CN102826695A - Scheelite beneficiation wastewater treatment technique - Google Patents
Scheelite beneficiation wastewater treatment technique Download PDFInfo
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- CN102826695A CN102826695A CN2012103585770A CN201210358577A CN102826695A CN 102826695 A CN102826695 A CN 102826695A CN 2012103585770 A CN2012103585770 A CN 2012103585770A CN 201210358577 A CN201210358577 A CN 201210358577A CN 102826695 A CN102826695 A CN 102826695A
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Abstract
The invention relates to a scheelite beneficiation wastewater treatment technique which comprises the following steps: electrolyzing to remove most water glass and most organic reagents, adding a coagulant aid to precipitate so as to remove the water glass and organic reagents, and finally, adding an oxidizer to remove residual organic reagents in the wastewater. By using the technique provided by the invention, the removal rate of the water glass is higher than 94.5%, and the removal rate of the beneficiation organic reagents is higher than 98%; the quality of the effluent water is stable, and exceeds the requirements of GB8978-1996 'Sewage Comprehensive Discharge Standard' Grade 1; and the treated water can be reclaimed for the beneficiation technique. The technique provided by the invention has the advantages of stable treatment effect, high efficiency, short technical process, small occupied area, low cost, energy saving and environmental protection, and is simple to operate.
Description
Technical field
The present invention relates to a kind of white tungsten beneficiation wastewater treatment process.
Background technology
Water glass is a kind of mineral colloid, is suppressor factor and dispersion agent that flotation operation the most often uses.The existence of water glass makes tailings water be difficult to clarification, adds organic medicament of the part difficult degradation that contains in the tailings water, makes white tungsten ore dressing industry tailings water be difficult to reuse.And about 4 tons of the mill water amount of ore per ton.Concentration of sodium silicate is more than 2000mg/L in the white tungsten ore dressing industry mine tailing wastewater, the COD that other organic medicament causes
CrConcentration is generally more than 200mg/L.The step of white tungsten beneficiation wastewater treatment process commonly used is following: (1) adds milk of lime in tailings water, more than the adjustment pH value to 11.0, again tailings water is delivered to the mine tailing storehouse, pulp water precipitation separation in the storehouse, and mine tailing wastewater enters the waste water processing station equalizing tank.(2) mine tailing wastewater of entering waste water processing station equalizing tank is promoted to reactive tank through pump, adds flocculation agent (like PAC, PAM), and dosage is greater than 80mg/L, and after fully flocculating, mine tailing wastewater is from flowing into inclined-plate clarifying basin.The pH value that (3) will get into the mine tailing wastewater of inclined-plate clarifying basin is adjusted to 6.0～9.0, effluxes after the filtration.The treatment process of above-mentioned routine can make tailings water discharge basic allow compliance with emission standards, but has following weak point: 1, treat effluent is difficult to reuse.Because the removal of water glass and organic medicament is not thorough in the mine tailing wastewater, influences mineral processing index, treating water is difficult to reuse.2, can not the stably reaching standard discharging.Because Atmospheric precipitation directly gets into the mine tailing storehouse, the water-quality guideline of mine tailing storehouse draining changes greatly, causes the treatment station effluent index unstable, stably reaching standard discharging difficulty.3, working cost is high.The dissemination of water glass makes the flocculating settling difficulty of mine tailing wastewater, need add milk of lime adjustment pH value 11 or more with add in a large number flocculation agent (＞80mg/L), water outlet pH value need be adjusted back, and causes wastewater treatment working cost height.In the water-deficient area, tailings water is back to ore dressing, makes ore dressing enterprise pay the cost that reduces metal recovery rate, causes the wasting of resources, is unfavorable for energy-conserving and environment-protective; In addition, the dissemination of water glass makes mine tailing wastewater flocculating settling difficulty, need add a large amount of flocculation agents, causes cost for wastewater treatment high.
Summary of the invention
The present invention is directed to the deficiency of prior art; A kind of white tungsten beneficiation wastewater treatment process is provided; Adopt the water quality of the white tungsten beneficiation wastewater that art breading of the present invention crosses to meet GB8978-1996 " integrated wastewater discharge standard " first discharge standard, and can reuse in ore dressing.
