CN105750073A - Method for recycling multiple varieties of low-grade valuable elements in tungsten tailings - Google Patents
Method for recycling multiple varieties of low-grade valuable elements in tungsten tailings Download PDFInfo
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- CN105750073A CN105750073A CN201610149483.0A CN201610149483A CN105750073A CN 105750073 A CN105750073 A CN 105750073A CN 201610149483 A CN201610149483 A CN 201610149483A CN 105750073 A CN105750073 A CN 105750073A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
Abstract
The invention discloses a method for recycling multiple varieties of low-grade valuable elements in tungsten tailings. The method is mainly used for recycling low-grade metals of tungsten, molybdenum and tin in the tailings. According to the invention, a method of combining gravity concentration and flotation is used, and the whole recycling process is divided into four stages, wherein in the first stage, a gravity concentration method is used to select tungsten concentrates; in the second stage and the third stage, flotation reagents of sodium carbonate, sodium hexametaphosphate, pine wine oil, oleic acid, slaked lime, xanthate and the like are used to carry out flotation scavenging and repeated flotation selection to obtain molybdenum concentrates; in the fourth stage, toluene arsonic acid is added and multi-level selection is performed to obtain tin concentrate products. According to the invention, the pH value of pulp is reasonably controlled, the ratio of flotation agents in each stage is controlled, and valuable metal elements in the tailings are recycled step by step to improve the quality and recovery ratio of the concentrates.
Description
Technical field
The present invention relates to the comprehensive utilization of a kind of resource, be specifically related to a kind of method that the low-grade valuable element of multi items in tungsten tailings is reclaimed.
Background technology
Mineral resources are a kind of non-renewable resources, along with social development to mineral resources ever increasing need and people continually developing mineral resources, mineral resources are day by day exhausted.Meanwhile, mine tailing simply piles up harm environment caused with backfill, makes people recognize the recycling significance to Sustainable Socioeconomic Development of resource of tailings.A host of facts show, mill tailings is as a kind of secondary resource, no matter from the needs of social development, or from environmental conservation aspect, it is necessary to comprehensively utilized.
Tungsten mines all adopts gravity ore dressing method to carry out reclaiming tungsten ore, especially some small mines mostly at present, and after tungsten ore gravity primary election, mine tailing all dumps, and causes most accompanying element in mine tailing all not have recovery, causes the waste of resource.Traditional resource of tailings reclaims and mostly simply adopts a kind of ore dressing mode to reclaim a kind of element in mine tailing, still has other valuable metal element not recycle.The inventive method adopts gravity separation to combine with flotation mode, whole removal process is divided into four-stage, reasonably control pulp PH value, by the burden control to each stage flotation agent, the low-grade valuable element of multi items in tungsten tailings is reclaimed, the method mainly tailings tungsten, stannum, three kinds of metallic elements of molybdenum recycled.
