DE568643C - Method of treating cobalt slacks - Google Patents

Description

Process for the treatment of cobalt sludge For reconditioning of cobalt sludge, a process has become known in which through in the cold a certain amount of acid dissolved the cobalt and separated it from the manganese at the same time became.

According to the present procedure it has now been determined that the separation of cobalt and nickel from manganese also with a corresponding amount of iron oxide or Eis.enoxydsulfat or copper chloride or sulphurous acid or with any other reducing substance can be done. The cobalt oxide or nickel oxide has namely the property of decomposing with reducing substances rather than manganese peroxide (Mn02) or manganese oxide, and it follows from this that one for the solution and separation of the Cobalts and nickel from manganese from cobalt slurries only have such an amount of a reducing agent Substance needs to be added, as is only necessary to dissolve the cobalt and nickel is.

c0203 + 2 Fe C12 = 2 Co C12 + Fee 03.

For the practical implementation of the process, it is advantageous to use a little more reducing substance than is equivalent needed.

Embodiment i A batch of cobalt sludge z. B. overall 10 kg of cobalt is used with as much water or lye from a previous one Digestion warm or cold .. mixed,: that a thick emulsion is created. Since after the chemical conversion Co203 + 2FeCl2 = Fe203 + 2CoCl2 i i 8 parts of cobalt around i i correspond to 2 parts of iron as Eisenchlorür are to implement the present 10 kg of cobalt around 9.5 kg of iron as iron chlorine, required or 951 iron chlorine lye with ioog / 1 Fe as FeC12. Slowly sit down on the mixed cobalt mud with constant stirring z. B. 951 cold or warm iron chloride solution with 100 g / 1 Fe as Fe C12 too. For the sake of convenience, however, it will be necessary to specify something to add more ferric chloride than is theoretically necessary. after the The reaction is complete, it is filtered and the cobalt-containing solution in known Further processed on cobalt. Should the manganese residue still be: something Contain cobalt, it can be subjected to another treatment with iron chloride are: Afusführungsbeispiei 2 The cobalt sludge mixed according to embodiment i with iokg Co content, Co203 + 2502 + 2Mn02 = Mn203 + 2CuS04 will be converted accordingly with around 10.85kg S02 (sulfur dioxide) in the form of gas or in solution, which slowly introduced or added to the mixed cobalt sludge cold or warm is treated. In practice, a little more S02 is needed than is theoretically necessary is. Due to special circumstances, the above reaction can take a slightly different course, 'and according to 2C0203 + 2S02 = 2COS0, + 2C00.

This implementation can be recognized by the fact that more and more manganese in Solution works. The supply of S02 is then interrupted, whereupon the formed Cobalt oxide from manganese. (as: Mangansup @ eraxyd- or Manganoxydhydrat) as a result of the different pressure of solution by means of acids - or in, others of the same kind Way can separate. After this. the cobalt is dissolved, the solution becomes better known Way treated further.

Claims (1)

PATENT CLAIM: Process for the treatment of cobalt sludge, as they arise during the processing of the lyes from chlorinated roasted gravels or other sulfidic or oxidic ores, characterized in that the dissolution and separation of the carbon and nickel from the manganese by treatment with the equivalent amount. a reducing substance such as iron chloride or sulphate, copper chloride, sulfur dioxide or sulphurous acid, oxalic acid, etc. takes place.