CN103736585A - Method and system for separating high-chrome ilmenite - Google Patents
Method and system for separating high-chrome ilmenite Download PDFInfo
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- CN103736585A CN103736585A CN201410035147.4A CN201410035147A CN103736585A CN 103736585 A CN103736585 A CN 103736585A CN 201410035147 A CN201410035147 A CN 201410035147A CN 103736585 A CN103736585 A CN 103736585A
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Abstract
The invention discloses a method and a system for separating high-chrome ilmenite. The method includes: performing gravity separation on raw ores so as to obtain heavy minerals and tailings; performing first magnetic separation on the heavy minerals to obtain ferrotitanium rough concentrate and magnetic minerals; drying the ferrotitanium rough concentrate; roasting the dried ferrotitanium rough concentrate in a fluidized roasting furnace to obtained roasted products; performing second magnetic separation on the roasted products to obtain ilmenite concentrate and tailings. By the method combining fluidized roasting with magnetic separation, the ilmenite concentrate with Cr2O3 content not higher than 0.35wt% and TiO2 content being 46-48wt% can be effectively separated from the high-chrome ilmenite, and the quality requirements of subsequent chloride titanium white industries can be satisfied.
Description
Technical field
The invention belongs to technical field of mineral processing, particularly, the present invention relates to the method and system of the high chromium ilmenite of a kind of sorting.
Background technology
For the method for separating of ilmenite, still have much room for improvement at present.
CN103316761A discloses the separation method of a kind of ilmenite and chromite ore, comprise: ore sorts in advance, roasting, magnetic separation process, specifically comprise: will contain the ore of ilmenite and chromite, adopt gravity treatment or " weak magnetic-strong magnetic " technique to sort, the gangue mineral (mine tailing) of the part of skimming in advance, make chromite and ilmenite enrichment, form the mixed crude concentrate of ilmenite and chromite, gained mixed crude concentrate is adopted to rotary kiln, fluidized-bed or fluidized bed furnace oxidizing roasting, naturally cooling, then the material after oxidizing roasting is adopted strong magnetic in dry type to sort, obtain TiO
2content is 46～52% ilmenite concentrate, Cr
2o
3content is 32～60% chromite concentrate.But the method can not be applicable to ilmenite to carry out sorting.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, one object of the present invention is to propose a kind of effectively method and system of the separating ilmenite of separating titanium concentrate from high chromium ilmenite.
In one aspect of the invention, the present invention proposes the method for the high chromium ilmenite of a kind of sorting, the method comprises:
Raw ore is carried out to re-selection process, to obtain respectively heavy mineral and mine tailing;
Described heavy mineral is carried out to the first magnetic separation processing, to obtain respectively ferrotianium rough concentrate and magnetic mineral;
Described ferrotianium rough concentrate is dried to processing;
Ferrotianium rough concentrate through described dry processing is carried out to calcination process in fluidized roaster, to obtain product of roasting; And
Described product of roasting is carried out to the second magnetic separation processing, to obtain respectively ilmenite concentrate and mine tailing.
Thus, according to the method for the high chromium ilmenite of the sorting of the embodiment of the present invention, by the mode that adopts fluosolids roasting processing and magnetic separation processing to combine, can effectively from high chromium ilmenite, isolate Cr
2o
3content is not higher than 0.35 quality %, TiO
2content is the ilmenite concentrate of 46～48 quality %, thereby can meet follow-up titanium white chloride industry quality requirements.
In addition, the method for the high chromium ilmenite of sorting according to the above embodiment of the present invention can also have following additional technical characterictic:
In some embodiments of the invention, described raw ore contains: the SiO of 92.03 quality %
2; The TiO of 0.70 quality %
2; The FeTiO of 0.67 quality %
3; The ZrSiO of 0.12 quality %
4; The FeCr of 0.21 quality %
2o
4; The FeO(OH of 2.27 quality %); And other composition of 4.00 quality %.
In some embodiments of the invention, described the first magnetic separation processing is carried out under 0.08～0.15T magnetic field intensity.Thus, can effectively remove the strongly magnetic mineral in rough concentrate.
In some embodiments of the invention, described calcination process carries out completing for 0.3～1 hour under 650～770 degrees Celsius.Thus, can significantly improve the purity of ilmenite concentrate.
In some embodiments of the invention, described the second magnetic separation processing is to carry out under the magnetic field intensity of 0.4～0.6T.Thus, can further improve the purity of ilmenite concentrate.
In another aspect of the present invention, the present invention proposes the system of the high chromium ilmenite of a kind of sorting, this system comprises:
Gravity concentration apparatus, described gravity concentration apparatus is for carrying out re-selection process to raw ore, to obtain respectively heavy mineral and mine tailing;
The first concentration equipment, described the first concentration equipment is connected with described gravity concentration apparatus, for described heavy mineral being carried out to the first magnetic separation processing, to obtain respectively ferrotianium rough concentrate and magnetic mineral;
Drying device, described drying device is connected with described the first concentration equipment, for described ferrotianium rough concentrate is dried to processing;
Calciner, described calciner is connected with described drying device, for the ferrotianium rough concentrate through described dry processing is carried out to calcination process at fluidized roaster, to obtain product of roasting; And
The second concentration equipment, described the second concentration equipment is connected with described calciner, for described product of roasting being carried out to the second magnetic separation processing, to obtain respectively ilmenite concentrate and mine tailing.
According to the system of the high chromium ilmenite of the sorting of the embodiment of the present invention, can effectively implement the method for the high chromium ilmenite of above-mentioned sorting.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the method flow schematic diagram of the high chromium ilmenite of sorting according to an embodiment of the invention;
Fig. 2 is the system architecture schematic diagram of the high chromium ilmenite of sorting in accordance with another embodiment of the present invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In one aspect of the invention, the present invention proposes the method for the high chromium ilmenite of a kind of sorting.Below with reference to Fig. 1, the method for the high chromium ilmenite of the sorting of the embodiment of the present invention is described in detail.According to embodiments of the invention, the method comprises:
S100: re-selection process
Raw ore is carried out to re-selection process, thereby can obtain respectively heavy mineral and mine tailing.According to embodiments of the invention, the composition of raw ore is also not particularly limited, and according to a particular embodiment of the invention, raw ore can contain: the SiO of 92.03 quality %
2; The TiO of 0.70 quality %
2; The FeTiO of 0.67 quality %
3; The ZrSiO of 0.12 quality %
4; The FeCr of 0.21 quality %
2o
4; The FeO(OH of 2.27 quality %); And other composition of 4.00 quality %.
According to embodiments of the invention, the particular type of gravity treatment is also not particularly limited, and according to a particular embodiment of the invention, can adopt the mode of spiral chute to carry out re-selection process to raw ore.In this step, concrete, first raw ore is carried out to break process, obtaining particle diameter is the raw ore particle that is less than 0.3mm, then raw ore particle is added in spiral chute and under the effect of current, carries out re-selection process, wherein, the ore particle that density is little is discharged with ore pulp in chute outer rim, the ore particle that density is large is discharged from chute Inner edge, thereby can raw ore be separated according to ore particle density variation, can obtain respectively heavy mineral and mine tailing.
S200: the first magnetic separation processing
To carry out the first magnetic separation processing through re-selection process gained heavy mineral, thereby can obtain respectively ferrotianium rough concentrate and magnetic mine tailing.According to embodiments of the invention, the condition of the first magnetic separation processing is also not particularly limited, and according to a particular embodiment of the invention, the first magnetic separation processing can be carried out under the magnetic field intensity of 0.08～0.15T.Inventor's discovery, the too high meeting of magnetic field intensity makes the strong ilmenite of magnetic induction enter mine tailing, and under this condition, carries out the first magnetic separation processing and can significantly remove strongly magnetic mineral, thereby can improve the purity of gained ilmenite concentrate.Concrete, the magnetic mineral that the first magnetic separation is removed in processing is induction chromite and titanomagnetite.
S300: dry processing
According to embodiments of the invention, the ferrotianium rough concentrate of processing gained through the first magnetic separation is dried to processing.According to embodiments of the invention, higher through moisture content in the ferrotianium rough concentrate of the first magnetic separation processing.According to embodiments of the invention, to the withering method of ferrotianium rough concentrate and be not particularly limited, can be existing Drying Treatment Technology, as long as can be dried processing to ferrotianium rough concentrate, for example, can be natural air drying, oven dry etc.According to embodiments of the invention, dried ferrotianium rough concentrate is not moisture, otherwise rough concentrate can be in fluid bed defluidization.
