CN100435966C - Method for separating non-magnetic iron mine by using property of specific gravity - Google Patents
Method for separating non-magnetic iron mine by using property of specific gravity Download PDFInfo
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- CN100435966C CN100435966C CNB2006101620134A CN200610162013A CN100435966C CN 100435966 C CN100435966 C CN 100435966C CN B2006101620134 A CNB2006101620134 A CN B2006101620134A CN 200610162013 A CN200610162013 A CN 200610162013A CN 100435966 C CN100435966 C CN 100435966C
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Abstract
The invention relates to a method for selecting non-magnetic mine, via weight character, wherein it comprises breaking the mine, ball grinding, classifying, and selecting. It uses multistage grinding, fine screen, classifying, and screw groove. When the former mine is 40% (Fe), it can obtain the iron mine more than 63% (TFe), while the yield is48%, and the iron recycle rate is 76%.
Description
Technical field
A kind of method of utilizing proportion character to sort non-magnetic iron relates to a kind of beneficiation method of non-magnetic iron, is applicable to sorting of non-magnetic iron and vignite.
Technical background
The method that sorts main employing magnetic separation of iron ore, for weak magnetic or non-magnetic iron, the general method that adopts high intensity magnetic separation or spiral chute gravity treatment, but it is thick that common gravity separation method has only the iron mineral disseminated grain size, the simple iron ore of ore composition is just more effective, and is thin for disseminated grain size, the iron ore of ore composition complexity, exist the rate of recovery low, the problem that concentrate grade is low.
There are following characteristics in the non-magnetic iron of Lingyuan: component complexity, the existing way of iron mineral also accompany a part of Armco magnetic iron seldom based on red iron, sparring, brown iron; Remove in addition, the iron mineral disseminated grain size is thin, only reach about 0.043mm, most of iron mineral just dissociates, not only can't adopt conventional magnetic method to sort and obtain qualified iron ore concentrate, adopt conventional gravity separation method also to be difficult to obtain qualified iron ore concentrate, so all the time, the non-magnetic iron of Lingyuan fails effectively to be exploited and sort always, has caused a large amount of wastes of resource.
Summary of the invention
Purpose of the present invention is exactly the deficiency that the above-mentioned prior art of pin exists, the iron ore of the difficulty that provides that a kind of disseminated grain size that can effectively sort similar Lingyuan is thin, ore composition is complicated, iron mineral dissociates effectively improves the low proportion character of utilizing of yield and concentrate grade and sorts the method for Lingyuan non-magnetic iron.
The objective of the invention is to be achieved through the following technical solutions.
A kind of method of utilizing proportion character to sort non-magnetic iron is characterized in that its ore dressing process is that raw ore is carried out the spiral chute gravity treatment behind two sections fragmentations, two sections ball millings, fine grading.
A kind of method of utilizing proportion character to sort non-magnetic iron of the present invention, the ore pulp weight percent concentration when it is characterized in that its gravity treatment is 35%-45%, granularmetric composition accounts for more than 85% for-0.074mm.
A kind of method of utilizing proportion character to sort non-magnetic iron of the present invention, it is characterized in that reuse adoption process be adopt spiral chute form one thick, an essence, two is swept carry out gravity preparation other; That the concentrate that ore pulp enters and roughly selects, roughly selects enters is selected, mine tailing enters and scans, chats returns two sections ball millings and regrinds, selected concentrate returns as qualified iron ore concentrate, chats directly that two sections ball millings are regrinded, mine tailing enters one section and scans, one section concentrate of scanning enters selected, the one section chats scanned and mine tailing enter two sections and scan, two sections concentrate of scanning return two sections ball millings and regrind, and mine tailing is directly thrown and removed.
A kind of method of utilizing proportion character to sort non-magnetic iron of the present invention, the helicla flute diameter that it is characterized in that roughly selecting in the reuse adoption process employing is 1500mm, and its pitch to diameter ratio is 0.54, and the sectional curve cross dip is 9 °; The spiral fluted diameter of selected employing is 1500mm, and its pitch to diameter ratio 0.60, sectional curve cross dip are 10 °; The helicla flute diameter of scanning employing is 1500mm, and pitch to diameter ratio is 0.45, and the sectional curve cross dip is 8.5 °.
Method of the present invention, form the iron ore gravity that a thick essence two sweeps by spiral chute and sort flow process, ball milling is roughly selected spiral chute after the raw ore that granularity is qualified after the fine screening classification enters, the concentrate of roughly selecting spiral chute enters selected spiral chute, mine tailing enters scans spiral chute, chats returns ball milling and regrinds, selected concentrate is directly as qualified iron ore concentrate, chats returns ball milling and regrinds, mine tailing enters one section and scans spiral chute, one section concentrate of scanning enters selected, the one section chats scanned and mine tailing enter two sections and scan spiral chute, two sections concentrate of scanning return ball milling and regrind, and mine tailing is directly thrown and removed.
Method of the present invention, non magnetic iron (comprising red iron, sparring, brown iron) ore deposit at the Lingyuan, can't adopt conventional magnetic separation and gravity separation method ore dressing to obtain qualified iron ore concentrate problem, utilize the proportion character of mineral, adopt the spiral chute of multistage grinding, fine screening classification, special parameter collocation to form special gravity treatment flow process, extract qualified iron ore concentrate, and reach high metal recovery rate.When head grade is 40% (TFe) left and right sides, can obtain more than the grade 63% (TFe) the qualified iron ore concentrate of productive rate 48%, the ferrous metal rate of recovery about 76%.
Description of drawings
Fig. 1 is the process flow diagram of the inventive method.
The specific embodiment
A kind of method of utilizing proportion character to sort non-magnetic iron, its ore dressing process are that raw ore is carried out gravity treatment behind two sections fragmentations, two sections ball millings, fine grading.Ore pulp weight percent concentration during gravity treatment is 35%-45%, and granularmetric composition accounts for more than 85% for-0.074mm.Reuse adoption process be adopt spiral chute form one thick, an essence, two is swept carry out gravity preparation other; That the concentrate that ore pulp enters and roughly selects, roughly selects enters is selected, mine tailing enters and scans, chats returns two sections ball millings and regrinds, selected concentrate returns as qualified iron ore concentrate, chats directly that two sections ball millings are regrinded, mine tailing enters one section and scans, one section concentrate of scanning enters selected, the one section chats scanned and mine tailing enter two sections and scan, two sections concentrate of scanning return two sections ball millings and regrind, and mine tailing is directly thrown and removed.The helicla flute diameter of roughly selecting employing in the reuse adoption process is 1500mm, and its pitch to diameter ratio is 0.54, and the sectional curve cross dip is 9 °; The spiral fluted diameter of selected employing is 1500mm, and its pitch to diameter ratio 0.60, sectional curve cross dip are 10 °; The helicla flute diameter of scanning employing is 1500mm, and pitch to diameter ratio is 0.45, and the sectional curve cross dip is 8.5 °.
Embodiment 1
With grade is the Lingyuan iron raw ore of 40% (TFe), behind two sections fragmentations, two sections ball millings, fine grading, being mixed with weight percent concentration is 35%, granularmetric composition accounts for 85% ore pulp for-0.074mm, and the employing diameter is that 1500mm, its pitch to diameter ratio are 0.54, the sectional curve cross dip is that 9 ° of helicla flutes are roughly selected; Be that 1500mm, its pitch to diameter ratio 0.60, sectional curve cross dip are that 10 ° helicla flute carries out selected again with the concentrate diameter of roughly selecting; Selected concentrate is directly as qualified iron ore concentrate; Selected chats returns two sections ball millings and regrinds; Be that 1500mm, its pitch to diameter ratio 0.45, sectional curve cross dip are that 8.5 ° helicla flute carries out one section and scans again with the mine tailing diameter of roughly selecting; It is selected that one section concentrate of scanning enters, and is that 1500mm, its pitch to diameter ratio 0.45, sectional curve cross dip are that 8.5 ° helicla flute carries out two sections and scans again with one section chats of scanning and mine tailing diameter; Two sections concentrate of scanning return two sections ball millings and regrind, and mine tailing is directly thrown and removed.The iron concentrate grade that obtains is 63% (TFe), and productive rate is 48%, and the ferrous metal rate of recovery reaches 76%.
Embodiment 2
Other condition is with example 1, and Lingyuan iron head grade is 45% (TFe), and the ore pulp weight percent concentration of preparation is 45%, and granularmetric composition accounts for 86% ore pulp for-0.074mm; That obtain concentrate is grade 60% (TFe), and productive rate is 50%, and the ferrous metal rate of recovery is 80%.
Claims (4)
1. method of utilizing proportion character to sort non-magnetic iron is characterized in that its ore dressing process is that raw ore is carried out the spiral chute gravity treatment behind two sections fragmentations, two sections ball millings, fine grading.
2. a kind of method of utilizing proportion character to sort non-magnetic iron according to claim 1, the ore pulp weight percent concentration when it is characterized in that its gravity treatment is 35%-45%, granularmetric composition accounts for more than 85% for-0.074mm.
3. a kind of method of utilizing proportion character to sort non-magnetic iron according to claim 1, it is characterized in that reuse adoption process be adopt spiral chute form one thick, an essence, two is swept carry out gravity preparation other; That the concentrate that ore pulp enters and roughly selects, roughly selects enters is selected, mine tailing enters and scans, chats returns two sections ball millings and regrinds, selected concentrate returns as qualified iron ore concentrate, chats directly that two sections ball millings are regrinded, mine tailing enters one section and scans, one section concentrate of scanning enters selected, the one section chats scanned and mine tailing enter two sections and scan, two sections concentrate of scanning return two sections ball millings and regrind, and mine tailing is directly thrown and removed.
4. a kind of method of utilizing proportion character to sort non-magnetic iron according to claim 1, the helicla flute diameter that it is characterized in that roughly selecting in the reuse adoption process employing is 1500mm, and its pitch to diameter ratio is 0.54, and the sectional curve cross dip is 9 °; The spiral fluted diameter of selected employing is 1500mm, and its pitch to diameter ratio 0.60, sectional curve cross dip are 10 °; The helicla flute diameter of scanning employing is 1500mm, and pitch to diameter ratio is 0.45, and the sectional curve cross dip is 8.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101620134A CN100435966C (en) | 2006-12-08 | 2006-12-08 | Method for separating non-magnetic iron mine by using property of specific gravity |
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| CNB2006101620134A CN100435966C (en) | 2006-12-08 | 2006-12-08 | Method for separating non-magnetic iron mine by using property of specific gravity |
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| CN100435966C true CN100435966C (en) | 2008-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927236B (en) * | 2009-06-24 | 2012-05-23 | 鞍钢集团矿业公司 | Lean hematite technology combining dressing-fine screening and shaking table gravity separation |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468330B (en) * | 2007-12-24 | 2012-06-06 | 鞍钢集团矿业公司 | Technique for processing mixed type iron ore |
| CN101708481B (en) * | 2008-10-31 | 2012-09-12 | 鞍钢集团矿业公司 | Additional grading technology for spiral chute roughing tailings |
| CN102259059A (en) * | 2010-11-05 | 2011-11-30 | 鞍钢集团矿业公司 | Method for recycling iron concentrates from tailings in stage grinding, thickness sorting and gravity-magnetism-floatation procedures |
| CN104923386B (en) * | 2015-06-12 | 2017-06-06 | 鞍钢集团矿业有限公司 | The pre-selection of fine grain teeth cloth composite ore coarse grain, magnetic-weight sorting process |
| CN105478232B (en) * | 2015-11-24 | 2018-01-23 | 广州有色金属研究院 | A kind of beneficiation method from graphite mould navajoite enrichment vanadic anhydride |
| CN107626436B (en) * | 2017-09-21 | 2020-08-14 | 攀钢集团矿业有限公司 | Ilmenite sorting system and method |
| CN108970800B (en) * | 2018-06-28 | 2021-05-04 | 马钢集团设计研究院有限责任公司 | Beneficiation process for reducing content of silicon dioxide in iron ore concentrate |
| CN111545339B (en) * | 2020-05-13 | 2022-09-02 | 江西理工大学 | Device and method for separating and recovering chromium from laterite-nickel ore |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3883421A (en) * | 1972-09-12 | 1975-05-13 | Dale Emerson Cutting | Measurement of oxidation reduction potential in ore beneficiation |
| CN1057277A (en) * | 1990-06-11 | 1991-12-25 | 宣化县氧化铁颜料厂 | A kind of production method of ferric oxide red colorant |
| CN1785527A (en) * | 2004-12-12 | 2006-06-14 | 安阳钢铁集团有限责任公司 | Oxidation ore classification technology |
-
2006
- 2006-12-08 CN CNB2006101620134A patent/CN100435966C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3883421A (en) * | 1972-09-12 | 1975-05-13 | Dale Emerson Cutting | Measurement of oxidation reduction potential in ore beneficiation |
| CN1057277A (en) * | 1990-06-11 | 1991-12-25 | 宣化县氧化铁颜料厂 | A kind of production method of ferric oxide red colorant |
| CN1785527A (en) * | 2004-12-12 | 2006-06-14 | 安阳钢铁集团有限责任公司 | Oxidation ore classification technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927236B (en) * | 2009-06-24 | 2012-05-23 | 鞍钢集团矿业公司 | Lean hematite technology combining dressing-fine screening and shaking table gravity separation |
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| CN1962071A (en) | 2007-05-16 |
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