Title of Invention	A HIGH-FREQUENCY SEPARATING DEVICE TO SEPARATE LIGHT COARSE PARTICLES FROM HEAVIER COARSE PARTICLE
Abstract	The present invention relates to a simple equipment provided with a hopper and a vibratory feeder. The vibratory feeder will have a facility to control the frequency of vibration in the range of 10-80 Hertz. It will also have an online facility to measure the operation frequency of the vibrator. Method A feed consisting of a mixture of coarser lights (size 6 mm to 10 mm, density 2.6) finer heavies size 1 mm to 4 mm density 4.4 coarser heavies (size 6 mm to 10 mm density 4.6) and fine lights of site 1 mm to 4 mm density 2.6 will be fed to the hopper and then the frequency of vibration will be tuned so that the applied frequency matches with the normal frequency of the coarser lights. This process will cause resonance of the coarser lights which then moves up while traveling along the chute of the vibrator, Figure 2A and 2B shows mixed status of the particles in the feeding end and segregated particles at the discharge end of the chute. A cutter placed at the discharge end of the chute finally divides the segregated layer into two products. Each of the products can be further beneficiated by passing it again over the high-frequency separator. Principle This process of separation is based on a well known concept which is known as Tune Mass Damper (TMD) concept. It defines natural frequency of each particle in a particulate assemblage as Where, k is spring constant and m is the mass of the particle. Spring constant for the coarser particles will be higher. Thus coarser lights and smaller heavies with same mass will have different natural frequency range. This is schematically explained in Figure 3. In case applied frequency matches with the natural frequency of coarse light; the fraction gets segregated at the top of the bed on vibration.

Title of Invention

A HIGH-FREQUENCY SEPARATING DEVICE TO SEPARATE LIGHT COARSE PARTICLES FROM HEAVIER COARSE PARTICLE

Abstract

The present invention relates to a simple equipment provided with a hopper and a vibratory feeder. The vibratory feeder will have a facility to control the frequency of vibration in the range of 10-80 Hertz. It will also have an online facility to measure the operation frequency of the vibrator. Method A feed consisting of a mixture of coarser lights (size 6 mm to 10 mm, density 2.6) finer heavies size 1 mm to 4 mm density 4.4 coarser heavies (size 6 mm to 10 mm density 4.6) and fine lights of site 1 mm to 4 mm density 2.6 will be fed to the hopper and then the frequency of vibration will be tuned so that the applied frequency matches with the normal frequency of the coarser lights. This process will cause resonance of the coarser lights which then moves up while traveling along the chute of the vibrator, Figure 2A and 2B shows mixed status of the particles in the feeding end and segregated particles at the discharge end of the chute. A cutter placed at the discharge end of the chute finally divides the segregated layer into two products. Each of the products can be further beneficiated by passing it again over the high-frequency separator. Principle This process of separation is based on a well known concept which is known as Tune Mass Damper (TMD) concept. It defines natural frequency of each particle in a particulate assemblage as Where, k is spring constant and m is the mass of the particle. Spring constant for the coarser particles will be higher. Thus coarser lights and smaller heavies with same mass will have different natural frequency range. This is schematically explained in Figure 3. In case applied frequency matches with the natural frequency of coarse light; the fraction gets segregated at the top of the bed on vibration.

