort and nit Hatriumalumiaatlaiisei, ^ & iiisei, -Content of 193 * 4 · g / 1 and an AIgU ₇ -GcSaIt? vca GD _# 1 g / I had, in a versGlLenaa DsiiUlto :? under continuous zucabo and removal in the üoiso vsraicclit _s that the imported bauxite in the Bohaltenor oino Teriyoilzeit of about 10 LLLnutan. The bauxite / lause triibe from the container was carried out with sucaca by troitcror Lauco through a sloppy tube into a tube with a lance of 300 m and a Eurclimesser of 150 mn gaärüclit ι solution of 1 t 4, customs cleared with a GeechwinHskolt from 2.8 to 3 _t 0 n / o about 2! Iiahlpumpo of the type ZZQQ3 25 / 1-5-151 ö-ie was equipped with an inlet funnel · The gap between the teeth of the eotor disc and those of the built-in stationary CcgciantQ was about 1.5 cszahnto ^ ³ ! ¹ * ^wa -i Lochorn densely perforated with EursI ^ issEsrn vob * ca. Also this Gorator-Pusps the Crüba glancts with an Eornc ^ üsss of at most about 1.5 ism olt-s Gorator-Funpo differed from the first only in that boi'dor cvaitcn dor Cpalt c ^ icchcn the Eotorsümsii and the Ccsaentzähncn was about 0.6 cm. Tacli the grinding with the s ^ eite® Sörator-rucpe trurdo the suspension with a Eorngrj2® voa lieefestesa etea 0.6 na with a Turrpo

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"" - - DHW % φ Λ -

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pushed through a hydrocyclone block · The cone product of the Cyclones were returned to the second Gorator pump

Due to the Cicbanalyso the through the immersion tube of the Hydro sy kl on it flowed fine suspension was the screen printing stand at the 315 / un sieve 4,4> £ and at the 200 iim sieve €

Eohbauxite was pre-corked from Xßsskaasentgyörßy old with a gO ^ -chalt of 50 _t CS; 5 and one in Uod ul of 7.51 with roller crushers in its main mill with a grain size of 20 to 50 eggs and with Satriunalunlnatlauc © with an Ila ^ O -Content of 193 "^ gA" to an Al ₂ 0, -content of 80.1 g / l mixed in a LIlsch-Fördorschneclio provided with an inlet funnel. The bauxite pieces lingered in the snail aueamcn with the laugo under intense Ui- * eutra 7 to 8 minutes Dor bauxite golangta from the tendon with further lau-cnsrjsatio in an old 1000 Hmdrehun ^ cn / LIinuto running Gorator-T-Iahlpunpo from Type ZZQQH 25 / 15-15 · The ratio of bauxite to lice was reduced to about 1 3.5. Dor Cpalt evischen the Eotorzähne and the Segmsntaühnon the llalil pump was about 2 mm Vmrde circulated in the Hincleituno for about 40 minutes, which with a front speed of 3 n / s corresponds to a 24-fold necking, that is, taking into account the comminution in the pump, corresponds to a 10 km long transport path.

On the basis of the sieve analysis, the changeover after 40 minutes Välsen removed Proba was the sieve residue on the 315 ^ in the sieve

- 10 -

0 982 5/0589

BAD ORSGLNAt

tO; j and an 200 jun-SIob 6,1 #.

The parts of the gate of the inventive process are expressed in the fact that the alkaline pretreatment of the aluminum-containing Ezzoa through its thinning and structural loosening causes a fall "or disintegration" 3 "ror £: ari3" and that the energy requirement of the comminution and bio-soldering is significantly increased are so swollen by the YcrlicliaidluiiL'GVGVGrfeliren that the basking of the eauxitca with ball mills is superfluous and the unrefined llahlfoinheit can be achieved with the invention applied ilahlpuzipen than when milling according to the usual methods "because the grains themselves become softer and the lye also acts as a lubricant. As a result, the process of exploration work can be more contemporary, with less need for meat" with higher efficiency and less Noise pollution are carried out

Claim

209825/0589

BATHROOM ORIGINAL

Claims (1)

Pn t rr t at no r * '* ch 1 «) Process sun preconditions and numbers of aluminum-containing ores door the alkaline digestion in the Sonerdcherstollun ^, thereby. G ^ Gn ^ seichnet that the uranium bsi "Auf3ChIiIn csrlcso eu used lye besich.unGSwei33 a £ eil dersoltcn to Torbehandlunc lumpy oiler ^ gc stcnenfalla roughly vorzcri & einertcn ore added and 0 * 2 to 12 hours lan ^, ^ sweclnnoßic rweiso 0.5 up to 2.5 hours Ions "in Geciach with then stop and the Ersliürner old the L & u ^ e so" drank and swell "d & 3 can the dissolved grains with a hall device, ewcclimiißiGersreice a Kahlpuapo, or without serving, lightly dispersed and in a suspension , in addition, one with the size of an owl of less than 1 isn is transferred, which is then processed into Y.oica en clay, which is known per se. Process according to claim 1, characterized in that the process is held in one or more, separate bit crushing devices, in particular tooth vale breakers, treatment holders equipped with the closure of a concentration known per se in a mixture and «Treckcüßigorwelse brings to a grain size τοη below 30 ma. 3.) Method according to claim 1 or 2, characterized in that that the alkali treatment of the ore can not be waraer Lye, Swedish-style exreiso at a temperature of 50 to 90 ° C. ι- ·) Method according to claim 1 to 3, characterized in that that c & n the impregnation of the ore with the lye intermittently or continuously, c ^ cckcößlgervelso in the Egbandlungsbehalter Education ^ oisa in the Cchandlun ^ a- - 20 - 209825 / OF89 ORIGINAL BATHROOM keeps hydraulic pumping in the odor bsi dor Pipeline. 5 ·) Terfahrsn according to claim 1 bi3 4 ₉ gekennseiclno: that can fiaa clUircnil dbr pretreatment old of the Lat ^ e eirci corlxleincrto ore / Lause-Ccsilsch bit of an Ilalilpusips, succkiiaBiccrroiso with ar kcn'oiniortor Anvrcnd Druck- cniü / or Pral 1 hit ton _t 6 ·) Method according to claims 1 to 5, characterized in that so »Biepsrgiaren des Erses Hahlpuapcn Tom type Gorator and / or Basintcsrator vcr ^ cndot · · 7) The method of claim 1 bie 6 »characterized gckennseic! _T mot that can die Eiren with the Eahlpuspo ccnahlene ErB / Lauso-CrL3-pensica cdsr part thereof and / or by ElacGleren sroTsIiurnigen cbgotrennten target of the suspension in the Hahlpuspe zurückfuhrt" ! - ■ ■ ■ BATH ORIGINAL