CA1077441A - Method for enhancing artificially magnetic separation of minerals by the use of preconditioning reagents - Google Patents
Method for enhancing artificially magnetic separation of minerals by the use of preconditioning reagentsInfo
- Publication number
- CA1077441A CA1077441A CA280,169A CA280169A CA1077441A CA 1077441 A CA1077441 A CA 1077441A CA 280169 A CA280169 A CA 280169A CA 1077441 A CA1077441 A CA 1077441A
- Authority
- CA
- Canada
- Prior art keywords
- ore
- magnesite
- conditioning
- diamine
- serpentine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention provides a method for the benefication of ores and minerals which comprises crushing the ores to a particulate size, conditioning the surface of ore or mineral to be separated by treatment with a reagent so as to selectively absorb on said surface a finely ground material with strong ferro-magnetic or paramagnetic properties, treating the conditioned ore or mineral with said finely ground material to effect said selective absorption and separating the ore or mineral which has absorbed said material by magnetic separation.
The present invention provides a method for the benefication of ores and minerals which comprises crushing the ores to a particulate size, conditioning the surface of ore or mineral to be separated by treatment with a reagent so as to selectively absorb on said surface a finely ground material with strong ferro-magnetic or paramagnetic properties, treating the conditioned ore or mineral with said finely ground material to effect said selective absorption and separating the ore or mineral which has absorbed said material by magnetic separation.
Description
The present invention relates to the separation of a mineral from the gangue, or of the gangue from a mineral, by selectively artificially increasing the magnetic properties of the mineral or the gangue whereby magnetic separation of two diamagnetic or slightly paramagnetic ores or minerals can be accomplished by using magnetic separators of low or medium strength.
According to the present invention therefore there is provided in a beneficiation process for the recovery of pure ' 10 magnesite from magnesite ores containing magnesite, serpentine and other gangue material which includes the crushing of a quantity of magnesite ore, conditioning the crushed ore to activate the surface of the serpentine and other gangue material, further conditioning the crushed ore in a suspension of a finely divided strongly ferromagnetic material so as to coat selective the surface of the serpentine and the other gangue material as well as the strongly siliceous and carbonaceous particles of the ore, and removing the serpentine and the other gangue material as well as the strongly siliceous and carbonaceous particles of the ore from the remainder of the ore by means of a magnetic separator to obtain a concentrate of magnesite the improvement wherein said conditioning of the crushed ore to activate the surface of the serpentine and other gangue material is accomplished by placing the crushed ore in an aqueous mixture containing by weight 2% to 6% of diesel oil, 0.05 to 0.4~ of pine oil and 0.05 to 0.4% of a diamine.
Thus, in accordance with the present invention, the increase of the magnetic properties of the ore or mineral to be separated is achieved by selective absorption on its surface of a finely divided highly magnetic substance, such as magnetic or ferrosilicon and the so formed combination has increased magnetic properties. This selective absorption is achieved by conditioning the surface of the material to be magnetically separated, by the appropriate reagents in water. The ore is suitably conditioned in an aqueous suspension of finely divided, strongly magnetic material, such asmagnetic or ferrosilicon.
This strongly magnetic material is selectively absorbed on the surface of the ore and increases its magnetic properties.
After the magnetic separation, the recovery of the finely ground magnetic material from the surface ~f theore may be achieved with water under pressure or by using detergentsor by stirring ., .
- la -" ~0774~1 strongly in a second magnetic field.
In a particular embodiment of the method of the present invention, the ore or mineral is crushed into small pieces, for example less than 6 mm., is thoroughly washed and the pieces smaller than 0.5 mm are removed. It will however be realized that the crushed ore may contain pieces larger than 6 mm and smaller than 0.5 mm. The 0.5 mm - 6 mm.
material is fed into a conditioning tank with the appropriate reagents where the conditioning is done under agitation. After the conditioning, the conditioning liquid is separated. After draining the liquid, the material is fed into another conditioner with a finely divided suspension of magnetic or ferrosilicon, and is well agitated until completely covered. After the conditioning, during which the selective absorption of the magnetic material on the surface of the particles to be magnetic-ally removed has taken place, the mineral is drained, lightly washed in order to remove magnetite or ferrosilicon from the grains that have not absorbed these materials, and is then fed ~ in wet magnetic separators where the separation takes place.