Full Text	FIELD OF THE INVENTION: The present invention relates to a device for particles separation. More particularly, the present invention relates to a device of high -frequency particle separator operatable at 10-80 Hertz to separate light coarser from heavier fine particles and to separate fine heavier particles from a fine lighter particle. BACK GROUND OP THE INVENTION: In gravity separators, high density particles are separated form light density particles using specific gravity difference of the particles. This is an ideal technique when high-and low-density particles in the feed are of same size. However, in real particulate system a size range is always treated in place of mono-size particles. It is also well known that feed with narrow size range responds better in any gravity separators. Nonetheless due to many constraints, feed of a size range is always treated in any gravity separators. In a simplistic manner, a feed composition is traditionally described as a mixture of four different particle types 2 A. Coarse heavy (size 6 mm to 10 mm and density 4.4) B. Coarse light (size 6 mm to 10 mm and density 2.6) C. Fine heavy (size 1 mm to 4 mm and density 4.4) D. Fine light (size 1 mm to 4 mm and density 2.6) Separation of fine light form the rest is easy while the separation of coarse light form heavies is difficult and the reasons can be explained from the fundamental understanding of process dynamics in each case. In case of hydrocyclone operation, a part of coarse light reports to heavier fractions when overall high yield is targeted through better yield of fine heavy in the heavier fraction (concentrate). An example from iron ore beneficiation, -0.5 mm size particles are often treated on Stub Cyclone. The process can reduce the alumina content from a feed containing 4-5% alumina. However, it can seldom produce the concentrate of desired grade that is 2.0% or less alumina content. Chemical analysis would reveal that the cyclone concentrate contain coarser alumina rich (lighter) particles along with iron rich (heavy) particles. This is schematically explained through Figure 4 (a). Separation through high - frequency separator will be helpful in bringing down the alumina level to 2.0% or less form the present 3 cyclone concentrate having alumina level of 2.5%. In some other equipments, which uses liquid/solid fluidization techniques for separation (viz. Jig and Floatex), finer heavies reports to coarser lights. An example from jig rejects contains coarse lights (i.e. reject quality material) and small heavies (i.e. concentrate grade particles). This is schematically explained in Figure 4(b). This happens due to mixing of particles during the fluidization phase of jig cycle. Mixing is inevitable when we treat feed with wide size range (-10+0-5 mm) particles in jig. A high-frequency separator is ideal for recovering fine heavies form the jig reject and thus the overall yield of the process will improve. Therefore, separation of coarser lights from finer heavies is a challenge. The proposed equipment will find its use in separating coarser lights from fine heavies. OBJECTS OF THE INVENTION: It is therefore, an object of the present invention to propose of device of high frequency separator, which eliminates the disadvantages of Prior Art 4 Another object of the present invention is to propose a device high frequency separator, which helps in separation of coarser light particles form heavies. SUMMARY OF THE INVENTION: Equipment description The present invention relates to a simple equipment provided with a hopper and a vibratory feeder. The vibratory feeder will have a facility to control the frequency of vibration in the ranee of 10-80 Hertz. It will also have an online facility to measure the operation frequency of the vibrator. Method A feed consisting of a mixture of coarser lights (size 6 mm to 10 mm, density 2.6) finer heavies size 1 mm to 4 mm density 4.4 coarser heavies (size 6 mm to 10 mm density 4.6) and fine lights of site 1 mm to 4 mm density 2.6 will be fed to the hopper and then the frequency of vibration will be tuned so that the applied frequency matches with the normal frequency of the coarser lights. This process will cause 5 resonance of the coarser lights which then moves up while traveling along the chute of the vibrator, Figure 2A and 2B shows mixed status of the particles in the feeding end and segregated particles at the discharge end of the chute. A cutter placed at the discharge end of the chute finally divides the segregated layer into two products. Bach of the products can be further beneficiated by passing it again over the high-frequency separator. Principle This process of separation is based on a well known concept which is known as Tune Mass Damper (TMD) concept It defines natural frequency of each particle in a paniculate assemblage as Where, k is spring constant and m is the mass of the particle. Spring constant for the coarser particles will be higher. Thus coarser lights and smaller heavies with same mass will have different natural frequency range. This is schematically explained in Figure 3. In case 6 applied frequency matches with the natural frequency of coarse light; the fraction gets segregated at the top of the bed on vibration. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS: Fig - 1 Shows a schematic diagram of the High Frequency Vibrating Equipment as per Invention. Fig - 2A Shows a cross sectional view of particles distribution arrangement at the feed entry point Fig - 2B Shows a cross sectional view of particle distribution arrangement after vibrating separation. Fig - 3 Shows a schematic diagram of Natural frequency range for four different particle types. Fig - 4 (a) Shows STUB CYDONE underflow A mixture of coarse lights and heavy particles in Prior Art Fig - 4 (b) JIG Reject is a mixture of coarse light and heavy particles in Prior Art 7 DETAILS DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION: The present invention relates to a high frequency vibrating (10-80 Hertz) device comprising a hopper (1) at the top from which a mixture of non-uniform distributed particles are fed into it The hopper is supported by a plurality of stands (2) attached to main structure and have a discharge opening at the bottom (3) from where the charge particles consisting non-uniform distribution of particles (4,5,6) are fed into an chute entry point (7) and after vibration the particles comes out from a chute discharge point (11). The vibration of chute is employed by a vibrator means (8) which is electrically operated and is connected to a power point (9). The vibrator means (8) rests on a table supported by at least four stand (10). The input particles, of chute are consisted of a mixture of various sizes (1 mm to 4 mm and 6mm to 10 mm) and two densities particle as shown in Fig 2A and after processing through vibrated chute fine heavy (1 mm 4 mm, density 4.6) (6) and coarse heavy particles (5) (size 6 mm to 10 mm, density 4.6) are occupied in the bottom level and the coarse light (4) 8 particles (size 6 mm to 10 mm, density 2.6) are occupied at the top level as shown in figure 2B which can be easily separated by means of a cutter placed at the discharge end (11) of the chute. 9 WE CLAIM 1. A high-frequency (10-80 Hertz) separating device suitable to separate light coarse particles having a size of 6 mm to 10 mm and density 2.6 from heavier coarse particle having a size of 6 mm to 10 mm and density 4.4 and fine heavier particle having size of 2 mm to 4 mm and density 4.4 from a fine lighter particle, having a size of 2 mm to 4 mm, density 2.6, the device comprises:- - a hopper (1) at the top supported by a plurality of stand (2) attached to main structure and having a discharge opening (3) at the bottom of the hopper (1); - a chute disposed just beneath the hopper which is vibrated by a vibrating means (8) disposed beneath the chute and - a vibrator means (8) rests on a table supported by at least four stand (10). 10 2. A process of operating a high frequency separating device comprises?- - charging a non-uniform distribution of particle size into a hopper (1), - discharging the particle from discharge opening of hopper (1) into a chute entry point (7) - causing the chute to vibrate between (10-80 Hertz); - processing the non-uniformly distributed through the vibrated chute to form fine heavy and coarse heavy particles, the processed particles occupying the bottom level and the coarse light particles are occupied at top level of the chute and moves through chute discharge point (11) which can be separated by means of a cutter placed at the discharge end (11) of the chute. 3. The vibrating device as claimed in claim 1 wherein the hopper, chute table standard are made of welded structure of steel materials. 11 4. The device as claimed in claim 1 wherein the device is operatable in the frequency range 10-80 Hertz. 5. The device as claimed in claim 1 wherein the particle size of 6 mm to 10 mm having densities 2.6 are separated from others in vibration range 60 Hertz to 80 Hertz. 6. The device as claimed in claim 1 wherein the particle size of 6 mm to 10 mm having density 4.4. are separated from others in the vibration range 40 Hertz to 60 Hertz. 7. The device as claimed in claim 1, wherein the particle size of 2 mm to 4 mm having density 2.6 are separated from others in the vibration range 25 Hertz to 40 Hertz. 8. The device as claimed in claim 1, wherein the particle size of 2 mm to 4 mm having density 4.4 are separated from others in the vibration range 10 Hertz to 25 Hertz. 9. The high frequency vibrating separator device as substantially described and illustrated herein with reference to accompanying drawings. 9. 12 10. The process of operating high frequency separator device as substantially described and illustrated here in with reference to accompanying drawings. The present invention relates to a simple equipment provided with a hopper and a vibratory feeder. The vibratory feeder will have a facility to control the frequency of vibration in the range of 10-80 Hertz. It will also have an online facility to measure the operation frequency of the vibrator. Method A feed consisting of a mixture of coarser lights (size 6 mm to 10 mm, density 2.6) finer heavies size 1 mm to 4 mm density 4.4 coarser heavies (size 6 mm to 10 mm density 4.6) and fine lights of site 1 mm to 4 mm density 2.6 will be fed to the hopper and then the frequency of vibration will be tuned so that the applied frequency matches with the normal frequency of the coarser lights. This process will cause resonance of the coarser lights which then moves up while traveling along the chute of the vibrator, Figure 2A and 2B shows mixed status of the particles in the feeding end and segregated particles at the discharge end of the chute. A cutter placed at the discharge end of the chute finally divides the segregated layer into two products. Each of the products can be further beneficiated by passing it again over the high-frequency separator. Principle This process of separation is based on a well known concept which is known as Tune Mass Damper (TMD) concept. It defines natural frequency of each particle in a particulate assemblage as Where, k is spring constant and m is the mass of the particle. Spring constant for the coarser particles will be higher. Thus coarser lights and smaller heavies with same mass will have different natural frequency range. This is schematically explained in Figure 3. In case applied frequency matches with the natural frequency of coarse light; the fraction gets segregated at the top of the bed on vibration.