S400: calcination process
By through super-dry processing ferrotianium rough concentrate under oxygen atmosphere, add fluidized roaster to carry out calcination process, thereby can obtain product of roasting.According to embodiments of the invention, the condition of calcination process is also not particularly limited, and according to a particular embodiment of the invention, calcination process can be carried out 0.3～1 hour and be completed under 650～770 degrees Celsius.In this step, concrete, the ferrotianium rough concentrate through super-dry processing is joined to fluidized roaster, under oxidizing atmosphere, carry out calcination process, in roasting process, (main component is TiO for ilmenite oxidation production bloodstone and rutile
2), improve ilmenite magnetic, thereby be conducive to later separation.Concrete, the oxidizing roasting reaction equation of ilmenite is as shown in Equation 1.
S500: the second magnetic separation processing
To carry out the second magnetic separation processing through the product of roasting of calcination process gained, thereby can obtain respectively ilmenite concentrate and mine tailing.According to embodiments of the invention, the condition of the second magnetic separation processing is also not particularly limited, and according to a particular embodiment of the invention, the second magnetic separation processing can be carried out under the magnetic field intensity of 0.4～0.6T.Particularly, stronger than chromite magnetic through the ilmenite magnetic of oxidation in product of roasting, therefore, product of roasting is added in dry type and in strong magnetic separator, carries out the second magnetic separation processing, can ilmenite concentrate is separation with chromite.
According to the method for the high chromium ilmenite of the sorting of the embodiment of the present invention, by the mode that adopts fluosolids roasting processing and magnetic separation processing to combine, can effectively from ilmenite, isolate Cr
2o
3content is not higher than 0.35 quality %, TiO
2content is the ilmenite concentrate of 46～48 quality %, thereby can meet follow-up titanium white chloride industry quality requirements.
In another aspect of the present invention, the present invention proposes the system of the high chromium ilmenite of a kind of sorting.Below with reference to Fig. 2, the system of the high chromium ilmenite of the sorting of the embodiment of the present invention is described in detail, according to embodiments of the invention, this system comprises:
Gravity concentration apparatus 100: according to embodiments of the invention, gravity concentration apparatus 100 has ore pulp entrance, heavy mineral outlet and mine tailing outlet.According to embodiments of the invention, gravity concentration apparatus 100 is for raw ore is carried out to re-selection process, thereby can obtain heavy mineral and mine tailing.According to embodiments of the invention, the composition of raw ore is also not particularly limited, and according to a particular embodiment of the invention, raw ore can contain: the SiO of 92.03 quality %
2; The TiO of 0.70 quality %
2; The FeTiO of 0.67 quality %
3; The ZrSiO of 0.12 quality %
4; The FeCr of 0.21 quality %
2o
4; The FeO(OH of 2.27 quality %); And other composition of 4.00 quality %.
According to embodiments of the invention, the particular type of gravity concentration apparatus is also not particularly limited, and according to a particular embodiment of the invention, can adopt spiral chute to carry out re-selection process to raw ore.Concrete, first raw ore is carried out to break process, obtain particle diameter for being less than 0.3mm raw ore particle, then raw ore particle is added and in spiral chute, under the effect of current, carry out re-selection process, wherein, the ore particle that density is little is discharged with ore pulp in chute outer rim, and the ore particle that density is large is discharged from chute Inner edge, thereby can raw ore be separated according to ore particle density variation, can obtain respectively heavy mineral and mine tailing.
The first concentration equipment 200: according to embodiments of the invention, the first concentration equipment 200 has heavy mineral entrance, rough concentrate outlet and magnetic mineral outlet, wherein, rough concentrate entrance can be connected with the ore pulp outlet on gravity concentration apparatus 100, for gravity concentration apparatus 100 gained heavy minerals are carried out to the first magnetic separation processing, thereby can obtain respectively ferrotianium rough concentrate and magnetic mineral.According to embodiments of the invention, in the first concentration equipment 200, carry out the condition of the first magnetic separation processing and be not particularly limited, according to a particular embodiment of the invention, the first magnetic separation processing can be carried out under the magnetic field intensity of 0.08～0.15T.Inventor's discovery, the too high meeting of magnetic field intensity makes the strong ilmenite of magnetic induction enter mine tailing, and under this condition, carries out the first magnetic separation processing and can significantly remove strongly magnetic mineral, thereby can improve the purity of gained ilmenite concentrate.Concrete, the magnetic mineral that the first magnetic separation is removed in processing is induction chromite and titanomagnetite.