20 The non-magnetic material is washed and according to its purity constitutes the intermediate or final product. The magnetic product is thoroughly washed with water under pressure or by using a detergent or by stirring in a magnetic field, so that the absorbed film of the highly magnetic material be removed.
The recovery of the finely ground magnetic material is achieved by conventional methods, such as thickening, washing, magnetic separationanddemagnetizing coils.
In one embodiment of the present invention in the i method, the ore or mineral is firstly subjected to a mechanical preconcentration step. Suitably the concentration obtained is subjected to anotherbenefication method to improve its quality.
In another embodiment of the present invention, the : - ~077441 . .
method is repeated at least twice to the ore or mineral to improve its quality.
The present invention will be further illustrated by way of the following Example.
EXAMPLE -- -A magnesite ore containing serpentine slightly magnetic - and non-magnetic, feldspars and silica is subjected to the above treatment. The conditioning was effected in an aqueous mixture of 1) 0.15~ DUOMEET T* or GENAMIN TAP 100**
According to the present invention therefore there is provided in a beneficiation process for the recovery of pure ' 10 magnesite from magnesite ores containing magnesite, serpentine and other gangue material which includes the crushing of a quantity of magnesite ore, conditioning the crushed ore to activate the surface of the serpentine and other gangue material, further conditioning the crushed ore in a suspension of a finely divided strongly ferromagnetic material so as to coat selective the surface of the serpentine and the other gangue material as well as the strongly siliceous and carbonaceous particles of the ore, and removing the serpentine and the other gangue material as well as the strongly siliceous and carbonaceous particles of the ore from the remainder of the ore by means of a magnetic separator to obtain a concentrate of magnesite the improvement wherein said conditioning of the crushed ore to activate the surface of the serpentine and other gangue material is accomplished by placing the crushed ore in an aqueous mixture containing by weight 2% to 6% of diesel oil, 0.05 to 0.4~ of pine oil and 0.05 to 0.4% of a diamine.
Thus, in accordance with the present invention, the increase of the magnetic properties of the ore or mineral to be separated is achieved by selective absorption on its surface of a finely divided highly magnetic substance, such as magnetic or ferrosilicon and the so formed combination has increased magnetic properties. This selective absorption is achieved by conditioning the surface of the material to be magnetically separated, by the appropriate reagents in water. The ore is suitably conditioned in an aqueous suspension of finely divided, strongly magnetic material, such asmagnetic or ferrosilicon.
This strongly magnetic material is selectively absorbed on the surface of the ore and increases its magnetic properties.
After the magnetic separation, the recovery of the finely ground magnetic material from the surface ~f theore may be achieved with water under pressure or by using detergentsor by stirring ., .
- la -" ~0774~1 strongly in a second magnetic field.
In a particular embodiment of the method of the present invention, the ore or mineral is crushed into small pieces, for example less than 6 mm., is thoroughly washed and the pieces smaller than 0.5 mm are removed. It will however be realized that the crushed ore may contain pieces larger than 6 mm and smaller than 0.5 mm. The 0.5 mm - 6 mm.
material is fed into a conditioning tank with the appropriate reagents where the conditioning is done under agitation. After the conditioning, the conditioning liquid is separated. After draining the liquid, the material is fed into another conditioner with a finely divided suspension of magnetic or ferrosilicon, and is well agitated until completely covered. After the conditioning, during which the selective absorption of the magnetic material on the surface of the particles to be magnetic-ally removed has taken place, the mineral is drained, lightly washed in order to remove magnetite or ferrosilicon from the grains that have not absorbed these materials, and is then fed ~ in wet magnetic separators where the separation takes place.
20 The non-magnetic material is washed and according to its purity constitutes the intermediate or final product. The magnetic product is thoroughly washed with water under pressure or by using a detergent or by stirring in a magnetic field, so that the absorbed film of the highly magnetic material be removed.
The recovery of the finely ground magnetic material is achieved by conventional methods, such as thickening, washing, magnetic separationanddemagnetizing coils.
In one embodiment of the present invention in the i method, the ore or mineral is firstly subjected to a mechanical preconcentration step. Suitably the concentration obtained is subjected to anotherbenefication method to improve its quality.
In another embodiment of the present invention, the : - ~077441 . .
method is repeated at least twice to the ore or mineral to improve its quality.
The present invention will be further illustrated by way of the following Example.
EXAMPLE -- -A magnesite ore containing serpentine slightly magnetic - and non-magnetic, feldspars and silica is subjected to the above treatment. The conditioning was effected in an aqueous mixture of 1) 0.15~ DUOMEET T* or GENAMIN TAP 100**
2) 0.18% FLOTOL B***
3) 4% DIESEL OIL
* DUOMEEN T is a trademark for an approximately 85~ pure diamine of the general type RNH C3 H6 NH2 where R is an alkyl group of - 8 to 18 carbon atoms with 99% chemical actives and is a tallow derivative of fatty alkyl propyl diamine where the alkyl may vary between C14 - C18 and is primarily C14, C16 and C18.
** GENAMIN TAP 100 is also a trademark for a diamine of the type RNHCH2CH2NE2 (Tallow fatty alkyl propylene diamine where the alkyl may vary between C12 - C18 and is primarily C12, C14, C16, C17 and C18.
*** FLOTOL B is a trademark for a product which comprises pine oil which contains particularly large quantities of terpene alcohol.
The consumption of reagents, per ton of feed ore, ranges between: 300 - 380 gr. DUOMEEN T or GENAMIN TAP 100 300 - 380 gr. FLOTOL B
7.7 - 8.7 lt. DIESEL OIL.
The recovery of concentrated ore depends on the initial concentration of magnesite in the ore. The concentrate obtained has a chemical analysis of 6% - 0.5% SiO2 depending on the initial concentration and on the form of the ore. There is also a sub-stantial reduction of CaO.
C ~
-. 10774~1 The method of the present invention has the following advantages:
1. The reagents for the activation of the surface are required in very small quantities, making the conditioning pro-cess inexpensive;
' ' ~ - 3a -:
`` 10774~1 2. The method requires relatively coarse material, provided that liberation can be accomplished at that size.
Expensive grinding usually required for flotation is thus ` avoided;
3. For the magnetic separation simple high output equipments such as wet magnetic separators may be used; and
* DUOMEEN T is a trademark for an approximately 85~ pure diamine of the general type RNH C3 H6 NH2 where R is an alkyl group of - 8 to 18 carbon atoms with 99% chemical actives and is a tallow derivative of fatty alkyl propyl diamine where the alkyl may vary between C14 - C18 and is primarily C14, C16 and C18.
** GENAMIN TAP 100 is also a trademark for a diamine of the type RNHCH2CH2NE2 (Tallow fatty alkyl propylene diamine where the alkyl may vary between C12 - C18 and is primarily C12, C14, C16, C17 and C18.
*** FLOTOL B is a trademark for a product which comprises pine oil which contains particularly large quantities of terpene alcohol.
The consumption of reagents, per ton of feed ore, ranges between: 300 - 380 gr. DUOMEEN T or GENAMIN TAP 100 300 - 380 gr. FLOTOL B
7.7 - 8.7 lt. DIESEL OIL.
The recovery of concentrated ore depends on the initial concentration of magnesite in the ore. The concentrate obtained has a chemical analysis of 6% - 0.5% SiO2 depending on the initial concentration and on the form of the ore. There is also a sub-stantial reduction of CaO.
C ~
-. 10774~1 The method of the present invention has the following advantages:
1. The reagents for the activation of the surface are required in very small quantities, making the conditioning pro-cess inexpensive;
' ' ~ - 3a -:
`` 10774~1 2. The method requires relatively coarse material, provided that liberation can be accomplished at that size.
Expensive grinding usually required for flotation is thus ` avoided;
3. For the magnetic separation simple high output equipments such as wet magnetic separators may be used; and
4. Almost complete recovery of the magnetic medium used may be accomplished.
: - .
~10 ' ' :
.
_ ~ _
: - .
~10 ' ' :
.
_ ~ _
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a beneficiation process for the recovery of pure magnesite from magnesite ores containing magnesite, serpentine and other gangue material which includes the crushing of a quan-tity of magnesite ore, conditioning the crushed ore to activate the surface of the serpentine and other gangue material, further conditioning the crushed ore in a suspension of a finely divided strongly ferromagnetic material so as to coat selectively the surface of the serpentine and the other gangue material as well as the strongly siliceous and carbonaceous particles of the ore, and removing the serpentine and the other gangue material as well as the strongly siliceous and carbonaceous particles of the ore from the remainder of the ore by means of a magnetic separator to obtain a concentrate of magnesite the improvement wherein said conditioning of the crushed ore to active the surface of the ser-pentine and other gangue material is accomplished by placing the crushed ore in an aqueous mixture containing by weight 2% to 6%
diesel oil, 0.05% to 0.4% of pine oil and 0.05% to 0.4% of a diamine.
diesel oil, 0.05% to 0.4% of pine oil and 0.05% to 0.4% of a diamine.