Full Text

FIELD OF THE INVENTION:
The present invention relates to a device for particles separation. More particularly, the present invention relates to a device of high -frequency particle separator operatable at 10-80 Hertz to separate light coarser from heavier fine particles and to separate fine heavier particles from a fine lighter particle.
BACK GROUND OP THE INVENTION:
In gravity separators, high density particles are separated form light density particles using specific gravity difference of the particles. This is an ideal technique when high-and low-density particles in the feed are of same size. However, in real particulate system a size range is always treated in place of mono-size particles. It is also well known that feed with narrow size range responds better in any gravity separators. Nonetheless due to many constraints, feed of a size range is always treated in any gravity separators.
In a simplistic manner, a feed composition is traditionally described as a mixture of four different particle types

2
A. Coarse heavy (size 6 mm to 10 mm and density 4.4)
B. Coarse light (size 6 mm to 10 mm and density 2.6)
C. Fine heavy (size 1 mm to 4 mm and density 4.4)
D. Fine light (size 1 mm to 4 mm and density 2.6)
Separation of fine light form the rest is easy while the separation of coarse light form heavies is difficult and the reasons can be explained from the fundamental understanding of process dynamics in each case. In case of hydrocyclone operation, a part of coarse light reports to heavier fractions when overall high yield is targeted through better yield of fine heavy in the heavier fraction (concentrate). An example from iron ore beneficiation, -0.5 mm size particles are often treated on Stub Cyclone. The process can reduce the alumina content from a feed containing 4-5% alumina. However, it can seldom produce the concentrate of desired grade that is 2.0% or less alumina content. Chemical analysis would reveal that the cyclone concentrate contain coarser alumina rich (lighter) particles along with iron rich (heavy) particles. This is schematically explained through Figure 4 (a). Separation through high - frequency separator will be helpful in bringing down the alumina level to 2.0% or less form the present

3
cyclone concentrate having alumina level of 2.5%. In some other equipments, which uses liquid/solid fluidization techniques for separation (viz. Jig and Floatex), finer heavies reports to coarser lights. An example from jig rejects contains coarse lights (i.e. reject quality material) and small heavies (i.e. concentrate grade particles). This is schematically explained in Figure 4(b). This happens due to mixing of particles during the fluidization phase of jig cycle. Mixing is inevitable when we treat feed with wide size range (-10+0-5 mm) particles in jig. A high-frequency separator is ideal for recovering fine heavies form the jig reject and thus the overall yield of the process will improve. Therefore, separation of coarser lights from finer heavies is a challenge. The proposed equipment will find its use in separating coarser lights from fine heavies.
OBJECTS OF THE INVENTION:
It is therefore, an object of the present invention to propose of device of high frequency separator, which eliminates the disadvantages of Prior Art

