DE2633626A1 - Separator for ferrous and non-ferrous metals - uses ferromagnetic particle-contg. adhesion substance coating with subsequent magnetic sorting - Google Patents

Abstract

The separation method is used for machine parts containing a variety of ferrous and non-ferrous metals. The parts of the mixture are coated with an adhesion substance contg. ferromagnetic particles arranged so that the substance will stick only to specific metals and the substance can be removed mechanically or chemically only from these specific metal. The parts of the mixture emerge from the treatment with an adhesion substance coating contg. varying thicknesses of ferromagnetic material. The mixture is then subjected to a sorting process using the lengths of deflection paths in a magnetic field.

Description

Process for separating non-ferrous metals

from non-ferrous metal scrap The invention relates to a method for separating non-ferrous metals from non-ferrous scrap, especially for cutting non-ferrous heavy metals from a mixture of solid metal parts.

The separation processes used to date for sorting such scrap deposits are not satisfactory. For example, scrap metal is tried by hand to sort. This only leads to a partial result, since it is only coarser and recognizable Pieces are included and the rest of the finely crushed scrap is not included will.

Even the known melting process does not lead to a satisfactory one Result, because the metals mix with each other or amalgamate with each other. Even with this measure, the desired result cannot be achieved.

The most diverse floatation methods have also failed because the The weights of the affected metals are often very close to one another. Then there are the high costs, especially in the case of wage labor. Incidentally, the experience has shown that only magnesium and aluminum differ from the other non-ferrous heavy metals can be separated by the floating method.

The object of the invention is therefore, in particular from a mixture of non-ferrous heavy metals such as Cu, Pb, Zn, L's and non-magnetic steel the individual To separate particles in such a way that they return to the economic process as clean metals can be fed.

The invention solves the problem posed by a method to the mixture a finely divided ferromagnetic one serving as a carrier and Eaftsubstanz Particle-containing substance is added, which is preferably only at predetermined Metal parts of the mixture adheres or only from predetermined mixture parts through mechanical or chemical cleaning processes can be removed in such a way that the batch parts after this process at least ferromagnetic with coatings of different densities Particles are provided and that afterwards in a magnetic sorting process Utilizing the deflection path within a field, the final sorting takes place.

The advantages of the aforementioned method are obvious.

Chemistry is in the day, adhesive substances with the most diverse Properties and the most varied affinity to the individual types of metal to make available, so that an enumeration of certain substances in this place becomes superfluous. It is irrelevant whether the raft substance is at first all parts of the mixture are evenly coated and only the adhesive resistance to it mechanical or chemical solvents is different or whether the adhesive mass attaches itself to the various metal components in varying degrees of strength. It is only important that the various components of the mixture in show a different process to a magnetic field.

In an embodiment of the invention, after the sorting process, the with ferromegnetic adhesive particles provided batch components a washing or Subjected cleaning process, such that the ferromagnetic coatings again Can be used.

In a further embodiment of the invention, it can be advantageous assign a preferably non-directional proper movement to the batch parts, in such a way that that the mixture particles by ultrasound, air turbulence or vibrations The support surface is forced to move its own, which support the sorting process and, if necessary, significantly improve the separation effect.

When carrying out the process, known presorting processes can of course be used can also be used to reduce the set amount in the process according to the invention to reduce.

The advantages of the invention are essentially that the sorted out Batch components are actually pure metal parts and can be sold as quickly as possible goat can be recycled.

Claims (3)

P a t e n t a n s p r ü c h e Process for separating non-ferrous metals from non-ferrous metal scrap, especially for separating non-ferrous heavy metals from a batch solid metal parts, which do not indicate that the mixture one o-d9r several finely divided ferromagnatic solids serving as carrier and adhesive substance Particle-containing substance is added, which is preferably only at predetermined Metal parts of the mixture adheres or only differs from predetermined mixture parts mechanical or chemical cleaning processes can be removed in such a way that the mixture parts after this process, at least with coatings of different densities of ferromagnetic 2 items are provided, and that afterwards in a magnetic sorting process Utilizing the distraction path within a field the final sorting he follows. 2. The method according to claim 1, d a d u r c h g e k e n nz e i c h n e t that the mixture components provided with the ferromagnetic adhesive particles are subjected to a washing or cleaning process after the sorting process, in such a way that that the ferromagnetic coatings can be used again. 3. The method according to one or more of claims 1 to 2, d a d e n g e it e n n e i c h n e t that the electromagnetic or magnetic field @aufendenge a preferably undirected tissue to be classified is, in such a way that the batch particles by ultrasound, air turbulence or Vibrations of the supporting surface's own movements are imposed, which the sorting process support.