Searched for:
(1 - 20 of 39)

Pages

document
Rem, P.C. (author), Beunder, E.M. (author), Kuilman, W. (author)
Grade and recovery of eddy current separation can be estimated on the basis of trajectory simulations for particles of simple shapes. In order to do so, the feed is characterized in terms of a small set of test-particles, each test-particle representing a fraction of the feed of a given size, shape and material. In this paper, the grade and...
journal article 1998
document
Rem, P.C. (author), Beunder, E.M. (author), van den Akker, A.J. (author)
journal article 1998
document
Van Poppel, E.J.M. (author), Rem, P.C. (author)
The invention relates to a method of the continuous dehydration of sludge wherein, prior to dehydration, water is mechanically removed from the sludge and the thus obtained sludge of cutting consistency is mixed with heated spheres. According to the invention dehydration is carried out at reduced pressure, wherein the sludge from which water has...
patent 1998
document
Zhang, S. (author), Rem, P.C. (author), Forssberg, E. (author)
Owing to the growing emergence of the end-of-life electrical and electronic products with complex material structures and an ever-diminishing particle size of the valuable metals involved, development of eddy current separators (ECS) has been targeting selective separation of small non-ferrous metal particles smaller than 5 mm. Separability of...
journal article 1999
document
Rem, P.C. (author), Zhang, S. (author), Forssberg, E. (author), De Jong, T.P.R. (author)
Separability and separation mechanisms of small particles in modern rotating type eddycurrent separators (ECSs) were discussed in Part I. In order to address problems associated with this design concept, a number of novel ECSs, each with a unique design, have been developed. Part II reports on investigation into the separability and separation...
journal article 2000
document
Rem, P.C. (author), Zhang, S. (author)
The present invention relates to a method of separating non-ferro metal particles using a rotating magnetic field. According to the invention the particles are surrounded by a fluid restricting the fall-velocity significantly, suitably a fluid having a density of at least 0.1 kg/l. The presence of such a medium causes the particle, if it is a...
patent 2000
document
Rem, P.C. (author), Fraunholcz, N.O. (author), Dalmijn, W.L. (author)
Particles in a fluid medium are separated by feeding a mixture of particles into a separation chamber. The mixture of particles is treated by moving the medium up and down relative to the mixture of particles. A barrier is present above the mixture to restrain the particles. An Independent claim is also included for an apparatus for separating...
patent 2001
document
Rem, P.C. (author), Fraunholcz, N.O. (author), De Bruijn, A.J.M. (author)
The invention relates to a method of separating particles in a fluid medium, wherein the particles have a density lower than that of the fluid medium. According to the invention the particles are subjected to an up and down moving flow of the fluid medium, whereby a barrier is present above the particles restraining said particles. It appears...
patent 2001
document
Rem, P.C. (author), Fraunholcz, N.O. (author), Van Kooy, L.A. (author)
The invention relates to a method of separating a particle fraction from a particle stream making use of gravitational force and which is performed in a fluid. This provides particle fractions that are collected in respective collecting means. According to the invention the fluid and the collecting means are moved in relation to each other...
patent 2002
document
Van Kooy, L. (author), Mooij, M. (author), Rem, P. (author)
Separations by density, such as the separation of non-ferrous scrap into light and heavy alloys, are often realized by means of heavy media. In principle, kinetic gravity separations in water can be faster and cheaper, because they do not rely on suspensions or salt solutions of which the density must be tightly controlled. Test results of a...
journal article 2004
document
Settimo, F. (author), Bevilacqua, P. (author), Rem, P. (author)
Recovery of fine non-ferrous metals from waste streams is a notoriously difficult problem in eddy current separation technology. Existing processes either have a low capacity or an incomplete recovery for particle sizes below 5 mm. In a new process, the particles are fed slightly wet to make them stick to the surface of the conveyor belt. The...
journal article 2004
document
Rem, P.C. (author)
Separation of particle fraction from particle stream in a fluid e.g. aqueous liquid medium under gravitational force based on difference in vertical velocity involves passing the fluid and particle in horizontal direction defining relative direction of movement; collecting first particle fraction and second particle fraction in respective...
patent 2004
document
Rem, P.C. (author)
Recovery of non-ferrous metal particles from a stream to yield non-ferrous metal-enriched and metal depleted fractions involves putting the stream onto a conveyor belt (1) as a mono-layer such that with the help of water at least the non-ferrous metal particles get adhered to the belt; subjecting the moist mono-layer to magnetic field rotating...
patent 2004
document
Rem, P.C. (author), Van Kooy, L.A. (author)
The invention relates to a method of in a liquid separating a mixture of particles that within chosen limits have different physical property values, wherein the particles to be separated are supplied via a feeder to a screen upon which a layer of facilitating particles is disposed, the size of the facilitating particles being too large to fit...
patent 2004
document
Van der Weijden, R.D. (author), Rem, P.C. (author)
The invention relates to a method for the recovery of non-ferrous metal-comprising particles from a particle stream. According to the invention, the particle stream is put onto a conveyor belt in the form of a monolayer such that with the aid of a liquid, at least the non-ferrous metal comprising particles will adhere to the conveyor belt, and...
patent 2004
document
Rem, P.C. (author), Van Craaikamp, H. (author), Berkhout, S.P.M. (author), Sierhuis, W. (author), Van Kooy, L.A. (author)
A method for treating bottom ash from a waste incineration plant. The invention relates in particular to a method for treating bottom ash from a domestic waste incineration plant. In accordance with the invention bottom ash having a size ranging up to 2 mm is treated by removing a previously determined component. The treatment comprises at least...
patent 2007
document
Rem, P.C. (author), Berkhout, S.P.M. (author)
The invention relates to an apparatus and a method for separating a material stream consisting of several materials. The materials to be separated have different densities or density ranges, so that the material of the highest density can be discharged through a screen of the apparatus, while the material of the lowest density can be discharged...
patent 2007
document
Rem, P.C. (author), Berkhout, S.P.M. (author), Fraunholcz, O.N. (author)
The invention relates to a process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet, wherein a mixture of said liberated ferrous and not liberated ferrous fragments is fed onto a continuous conveyor belt which is driven around drums and wherein said...
patent 2008
document
Rem, P.C. (author), Berkhout, S.P.M. (author), De Koning, J.R.A. (author)
A method for separating seeds of different densities in a process stream, wherein the seeds are introduced into a magnetic process fluid for the formation of the process stream, which process stream is subjected to a magnetic field for the realization of a density stratification in the process stream, such that the individual seeds in the...
patent 2009
document
Berkhout, S.P.M. (author), Rem, P.C. (author)
The invention relates to a separation-apparatus (1) for separating from a particle-stream (4) at least a first fraction with particles (3) of a first group of dimensions, and a second fraction with particles (3) of a second group of dimensions, comprising an infeed-device (2) for the particle-stream (4), a rotatable drum (5) having at its...
patent 2009
Searched for:
(1 - 20 of 39)

Pages