4
Another object of the present invention is to propose a device high frequency separator, which helps in separation of coarser light particles form heavies.
SUMMARY OF THE INVENTION: Equipment description
The present invention relates to a simple equipment provided with a hopper and a vibratory feeder. The vibratory feeder will have a facility to control the frequency of vibration in the ranee of 10-80 Hertz. It will also have an online facility to measure the operation frequency of the vibrator.
Method
A feed consisting of a mixture of coarser lights (size 6 mm to 10 mm, density 2.6) finer heavies size 1 mm to 4 mm density 4.4 coarser heavies (size 6 mm to 10 mm density 4.6) and fine lights of site 1 mm to 4 mm density 2.6 will be fed to the hopper and then the frequency of vibration will be tuned so that the applied frequency matches with the normal frequency of the coarser lights. This process will cause

5
resonance of the coarser lights which then moves up while traveling along the chute of the vibrator, Figure 2A and 2B shows mixed status of the particles in the feeding end and segregated particles at the discharge end of the chute. A cutter placed at the discharge end of the chute finally divides the segregated layer into two products. Bach of the products can be further beneficiated by passing it again over the high-frequency separator.
Principle
This process of separation is based on a well known concept which is known as Tune Mass Damper (TMD) concept It defines natural frequency of each particle in a paniculate assemblage as

Where, k is spring constant and m is the mass of the particle. Spring constant for the coarser particles will be higher. Thus coarser lights and smaller heavies with same mass will have different natural frequency range. This is schematically explained in Figure 3. In case

6
applied frequency matches with the natural frequency of coarse light; the fraction gets segregated at the top of the bed on vibration.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS:
Fig - 1 Shows a schematic diagram of the High Frequency Vibrating
Equipment as per Invention. Fig - 2A Shows a cross sectional view of particles distribution
arrangement at the feed entry point Fig - 2B Shows a cross sectional view of particle distribution
arrangement after vibrating separation. Fig - 3 Shows a schematic diagram of Natural frequency range for
four different particle types. Fig - 4 (a) Shows STUB CYDONE underflow A mixture of coarse
lights and heavy particles in Prior Art Fig - 4 (b) JIG Reject is a mixture of coarse light and heavy particles
in Prior Art

7
DETAILS DESCRIPTION OF A PREFERRED EMBODIMENT
OF THE INVENTION:
The present invention relates to a high frequency vibrating (10-80 Hertz) device comprising a hopper (1) at the top from which a mixture of non-uniform distributed particles are fed into it The hopper is supported by a plurality of stands (2) attached to main structure and have a discharge opening at the bottom (3) from where the charge particles consisting non-uniform distribution of particles (4,5,6) are fed into an chute entry point (7) and after vibration the particles comes out from a chute discharge point (11). The vibration of chute is employed by a vibrator means (8) which is electrically operated and is connected to a power point (9). The vibrator means (8) rests on a table supported by at least four stand (10). The input particles, of chute are consisted of a mixture of various sizes (1 mm to 4 mm and 6mm to 10 mm) and two densities particle as shown in Fig 2A and after processing through vibrated chute fine heavy (1 mm 4 mm, density 4.6) (6) and coarse heavy particles (5) (size 6 mm to 10 mm, density 4.6) are occupied in the bottom level and the coarse light (4)

8
particles (size 6 mm to 10 mm, density 2.6) are occupied at the top level as shown in figure 2B which can be easily separated by means of a cutter placed at the discharge end (11) of the chute.

9 WE CLAIM
1. A high-frequency (10-80 Hertz) separating device suitable to separate light coarse particles having a size of 6 mm to 10 mm and density 2.6 from heavier coarse particle having a size of 6 mm to 10 mm and density 4.4 and fine heavier particle having size of 2 mm to 4 mm and density 4.4 from a fine lighter particle, having a size of 2 mm to 4 mm, density 2.6, the device comprises:-
- a hopper (1) at the top supported by a plurality of stand (2)
attached to main structure and having a discharge opening
(3) at the bottom of the hopper (1);
- a chute disposed just beneath the hopper which is vibrated
by a vibrating means (8) disposed beneath the chute and
- a vibrator means (8) rests on a table supported by at least four stand (10).

