CN1623670A - Process for extracting material from mineral waste material by high-intensity magnetic field gradient - Google Patents
Process for extracting material from mineral waste material by high-intensity magnetic field gradient Download PDFInfo
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- CN1623670A CN1623670A CN 200310109101 CN200310109101A CN1623670A CN 1623670 A CN1623670 A CN 1623670A CN 200310109101 CN200310109101 CN 200310109101 CN 200310109101 A CN200310109101 A CN 200310109101A CN 1623670 A CN1623670 A CN 1623670A
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Abstract
A process for extracting useful material from the rejected ore powder by high-intensity gradient magentic field includes such steps as creating a strong magnetic field (at least 6X10 to the power 5 A/m), arranging a secondary magnetic pole unit in said magnetic field, making the rejected ore powder flow through said magnetic field, and recovering said useful material from the secondary magnetic pole unit.
Description
Technical field
The present invention relates to a kind of method of extracting material, specifically a kind of method that adopts high strong magnetic field gradient from mineral waste, to extract material.
Background technology
In industry is selected materials in the mine, the downfield gradient technique has used for many years, be mainly used to screen the stronger mineral of magnetic, and to from mineral waste, extract effective material, still use the words of the method, exist the limitation of two aspects: at first, in the mineral waste, many utilities small-sized, the magnetic that has is very weak, also has many utilities small-sized and magnetic is very weak, and the one, the extraction dynamics is not enough, the 2nd, extraction rate and handling capacity are limited, have seriously restricted the possibility of large-scale production; Secondly, when containing the impurity that is magnetic close in the mineral waste, because the method selectivity is not good, will cause useful extract quality variation, consequently impurity content increases, and influences follow-up refining process, has limited the validity and the value of product.
Summary of the invention
A kind of method that adopts high strong magnetic field gradient to extract material from mineral waste of providing at the deficiencies in the prior art is provided, it can separate a kind of from mineral waste or a class material, even the small size material that magnetic is very weak, also can be effectively selected, and can be applied to large-scale production, the high speed processing material has very strong practicality and considerable economy.
The concrete technical scheme that realizes the object of the invention is:
A kind of method that adopts high strong magnetic field gradient to extract material from mineral waste is characterized in that it comprises the steps:
A, a high magnetic field area is set;
B, secondary set of poles is set in this high magnetic field area;
C, material pass through in secondary set of poles and high magnetic field area;
D, on the secondary set of poles recovered material.
Being provided with of described high magnetic field area can be adopted electromagnetic material, rare earth permanent-magnetic material or superconductor.
The magnetic field intensity of described high magnetic field area is at least 6 * 10
5More than the A/m.
The magnetic pole of described secondary set of poles should magnetize, and its material, shape and size are by the technical parameter decision of extracting material.
Described material is by secondary set of poles and high magnetic field area with fluid form.
The present invention can extract weak magnetic substance or the minimum material of particle size effectively, it has excellent selectivity, and is can be from mineral waste effectively selected and extract desired substance, and extraction rate is fast, handling capacity is strong, makes efficient, reliable, good in economic efficiency large-scale application become possibility.
Description of drawings
Accompanying drawing is the embodiment of the invention 1 schematic flow sheet
The specific embodiment
The present invention can be undertaken by dual mode: one, the product of acquisition are exactly required extract; Another is removed unwanted material from mineral waste, improve the concentration of required extractive matter in the left material.
A high magnetic field area at first is set, adopts the array of permanent magnet usually; For large-scale application, use electromagnetism to produce magnetic field, then more economical and practical; Superconducting magnet can produce high-intensity magnetic field with very low operating cost; Improved superconducting magnet can also utilize magnetic flux to freeze (gathering) principle such as superconducting disk, superconduction cylinder or superconduction pipe etc.
Secondary set of poles is set in high magnetic field area, and the material of this device, shape and size are by the technical parameter decision of extracting material, and the magnetic pole of this device must magnetize, and for secondary magnetic pole is magnetized, high magnetic field area internal magnetic field intensity should be 6 * 10 usually
5More than the A/m (being equivalent to magnetic flux density is 0.75 tesla).
Mineral waste is during by high-intensity magnetic field district and secondary set of poles, and material is separated selectively, and is adsorbed on the surface of secondary magnetic pole, and remainder arrives the treatment system outlet then insusceptibly by secondary set of poles.If above-mentioned first kind of mode, at this moment being adsorbed on secondary magnetic pole surface mass is exactly required extract; If the second way, at this moment being adsorbed on secondary magnetic pole surface mass is exactly impurity, and insusceptibly by secondary set of poles, the material that arrives the treatment system outlet is exactly required extraction material.
The present invention is in the process of implementing, and the material of secondary set of poles, shape and size are by the technical parameter decision of extracting material, and different materials is provided with the magnetic field intensity difference.The material of secondary set of poles, size, shape difference determine the difference of required magnetic field gradient, and that these differences play a part the precision of final extraction material is basic.
Embodiment 1
To extract ilmenite concentrate from the iron ore waste material is example:
A high magnetic field area at first is set, produces 4 * 10 in the zone
6The magnetic field intensity of A/m (closing 5 teslas), secondary set of poles is set in the zone, this device is made of the ferromagnetism stainless steel, take the form of metal wire rod array, metal wire rod is made by woven wire or metal wool, and the diameter of metal wire rod is chosen according to the particle size of ilmenite composition in the mineral waste, and the best pile factor of secondary magnetic pole array is below 15%, the device of this spline structure can produce the magnetic field gradient of 100,000 teslas/rice order of magnitude.
In this class iron ore waste material, contain ilmenite concentrate and the various silicate material that contains magnetic iron ore usually.Ilmenite concentrate is a kind of normal magnetisable material, and in some cases, it is weak ferromagnetism is because comprised the magnetic iron ore material in the structure of its ore; In the iron ore waste material, the silicates material that contains magnetic iron ore as a part, usually have ferromagnetism, yet when the magnetic field intensity height arrived to a certain degree, the ilmenite concentrate that contains magnetic iron ore was different with the silicates material that contains magnetic iron ore magnetic response in secondary set of poles.
Consult accompanying drawing 1, secondary set of poles 2 is set in the magnetic pole 1, the iron ore waste material of powdery is blended in the water, material is delivered to and by secondary set of poles 2 by conveyance conduit 3, material is in by secondary set of poles 2, ilmenite concentrate is adsorbed on the surface of secondary set of poles 2 selectively, and other material and contain the silicates material of magnetic iron ore can be impregnable the outlet of arrival treatment system.When filling ilmenite concentrate on the secondary set of poles 2,, reclaim ilmenite concentrate by falling magnetic or demagnetize mode.Falling magnetic or demagnetize mode can adopt direct reduction magnetic field intensity or secondary set of poles is shifted out magnetic field etc.
Typically contain 15～30% ilmenite concentrate in this class iron ore waste material, the silicates material that contains magnetic iron ore 5% is arranged in all the other materials, use downfield technology is extracted the ilmenite concentrate in the iron ore waste material, the purity that generally extracts ilmenite concentrate can only reach 30～60%, its reason is that the silicate material that contains magnetic iron ore also has relative strong reaction to general downfield, the downfield technology can not be distinguished selectively and contain ferromagnetic ore deposit silicate material and smart titanium ore, therefore the smart titanium ore purity of selecting is not high, and this has just restricted this technology is extracted ilmenite concentrate in the iron ore waste material sizable application.Adopt the present invention, the purity of extracting ilmenite concentrate from similar iron ore waste material can reach 95%, and fraction impurity generally is the extremely trickle material that adheres to the ilmenite concentrate surface.Adopt the present invention can make ilmenite concentrate extraction rate reached 99% in the iron ore waste material simultaneously, efficient, reliable, the good in economic efficiency large-scale application of ilmenite concentrate of extracting from the iron ore waste material that makes like this becomes possibility.
To extract impurity the ilmenite concentrate that extracts from embodiment 1 is example:
A high magnetic field area is set, produces 1.2 * 10 in the zone
6The magnetic field intensity of A/m (closing 1.5 teslas), secondary set of poles is set in the zone, this device is made of the ferromagnetism stainless steel, take the form of metal wire rod array, metal wire rod is made by woven wire or metal wool, and the diameter of metal wire rod is chosen according to the particle size of impurity in the ilmenite concentrate, and the best pile factor of secondary magnetic pole array is below 15%, the device of this spline structure can produce the magnetic field gradient of 100,000 teslas/rice order of magnitude.
The ilmenite concentrate that extracts is blended in the water, material is delivered to and by secondary set of poles by conveyance conduit, material is in by secondary set of poles, the impurity that contains tiny magnetic iron ore material in the ilmenite concentrate is adsorbed on the surface of secondary set of poles selectively, and ilmenite concentrate can impregnable arrival treatment system outlet.When filling the impurity that contains the magnetic iron ore material on the secondary set of poles,, collect the impurity that contains the magnetic iron ore material by falling magnetic or demagnetize mode.Falling magnetic or demagnetize mode can adopt direct reduction magnetic field intensity or secondary set of poles is shifted out magnetic field etc.
Claims (5)
1, a kind of method that adopts high strong magnetic field gradient to extract material from mineral waste is characterized in that it comprises the steps:
A, a high magnetic field area is set;
B, secondary set of poles is set in this high magnetic field area;
C, material pass through in secondary set of poles and high magnetic field area;
D, on the secondary set of poles recovered material.
2, method according to claim 1 is characterized in that being provided with of high magnetic field area can adopt electromagnetic material, rare earth permanent-magnetic material or superconductor.
3, method according to claim 1, the magnetic field intensity that it is characterized in that high magnetic field area is at least 6 * 10
5More than the A/m.
4, method according to claim 1 is characterized in that the magnetic pole of secondary set of poles should magnetize, and its material, shape and size are by the technical parameter decision of extracting material.
5, method according to claim 1 is characterized in that described material is by secondary set of poles and high magnetic field area with fluid form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109101 CN1623670A (en) | 2003-12-05 | 2003-12-05 | Process for extracting material from mineral waste material by high-intensity magnetic field gradient |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109101 CN1623670A (en) | 2003-12-05 | 2003-12-05 | Process for extracting material from mineral waste material by high-intensity magnetic field gradient |
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| CN1623670A true CN1623670A (en) | 2005-06-08 |
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| CN 200310109101 Pending CN1623670A (en) | 2003-12-05 | 2003-12-05 | Process for extracting material from mineral waste material by high-intensity magnetic field gradient |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101703964B (en) * | 2009-10-20 | 2012-07-04 | 江西永丰县博源实业有限公司 | Superconducting magnetic separator |
| CN104619392A (en) * | 2012-12-17 | 2015-05-13 | 有限会社商南工程 | Magnetic in-line filter |
| CN109277195A (en) * | 2018-11-21 | 2019-01-29 | 江西洪都航空工业集团有限责任公司 | Filter |
-
2003
- 2003-12-05 CN CN 200310109101 patent/CN1623670A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101703964B (en) * | 2009-10-20 | 2012-07-04 | 江西永丰县博源实业有限公司 | Superconducting magnetic separator |
| CN104619392A (en) * | 2012-12-17 | 2015-05-13 | 有限会社商南工程 | Magnetic in-line filter |
| US9475062B2 (en) | 2012-12-17 | 2016-10-25 | Shounan Engineering Inc. | Magnetic inline filter |
| CN109277195A (en) * | 2018-11-21 | 2019-01-29 | 江西洪都航空工业集团有限责任公司 | Filter |
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