Magnetic matrices and methods of using the same
OwnerCláudio Henrique Teixeira Ribeiro, José Pancrácio Ribeiroinventors
Life of this patent
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Abstract
A magnetic matrix for magnetic separation of particles in a material feed includes a plurality of grooved plates having first and second sides that both have an alternating series of teeth and grooves therealong, each grooved plate having an offset alignment in which teeth and grooves on a first side of a plate are laterally offset from teeth and grooves on a second side of the same plate. Also provided are methods of using magnetic matrices to separate magnetic ores, with the methods characterized by a negative correlation in which magnetic matrices constructed with grooved plates having larger pitches are used for the separation of ultrafine particles.
Claims27
A method of magnetically separating particles, comprising:
- passing a material feed through a magnetic matrix;
- wherein
- the magnetic matrix comprises a plurality of plates, comprising inner plates and outer plates, with at least the inner plates being formed as grooved plates having first and second sides that both have an alternating series of teeth and grooves therealong, the inner plates having a pitch of approximately 6.35 mm, with adjacent inner plates separated from one another by a gap, the gap having a width in a predetermined range such that the magnetic matrix has a pitch-to-gap ratio in a range of 3:1 to 20:1, and
- the material feed comprises magnetic and non-magnetic ultrafine particles.
A method of magnetically separating particles, comprising:
- passing a material feed through a magnetic matrix;
- wherein
- the magnetic matrix comprises a plurality of plates, comprising inner plates and outer plates, with at least the inner plates being formed as grooved plates having first and second sides that both have an alternating series of teeth and grooves therealong, the inner plates having a pitch of approximately 3.175 mm or greater, with adjacent inner plates of the magnetic matrix separated from one another by a gap, the gap having a width in a range from about 0.3175 mm to about 2.116 mm, and
- the material feed comprises magnetic and non-magnetic ultrafine particles.
A method of magnetically separating particles, comprising:
- passing a material feed through a magnetic matrix;
- wherein
- the magnetic matrix comprises a plurality of plates, comprising inner plates and outer plates, with at least the inner plates being formed as grooved plates having first and second sides that both have an alternating series of teeth and grooves therealong, with adjacent inner plates of the magnetic matrix separated from one another by a gap, the gap having a width in a range from about 0.3175 mm to about 2.116 mm, and the inner plates having a pitch such that the magnetic matrix has a pitch-to-gap ratio in a range of 3:1 to 20:1, and
- the material feed comprises magnetic and non-magnetic ultrafine particles.
Dependencies are inferred from the claim text.