10
2. A process of operating a high frequency separating device
comprises?-
- charging a non-uniform distribution of particle size into a
hopper (1),
- discharging the particle from discharge opening of hopper
(1) into a chute entry point (7)
- causing the chute to vibrate between (10-80 Hertz);
- processing the non-uniformly distributed through the
vibrated chute to form fine heavy and coarse heavy
particles, the processed particles occupying the bottom
level and the coarse light particles are occupied at top level
of the chute and moves through chute discharge point (11)
which can be separated by means of a cutter placed at the
discharge end (11) of the chute.
3. The vibrating device as claimed in claim 1 wherein the hopper,
chute table standard are made of welded structure of steel
materials.

11
4. The device as claimed in claim 1 wherein the device is
operatable in the frequency range 10-80 Hertz.
5. The device as claimed in claim 1 wherein the particle size of 6
mm to 10 mm having densities 2.6 are separated from others in
vibration range 60 Hertz to 80 Hertz.
6. The device as claimed in claim 1 wherein the particle size of 6
mm to 10 mm having density 4.4. are separated from others in
the vibration range 40 Hertz to 60 Hertz.
7. The device as claimed in claim 1, wherein the particle size of 2
mm to 4 mm having density 2.6 are separated from others in the
vibration range 25 Hertz to 40 Hertz.
8. The device as claimed in claim 1, wherein the particle size of 2
mm to 4 mm having density 4.4 are separated from others in the
vibration range 10 Hertz to 25 Hertz.
9. The high frequency vibrating separator device as substantially
described and illustrated herein with reference to accompanying
drawings.
9.
12
10. The process of operating high frequency separator device as substantially described and illustrated here in with reference to accompanying drawings.

The present invention relates to a simple equipment provided with a hopper and a vibratory feeder. The vibratory feeder will have a facility to control the frequency of vibration in the range of 10-80 Hertz. It will also have an online facility to measure the operation frequency of the vibrator.
Method
A feed consisting of a mixture of coarser lights (size 6 mm to 10 mm, density 2.6) finer heavies size 1 mm to 4 mm density 4.4 coarser heavies (size 6 mm to 10 mm density 4.6) and fine lights of site 1 mm to 4 mm density 2.6 will be fed to the hopper and then the frequency of vibration will be tuned so that the applied frequency matches with the normal frequency of the coarser lights. This process will cause resonance of the coarser lights which then moves up while traveling along the chute of the vibrator, Figure 2A and 2B shows mixed status of the particles in the feeding end and segregated particles at the discharge end of the chute. A cutter placed at the discharge end of the chute finally divides the segregated layer into two products. Each of the products can be further beneficiated by passing it again over the high-frequency separator.
Principle
This process of separation is based on a well known concept which is known as Tune Mass Damper (TMD) concept. It defines natural frequency of each particle in a particulate assemblage as
Where, k is spring constant and m is the mass of the particle. Spring constant for the coarser particles will be higher. Thus coarser lights and smaller heavies with same mass will have different natural frequency range. This is schematically explained in Figure 3. In case
applied frequency matches with the natural frequency of coarse light; the fraction gets segregated at the top of the bed on vibration.

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Patent Number

277246

Indian Patent Application Number

306/KOL/2007

PG Journal Number

48/2016

Publication Date

18-Nov-2016

Grant Date

16-Nov-2016

Date of Filing

01-Mar-2007

Name of Patentee

TATA STEEL LIMITED,

Applicant Address

JAMSHEDPUR,831001, INDIA AN INDIAN COMPANY

Inventors:

#	Inventor's Name	Inventor's Address
1	MR. ASIM KUMAR MUKHERJEE	R&D DIVISION TATA STEEL LIMITED, JAMSHEDPUR 831001 INDIA, AN INDIAN COMPANY

PCT International Classification Number

B03C1/23; B03C1/02

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA