DE1533123A1 - Process for processing titanium ores - Google Patents

Description

Dipl. Ing. R. Mertsns ^:

PcJtöri!; I; - «Avalt
frcn! <fcr! / M., N-jus Miin ^ rstr. 4 (Wed Frankfurt / Main, June 20, 1966

• i-'irua KliTiäfDit In, usträ. e / lanungs-Aktienijes, llr.c ·. «i" c in 7iai; Salmgasoe 6

¹¹ procedure .. ^ r Aiii, umreit in ^ j voa i'i tuneraen

Daa υ_ · Γϊη · · .Ιιΐϊ. ^; Ü :: ii.lije Vyx'ji'yhren has riö3i_en ΐ-ιβ-η ^ ^ οη isensulfat that the ouiiv / e ^ of i'itaner s, v / ia Iluenit, aiu'alien, zu uujehex., Uav /. aiii a toomriaOii uu uev / iilti ^ enä ^ e hatred depreciating :. Duü. ',.! Ue Veri'c.iii'eii boiiüialte ";; iu v / e public 4 work stages.

1. Selel: bive, -i solving the üisenoxydcUibuilus i:; i ιλϊ uurch.

Salassilure _}

2 » Washing of the obtained ^f i'iü _o -tin concentrate, which is closed unsciiiuating in the known manner and is further processed.

'j. The acidic iron chloride solution obtained by dissolving and washing heats up to free hydrochloric acid and iron oxide,

4 · Recirculation of the regenerated free hydrochloric acid in the closed cycle to the first stage of work.

When treating powdered ilmenite with dilute, at most approx. 20 liters of hydrochloric acid was surprising found that, in addition to some litan oxide, essentially iSisenoxide goes into solution and that with increasing iron concentration always there is less litan in the treatment liquid until eventually a solution with approx. 80 g ϊβ / l and only approx. 0.4 g! Di / 1 results. This corresponds to an Lb ratio of Ti: Fe »1: 200.

BATH

Eggs of ura ^ round ^ Laenit become besides jjüsü., Uuc. vA ^ ive ije, leitele .. iente like iia, jni3s'iü; .i oaor ja .-. ciiu l.üraiia jI. y ^,.-u .. ^; jl en'u;, "t3ut ^ in verxif-vLtnis.-iiliiij pure, ■ ± ± l> -r ^ io .; j i.uucjentr ^ l ;. Sü will b.is ^ i ^ isv / jise oei bieileteuj 'jr .: ur i-.u ^. ..... d .. * ^ i ..; i.:;it with ^ 3 / ■ »i'eO uncL.; .- [; J i'iü -, (Vüriiältnis 1: 0, öd) j: .u. Noniionsv / e.L '\ "3 l'iu.-.- Vöi'lus co ο in ^ o: .i; started eriii:.! tüi. ....;. τ ..> j ^ eU u; .i du> i '.CiU ₂ (ratio 1: 7, p).

V / emi the ^ enandlun; in i-ührurön üxui'ei, n. ^. :; v / yia'i; iii "i _o im ue,; · just rom duren ^ ifahrt, / ira, bei: oi..ai" U man Log .l ^ eu i.; ii 14 υ ίί and more i 'e / 1 and v / eni j ^ r air; ü, l -j; 3? I / l · Jas ll ... e.iitkonii ant rs. ·, T beseeirfc aua i, ov »i» ^l eü uia u4> j TiU ,,, '. ■ .- “sa ^ iiem 7 rnältnia 7on 1: 2? is equivalent to.

In three stages Jcjü-nstror-ioehp.ndiun ^; i - uii laan assumed md 90 Jj Tiüo and »/ eni ex * as 2> -ί i'öO i: .i Kjnaontra ';oi'rich. JJie HÜl-Konsenti-atioii / iri so ^ e './ counts that after the ^ .hand ^ .m _o · dea ilmenits the üuuhie aua free and ^ bound HJl is a maximum of about 2ü><>. Jie Üehandlun ^ at higher boiling ala; ü_jüratur accelerated under pressure and veroesaert uaa xir _o ebnis wherein xiier as pressureless process obligations all types of known apparatus, jJinrich-), and may find use circuits.

The concentrate is freed from the hydrochloric acid and ferric chloride solution in a known manner, for example on a cleaning machine, filters of all kinds or centrifuges. The adhering solution is water Värdriingt, wherein the "/ aschfliiusigkeit advantageous Ge _c> -nstrorn performed v / ill.

The concentrate obtained in this way is, if necessary, dried and processed in a known manner with sulfuric acid or with fluorine to obtain titanium white or titanium trachloride. While with original ilmenite a weight part of TiO ₂ Ij 2 öe-

18.4 9 / 0463-

_ 2 - ORIGINAL BATHROOM

• // .. disfigure i Ml, ".,: ;; /. - \, o ^: j i'viic; FeSü,. 7 K., Ü i-nlieien, Tollen

"ϋίίί.ι i. ^ iizentrnt .- <r υ, Ok; ϊο, .ΐυ l'eü or C, Im .ιλ." .i.le ^ eSO. . 7 HpO; u .. jlür-; c; .iiüt au: L 'ionne IL.ienit form aici. söott approx. 2 (X Ü 3i £; only Mii. ■ r 40.;. j üi.'ieiisul-r.ti.e) t; 'j ^ drat, ocl- ^ i · uoiji An.'. ^ culuji iai approx. iL ^ ü j ^. i'eOlr. only my ₍ .c ic ^. The enormous advantages ueij i.ri j.jiai .: jb ^ üiiiäi ^ en Verf iuirens üoüii ^ xica of ϊ- · η Au., ο. · ::. ui ^ -itX'ji , A -oichtung uiid especially uezvjlich the ■ iiUühieixr. Elöü'uen jjiseijsuliatheptahyuratjroblems are serious.

The sales; ure Eißenciu-üridl Jsung üusai ./. iien iit ilen Uaschwas-ern, which uei.-u je naoli üeiniieit u-ia Ilnenits aucii aiiuere be ^ lc'itele ^ eiitfi such as U ^ Ul ₀ , UaJl among others contain Ji.loride , become ii: "better known .. ', ise: .. 3. Corresponding to the English pat -; - iit lir« 7> i «7v'v to the üxyaen and i'reier Salzs'.ure uarcli S ^ rühroston zei-setüt. uaii ^ ann but also tn. ±. -cieferor temperature only the xjicenclilorid abröstüü, v / ooei uie i.ic: t or nux · partly.

ϊ · ίΐ ".η can ■ uer auci; vorteiij.ai-arv / eise ^ ie xasencMariulösun _t j £ ^: lv s.jrührö.vt -.n and the rfaschwascer i? um sprinkling the absorption>: olojuie in uer SjriUirüstanla _o e use, vrodurc). Return the components of the washing water to the dissolving circuit under JiJinspar · αl ^ _u · von Vförue without loss of chlorine ions.

Finally, one can also use our aas Uasciiv / ater des Ilmenitkoiizentrates :: with the dissolving acid ge :: iinsai! i sprührörjten and only the wa,; cL..7t.s; that which falls out of the suction or a dissolving process, sur Kolo.:intnl) query. Us is any combination v / ie they ßici; when carrying out the process in question am {jünstiijsten ueijt to apply.

_ ν _ 9098A9 / QA63

BATH

During the dissolving process and during washing, there is a loss of hydrochloric acid not entirely avoidable. But losses also occur with spray roasting of Ühlorionen on e.g. not completely roasted Ferric chloride or in magnesium, calcium chloride. These losses in the entire cycle are not necessarily needed in Torrn of to cover new hydrochloric acid. This is done much more advantageously with elemental chlorine, which is either used instead of oxygen to the roasting process3 or used to oxidize the FeGIg to FeCl ^ solution to be sprayed. Here you can see the losses continuously by partial chlorination or by

^ cover periodic stronger to complete chlorination of the EeCl ₂ -Lo-Bung. In all cases, the chlorine is converted into hydrochloric acid when the FeCl is roasted. The use of chlorine instead of concentrated hydrochloric acid is preferable not only for reasons of price, but also because the chlorine brings water into the circulatory system. Finally, the losses can be fully or partially covered with bischloride, which is obtained, for example, as FeCl- when the iliaenite or its concentrate is broken down with chlorine.

The regenerated acid, if necessary together with the HCl formed from chlorine to renew Treatment and removal of the iron oxide content, i.e. in the first work cycle is returned, so that the entire cycle without the accumulation of waste water or exhaust air pollutants closed is. The only waste product is iron (III) oxide in the unity that corresponds to the ilmenite.

BATH ORIGINAL

" ⁴ " 908149/04 ·!

Claims (1)

1 · Process for the preparation of titania, such as ilmenite, characterized in that treatment of the iliaenite with hydrochloric acid before the actual digestion produces a TiO ₂ concentrate and a solution consisting essentially of iron (II) chloride and best salt acid »this solution converted back into hydrochloric acid by spraying agents and the hydrochloric acid is recycled for the treatment of new ilmenite, the hydrochloric acid being so concentrated that the total of free and bound HCl in the acidic iron chloride solution obtained is a maximum of approx. 20 #. 2 · Method according to Claim 1, characterized in that the treatment process at elevated temperature and possibly increased pressure is carried out 3 * method according to claims 1 and 2, characterized in that that the treatment process is carried out in several stages in the Ge ^ en stream will· · 4- process NaOH Anspruoh 1, daduroh in that the Wasohen of Ti0 ₂ durohge- -lvonsentratea in several stages Ί leads and the resulting wash water together with the dissolving liquid is regenerated · 5 * Method according to Anspruoh 1 and 4ι daduroh characterized in that the Wasohwasser is used for adiabatic absorption in the column of the spray roast regeneration system * 6 · Method according to Claim 1, characterized in that hydrochloric acid washing water is produced when HCl vapors are extracted directly or via the concentrate water into the absorption 909849/0481 BATH lonne of the Sprühröat Re ^ enerationsanlage is performed. .7 * method according to claims 1 to 6, thereby ^ e draws that the loss of HCl or oil ions by supply fresh hydrochloric acid or preferably by eleuentares 01 covers which either instead of oxygen is supplied to the roasted roasted roasted roasted roasted or used for the oxidation of the FuUIg au PeUl to be disarmed will· BATH ORIGINAL 14 * 6.66
Ing.K / tm