CN102716807A - Ore dressing method for strontium ore deposit - Google Patents
Ore dressing method for strontium ore deposit Download PDFInfo
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- CN102716807A CN102716807A CN2012102033617A CN201210203361A CN102716807A CN 102716807 A CN102716807 A CN 102716807A CN 2012102033617 A CN2012102033617 A CN 2012102033617A CN 201210203361 A CN201210203361 A CN 201210203361A CN 102716807 A CN102716807 A CN 102716807A
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Abstract
The invention discloses an ore dressing method for a strontium ore deposit, which is characterized in that the ore dressing method comprises following steps: (1) selected ores are subject to raw ore crushing; (2) the ores are ground and graded; (3) the flotation is conducted: sulfur dressing flotation is firstly conducted to recover pyrites, and then strontium flotation is conducted; (4) a sulfur ore concentrate and a strontium ore concentrate are condensed, filtered and dehydrated; and (5) the ore concentrates are conveyed, and tailings and wastewater are treated. As a full-flotation process flow is adopted by the process disclosed by the invention, the recovery rate of strontium ore resources is increased and lifted from the original approximate 70 percent to more than 93 percent, and the ore concentrate grade is maintained at 72 percent and reaches the prior strontium chemical production requirement.
Description
Technical field
The present invention relates to a kind of beneficiation method, relate in particular to the beneficiation method in a kind of strontium mineral deposit.
Background technology
The strontium ore deposit is a rare mineral, belongs to the national strategy resource, has been put into country " three is rare " mineral.The mineral processing circuit that existing strontium mineral deposit generally adopts picking and gravity treatment to combine; Coarse granule gravity treatment effect is fair, but that chats and fine fraction return the re-selection process operation recovery is lower, and a chats part gets into concentrate; A part gets into mine tailing; Not only cause concentrate quality not increase, and, also caused the valuable strontium wasting of resources bigger owing to strontium in the mine tailing is of high grade.Because Chemical Manufacture improves constantly what ore quality required; Be difficult to produce high-quality celestite ore according to existing full re-election technology; The level of reselection tailings has also reached ore body cutoff grade (tailings grade is about 22% at present) simultaneously, and recovery rate in ore-dressing is only about 85%, if beneficiation method is not undergone technological transformation; Certainly will influence the back production and the strontium ore resource level of comprehensive utilization of low-grade ore, reduce the length of service in mine.
Summary of the invention
Goal of the invention: the objective of the invention is to deficiency, the beneficiation method in the high strontium mineral deposit of a kind of resource recovery is provided to prior art.
Technical scheme: the beneficiation method in strontium of the present invention mineral deposit comprises the steps:
(1) milling ore is through crushing raw ore;
(2) grind grading;
(3) flotation: at first select the sulphur flotation, reclaim pyrite; Carry out the strontium flotation then;
(4) thickening filtration dehydration;
(5) processing of concentrate transportation and mine tailing, waste water.
Step (1) is specially, and raw ore gets into crude ore bin through diagrid; Rock feeder under the ore storage bin feeds boulder crusher with ore, and ore reduction to granularity is not more than 100 millimeters; And then broken through fine crusher, broken back is delivered to bolting through belt feeder, and undersize directly falls into fine ore bin and supplies ore grinding to use.The sieve aperture of said vibratory sieve is 18 * 24mm.
Step (2) is specially, and the fine ore in the fine ore bin is fed belt feeder through rock feeder supply ball mill to use, then through the grader classification; Mog is designed to-200 orders 75% (promptly 75% breeze can sieve through 200 purposes), and effluent concentration is 36～40%, ore pulp volume 0.29m3/ branch.
Step (3) is specially, and the ore pulp that the classification overflow is gone out feeds in agitator, in an agitator, adds butyl xanthate and foaming agent simultaneously, stirs 7～9 minutes laggard selected sulphur flotation operations; Select the sulphur flotation operation to comprise one roughing, twice selected and scan for three times process;
Then, will select the sulphur mine tailing to feed No. two agitators, and in No. two agitators, add milk of lime and stir, stir 12～15 minutes, regulate pH value to 7.5～8, and in No. two agitators, add waterglass again and stir, suppress gangue; At last, the ore deposit in No. two agitators is got into No. three agitators, add oleic acid and the stirring of pine tar foaming agent, mixing time is 19～22 minutes, lets strontium mineral that time enough and elaidin reaction are arranged;
The operation of strontium fast-flotation is carried out in ore deposit in No. three agitators, and the flotation time of strontium fast-flotation operation is 13～15 minutes, lets 40～60% good floating strontium at first get into selected; Select mine tailing to get into No. four agitators soon in strontium; Add waterglass, oleic acid stirring simultaneously; Mixing time is 19～20 minutes, and the strontium after the stirring selects mine tailing to get into conventional strontium flotation operation soon, and conventional strontium flotation operation comprises one roughing, twice selected and scan for three times process.
