CN105107617A - Method for increasing comprehensive utilization ratio of ilmenite - Google Patents
Method for increasing comprehensive utilization ratio of ilmenite Download PDFInfo
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- CN105107617A CN105107617A CN201510605114.3A CN201510605114A CN105107617A CN 105107617 A CN105107617 A CN 105107617A CN 201510605114 A CN201510605114 A CN 201510605114A CN 105107617 A CN105107617 A CN 105107617A
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Abstract
The invention discloses a method for increasing the comprehensive utilization ratio of ilmenite. According to the method, raw ore of the ilmenite is crushed and ball-milled and then subjected to weak magnetic separation, and after a first segment of iron ore concentrate is separated, tailings generated after iron separation are subjected to high-gradient strong magnetic separation so that a first segment of titanium middlings can be obtained. The first segment of titanium middlings are fine ground and graded, and fine particle segments are subjected to weak magnetic separation so that a second segment of iron ore concentrate and a second segment of titanium middlings can be separated. The second segment of titanium middlings are subjected to high-gradient strong magnetic separation so that a third segment of high-grade titanium middlings can be obtained. Flotation is performed on the third segment of titanium middlings so that titanium concentrate can be obtained. The beneficiation flowsheet in a traditional method is simple, full-particle-size selection is performed, the flotation procedure is verbose and complex, the using amount of chemicals is large, production cost is high, and consequently the current comprehensive utilization ratio of ilmenite is commonly low. The method achieves the advantages that the flotation procedure is short, the using amount of chemicals is small, production cost is low, management efficiency is high, production indexes are stable, and therefore high-grade and high-recovery-rate titanium concentrate is obtained, and the comprehensive utilization ratio of ilmenite is remarkably increased.
Description
Technical field
The present invention relates to the beneficiation method of ilmenite, especially relate to a kind of method improving ilmenite comprehensive utilization ratio.
Background technology
Current, Titanium in Ilmenite sort general employing " the thick smart high intensity magnetic separation+flotation of high gradient one " Conventional processing methods, namely, ilmenite raw ore is after weak magnetic separation iron flow process selects iron ore concentrate, obtained the titanium chats of medium grade by " the thick smart high intensity magnetic separation of high gradient one " flow process, then titanium chats enters that flotation flowsheet (being generally " one roughing-four selected-secondaries are scanned " flow process) is selected obtains ilmenite concentrate.In this technological process, high gradient magnetic dressing process is too simple, and for wholegrain level selected, cause titanium recovery rate low, the titanium grade of titanium chats is low; And for obtaining high-grade ilmenite concentrate, the tediously long complexity of flotation flowsheet, cause dosing large, production cost is high, difficult management; Final ilmenite concentrate index, by large to ore deposit influence of fluctuations, is produced unstable.This present situation, causes current titanium resource comprehensive utilization ratio general lower.Therefore need a kind of more high-quality and efficient process to improve ilmenite comprehensive utilization ratio, thus obtain the ilmenite concentrate of high-quality.
Summary of the invention
The object of this invention is to provide a kind of method that can significantly improve ilmenite comprehensive utilization ratio, the method shortens flotation flowsheet, decrease dosing, reduce production cost, improve the efficiency of management, production target is stablized, thus significantly improves the comprehensive utilization ratio of ilmenite while obtaining high-grade ilmenite concentrate.
The object of the present invention is achieved like this:
Improve a method for ilmenite comprehensive utilization ratio, feature is:
A, fragmentation-screening stage: ilmenite raw ore is sent in jaw crusher and slightly breaks, then send in gyratory crusher and carry out thin broken, then with Belt Conveying to vibratory sieve, through screening, obtain the ore of all-2mm grades;
In B, ore grinding-classification stage: sent into by the ore of-2mm grade in one section of ball mill and carry out ball milling, mog is-200 orders 70%;
C, first paragraph low intensity magnetic separation stage: obtain after ore grinding one section of ore pulp is sent into half adverse current permanent-magnet drum type magnetic separator and carries out weak magnetic separation iron flow process, select first paragraph iron ore concentrate and first paragraph iron selection tailings;
D, first paragraph High gradient high intensity magnetic separation stage: first paragraph iron selection tailings is sent into pulsating high gradient magnetic separator with vertical ring and carries out " high gradient one slightly sweeps high intensity magnetic separation " Beneficiation flowsheet, obtain first paragraph titanium chats;
E, to regrind-second segment low intensity magnetic separation the stage: first paragraph titanium chats is sent into ball mill and carries out fine grinding classification, mog accounts for 90% for-200 object fine fractions, coarse component returns to be regrinded, and fine fraction is sent into half adverse current permanent-magnet drum type magnetic separator and selected second segment iron ore concentrate and second segment titanium chats through weak magnetic separation iron flow process;
F, second segment High gradient high intensity magnetic separation stage: second segment titanium chats is sent into pulsating high gradient magnetic separator with vertical ring and enters " high gradient one is single-minded sweeps high intensity magnetic separation " Beneficiation flowsheet, obtain more high-grade 3rd section of titanium chats;
G, flotation stage: the 3rd section of titanium chats is sent into concentrator carry out concentrated after, then send into flotation device and enter flotation flowsheet: one roughing-recleaning-secondary is scanned, and obtains final ilmenite concentrate.
The present invention be by ilmenite raw ore through the method for fragmentation-two stage grinding-two sections low intensity magnetic separation-two sections High gradient high intensity magnetic separation-flotation flowsheet operation to obtain high-grade ilmenite concentrate.Main feature of the present invention is:
1) titanium is in High gradient high intensity magnetic separation flow process, carries out fine grinding classification and improves ilmenite liberation degree of minerals, and then carry out High gradient high intensity magnetic separation, considerably improve grade and the rate of recovery of Part III titanium chats after tailings discarding by preconcentration;
2) because flotation flowsheet significantly improves to the titanium grade of ore deposit (i.e. Part III titanium chats), flotation flowsheet can simplify greatly, significantly reduces dosing and production cost;
3) because the titanium recovery rate of High gradient high intensity magnetic separation flow process significantly improves, and flotation flowsheet is simplified, and therefore can significantly improve the rate of recovery of final ilmenite concentrate.
Therefore, the present invention compares with conventional method, has the following advantages:
1, in the middle of High gradient high intensity magnetic separation flow process, increase fine grinding classification and select flowing molten iron journey, ensure that fully dissociating of ilmenite on the one hand, the second segment iron extract mine producation of certain productive rate can be obtained on the other hand.
2, high gradient one is single-minded sweeps high intensity magnetic separation operation, guarantees the 3rd section of titanium chats that can obtain high-grade and high-recovery, in the present invention, the raising of titanium recovery rate is laid a good foundation.
3, because High gradient high intensity magnetic separation flow process can obtain more high-grade 3rd section of titanium chats, flotation flowsheet below can be simplified, greatly reduce dosing, thus significantly reduce the financial cost of ilmenite concentrate production.
The present invention and tradition select titanium method in Sichuan, the production target of Chongqing Xuan Tai factory contrasts, respectively as shown in table 1, table 2:
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
Improve a method for ilmenite comprehensive utilization ratio, concrete steps are as follows:
A, fragmentation-screening stage: ilmenite raw ore is sent in jaw crusher and slightly breaks, then send in gyratory crusher and carry out thin broken, then with Belt Conveying to vibratory sieve, through screening, obtain the ore of all-2mm grades;
In B, ore grinding-classification stage: sent into by the ore of-2mm grade in one section of ball mill and carry out ball milling, mog is-200 orders 70%;
C, first paragraph low intensity magnetic separation stage: obtain after ore grinding one section of ore pulp is sent into half adverse current permanent-magnet drum type magnetic separator and carries out weak magnetic separation iron flow process, select first paragraph iron ore concentrate and first paragraph iron selection tailings;
D, first paragraph High gradient high intensity magnetic separation stage: first paragraph iron selection tailings is sent into pulsating high gradient magnetic separator with vertical ring and carries out " high gradient one slightly sweeps high intensity magnetic separation " Beneficiation flowsheet, obtain first paragraph titanium chats;
E, to regrind-second segment low intensity magnetic separation the stage: first paragraph titanium chats is sent into ball mill and carries out fine grinding classification, mog accounts for 90% for-200 object fine fractions, coarse component returns to be regrinded, and fine fraction is sent into half adverse current permanent-magnet drum type magnetic separator and selected second segment iron ore concentrate and second segment titanium chats through weak magnetic separation iron flow process;
F, second segment High gradient high intensity magnetic separation stage: second segment titanium chats is sent into pulsating high gradient magnetic separator with vertical ring and enters " high gradient one is single-minded sweeps high intensity magnetic separation " Beneficiation flowsheet, obtain more high-grade 3rd section of titanium chats;
G, flotation stage: the 3rd section of titanium chats is sent into concentrator carry out concentrated after, then send into flotation device and enter flotation flowsheet: one roughing-recleaning-secondary is scanned, and obtains final ilmenite concentrate.
Claims (1)
1. improve a method for ilmenite comprehensive utilization ratio, it is characterized in that: concrete steps are as follows:
A, fragmentation-screening stage: ilmenite raw ore is sent in jaw crusher and slightly breaks, then send in gyratory crusher and carry out thin broken, then with Belt Conveying to vibratory sieve, through screening, obtain the ore of all-2mm grades;
In B, ore grinding-classification stage: sent into by the ore of-2mm grade in one section of ball mill and carry out ball milling, mog is-200 orders 70%;
C, first paragraph low intensity magnetic separation stage: obtain after ore grinding one section of ore pulp is sent into half adverse current permanent-magnet drum type magnetic separator and carries out weak magnetic separation iron flow process, select first paragraph iron ore concentrate and first paragraph iron selection tailings;
D, first paragraph High gradient high intensity magnetic separation stage: first paragraph iron selection tailings is sent into pulsating high gradient magnetic separator with vertical ring and carries out " high gradient one slightly sweeps high intensity magnetic separation " Beneficiation flowsheet, obtain first paragraph titanium chats;
E, to regrind-second segment low intensity magnetic separation the stage: first paragraph titanium chats is sent into ball mill and carries out fine grinding classification, mog accounts for 90% for-200 object fine fractions, coarse component returns to be regrinded, and fine fraction is sent into half adverse current permanent-magnet drum type magnetic separator and selected second segment iron ore concentrate and second segment titanium chats through weak magnetic separation iron flow process;
F, second segment High gradient high intensity magnetic separation stage: second segment titanium chats is sent into pulsating high gradient magnetic separator with vertical ring and enters " high gradient one is single-minded sweeps high intensity magnetic separation " Beneficiation flowsheet, obtain more high-grade 3rd section of titanium chats;
G, flotation stage: the 3rd section of titanium chats is sent into concentrator carry out concentrated after, then send into flotation device and enter flotation flowsheet: one roughing-recleaning-secondary is scanned, and obtains final ilmenite concentrate.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362858A (en) * | 2016-10-14 | 2017-02-01 | 鞍钢集团矿业有限公司 | Process for extracting cement-replacing superfine iron tailing powder from iron tailings |
| CN108080138A (en) * | 2017-12-12 | 2018-05-29 | 河钢股份有限公司承德分公司 | A kind of method that titanium chats is sorted from iron selection tailings |
| CN108993766A (en) * | 2018-07-24 | 2018-12-14 | 昆明冶金研究院 | A kind of ore dressing processing method of weathering type ilmenite |
| CN110898957A (en) * | 2019-11-13 | 2020-03-24 | 鞍钢集团矿业有限公司 | Particle size grading pre-selection tailing discarding process for extremely lean hematite |
| CN112538567A (en) * | 2020-10-30 | 2021-03-23 | 河南佰利联新材料有限公司 | Method for comprehensively recovering chromite from chromium-titanium-containing middling |
| CN113713964A (en) * | 2021-07-29 | 2021-11-30 | 四川谨而睿科技有限公司 | Method for recovering titanium concentrate from hypo-iron ore in titanomagnetite recovery process |
| CN114054199A (en) * | 2021-11-15 | 2022-02-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing titanium middling by utilizing titanium-selecting tailings |
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| CN103041912A (en) * | 2012-12-11 | 2013-04-17 | 攀钢集团矿业有限公司 | Beneficiation method of low-grade ilmenite |
| CN103706463A (en) * | 2013-12-19 | 2014-04-09 | 攀钢集团矿业有限公司 | Titanium separation method |
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| CN103041912A (en) * | 2012-12-11 | 2013-04-17 | 攀钢集团矿业有限公司 | Beneficiation method of low-grade ilmenite |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362858A (en) * | 2016-10-14 | 2017-02-01 | 鞍钢集团矿业有限公司 | Process for extracting cement-replacing superfine iron tailing powder from iron tailings |
| CN108080138A (en) * | 2017-12-12 | 2018-05-29 | 河钢股份有限公司承德分公司 | A kind of method that titanium chats is sorted from iron selection tailings |
| CN108993766A (en) * | 2018-07-24 | 2018-12-14 | 昆明冶金研究院 | A kind of ore dressing processing method of weathering type ilmenite |
| CN108993766B (en) * | 2018-07-24 | 2020-10-13 | 昆明冶金研究院 | Ore dressing treatment method for weathered ilmenite |
| CN110898957A (en) * | 2019-11-13 | 2020-03-24 | 鞍钢集团矿业有限公司 | Particle size grading pre-selection tailing discarding process for extremely lean hematite |
| CN112538567A (en) * | 2020-10-30 | 2021-03-23 | 河南佰利联新材料有限公司 | Method for comprehensively recovering chromite from chromium-titanium-containing middling |
| CN112538567B (en) * | 2020-10-30 | 2022-08-09 | 河南佰利联新材料有限公司 | Method for comprehensively recovering chromite from chromium-titanium-containing middling |
| CN113713964A (en) * | 2021-07-29 | 2021-11-30 | 四川谨而睿科技有限公司 | Method for recovering titanium concentrate from hypo-iron ore in titanomagnetite recovery process |
| CN114054199A (en) * | 2021-11-15 | 2022-02-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing titanium middling by utilizing titanium-selecting tailings |
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Application publication date: 20151202 |