2. The process of claim 1 wherein said diamine is an alkyl propylene diamine.
3. The process of claim 2 wherein said alkyl propylene diamine is selected from the group consisting of tallow deriva-tive alkyl propylene diamines of the general formula RNHCH2CH=
CH NH2 wherein R ranges from C12 to C18.
CH NH2 wherein R ranges from C12 to C18.
4. A process as claimed in claim 3 in which R ranges from C14 C18.
5. The process of claim 1, 2 or 3 wherein the aqueous mixture contains, by weight, 4% diesel oil, 0.15% pine oil and 0.15% diamine.
6. The process of claim 1, 2 or 3 wherein the obtained concentrate of magnesite is subjected to at least one additional beneficiation process as defined in claim 1 to obtain a higher quality concentrate.
7. The process of claim 1, 2 or 3 wherein after crush-ing of the magnesite ore the ore is classified into particle size fractions of less than 0.5 mm, between 0.5 and 6 mm, and greater than 6 mm, and wherein only the fraction of between 0.5 to 6 mm is subjected to the subsequent conditioning and separation steps.
8. The process of claim 1, 2 or 3 wherein prior to subjecting the magnesite ore to crushing, it is mechanically pre-concentrated to further effect a concentrate of the magnesite.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GR5095476 | 1976-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1077441A true CA1077441A (en) | 1980-05-13 |
Family
ID=10927355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA280,169A Expired CA1077441A (en) | 1976-06-10 | 1977-06-09 | Method for enhancing artificially magnetic separation of minerals by the use of preconditioning reagents |
Country Status (9)
| Country | Link |
|---|---|
| AT (1) | AT352037B (en) |
| AU (1) | AU508549B2 (en) |
| BR (1) | BR7703702A (en) |
| CA (1) | CA1077441A (en) |
| IN (1) | IN146669B (en) |
| MX (1) | MX145788A (en) |
| TR (1) | TR20193A (en) |
| YU (1) | YU135677A (en) |
| ZA (1) | ZA773392B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728478A (en) * | 2012-07-07 | 2012-10-17 | 蚌埠玻璃工业设计研究院 | Beneficiation method for extracting feldspar and quartz from granite |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0091923B1 (en) * | 1981-10-26 | 1987-03-04 | W.S.R. Pty. Ltd. | Magnetic flotation |
| HU192986B (en) | 1984-05-23 | 1987-08-28 | Egyt Gyogyszervegyeszeti Gyar | Process for production of imidasodiline derivatives |
| ITMI20080142A1 (en) * | 2008-01-30 | 2009-07-31 | Zapi Ind Chimiche S P A | RENTENTICIDAL PREPARATION AT LOW ENVIRONMENTAL IMPACT |
-
1977
- 1977-06-01 YU YU135677A patent/YU135677A/en unknown
- 1977-06-01 IN IN823/CAL/77A patent/IN146669B/en unknown
- 1977-06-06 AT AT398077A patent/AT352037B/en not_active IP Right Cessation
- 1977-06-06 ZA ZA00773392A patent/ZA773392B/en unknown
- 1977-06-08 MX MX16939477A patent/MX145788A/en unknown
- 1977-06-08 TR TR2019377A patent/TR20193A/en unknown
- 1977-06-08 BR BR7703702A patent/BR7703702A/en unknown
- 1977-06-09 CA CA280,169A patent/CA1077441A/en not_active Expired
- 1977-06-09 AU AU25984/77A patent/AU508549B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728478A (en) * | 2012-07-07 | 2012-10-17 | 蚌埠玻璃工业设计研究院 | Beneficiation method for extracting feldspar and quartz from granite |
Also Published As
| Publication number | Publication date |
|---|---|
| MX145788A (en) | 1982-04-02 |
| ZA773392B (en) | 1978-04-26 |
| IN146669B (en) | 1979-08-11 |
| YU135677A (en) | 1982-08-31 |
| AU2598477A (en) | 1978-12-14 |
| AU508549B2 (en) | 1980-03-27 |
| ATA398077A (en) | 1979-02-15 |
| TR20193A (en) | 1980-11-01 |
| AT352037B (en) | 1979-08-27 |
| BR7703702A (en) | 1978-03-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |