CN102631980A - Method for improving titanium dressing recovery rate of ilmenite - Google Patents
Method for improving titanium dressing recovery rate of ilmenite Download PDFInfo
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- CN102631980A CN102631980A CN2012101134292A CN201210113429A CN102631980A CN 102631980 A CN102631980 A CN 102631980A CN 2012101134292 A CN2012101134292 A CN 2012101134292A CN 201210113429 A CN201210113429 A CN 201210113429A CN 102631980 A CN102631980 A CN 102631980A
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Abstract
The invention discloses a method for improving titanium dressing recovery rate of ilmenite. The method comprises the following steps of: separating iron ore concentrate from raw ilmenite through a primary iron dressing flow; carrying out a primary high-gradient magnetic separation flow to obtain primary titanium middling; separating secondary iron ore concentrate through a grading and fine grinding flow and a secondary iron dressing flow; and carrying out a secondary high-gradient magnetic separation flow to obtain high-grade secondary titanium middling; and carrying out a flotation flow on secondary titanium middling to obtain titanium ore concentrate. The method has the characteristics that (1) the dissociation degree of the ilmenite is improved after titanium is graded and ground in the primary high-gradient magnetic separation flow, and the grade and the recovery rate of the secondary titanium middling are improved by the secondary high-gradient magnetic separation flow; (2) because the titanium grade of the ore is remarkably improved by the flotation flow, the flotation flow is greatly simplified, the consumption of agents is greatly reduced, and the production cost is reduced; and (3) because the titanium recovery rate is remarkably improved by the high-gradient magnetic separation flows, the flotation flow is simplified, and the titanium recovery rate of the final titanium ore concentrate can be obviously improved.
Description
Technical field
The present invention relates to the recovery method of ilmenite titanium, especially relate to a kind of method that ilmenite selects titanium recovery rate that improves.
Background technology
Current; The conventional method that sorts general employing " high-gradient magnetic separation one thick one selected-flotation " of titanium in the ilmenite; That is: the ilmenite raw ore is earlier after selecting the flowing molten iron journey to select iron ore concentrate; Obtain the titanium chats of medium grade through " high-gradient magnetic separation one thick is selected " flow process again, then the titanium chats gets into the selected ilmenite concentrate that obtains of flotation flowsheet (being generally " four selected secondaries of one roughing are scanned " flow process).The main feature of this technological process is: the flow process of (1), high-gradient magnetic separation is too simple, and for the wholegrain level is selected, causes titanium recovery rate low, and the titanium grade of titanium chats is low; (2), for obtaining high-grade ilmenite concentrate, the tediously long complicacy of flotation flowsheet causes dosing big, production cost is high, difficult management; (3), the index of final ilmenite concentrate receives to the influence of ore deposit fluctuation greatly, produces unstable.This present situation causes current titanium resource comprehensive utilization ratio generally lower.
Summary of the invention
The object of the invention just provides the titanium recovery rate of the final ilmenite concentrate of a kind of obvious raising, reduce dosing and production cost, method greatly simply improves the method that ilmenite selects titanium recovery rate.
The objective of the invention is to realize like this:
A kind ofly improve the method that ilmenite selects titanium recovery rate, characteristic is:
1, select the flowing molten iron journey for the first time: with primary ilmenite ore through broken, ore grinding after first order drum magnetic separator is selected iron ore concentrate, iron concentrate grade reaches TFe>=55%, selects T TiO in the mine tailing behind the iron ore concentrate
28～11%;
2, first high gradient magnetic dressing process: will select mine tailing behind the iron ore concentrate and send into first order SLON pulsating high gradient magnetic separator with vertical ring and roughly select afterwards earlier and scan (being that high-gradient magnetic separation one thick is scanned) and obtain first titanium chats; The operation productive rate of first titanium chats is 47%, T TiO in the first titanium chats
2>=19%;
3, classification fine grinding flow process: it is that 100 purpose vibratory sieves carry out classification that first titanium chats is sent into sieve aperture; Oversize gets into the ball mill ore grinding again; The ore pulp that grinds turns back to the vibratory sieve classification again; Through the degree of dissociation of classification fine grinding with the first titanium chats of further raising, the granularity of screenings is reached below 100 orders, obtain first titanium chats particulate;
4, secondary selects the flowing molten iron journey: get into second level drum magnetic separator sorting through the first titanium chats particulate after the classification fine grinding and obtain time iron ore concentrate, the grade TFe of inferior iron ore concentrate >=48%;
5, secondary high gradient magnetic dressing process: will select mine tailing behind time iron ore concentrate and send into second level SLON pulsating high gradient magnetic separator with vertical ring and carry out scanning (being high-gradient magnetic separation one single-minded scanning) after earlier selected and obtain secondary titanium chats than high-grade; The operation productive rate of secondary titanium chats is 28%, secondary titanium chats grade T TiO
2>=29%;
6, flotation flowsheet: select secondary titanium chats after the titanium flow process to send into flotation device secondary and carry out flotation (being that one roughing recleaning secondary is scanned) and obtain final ilmenite concentrate, the operation productive rate 12.19% of ilmenite concentrate, the grade T TiO of ilmenite concentrate
2>=47%, the rate of recovery T TiO of ilmenite concentrate
2>=55%;
7, the ilmenite concentrate of the iron ore concentrate of gained and step 6 gained in the step 1, dry back through respectively again as obtaining iron ore concentrate finished product, ilmenite concentrate finished product.
Main feature of the present invention is:
(1), titanium in first high gradient magnetic dressing process, behind tailings discarding by preconcentration, carry out the fine grinding classification, improved the degree of dissociation of titanium, and then carried out the secondary high gradient magnetic dressing process, thereby improved the grade and the rate of recovery of final titanium chats significantly;
(2), because flotation flowsheet significantly improves for the titanium grade in ore deposit (being secondary titanium chats), and flotation flowsheet just can be simplified greatly, and then greatly reduces dosing, make the production cost reduction;
(3) because the titanium recovery rate of first high gradient magnetic dressing process and secondary high gradient magnetic dressing process significantly improves, and flotation flowsheet is able to simplification, therefore, can obviously improve the titanium recovery rate of final ilmenite concentrate.
The present invention selects the titanium recovery method to compare with traditional ilmenite, has the following advantages:
(1), behind first high gradient magnetic dressing process, increased classification fine grinding flow process and secondary selects the flowing molten iron journey, guaranteed fully dissociating of ilmenite on the one hand, can obtain the inferior iron extract mine producation of certain productive rate on the other hand.
(2), will select mine tailing behind time iron ore concentrate and carry out " high-gradient magnetic separation one single-minded scan operation " again, guarantee to obtain the secondary titanium chats of high-grade and high-recovery, for the raising of titanium recovery rate is laid a good foundation.
(3), since the secondary high gradient magnetic dressing process can obtain secondary titanium chats than high-grade, the back flotation flowsheet can simplify greatly, reagent consumption can obviously reduce, thereby can obviously reduce the production cost of ilmenite concentrate.
The specific embodiment
Below in conjunction with embodiment the present invention is done further explain.
Embodiment:
A kind ofly improve the method that ilmenite selects titanium recovery rate, concrete steps are following:
1, certain primary ilmenite ore is selected iron ore concentrate through two sections weak magnetic separation iron flow processs of first order drum magnetic separator behind broken, ore grinding, and iron concentrate grade reaches TFe=55.86%, wherein selects T TiO in the mine tailing behind the iron ore concentrate
2=10.34%;
2, will select mine tailing behind the iron ore concentrate sends into first order SLON pulsating high gradient magnetic separator with vertical ring and carries out " high-gradient magnetic separation one thick is scanned " and obtain first titanium chats, the operation productive rate 47.35% of first titanium chats, T TiO in the first titanium chats
2=19.13%;
3, first titanium chats being sent into sieve aperture is that 100 purpose vibratory sieves carry out classification; Oversize gets into the ball mill ore grinding again; The ore pulp that grinds turns back to the vibratory sieve classification again; Through the degree of dissociation of classification fine grinding with the first titanium chats of further raising, the screenings granularity is reached below 100 orders, obtain first titanium chats particulate;
4, through the first titanium chats particulate after the classification fine grinding, one section weak magnetic separation iron flow process of drum magnetic separator obtains time iron ore concentrate, the grade TFe=48.45% of inferior iron ore concentrate through the second level;
5, will select mine tailing behind time iron ore concentrate sends into second level SLON pulsating high gradient magnetic separator with vertical ring and carries out " high-gradient magnetic separation one single-minded scanning " and obtain the secondary titanium chats than high-grade; The operation productive rate 29.62% of secondary titanium chats, the grade T TiO of secondary titanium chats
2=29.36%;
6, select secondary titanium chats after the titanium flow process to send into flotation device secondary and carry out flotation " one roughing recleaning secondary is scanned " and obtain final ilmenite concentrate, the operation productive rate of ilmenite concentrate is 12.19%, the grade T TiO of ilmenite concentrate
2=47.35%, ilmenite concentrate rate of recovery T TiO
2=55.82%;
7, the ilmenite concentrate of the iron ore concentrate of gained and step 6 gained in the step 1, dry back through respectively again as obtaining iron ore concentrate finished product, ilmenite concentrate finished product.
The present invention and traditional selecting titanium method are in the production target contrast of certain ilmenite, like table 1.
Table 1
| Select the titanium flow process | Give ore deposit grade/(%, TiO 2) | Ilmenite concentrate productive rate/% | Ilmenite concentrate grade/(%, TiO 2) | Titanium recovery rate/% |
| Traditional handicraft | 10.46 | 8.65 | 47.01 | 38.88 |
| The present invention | 10.34 | 12.19 | 47.35 | 55.82 |
| Difference | -0.12 | + 3.54 | + 0.34 | + 16.94 |
Claims (1)
1. one kind is improved the method that ilmenite selects titanium recovery rate, it is characterized in that:
(1), for the first time select the flowing molten iron journey: with primary ilmenite ore through broken, ore grinding after first order drum magnetic separator is selected iron ore concentrate, iron concentrate grade reaches TFe>=55%, selects T TiO in the mine tailing behind the iron ore concentrate
28～11%;
(2), first high gradient magnetic dressing process: will select mine tailing behind the iron ore concentrate and send into first order SLON pulsating high gradient magnetic separator with vertical ring and roughly select afterwards earlier and scan (being that high-gradient magnetic separation one thick is scanned) and obtain first titanium chats; The operation productive rate of first titanium chats is 47%, T TiO in the first titanium chats
2>=19%;
(3), classification fine grinding flow process: it is that 100 purpose vibratory sieves carry out classification that first titanium chats is sent into sieve aperture; Oversize gets into the ball mill ore grinding again; The ore pulp that grinds turns back to the vibratory sieve classification again; Through the degree of dissociation of classification fine grinding with the first titanium chats of further raising, the granularity of screenings is reached below 100 orders, obtain first titanium chats particulate;
(4), secondary selects the flowing molten iron journey: get into second level drum magnetic separator sorting through the first titanium chats particulate after the classification fine grinding and obtain time iron ore concentrate, the grade TFe of inferior iron ore concentrate >=48%;
(5), secondary high gradient magnetic dressing process: will select mine tailing behind time iron ore concentrate and send into second level SLON pulsating high gradient magnetic separator with vertical ring and carry out scanning (being high-gradient magnetic separation one single-minded scanning) after earlier selected and obtain secondary titanium chats than high-grade; The operation productive rate of secondary titanium chats is 28%, secondary titanium chats grade T TiO
2>=29%;
(6), flotation flowsheet: select secondary titanium chats after the titanium flow process to send into flotation device secondary and carry out flotation (being that one roughing recleaning secondary is scanned) and obtain final ilmenite concentrate, the operation productive rate 12.19% of ilmenite concentrate, the grade T TiO of ilmenite concentrate
2>=47%, the rate of recovery T TiO of ilmenite concentrate
2>=55%;
(7), the iron ore concentrate of gained and the ilmenite concentrate of step 6 gained in the step 1, again through dry back respectively as obtaining iron ore concentrate finished product, ilmenite concentrate finished product.
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| CN2012101134292A CN102631980A (en) | 2012-04-18 | 2012-04-18 | Method for improving titanium dressing recovery rate of ilmenite |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495500A (en) * | 2013-09-23 | 2014-01-08 | 长沙矿冶研究院有限责任公司 | Low-energy-consumption method for separating ilmenites from tailings in iron choosing plant |
| CN103909022A (en) * | 2014-04-07 | 2014-07-09 | 吉林大学 | Weathered-type ilmenite titanium flotation regent and titanium flotation method |
| CN104174486A (en) * | 2014-07-16 | 2014-12-03 | 珠海蓝天地力投资控股有限公司 | Combined magnetic separation process for selecting weathering sand ilmenite |
| CN104437880A (en) * | 2014-11-26 | 2015-03-25 | 四川龙蟒矿冶有限责任公司 | Method for floatation of ilmenite in Hongge mining area in Panxi region, Sichuan province |
| CN111841883A (en) * | 2020-07-31 | 2020-10-30 | 攀钢集团矿业有限公司 | Strong magnetic separation method of ilmenite |
| 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 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495500A (en) * | 2013-09-23 | 2014-01-08 | 长沙矿冶研究院有限责任公司 | Low-energy-consumption method for separating ilmenites from tailings in iron choosing plant |
| CN103495500B (en) * | 2013-09-23 | 2016-03-30 | 长沙矿冶研究院有限责任公司 | From the method selecting low energy consumption separating ilmenite the mine tailing of ironworks |
| CN103909022A (en) * | 2014-04-07 | 2014-07-09 | 吉林大学 | Weathered-type ilmenite titanium flotation regent and titanium flotation method |
| CN103909022B (en) * | 2014-04-07 | 2017-04-05 | 吉林大学 | Weathering type titanium iron ore selects titanium floating agent and floating titanium separation method |
| CN104174486A (en) * | 2014-07-16 | 2014-12-03 | 珠海蓝天地力投资控股有限公司 | Combined magnetic separation process for selecting weathering sand ilmenite |
| CN104174486B (en) * | 2014-07-16 | 2019-10-25 | 珠海蓝天地力钛业科技有限公司 | Weathering molding sand ilmenite selected combinations magnetic separation process |
| CN104437880A (en) * | 2014-11-26 | 2015-03-25 | 四川龙蟒矿冶有限责任公司 | Method for floatation of ilmenite in Hongge mining area in Panxi region, Sichuan province |
| CN111841883A (en) * | 2020-07-31 | 2020-10-30 | 攀钢集团矿业有限公司 | Strong magnetic separation method of ilmenite |
| 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 |
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