DE80467C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 40: Metallurgy.

Patented in the German Empire on March 2, 1894.

The present invention, a new process for treating nickel and cobalt ores, is partly due to the reactions already described in Patent No. 77427, built up; nevertheless it represents a completely new industrial process, which is also completely different from that in the cited patent in that the representation of these metals in commercially pure Conditions in a single operation, which in economic terms is very important improvement means.

This new process is based on two main reactions and consists in:

ι. The excretion of iron by oxidation and dissolution of iron oxide in particular basic or alkaline additives to be made, which together form a liquid slag with the iron. Suitable aggregates are the various Salts of potassium and sodium, aluminum, boric acid salts and the like; preferable is boric lime or boracite, but any basic or alkaline substance can be used use, which dissolve iron oxide and with the same at high temperature a can form liquid slag.

2. The sulfur through the use of certain, also basic or alkaline Reagents mixed with chlorine compounds of the same nature, such as B. lime, barite, talc earth, Soda, potash with the chlorine compounds of calcium, lime, barium, magnesium, sodium, potassium and the like to be eliminated; a mixture of lime and chlorinated lime is preferable; however, all others can also be Use substances which, such as B. cause the aforementioned, those chemical reactions can.

. A nickel or nickel is used as the starting material in this process. Cobalt stone which one obtained by crude melting of the mineral. The same is produced either by the sulfur, which is contained in the ore itself, or, in the case of oxide compounds, by adding ores containing sulfur compounds. It should be noted here that in the case of oxydeses, the product can be treated directly by means of this new process, which is produced from the raw smelting of these ores without prior sulphurisation. That Product obtained from the first smelting of the ore is in this case not a stone, but a mixture of metallic nickel and iron, both of which are more or less are carburized.

The reactions involved in treating this mixture are the same as in the treatment of stone or lech, with the only difference that one does not use the to precipitate sulfur, but only those necessary to precipitate iron Needs supplements.

The nickel stone or the alloy consisting of iron and nickel is made in one Converter, you can use any type you want; preferable but is the Converter Manhes,

which is preferably used in copper extraction.

In the following, when the method is explained, only nickel is used for the sake of simplicity What is said, however, is to be noted that the whole procedure is in all its details units can also be applied to cobalt.

The method will now be explained using a nickel stone as an example, which by Melting of a raw mineral with sufficient sulfur content or below sufficient Sulphurization is generated; Such a stone contains iron and sulfur as the main constituents and nickel. The treatment should take place in a Converter Manhes [the one with basic Lining, such as lime, magnesia, dolomite efc, is lined as an acidic lining the above Would not withstand surcharges, and accordingly would make the required reactions impossible.

The molten stone is poured directly from the furnace into the converter; as soon as Once this has received its batch, one begins to blow, which increases the temperature quickly increases. A part of the sulfur precipitates as sulphurous acid, while the iron quickly oxidized.

. However, the iron oxide goes under the extraordinarily energetic oxidizing effect of the through the melt blown air flow almost instantly into oxide, which would remain in a solid or pulpy state and create connections, which would make the continuation of the proceedings impossible. Here are now the The above-mentioned reagents or additives in the activity which have the purpose of removing the iron oxide to dissolve in the measure as it arises, and the same in the state of a liquid Obtain slag. For this purpose, the surcharges are in the converter according to Deepening of the stone and introduced before the start of blowing. As already said above, Natural borate lime or boracite, however, serve best as such additives Inventors also use any other substance that can produce a similar reaction.

When the iron is almost completely oxidized, which can easily be seen in the appearance of the flame can see, you stop blowing and let the slag run off. Then one adds the second row of surcharges, namely those, which the elimination of the Effect sulfur, preferably a mixture of lime and chlorinated lime, then you start blowing again.

The remaining sulfur combines very quickly with these additives to form alkaline ones or basic sulfides, and it ultimately remains in the converter ready for sale pure nickel, which can be cast directly into casting molds.

If the above-mentioned alloy of nickel and iron is treated instead of the nickel stone, the Although it contains a lot of iron, but almost no sulfur at all, the process is the same to the point where the slag obtained by dissolving the iron oxide is drained off running; then only pure nickel, ready for sale, remains in the converter.

In conclusion, it should be pointed out again that the procedure in all its details are also intended for the preparation of pure cobalt ready for sale.

Claims (1)

Patent claim: Process for processing sulfur nickel or raw nickel bezw. -Cobalt, thereby characterized that in a basic converter the iron is successively blown by it with the addition of basic additives and the sulfur by blowing with the addition of the Removal of aggregates protected by patent no. 77427.