White tungsten beneficiation wastewater treatment process of the present invention, step is following:
A, in the waste water dosing coagulant, most water glass and most of organic medicament are removed in electrolysis again, sedimentation, wherein the consumption of coagulating agent is 0.01～0.02 times of water glass quality in the waste water, obtains the waste water through primary treatment;
B, toward step a in the waste water of primary treatment, add coagulant aids, further water glass and organic medicament are removed in sedimentation, wherein the consumption of coagulant aids is 15～20mg/l, obtains the waste water through secondary treatment;
C, toward step b in the waste water of secondary treatment, add oxygenant, remove anhydrate in remaining organic medicament, wherein the consumption of oxygenant be 3～4 times of organic pharmacy quality in the waste water of secondary treatment, mistake filters reuse water.
As further improvement of the present invention, dosing coagulant, electrolysis again in waste water earlier among the step a.
Further improve as of the present invention, the consumption of coagulating agent is 0.01～0.02 times of water glass quality in the waste water.
Electrolysis white tungsten beneficiation wastewater treatment process of the present invention adopts electrolysis process to handle white tungsten beneficiation wastewater, and reaction equation is following:
Electrolysis can interrupt the molecular chain of organic polymer medicament, for the decomposition of water glass provides sufficient carbon source, thereby has accelerated the decomposition settling velocity of water glass greatly, and entire reaction course was thoroughly accomplished in 3～5 minutes; Therefore white tungsten beneficiation wastewater treatment process of the present invention need not take off steady processing to water glass, and treatment effect does not receive the influence of concentration of sodium silicate in the waste water, and more than 94.5%, the organic medicament clearance of ore dressing is more than 98% to the clearance of water glass; Stable effluent quality surpasses the requirement of GB8978-1996 " integrated wastewater discharge standard " first discharge standard, and treating water can be back to ore-dressing technique.Method treatment effect of the present invention is stable, efficient, simple to operate; Technical process is short, and floor space is few; Cost is low, and energy-conserving and environment-protective.
Description of drawings
Fig. 1 is the process flow sheet of embodiment 2.
Embodiment
For the ease of understanding the present invention, below explain with embodiment.Need to prove that following examples only as enumerating, should not be regarded as the restriction to scope of the present invention.
10000 liters of embodiment 1 white tungsten beneficiation wastewaters detect data and see table 1, and waste water directly carries out electrolysis, and water of decomposition glass and organic medicament obtain the waste water through primary treatment; In the waste water of primary treatment, adding coagulant aids (PAM) 150g, water glass is removed in sedimentation, obtains the waste water through secondary treatment; Detection data through the waste water of secondary treatment are seen table 1; In the waste water of secondary treatment, adding oxygenant (H again
2O
2) 2.1kg, make the abundant oxidation of remaining organism in the water, and filter reuse water excessively.The data that record reuse water are seen table 1, surpass the requirement of GB 8978-1996 " integrated wastewater discharge standard " first discharge standard.Reuse water is used for ore-dressing technique, and the effect of producing new wet concentration ore deposit is suitable with adopting, and does not influence mineral processing index.
The white tungsten beneficiation wastewater of table 1 embodiment 1, through the detection data of the water and the reuse water of secondary treatment
Embodiment 2 adds coagulating agent (PAC) 26kg with the white tungsten beneficiation wastewater of embodiment 1 in waste water, carry out electrolysis again, and water of decomposition glass and organic medicament obtain the waste water through primary treatment; In the waste water of primary treatment, adding coagulant aids (PAM) 200g, water glass is removed in sedimentation, obtains the waste water through secondary treatment; Detection data through the waste water of secondary treatment are seen table 2; In the waste water of secondary treatment, adding oxygenant (H again
2O
2) 2.2kg, make the abundant oxidation of remaining organism in the water, and filter reuse water (process flow sheet is seen Fig. 1) excessively.The data that record reuse water are seen table 2, surpass the requirement of GB 8978-1996 " integrated wastewater discharge standard " first discharge standard.Reuse water is used for ore-dressing technique, and the effect of producing new wet concentration ore deposit is suitable with adopting, and does not influence mineral processing index.
The white tungsten beneficiation wastewater of table 2 embodiment 2, through the detection data of the water and the reuse water of secondary treatment
10000 liters of embodiment 3 white tungsten beneficiation wastewaters,, in waste water, add coagulating agent (PAC) 16.5kg, carry out electrolysis again, water of decomposition glass and organic medicament obtain the waste water through primary treatment; In the waste water of primary treatment, adding coagulant aids (PAM) 180g, water glass is removed in sedimentation, obtains the waste water through secondary treatment; Detection data through the waste water of secondary treatment are seen table 2; In the waste water of secondary treatment, adding oxygenant (H again
2O
2) 2.3kg, make the abundant oxidation of remaining organism in the water, and filter reuse water excessively.The data that record reuse water are seen table 3, surpass the requirement of GB 8978-1996 " integrated wastewater discharge standard " first discharge standard.Reuse water is used for ore-dressing technique, and the effect of producing new wet concentration ore deposit is suitable with adopting, and does not influence mineral processing index.