In the step (4), the sulphur concentrate gets into thickener and concentrates, and gets into ceramic filter then and filters; The thickener overflow water flows automatically in the sedimentation basin, and the sedimentation basin overflow water returns the sulphur flotation and uses; Concentrate in the sedimentation basin regularly returns thickening filtration;
The strontium concentrate gets into thickener and concentrates, and gets into ceramic filter then and filters; The thickener overflow water flows automatically in the sedimentation basin, and the sedimentation basin overflow water returns the strontium flotation and uses, and the concentrate in the sedimentation basin regularly returns thickening filtration.
In the step (5), concentrate directly supplies to sell or further processing with the loading machine entrucking;
Mine tailing concentrates through thickener earlier, filters through ceramic filter then, and is last as non-burning brick preparation raw material; The thickener overflow water flows automatically in the sedimentation basin, and the overflow water of sedimentation basin partly returns the strontium flotation and uses, and remainder is used for grind grading; Mine tailing in the sedimentation basin regularly returns thickener and filters.
Beneficial effect: 1, process using bulk flotation technological process of the present invention, improve strontium ore resources comprehensive recovery, the strontium sulfate rate of recovery rises to more than 93% by original about 70%, and concentrate grade remains on 72%, and strontium elaboration ore deposit grade reaches the requirement of present strontium chemical industry; 2, the inventive method reduces sulfur-bearing in the strontium significantly, reduces environmental pollution; 3, the inventive method is selected to have used nontoxic, harmless, pollution-free green beneficiation reagent, does not produce pollution, adds that beneficiation wastewater all recycles, and can not pollute environment, more can polluted underground water, and compliance with environmental protection requirements; 4, the inventive method is used for brickmaking with mine tailing compression dehydration back and other raw material blendings, realizes the anury discharging.
The specific embodiment
Be elaborated in the face of technical scheme of the present invention down, but protection scope of the present invention is not limited to said embodiment.
Embodiment:The beneficiation method in strontium of the present invention mineral deposit is an example with the strontium ore deposit, love Jingshan mountain that is positioned at Lishui County, and concrete beneficiation method comprises the steps:
(1) milling ore process crushing raw ore:
Two section one closed circuit flow process adopted in broken design, and raw ore gets into ore storage bin through 350 * 600 diagrids; Rock feeder under the ore storage bin feeds boulder crusher with ore, regulates the gape of boulder crusher, guarantees to get into granularity in small, broken bits and is not more than 100 millimeters; And then it is broken through fine crusher; Two PEX200 of employing in small, broken bits * 1000 jaw crushers; Broken back is delivered to bolting through a B650 belt feeder; Sieve aperture 18 * 24mm, undersize directly fall into fine ore bin and supply ore grinding to use, and oversize uses another B650 belt feeder to turn back to two sections fine crushers.
(2) grind grading:
Fine ore bin is arranged Ф 1000 disk feeders down, the fine ore in the fine ore bin is fed two B500 belt feeders through rock feeder supply ball mill to use.Ball mill adopts 1 Ф 1800 * 3000 grate ball mill, then through 1 Ф 1500 spiral classifier classification; Mog is designed to-200 orders 75%, and effluent concentration is 36～40%, ore pulp volume 0.29m3/ branch.
(3) flotation: at first select the sulphur flotation, reclaim pyrite; Carry out the strontium flotation then:
The ore pulp that the classification overflow is gone out feeds in agitator, in an agitator, adds butyl xanthate and foaming agent simultaneously, stirs 7～9 minutes laggard selected sulphur flotation operations; Select the sulphur flotation operation to comprise one roughing, twice selected and scan for three times process; Roughly select and adopt 2 SF-2.8 flotation devices; 1 SF-2.8 flotation device of selected employing for the first time; 1 SF-2.8 flotation device of selected employing is for the second time scanned for the first time and is adopted 2 SF-2.8 flotation devices, scans for the second time and adopts 2 SF-2.8 flotation devices; Scan for the third time and adopt 2 SF-2.8 flotation devices, coarse scan selects flotation time to be: 2.8 m3 * 8 * 0.8 ÷ 0.29m3/ branches=61.79 minutes;
Then, will select the sulphur mine tailing to feed No. two agitators, and in No. two agitators, add milk of lime and stir, stir 13.85 minutes, regulate pH value to 7.5～8, and in No. two agitators, add waterglass again and stir, suppress gangue; At last, the ore deposit in No. two agitators is fed No. three agitators, add oleic acid and the stirring of pine tar foaming agent, mixing time is 20 minutes, lets strontium mineral that time enough and elaidin reaction are arranged;
The operation of strontium fast-flotation is carried out in ore deposit in No. three agitators; The flotation time of strontium fast-flotation operation is 13 minutes; Let 50% good floating strontium at first get into the selected product of directly hanking and get into dehydration, thereby avoid a large amount of strontium vicious circle in the flotation of back, tie up the space; The productive rate that selects the strontium concentrate soon is 25%, and the grade of selecting the strontium concentrate soon is about 74%, and strontium selects the mine tailing productive rate soon about 60%, and concentration is about 25%, and the ore pulp amount is 0.28 ton/minute, volume 0.24m3/ branch.Select mine tailing to feed No. four agitators soon in strontium; Add waterglass, oleic acid stirring simultaneously; Mixing time is 19.6 minutes, and the strontium after the stirring selects mine tailing to get into conventional strontium flotation operation soon, and conventional strontium flotation operation comprises one roughing, twice selected and scan for three times process.Roughly select and adopt 2 SF-2.8 flotation devices; 1 SF-2.8 flotation device of selected employing for the first time; 1 SF-2.8 flotation device of selected employing is for the second time scanned for the first time and is adopted 2 SF-2.8 flotation devices, scans for the second time and adopts 2 SF-2.8 flotation devices; Scan for the third time and adopt 2 SF-2.8 flotation devices, coarse scan selects flotation time to be: 2.8 m3 * 8 * 0.8 ÷ 0.24m3/ branches=74.67 minutes.
(4) thickening filtration dehydration:
The sulphur concentrate gets into thickener and concentrates, and gets into ceramic filter then and filters; The thickener overflow water flows automatically in the sedimentation basin, and the sedimentation basin overflow water returns the sulphur flotation and uses; Concentrate in the sedimentation basin regularly returns thickener and filters;
The strontium concentrate gets into thickener and concentrates, and gets into ceramic filter then and filters; The thickener overflow water flows automatically in the sedimentation basin, and the sedimentation basin overflow water returns the strontium flotation and uses, and the concentrate in the sedimentation basin regularly returns thickener and filters.
(5) processing of concentrate transportation and mine tailing, waste water.
Concentrate directly supplies to sell or further processing with the loading machine entrucking; Mine tailing concentrates through thickener earlier, filters through ceramic filter then, and is last as non-burning brick preparation raw material; The thickener overflow water flows automatically in the sedimentation basin, and the overflow water of sedimentation basin partly returns the strontium flotation and uses, and remainder is used for grind grading; Mine tailing in the sedimentation basin regularly returns thickener and filters.
As stated, although represented and explained the present invention that with reference to specific preferred embodiment it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite that does not break away from the accompanying claims definition, can make various variations in form with on the details to it.
Claims (7)
1. the beneficiation method in a strontium mineral deposit is characterized in that comprising the steps:
(1) milling ore is through crushing raw ore;
(2) grind grading;
(3) flotation: at first select the sulphur flotation, reclaim pyrite; Carry out the strontium flotation then;
(4) thickening filtration dehydration;
(5) processing of concentrate transportation and mine tailing, waste water.
2. the beneficiation method in strontium according to claim 1 mineral deposit is characterized in that:
Step (1) is to adopt disintegrating machine that ore is carried out fragmentation, raw ore process diagrid entering crude ore bin; Rock feeder under the ore storage bin feeds boulder crusher with ore, and ore reduction to granularity is not more than 100 millimeters; And then broken through fine crusher, broken back is delivered to bolting through belt feeder, and undersize directly falls into fine ore bin and supplies ore grinding to use.
3. the beneficiation method in strontium according to claim 2 mineral deposit is characterized in that: the sieve aperture of said vibratory sieve is 18 * 24mm.
4. the beneficiation method in strontium according to claim 1 mineral deposit is characterized in that:
Step (2) is the fine ore in the fine ore bin to be fed belt feeder through rock feeder supply ball mill to use, then through the grader classification; Mog is designed to-200 orders 75%, and effluent concentration is 36～40%, ore pulp volume 0.29m3/ branch.
