DE1583190A1 - Process for the processing of the solid residual product of aqueous solutions of ferrochloride - Google Patents

Description

Dipl. Inq. R. Merten.

Patent attorney XgXX £ | © gXx | 5 O O Iü U

, H; »p Hilmmlr. 40-42

Frankfurt / Main, August 28, 1967

- K 83 P 22 -

ii U ΐ II r. 1Ϊ R Indusurieplaaunga-Aktiengesellschaft

in \ ^: f ie η 3 (Oesterx-eiuh) Salmgasse 6

¹¹ yei'iahren sur ^ Uf>a'b «Itunj dos solid roasted product of aqueous solutions of.

x5 in various technical processes, e.g. when pickling steel, large amounts of aqueous solutions of ii'eCLp occur, which contain more or less maize. In order to regenerate such solutions nuch modern processes are evaporated in r Inem operation and jiiaenoxyä roasted to free hydrochloric acid and, iiine series of Itegenerationsverfahren has been developed, as for example odor Sprühröstoder Fliessbettverfahron also eino combination of both methods.

It is often disadvantageous that the roasted product is entirely or partly very dusty and voluminous and 3ου / oh 1 aa transport also causes difficulties without goal scoring. For example, when the solution is sprayed into hot, empty cafeteria, a solid product with a 3specific tolumone of 5 bic 5 liters per liter. The product is uusaordörn hot and, due to its loose layering, only cools down slowly.

Therefore, the first method used was filling it up in sacks, the high! ciea problems not very good-uot. Apart from the too small TemperaturfoatigkQit üulichor l.; Uteriulien for such sacs

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If the cost is too high, the 'roaae' transport volume is also not attached, and no emptying The sacks cause the jam problem c.ufs neüo.

Hit some success, but at a great expense could ..iun da ^ product inooh & nisoh compress, e.g. between V.'alsen or in ^ rikettiereLariulitiu ^ fcn, d ^ oli were the investment and operating costs and not ultimately der., ei-kzeu ^ vei'schleiss through the abrasive product So high, also the sense of esteem of the Tesoneans was between '.alzen produced compression products for transport and finishing not tiusroicheiid.

Completely übarraüoheiau found a ..e.j that Product without any compression on the simplest v.e ^ to compress and at the same time remove dust and agglomerate, In accordance with the invention, the optionally pre-cooled Roasted product with ',.' Assei ·, preferably in oixiör kenge of 12 to 16 wt / o with a reduction in the volume of the eyes, in a decent way, preferably without any remedies additional pellotized.

Lan can according to the invention also pellets with a V / asaer brought out of the shell, preferably granules of 12 - 16 /;, for example with 20 or 25 / «, dooh the economic-technical optimum is between 12 and 16 / j, partly because the V.'asser boim apätsren Burning the pellets must be evaporated ,, iJindemittol, such as, for example, sulphite waste liquor, are not possible to pelletize required, can jotlooh without any prejudicial effect on the Sohüttgewielte be suspended. AIa pelletizing

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bcsüiiübi-s suitable unique 1 to your L-Ehr-ggest hurried "axis rotating! Drums uit 'iut gave up at the top and pellet ejection at the lower end. Only the transport route to the pelletizer system and these devices themselves must be as tight as possible carried out or extracted. Since it was compressed to almost a tenth of its volume from the ax in Pelletforru itself not ..you dust, the prcble are: r.e Transport and dust solved surprisingly easily.

The most surprising thing about such, from voluminous Oxide made pellets is, in comparison to that Fine ore pellets, their much higher strength.

The pellets made from regeneration oxide can therefore be poured into the tank, filled for transport and or ent 1ε; άen without any special precautionary measures. Above all, however, they can be made with a small diameter ( e.g. 3 to 5 mm) and mixed with, for example, coke, and processed directly on a Sinfer belt to make Uoehofonsinter. One embodiment of the successful procedure is the processing of the oestpi-ocract aqueous solutions of ferrochloride in the way just described to produce solid iron.

liie production of solid iron is, however According to the invention also on another ".ege possible, which is sometimes an advantage by burning the roasted product pellets produced by direct heating hot gases and use of the hoarded pellets in

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a reduction furnace for the production of iron e.g. a Blast furnace. The reduction z., 3. with .Yasserstoif leads to carbon-free sisen of the highest purity.

After all, it is often from the enjoyment of the invention Advantage, already in cer production of the pellets Roasted product, etc. the water iron ore powder, additives (Lime, biscuit dust) etc. to be added. Cut such pellets made with sisenurz powder and spray roast oxide a much higher strength than pure sisen ore pellets, even if the addition of the finest oxide is only about It · j.

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Claims (2)

Claims: 1. Process for processing the solid roasted product that occurs during drying and roasting of aqueous Jerrochloi-id solutions arises, characterized in that the optionally pre-chilled roasted product with v / ater, preferably in a length of 12 to 16 Ciew.yo under Reduction of the bulk volume, pelletized in a manner known per se, preferably without the addition of binder will. 2. The method according to claim 1, characterized in that up to 90o of iron ore powder is added to the roasted product during pelletizing, preferably without the addition of binding agents. BAD ORiQfNAt ing.K / Sohi. - 5 - 009831/0367