The white tungsten beneficiation wastewater of table 3 embodiment 3, through the detection data of the water and the reuse water of secondary treatment.
Claims (3)
1. white tungsten beneficiation wastewater treatment process, step is following:
A, with wastewater electrolytic, most water glass and most of organic medicament are removed in sedimentation, obtain the waste water through primary treatment;
B, toward step a in the waste water of primary treatment, add coagulant aids, further water glass and organic medicament are removed in sedimentation, wherein the consumption of coagulant aids is 15～20mg/l, obtains the waste water through secondary treatment;
C, toward step b in the waste water of secondary treatment, add oxygenant, remove anhydrate in remaining organic medicament, wherein the consumption of oxygenant be 3～4 times of organic pharmacy quality in the waste water of secondary treatment, mistake filters reuse water.
2. white tungsten beneficiation wastewater treatment process as claimed in claim 1 is characterized in that: dosing coagulant, electrolysis again in waste water earlier among the step a.
3. white tungsten beneficiation wastewater treatment process as claimed in claim 2 is characterized in that: the consumption of coagulating agent is 0.01～0.02 times of water glass quality in the waste water.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261531A (en) * | 2014-09-26 | 2015-01-07 | 湖南有色新田岭钨业有限公司 | Process for ore dressing of scheelite by using scheelite tailing wastewater |
| CN105254069A (en) * | 2015-11-03 | 2016-01-20 | 南京大学 | Wolframine beneficiation wastewater treatment process |
| CN105903231A (en) * | 2016-04-27 | 2016-08-31 | 中南大学 | Technology for treating scheelite mill tailings pulp by different steps through flocculation |
| CN110577307A (en) * | 2019-08-23 | 2019-12-17 | 湖南柿竹园有色金属有限责任公司 | Efficient low-cost treatment method for tungsten polymetallic ore beneficiation wastewater |
| CN110878393A (en) * | 2019-12-17 | 2020-03-13 | 中南大学 | Environment-friendly and efficient tungsten smelting method |
| CN115028289A (en) * | 2022-07-01 | 2022-09-09 | 衡阳远景钨业有限责任公司 | Process for flotation of scheelite after scheelite tailing wastewater treatment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261531A (en) * | 2014-09-26 | 2015-01-07 | 湖南有色新田岭钨业有限公司 | Process for ore dressing of scheelite by using scheelite tailing wastewater |
| CN105254069A (en) * | 2015-11-03 | 2016-01-20 | 南京大学 | Wolframine beneficiation wastewater treatment process |
| CN105903231A (en) * | 2016-04-27 | 2016-08-31 | 中南大学 | Technology for treating scheelite mill tailings pulp by different steps through flocculation |
| CN105903231B (en) * | 2016-04-27 | 2018-12-25 | 中南大学 | A kind of technique of substep flocculation treatment scheelite milltailings ore pulp |
| CN110577307A (en) * | 2019-08-23 | 2019-12-17 | 湖南柿竹园有色金属有限责任公司 | Efficient low-cost treatment method for tungsten polymetallic ore beneficiation wastewater |
| CN110878393A (en) * | 2019-12-17 | 2020-03-13 | 中南大学 | Environment-friendly and efficient tungsten smelting method |
| CN115028289A (en) * | 2022-07-01 | 2022-09-09 | 衡阳远景钨业有限责任公司 | Process for flotation of scheelite after scheelite tailing wastewater treatment |
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| CN102826695B (en) | 2014-01-15 |
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Effective date of registration: 20190819 Address after: 410019 Qingxi Chuanjiu Office Building and 113 Comprehensive Building, 299 Mulian East Road, Yuhua District, Changsha City, Hunan Province Patentee after: China Aluminum Environmental Protection and Energy Saving Technology (Hunan) Co., Ltd. Address before: 410011 Changsha Jiefang Middle Road, Hunan, No. 199 Patentee before: Changsha Engineering & Research Institute of Nonferrous Metallurgy Co., Ltd. |
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