Summary of the invention
(1) to solve the technical problem that
The present invention is in order to overcome tradition mining tailing only with single ore dressing mode, cause recovery valuable metal element in mine tailing single, other valuable element runs off, the shortcoming causing the wasting of resources, the technical problem to be solved in the present invention is to provide and a kind of adopts gravity separation to combine with flotation mode, whole removal process is divided into four-stage, reasonably control pulp PH value, by the burden control to each stage flotation agent, the low-grade valuable element of multi items in tungsten tailings is reclaimed, the method mainly tailings tungsten, stannum, three kinds of metallic elements of molybdenum recycled.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides the method that the low-grade valuable element of multi items in tungsten tailings is reclaimed by such a, be mainly recovery mine tailing middle-low grade tungsten, molybdenum, tin metal method, specifically comprise the following steps that
(1) the first stage: Tungsten tailing is transported in Buffer Pool, once sizes mixing；Bottom Buffer Pool, connect a pipeline, enter shaking table and scan；The concentrate that shaking table is scanned is final tungsten concentrate, and the chats that shaking table is scanned carries out dense；
(2), by step mine tailing pre-classification after (1) dense, classification coarse grain product returns grinding operation, and classification qualified products enter second stage；
(3) second stage: step (1) middle classification qualified products are carried out secondary and sizes mixing, add regulator sodium carbonate 1000～1500g/t, inhibitor sodium hexameta phosphate 600～1200g/t, foaming agent terpenic oil 200～700g/t, collecting agent oleic acid 500～750g/t, Calx 600～750g/t, pH values of pulp controls 10.5～12.0, it is thus achieved that roughly select foam and rougher tailings；Roughly selecting foam is that second stage sorts concentrate, and rougher tailings is directly abandoned, and second stage sorts concentrate and enters the phase III；
(4) the phase III: second stage is sorted concentrate and carries out three times and size mixing, add sodium carbonate 100～800g/t, xanthate 200～750g/t, waterglass 300～1300g/t, collecting agent oleic acid 0～100g/t, pH values of pulp controls 8.5～10.0, through 1～3 grade selected and 1 grade scan, selected obtaining final products molybdenum concntrate, scan foam and return upper level flotation operation, the chats after scanning enters fourth stage；
(5) fourth stage: will sort chats the phase III and carry out four times and size mixing, adds toluene arsonic acid 50～300g/t, and pH values of pulp controls 7.0～8.5, selected through 2～4 grades, and chats returns upper level flotation operation respectively, it is thus achieved that Tin concentrate.
Preferably, described tungsten tailings is the tungsten tailings after raw ore gravity treatment, stanniferous grade 0.2～0.8%, containing molybdenum grade 10～20%, containing Tungstic anhydride. 0.05～0.1%.
Preferably, step (2) in, partition size is 0.048mm, granularity less than 0.048mm be classification qualified products enter second stage, granularity more than 0.048mm be sand return return grinding operation.
Preferably, step (3) with step (4) in, sodium carbonate liquor quality is 5% than concentration.
Preferably, step (4) in, water glass solution collocation method: be waterglass and the water of 1:3～4:6 in mass ratio, stir 20min, make water glass solution.
(3) beneficial effect
The inventive method adopts gravity separation to combine with flotation mode, whole removal process is divided into four-stage, reasonably control pulp PH value, by the burden control to each stage flotation agent, the low-grade valuable element of multi items in tungsten tailings is reclaimed, the method mainly tailings tungsten, stannum, three kinds of metallic elements of molybdenum recycled.Each recovery concentrate quality can be improved, improve the response rate.
Accompanying drawing explanation
Fig. 1 is tungsten tailings valuable element synthetical recovery flow chart.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
Raw material is selected from a certain tungsten mines Tailings Dam in south, Jiangxi, and wherein Tungstic anhydride. grade 0.08%, stannum grade 0.2%, molybdenum grade 12%, carbonate mineral content is 9.41%, and all the other are substantial amounts of silicates mineral and least a portion of barite, apatite etc..
Flotation step and regime of agent are as follows: be (1) transported in Buffer Pool by Tungsten tailing, once size mixing；Bottom Buffer Pool, connect a pipeline, enter shaking table and scan；The concentrate that shaking table is scanned is final tungsten concentrate, and the chats that shaking table is scanned carries out dense.
By above-mentioned dense after mine tailing through pre-classification, classification coarse grain product returns grinding operation, classification qualified products are sized mixing through secondary, enter second stage ore dressing, roughly select addition sodium carbonate 1000g/t, inhibitor sodium hexameta phosphate 800g/t, foaming agent terpenic oil 200g/t, Calx 600g/t, collecting agent oleic acid 500g/t, roughly select, it is thus achieved that roughly select foam and rougher tailings；Rougher tailings is directly abandoned, and roughly selects foam and enters the phase III.
(3) roughly select foam through pre-classification, classification coarse grain product returns grinding operation, classification qualified products are sized mixing through three times, add sodium carbonate 200g/t, xanthate 350g/t, waterglass 800g/t carries out primary cleaning and obtains product and primary cleaning chats in primary cleaning foam and primary cleaner, and primary cleaning middling recurrence scans operation, and the chats after scanning enters fourth stage；Primary cleaning foam is through sizing mixing, adding collecting agent oleic acid 50g/t, waterglass 400g/t carries out recleaning, it is thus achieved that recleaning foam and product and recleaning chats in recleaning groove, recleaning middling recurrence primary cleaning operation, recleaning foam is concentrated obtains molybdenum concntrate.
(4) the chats that the phase III scans carries out fourth stage triple cleaning through four interpolation toluene arsonic acid 200g/t that size mixing, obtain product and triple cleaning chats in triple cleaning froth pulp and triple cleaning groove, the recleaning operation of triple cleaning middling recurrence phase III, triple cleaning foam through size mixing interpolation toluene arsonic acid 150g/t enter four times selected, obtain the selected chats of product that is four time in four selected froth pulps and four cleaner cells, four selected middling recurrence triple cleaning operations, four selected froth pulps through the interpolation toluene arsonic acid 60g/t that sizes mixing enter five times selected, obtain the selected chats of product that is five time in five selected foams and five cleaner cells, four the selected operations of five selected middling recurrence, five times concentrated filtration of selected foam obtains Tin concentrate.
Obtaining tungsten concentrate grade is 8%, and the response rate is 50.2%；Molybdenum concentrate grade is 54.5%, and the response rate is 65%；Tin concentrate grade is 48%, and the response rate is 67.4%.
Embodiment 2
Raw material is selected from a certain tungsten mines Tailings Dam in south, Jiangxi, and wherein Tungstic anhydride. grade 0.1%, stannum grade 0.8%, molybdenum grade 20%, carbonate mineral content is 6.41%, and all the other are substantial amounts of silicates mineral and least a portion of barite, apatite etc..
Flotation step and regime of agent are as follows: be (1) transported in Buffer Pool by Tungsten tailing, once size mixing；Bottom Buffer Pool, connect a pipeline, enter shaking table and scan；The concentrate that shaking table is scanned is final tungsten concentrate, and the chats that shaking table is scanned carries out dense.
By above-mentioned dense after mine tailing through pre-classification, classification coarse grain product returns grinding operation, classification qualified products are sized mixing through secondary, enter second stage ore dressing, roughly select addition sodium carbonate 1200g/t, inhibitor sodium hexameta phosphate 1200g/t, foaming agent terpenic oil 300g/t, collecting agent oleic acid 500g/t, Calx 750g/t, roughly select, it is thus achieved that roughly select foam and rougher tailings；Rougher tailings is directly abandoned, and roughly selects foam and enters the phase III.
(3) roughly select foam through pre-classification, classification coarse grain product returns grinding operation, classification qualified products carry out three times and size mixing, add sodium carbonate 500g/t, xanthate 750g/t, waterglass 1200g/t, collecting agent oleic acid 100g/t, carrying out primary cleaning and obtain product and primary cleaning chats in primary cleaning foam and primary cleaner, primary cleaning middling recurrence scans operation, and the chats after scanning enters fourth stage；Primary cleaning foam is through sizing mixing, add collecting agent oleic acid 50g/t, waterglass 900g/t carries out recleaning, obtaining product and recleaning chats in recleaning foam and recleaning groove, recleaning middling recurrence primary cleaning operation, recleaning foam is through the interpolation collecting agent oleic acid 50g/t that sizes mixing, waterglass 700g/t, carry out triple cleaning, it is thus achieved that triple cleaning foam, concentrated acquisition molybdenum concntrate.
null(4) it is selected that the chats that the phase III scans carries out phase III four times through the interpolation toluene arsonic acid 300g/t that sizes mixing for four times，Obtain the selected chats of product that is four time in four selected froth pulps and four cleaner cells，Four selected middling recurrence phase III triple cleaning operations，Four selected foams through the interpolation toluene arsonic acid 200g/t that sizes mixing enter five times selected，Obtain the selected chats of product that is five time in five selected froth pulps and five cleaner cells，Four the selected operations of five selected middling recurrence，Five selected froth pulps through the interpolation toluene arsonic acid 120g/t that sizes mixing enter six times selected，Obtain the selected chats of product that is six time in six selected foams and six cleaner cells，Five the selected operations of six selected middling recurrence，Six selected foams are through the interpolation toluene arsonic acid 70g/t that sizes mixing，Carry out the selected chats of product that is seven time in seven selected foams of seven selected acquisitions and seven cleaner cells，Six the selected operations of seven selected middling recurrence，Seven times concentrated filtration of selected froth pulp obtains Tin concentrate.
Obtaining tungsten concentrate grade is 7.8%, and the response rate is 49.3%；Molybdenum concentrate grade is 55.6%, and the response rate is 64.2%；Tin concentrate grade is 49.8%, and the response rate is 63.5%.
Embodiment 3
Raw material is selected from a certain tungsten mines Tailings Dam in south, Jiangxi, and wherein Tungstic anhydride. grade 0.075%, stannum grade 0.5%, molybdenum grade 15%, carbonate mineral content is 5.82%, and all the other are substantial amounts of silicates mineral and least a portion of barite, apatite etc..
Flotation step and regime of agent are as follows: be (1) transported in Buffer Pool by Tungsten tailing, once size mixing；Bottom Buffer Pool, connect a pipeline, enter shaking table and scan；The concentrate that shaking table is scanned is final tungsten concentrate, and the chats that shaking table is scanned carries out dense.
By above-mentioned dense after mine tailing through pre-classification, classification coarse grain product returns grinding operation, classification qualified products are sized mixing through secondary, enter second stage flotation, roughly select addition sodium carbonate 1200g/t, it is suppressed that agent sodium hexameta phosphate 800g/t, foaming agent terpenic oil 500g/t, collecting agent oleic acid 650g/t, Calx 650g/t roughly selects, it is thus achieved that roughly select foam and rougher tailings；Rougher tailings is directly abandoned, and roughly selects foam and enters the phase III.
(3) roughly select foam through pre-classification, classification coarse grain product returns grinding operation, classification qualified products carry out three times and size mixing, add sodium carbonate 500g/t, xanthate 550g/t, waterglass 900g/t, collecting agent oleic acid 50g/t, carrying out primary cleaning and obtain product and primary cleaning chats in primary cleaning foam and primary cleaner, primary cleaning middling recurrence scans operation, and the chats after scanning enters fourth stage；Primary cleaning foam is through sizing mixing, adding collecting agent oleic acid 50g/t, waterglass 700g/t carries out recleaning, it is thus achieved that recleaning foam and product and recleaning chats in recleaning groove, recleaning middling recurrence primary cleaning operation, the concentrated acquisition molybdenum concntrate of recleaning foam.
(4) the chats that the phase III scans carries out phase III triple cleaning through four interpolation toluene arsonic acid 250g/t that size mixing, obtain product and triple cleaning chats in triple cleaning froth pulp and triple cleaning groove, triple cleaning middling recurrence second stage recleaning operation, triple cleaning foam through size mixing interpolation toluene arsonic acid 130g/t enter four times selected, obtain the selected chats of product that is four time in four selected froth pulps and four cleaner cells, four selected middling recurrence triple cleaning operations, four selected froth pulps through the interpolation toluene arsonic acid 70g/t that sizes mixing enter five times selected, obtain the selected chats of product that is five time in five selected foams and five cleaner cells, four the selected operations of five selected middling recurrence, five times concentrated filtration of selected foam obtains Tin concentrate.
Obtaining tungsten concentrate grade is 7.9%, and the response rate is 51.3%；Molybdenum concentrate grade is 55.8%, and the response rate is 63.8%；Tin concentrate grade is 48.5%, and the response rate is 64.2%.
In above-described embodiment 1-3:
In priority rating ore grinding step, partition size is 0.048mm, and granularity is that classification qualified products enter the first stage less than 0.048mm, and granularity is that sand return returns ore grinding more than 0.048mm.
Sodium carbonate liquor quality is 5% than concentration.