5. the beneficiation method in strontium according to claim 1 mineral deposit is characterized in that:
Step (3) does, the ore pulp that the classification overflow is gone out feeds in agitator, in an agitator, adds butyl xanthate and foaming agent simultaneously, stirs 7～9 minutes laggard selected sulphur flotation operations; Select the sulphur flotation operation to comprise one roughing, twice selected and scan for three times process;
Then, will select the sulphur mine tailing to feed No. two agitators, and in No. two agitators, add milk of lime and stir, stir 12～15 minutes, regulate pH value to 7.5～8, and in No. two agitators, add waterglass again and stir, suppress gangue; At last, the ore deposit in No. two agitators is got into No. three agitators, add oleic acid and the stirring of pine tar foaming agent, mixing time is 19～22 minutes, lets strontium mineral that time enough and elaidin reaction are arranged;
The operation of strontium fast-flotation is carried out in ore deposit in No. three agitators, and the flotation time of strontium fast-flotation operation is 13～15 minutes, lets 40～60% good floating strontium at first get into selected; Select mine tailing to get into No. four agitators soon in strontium; Add waterglass, oleic acid stirring simultaneously; Mixing time is 19～20 minutes, and the strontium after the stirring selects mine tailing to get into conventional strontium flotation operation soon, and conventional strontium flotation operation comprises one roughing, twice selected and scan for three times process.
6. the beneficiation method in strontium according to claim 1 mineral deposit is characterized in that:
In the step (4), the sulphur concentrate gets into thickener and concentrates, and gets into ceramic filter then and filters; The thickener overflow water flows automatically in the sedimentation basin, and the sedimentation basin overflow water returns the sulphur flotation and uses; Concentrate in the sedimentation basin regularly returns thickener and filters;
The strontium concentrate gets into thickener and concentrates, and gets into ceramic filter then and filters; The thickener overflow water flows automatically in the sedimentation basin, and the sedimentation basin overflow water returns the strontium flotation and uses, and the concentrate in the sedimentation basin regularly returns thickener and filters.
7. the beneficiation method in strontium according to claim 1 mineral deposit is characterized in that:
In the step (5), concentrate directly supplies to sell or further processing with the loading machine entrucking;
Mine tailing concentrates through thickener earlier, filters through ceramic filter then, and is last as non-burning brick preparation raw material; The thickener overflow water flows automatically in the sedimentation basin, and the overflow water of sedimentation basin partly returns the strontium flotation and uses, and remainder is used for grind grading; Mine tailing in the sedimentation basin regularly returns thickener and filters.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103350032A (en) * | 2013-06-14 | 2013-10-16 | 南京金焰锶业有限公司 | Strontium ore beneficiation method |
| CN109806966A (en) * | 2019-02-21 | 2019-05-28 | 中国地质科学院矿产综合利用研究所 | Beneficiation method for comprehensively recovering strontium minerals from rare earth tailings |
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| CN101157066A (en) * | 2007-11-13 | 2008-04-09 | 中蓝连海设计研究院 | A milling enriched technics for celestine ore |
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| US4043902A (en) * | 1975-06-06 | 1977-08-23 | American Cyanamid Company | Tri-carboxylated and tetra-carboxylated fatty acid aspartates as flotation collectors |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103350032A (en) * | 2013-06-14 | 2013-10-16 | 南京金焰锶业有限公司 | Strontium ore beneficiation method |
| CN109806966A (en) * | 2019-02-21 | 2019-05-28 | 中国地质科学院矿产综合利用研究所 | Beneficiation method for comprehensively recovering strontium minerals from rare earth tailings |
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Effective date of registration: 20160330 Address after: Dongping town Lishui County Nanjing city Jiangsu province 211211 Qunli love Jingshan Hill Patentee after: Qiu Weinong Address before: Dongping town Lishui County Nanjing city Jiangsu province 211211 Qunli love Jingshan Hill Patentee before: NANJING JINYAN STRONTIUM INDUSTRY Co.,Ltd. |
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Address after: 211211 Qunli Aijingshan, Lishui Economic Development Zone, Nanjing, Jiangsu Province Patentee after: NANJING JINYAN STRONTIUM INDUSTRY Co.,Ltd. Address before: 211211 Qunli Aijingshan, Dongping Town, Lishui County, Nanjing City, Jiangsu Province Patentee before: NANJING JINYAN STRONTIUM INDUSTRY Co.,Ltd. |