Drying device 300: according to embodiments of the invention, drying device 300 is connected with the rough concentrate outlet on the first concentration equipment 200, in to being dried processing through the ferrotianium rough concentrate of the first magnetic separation processing gained.According to embodiments of the invention, higher through moisture content in the ferrotianium rough concentrate of the first magnetic separation processing.According to embodiments of the invention, to the withering method of ferrotianium rough concentrate and be not particularly limited, can be existing Drying Treatment Technology, as long as can be dried processing to ferrotianium rough concentrate, for example, can be natural air drying, oven dry etc.According to embodiments of the invention, dried ferrotianium rough concentrate is not moisture, otherwise rough concentrate can be in fluid bed defluidization.
Calciner 400: according to embodiments of the invention, calciner 400 has material inlet, air intake, exhanst gas outlet and product of roasting outlet.According to embodiments of the invention, material inlet is connected with drying device 300, for adding fluidized roaster to carry out calcination process under oxygen atmosphere the ferrotianium rough concentrate through super-dry processing, thereby can obtain product of roasting.According to embodiments of the invention, in calciner 400, carry out the condition of calcination process and be not particularly limited, according to a particular embodiment of the invention, calcination process can be carried out 0.3～1 hour and be completed under 650～770 degrees Celsius.Concrete, the ferrotianium rough concentrate through super-dry processing is joined to fluidized roaster, under oxidizing atmosphere, carry out calcination process, in roasting process, (main component is TiO for ilmenite oxidation production bloodstone and rutile
2), improve ilmenite magnetic, thereby be conducive to later separation.Concrete oxidizing roasting reaction equation is as shown in above formula 1.
The second concentration equipment 500: according to embodiments of the invention, the second concentration equipment 500 has mineral entrance, ilmenite concentrate outlet and mine tailing outlet.According to embodiments of the invention, mineral entrance is connected with the product of roasting outlet of calciner 400, for the product of roasting of process calcination process gained is carried out to the second magnetic separation processing, thereby obtains respectively ilmenite concentrate and mine tailing.According to embodiments of the invention, in the second concentration equipment 500, carry out the condition of the second magnetic separation processing and be not particularly limited, according to a particular embodiment of the invention, the second magnetic separation processing can be carried out under the magnetic field intensity of 0.4～0.6T.Particularly, stronger than chromite magnetic through the ilmenite magnetic of oxidation in product of roasting, therefore, product of roasting is added in dry type and in strong magnetic separator, carries out the second magnetic separation processing, can ilmenite concentrate is separation with chromite.
According to the system of the high chromium ilmenite of the sorting of the embodiment of the present invention, can effectively implement the method for the high chromium ilmenite of above-mentioned sorting, by adopting the mode that fluosolids roasting is processed and magnetic separation processing combines effectively to isolate Cr from contain the ilmenite of High Content Chromium iron ore
2o
3content is not higher than 0.35 quality %, TiO
2content is the ilmenite concentrate of 46～48 quality %, thereby can meet follow-up titanium white chloride industry quality requirements.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.
Claims (6)
1. a method for the high chromium ilmenite of sorting, is characterized in that, comprising:
Raw ore is carried out to re-selection process, to obtain respectively heavy mineral and mine tailing;
Described heavy mineral is carried out to the first magnetic separation processing, to obtain respectively ferrotianium rough concentrate and magnetic mineral;
Described ferrotianium rough concentrate is dried to processing;
Ferrotianium rough concentrate through described dry processing is carried out to calcination process in fluidized roaster, to obtain product of roasting; And
Described product of roasting is carried out to the second magnetic separation processing, to obtain respectively ilmenite concentrate and mine tailing.
2. the method for the high chromium ilmenite of sorting according to claim 1, is characterized in that, described raw ore contains:
The SiO of 92.03 quality %
2;
The TiO of 0.70 quality %
2;
The FeTiO of 0.67 quality %
3;
The ZrSiO of 0.12 quality %
4;
The FeCr of 0.21 quality %
2o
4;
The FeO(OH of 2.27 quality %); And
Other composition of 4.00 quality %.
3. the method for the high chromium ilmenite of sorting according to claim 1, is characterized in that, described the first magnetic separation processing is to carry out under the magnetic field intensity of 0.08～0.15T.
4. the method for the high chromium ilmenite of sorting according to claim 1, is characterized in that, described calcination process carries out completing for 0.3～1 hour under 650～770 degrees Celsius.
5. the method for the high chromium ilmenite of sorting according to claim 1, is characterized in that, described the second magnetic separation processing is to carry out under the magnetic field intensity of 0.4～0.6T.
6. a system for the high chromium ilmenite of sorting, is characterized in that, comprising:
Gravity concentration apparatus, described gravity concentration apparatus is for carrying out re-selection process to raw ore, to obtain respectively heavy mineral and mine tailing;
The first concentration equipment, described the first concentration equipment is connected with described gravity concentration apparatus, for described heavy mineral being carried out to the first magnetic separation processing, to obtain respectively ferrotianium rough concentrate and magnetic mineral;
Drying device, described drying device is connected with described the first concentration equipment, for described ferrotianium rough concentrate is dried to processing;
Calciner, described calciner is connected with described drying device, for the ferrotianium rough concentrate through described dry processing is carried out to calcination process at fluidized roaster, to obtain product of roasting; And
The second concentration equipment, described the second concentration equipment is connected with described calciner, for described product of roasting being carried out to the second magnetic separation processing, to obtain respectively ilmenite concentrate and mine tailing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410035147.4A CN103736585A (en) | 2014-01-24 | 2014-01-24 | Method and system for separating high-chrome ilmenite |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057086A (en) * | 2015-07-20 | 2015-11-18 | 华北理工大学 | Processing method for fine-grained disseminated rutile ore difficult to separate |
| CN105080703A (en) * | 2015-09-14 | 2015-11-25 | 大连欣佳和矿业有限公司 | Casting-grade chrome ore dressing device and technology |
| CN106861892A (en) * | 2017-03-10 | 2017-06-20 | 长沙矿冶研究院有限责任公司 | A kind of sorting unit and method for separating containing chromite and ilmenite ore |
| CN108246496A (en) * | 2018-01-16 | 2018-07-06 | 东北大学 | A kind of ilmenite ores separation beneficiation method of titano-hematite |
| CN111286630A (en) * | 2020-02-28 | 2020-06-16 | 东北大学 | Method for removing impurities and purifying titanium concentrate through suspension roasting |
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| CN1429919A (en) * | 2002-10-18 | 2003-07-16 | 中国科学院过程工程研究所 | Method of producing titanium enriched material using titanium mineral |
| CN103316761A (en) * | 2013-07-09 | 2013-09-25 | 昆明冶金研究院 | Separation method for ore containing ilmenite and chromite |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057086A (en) * | 2015-07-20 | 2015-11-18 | 华北理工大学 | Processing method for fine-grained disseminated rutile ore difficult to separate |
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| CN105080703A (en) * | 2015-09-14 | 2015-11-25 | 大连欣佳和矿业有限公司 | Casting-grade chrome ore dressing device and technology |
| CN106861892A (en) * | 2017-03-10 | 2017-06-20 | 长沙矿冶研究院有限责任公司 | A kind of sorting unit and method for separating containing chromite and ilmenite ore |
| CN108246496A (en) * | 2018-01-16 | 2018-07-06 | 东北大学 | A kind of ilmenite ores separation beneficiation method of titano-hematite |
| CN111286630A (en) * | 2020-02-28 | 2020-06-16 | 东北大学 | Method for removing impurities and purifying titanium concentrate through suspension roasting |
| CN111286630B (en) * | 2020-02-28 | 2021-06-15 | 东北大学 | Method for removing impurities and purifying titanium concentrate through suspension roasting |
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Application publication date: 20140423 |