Water glass solution collocation method: be waterglass and the water of 1:3～4:6 in mass ratio, stirs 20min, makes water glass solution
Embodiment described above only have expressed the preferred embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation, improvement and replacement, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (5)
1. the method low-grade valuable element of multi items in tungsten tailings reclaimed, is mainly recovery mine tailing middle-low grade tungsten, molybdenum, tin metal method, it is characterised in that described method step is:
(1) first stage: Tungsten tailing is transported in Buffer Pool, once sizes mixing；Bottom Buffer Pool, connect a pipeline, enter shaking table and scan；The concentrate that shaking table is scanned is final tungsten concentrate, and the chats that shaking table is scanned carries out dense；
(2) by step mine tailing pre-classification after (1) dense, classification coarse grain product returns grinding operation, and classification qualified products enter second stage；
(3) second stage: step (1) middle classification qualified products are carried out secondary and sizes mixing, add regulator sodium carbonate 1000～1500g/t, inhibitor sodium hexameta phosphate 600～1200g/t, foaming agent terpenic oil 200～700g/t, collecting agent oleic acid 500～750g/t, Calx 600～750g/t, pH values of pulp controls 10.5～12.0, it is thus achieved that roughly select foam and rougher tailings；Roughly selecting foam is that second stage sorts concentrate, and rougher tailings is directly abandoned, and second stage sorts concentrate and enters the phase III；
(4) phase III: second stage is sorted concentrate and carries out three times and size mixing, add sodium carbonate 100～800g/t, xanthate 200～750g/t, waterglass 300～1300g/t, collecting agent oleic acid 0～100g/t, pH values of pulp controls 8.5～10.0, through 1～3 grade selected and 1 grade scan, selected obtaining final products molybdenum concntrate, scan foam and return upper level flotation operation, the chats after scanning enters fourth stage；
(5) fourth stage: will sort chats the phase III and carry out four times and size mixing, adds toluene arsonic acid 50～300g/t, and pH values of pulp controls 7.0～8.5, selected through 2～4 grades, and chats returns upper level flotation operation respectively, it is thus achieved that Tin concentrate.
2. the technique that the low-grade valuable element of multi items in tungsten tailings is reclaimed according to claim 1, it is characterized in that, described tungsten tailings is the tungsten tailings after raw ore gravity treatment, stanniferous grade 0.2～0.8%, containing molybdenum grade 10～20%, containing Tungstic anhydride. 0.05～0.1%.
3. the technique that the low-grade valuable element of multi items in tungsten tailings is reclaimed according to claim 1, it is characterized in that, step (2) in, partition size is 0.048mm, granularity is that classification qualified products enter second stage less than 0.048mm, and granularity is that sand return returns grinding operation more than 0.048mm.
4. the technique that the low-grade valuable element of multi items in tungsten tailings is reclaimed according to claim 1, it is characterised in that step (3) with step (4) in, sodium carbonate liquor quality is 5% than concentration.
5. the technique that the low-grade valuable element of multi items in tungsten tailings is reclaimed according to claim 1, it is characterized in that, step (4) in, water glass solution collocation method: be waterglass and the water of 1:3～4:6 in mass ratio, stirring 20min, makes water glass solution.
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Cited By (3)
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| CN106269170A (en) * | 2016-09-19 | 2017-01-04 | 中南大学 | A kind of by the method for valuable metal in gravity treatment kerosene aggregative flotation process integration recovery waste refractory materials |
| CN106390537A (en) * | 2016-10-25 | 2017-02-15 | 洛阳栾川钼业集团股份有限公司 | Method for recovering fine-particle-grade scheelite in two-stage thickening manner |
| CN112718235A (en) * | 2020-11-16 | 2021-04-30 | 内蒙古维拉斯托矿业有限公司 | Tungsten-tin comprehensive recovery combined reselection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106269170A (en) * | 2016-09-19 | 2017-01-04 | 中南大学 | A kind of by the method for valuable metal in gravity treatment kerosene aggregative flotation process integration recovery waste refractory materials |
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| CN112718235B (en) * | 2020-11-16 | 2023-03-21 | 内蒙古维拉斯托矿业有限公司 | Tungsten-tin comprehensive recovery combined reselection method |
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