CN102716807B - Ore dressing method for strontium ore deposit - Google Patents
Ore dressing method for strontium ore deposit Download PDFInfo
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- CN102716807B CN102716807B CN 201210203361 CN201210203361A CN102716807B CN 102716807 B CN102716807 B CN 102716807B CN 201210203361 CN201210203361 CN 201210203361 CN 201210203361 A CN201210203361 A CN 201210203361A CN 102716807 B CN102716807 B CN 102716807B
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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 sulfurore 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 processflow 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 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 it is lower that chats and fine fraction return the re-selection process operation recovery, a chats part enters concentrate, a part enters mine tailing, not only cause concentrate quality not increase, and owing to strontium in the mine tailing is of high grade, also caused the valuable strontium wasting of resources bigger.Because Chemical Manufacture is to improving constantly that ore quality requires, 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, recovery rate in ore-dressing is only about 85%, if beneficiation method is not undergone technological transformation, certainly will influence 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 at the deficiencies in the prior art, the beneficiation method in the high strontium mineral deposit of a kind of resource recovery is provided.
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 enters 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 through the fine crusher fragmentation, broken back is delivered to bolting by belt feeder, and undersize directly falls into fine ore bin and uses for ore grinding.The sieve aperture of described vibratory sieve is 18 * 24mm.
Step (2) is specially, and the fine ore in the fine ore bin is fed belt feeder by rock feeder use for ball mill, then by the grader classification; Mog is designed to-200 orders 75% (namely 75% breeze can sieve by 200 purposes), and effluent concentration is 36～40%, ore pulp volume 0.29m3/ branch.
Step (3) is specially, and the ore pulp that classification is overflowed feeds in agitator, adds butyl xanthate and foaming agent simultaneously in an agitator, 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, in No. two agitators, add the milk of lime stirring, stir 12～15 minutes, regulate pH value to 7.5～8, in No. two agitators, add water the glass stirring again, suppress gangue; At last, the ore deposit in No. two agitators is entered agitator No. three, add oleic acid and pine tar foaming agent and stir, mixing time is 19～22 minutes, allows 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, allows 40～60% good floating strontium at first enter selected; Select mine tailing to enter agitator No. four soon in strontium, add water glass, oleic acid stirring simultaneously, mixing time is 19～20 minutes, and the strontium after the stirring selects mine tailing to enter 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 enters thickener and concentrates, and enters 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 enters thickener and concentrates, and enters 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 is directly used for sale or further processing of 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
Below technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
Embodiment:The beneficiation method in strontium of the present invention mineral deposit is 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 enters 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 enter granularity in small, broken bits and is not more than 100 millimeters; And then through the fine crusher fragmentation, two PEX200 of employing in small, broken bits * 1000 jaw crushers, broken back is delivered to bolting by a B650 belt feeder, sieve aperture 18 * 24mm, undersize directly falls into fine ore bin and uses for ore grinding, and oversize uses another B650 belt feeder to turn back to two sections fine crushers.
(2) grind grading:
Arrange Ф 1000 disk feeders under the fine ore bin, the fine ore in the fine ore bin is fed two B500 belt feeders by rock feeder use for ball mill.Ball mill adopts 1 Ф 1800 * 3000 grate ball mill, then by 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 classification is overflowed feeds in agitator, adds butyl xanthate and foaming agent simultaneously in an agitator, 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 for the second time, scan for the first time and adopt 2 SF-2.8 flotation devices, scan for the second time and adopt 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, in No. two agitators, add the milk of lime stirring, stir 13.85 minutes, regulate pH value to 7.5～8, in No. two agitators, add water the glass stirring again, suppress gangue; At last, the ore deposit in No. two agitators is fed No. three agitators, add oleic acid and pine tar foaming agent and stir, mixing time is 20 minutes, allows 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, allow 50% good floating strontium at first enter the selected product of directly hanking and enter dehydration, thereby avoid a large amount of strontium vicious circle in the flotation of back, tie up the space; Select the productive rate of strontium concentrate 25% soon, select the grade of strontium concentrate soon about 74%, 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 water glass, oleic acid stirring simultaneously, mixing time is 19.6 minutes, and the strontium after the stirring selects mine tailing to enter 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 for the second time, scan for the first time and adopt 2 SF-2.8 flotation devices, scan for the second time and adopt 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 enters thickener and concentrates, and enters 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 enters thickener and concentrates, and enters 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 is directly used for sale or further processing of 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 mentioned above, 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 claims definition, can make various variations in the form and details to it.
Claims (6)
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; Be specially:
The ore pulp that classification is overflowed feeds in agitator, adds butyl xanthate and foaming agent simultaneously in an agitator, 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, in No. two agitators, add the milk of lime stirring, stir 12～15 minutes, regulate pH value to 7.5～8, in No. two agitators, add water the glass stirring again, suppress gangue; At last, the ore deposit in No. two agitators is entered agitator No. three, add oleic acid and pine tar foaming agent and stir, mixing time is 19～22 minutes, allows 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, allows 40～60% good floating strontium at first enter selected; Select mine tailing to enter agitator No. four soon in strontium, add water glass, oleic acid stirring simultaneously, mixing time is 19～20 minutes, and the strontium after the stirring selects mine tailing to enter conventional strontium flotation operation soon, and conventional strontium flotation operation comprises one roughing, twice selected and scan for three times process;
(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, adopts disintegrating machine that ore is carried out fragmentation, and raw ore enters 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 through the fine crusher fragmentation, broken back is delivered to bolting by belt feeder, and undersize directly falls into fine ore bin and uses for ore grinding.
3. the beneficiation method in strontium according to claim 2 mineral deposit, it is characterized in that: the sieve aperture of described 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 by rock feeder use for ball mill, then by the grader classification; Mog is designed to-200 orders 75%, and effluent concentration is 36～40%, flow rate of pulp 0.29m3/ branch.
5. the beneficiation method in strontium according to claim 1 mineral deposit is characterized in that:
In the step (4), the sulphur concentrate enters thickener and concentrates, and enters 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 enters thickener and concentrates, and enters 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.
6. the beneficiation method in strontium according to claim 1 mineral deposit is characterized in that:
In the step (5), concentrate is directly used for sale or further processing of 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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| CN103350032A (en) * | 2013-06-14 | 2013-10-16 | 南京金焰锶业有限公司 | Strontium ore beneficiation method |
| CN109806966B (en) * | 2019-02-21 | 2021-11-16 | 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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| CN1765519A (en) * | 2005-09-02 | 2006-05-03 | 青海金瑞矿业发展股份有限公司 | Deslim-floatation celestite inished ore process |
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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 |
| CN1765519A (en) * | 2005-09-02 | 2006-05-03 | 青海金瑞矿业发展股份有限公司 | Deslim-floatation celestite inished ore process |
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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. |