CN102641789A - Mixed flocculating agent and method for subsiding molybdenum ore flotation tailings using same - Google Patents

Mixed flocculating agent and method for subsiding molybdenum ore flotation tailings using same Download PDF

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Publication number
CN102641789A
CN102641789A CN2012101302936A CN201210130293A CN102641789A CN 102641789 A CN102641789 A CN 102641789A CN 2012101302936 A CN2012101302936 A CN 2012101302936A CN 201210130293 A CN201210130293 A CN 201210130293A CN 102641789 A CN102641789 A CN 102641789A
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China
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mine tailing
flocculation agent
ore
molybdenum ore
subsiding
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CN2012101302936A
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谢兴中
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CINF Engineering Corp Ltd
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CINF Engineering Corp Ltd
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Priority to CN2012101302936A priority Critical patent/CN102641789A/en
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Abstract

The invention relates to the processing field of molybdenum ore flotation tailings and particularly provides a mixed flocculating agent and a method for subsiding molybdenum ore flotation tailings using the same. The mixed flocculating agent is composed of anionic poly aceylanide and polyacrylate by mass ratio of 3:1 to 9:1. In the method, raw molybdenum ore is performed with flotation, the mixed flocculating agent and lime milk are added in tailings, and the tailings are performed with flocculating settling and further dehydration so as to achieve subsiding. The using amount of the mixed flocculating agent is 10g/t to 14g/t relative to the tailings. The mixed flocculating agent and the method improve subsiding speed of the railings, reduce using amount of tailing subsiding lime, save cost and improve underflow concentration of a thickener, and the phenomenon of mudflow of the thickener cannot happen.

Description

A kind of mixed flocculation agent and use the method that it carries out the molybdenum ore flotation gangue subsidence
Technical field
The present invention relates to a kind of molybdenum ore flotation gangue subsidence field, be specially a kind of flocculant and sedimentation method that helps high oxidation rate molybdenum ore flotation tailing.
Background technology
In the molybdenum ore floatation process, some mining initial stage ore oxidation rate is higher, and the clay mineral phenomenon is serious, and the thin cement content of mine tailing is big, and the mine tailing sinking speed is slower.In addition, for reducing the influence of sludge, added waterglass in the ore dressing process as dispersant to flotation; Make mine tailing be difficult to sedimentation; Cause the mine tailing thickening pond to occur running muddy phenomenon, the solid content of concentrator overflow water is more, turbidity is too big, as directly returning floatation system; Have a strong impact on mineral processing index, the tailings recycling water utilization receives great restriction.
According in No. 109 file of State Bureau of Environmental Protection's environment-development (2005) " mine entironment protection with pollution prevention technique policy " about should implement in the exploitation of mineral resources " prevention and cure of pollution and ecological environmental protection are laid equal stress on; ecological environmental protection develop simultaneously with ecological construction and put prevention first, prevent and treat combine, process control, the comprehensive regulation " guilding principle, the ratio of water recycle that look for novelty, expand, reconstruct the ore dressing of non-ferrous metal system reaches more than 75%.In addition, because water resource is in short supply, the water consumption in ore dressing plant is huge, and the recycling water utilization rate that increases its mine tailing is most important to the whole energy efficiency of factory that selects, and this just requires the ore dressing plant must solve the mine tailing settlement issues with all strength.
To the problems referred to above, the medicament scheme of anion-polyacrylamide (molecular weight 1,200 ten thousand) and lime (adjust pH is in the 11-12 scope) was once taked to add in the ore dressing plant.Though played certain effect of settling, flocculation conglomeration poor effect adds that polyacrylamide has certain influence to the ceramic filter performance; It is serious to cause mine tailing ceramic filter potsherd to stop up, the dewatering efficiency variation, and cake moisture reaches 27% sometimes; And 4 total processed amounts of ceramic filter can only reach 40t/h, and the tailings dewatering treating capacity is difficult to and the ore handling capacity balance, and therefore concentrator constantly accumulates mine tailing; The final muddy phenomenon of race that still occurs; Make ore dressing plant equipment start-stop stop, intermittent, can not give full play to concentrator efficient.
In addition, added large quantities of lime (>=3.5 kg/t) owing in the mine tailing infall process, caused ore slurry pipeline knot calcium, seriously corroded, rate of breakdown is high, and maintenance is frequent, is seriously restricting carrying out continuously of ore dressing production.Therefore, develop a kind of lime and good to this molybdenum ore mine tailing flocculating effect, extremely urgent that adds less to the less flocculating agent of ceramic filter filter effect influence.
Through investigating, having attempted code name is the polyacrylamide (molecular weight 1600-1800 ten thousand) of H1028 and 9136, though these two kinds of flocculants effect in static test is fine; But in the production practices; This flocculant once flocculates and forms floc sedimentation, after stirring the fracture fragmentation, and secondary flocculating effect extreme difference.Behind the climate cooling, water-soluble, the flocculating effect of flocculant is variation also, can't reach desirable effect.
Summary of the invention
To the problem that prior art exists, the present invention aims to provide a kind of mixed flocculation agent and a kind of sedimentation method that helps the high oxidation rate molybdenum milltailings, to improve the mine tailing sinking speed, has reduced lime consumption in the mine tailing infall process, has practiced thrift cost.
For realizing above-mentioned purpose, one of technical scheme of the present invention is:
A kind of mixed flocculation agent is made up of by the mass ratio of 3:1 ~ 9:1 PAMA and polyacrylate, and said polyacrylate is selected from Sodium Polyacrylate, polyacrylic acid potassium or the ammonium polyacrylate of HMW, and said HMW is meant that molecular weight is 10 6-10 7
The molecular weight of said PAMA is preferably 2,000,000-1,200 ten thousand, and preferred 4,000,000-8,000,000.
A kind of method of molybdenum ore flotation gangue subsidence, molybdenum raw ore add above-mentioned mixed flocculation agent and milk of lime through after the flotation in mine tailing, mine tailing is further dehydration again behind flocculating setting, gets final product; The consumption of said mixed flocculation agent is 10g/t-14g/t with respect to mine tailing, and the consumption of lime is 1.5 kg/t-2.5 kg/t with respect to mine tailing, and the appropriate pH when the mixed flocculation agent is used is 9-10.
When mine tailing flocculating setting in concentrator, thickener underflow is further dewatered by ceramic filter again, gets final product.This moment, concentrator overflow water turbidity was 9FTU-10FTU, and the pH value of overflow water is 9-10.
The preferred following steps that add in said step (3) back: add new water in the concentrator overflow water and in the filtered water of filter again, adjust pH is 7.5-8.5, returns the molybdenum ore ore-sorting system at last and uses.
Compared with prior art, advantage of the present invention is:
1, mixed flocculation agent of the present invention is water-soluble better, and the secondary flocculating effect is better, and raw material sources are wide, and are economical and practical.
2, mine tailing sedimentation method of the present invention has improved the mine tailing sinking speed, has improved the concentrator treating capacity to a certain extent.
3, muddy phenomenon no longer appears running in concentrator, and tailings recycling water does not have influence basically to floatation indicators, satisfies the mill water requirement.
4, reduce the flocculant consumption, practiced thrift cost.
5, reduced mine tailing sedimentation lime consumption, pipeline knot calcium blockage problem is alleviated significantly, practices thrift 1.5 tons of lime consumptions every day, practices thrift about 450 yuan of cost (quick lime is by 300 yuan of/ton calculating) every day.
6, thickener underflow concentration brings up to 58% by 46% original (concentration about 28% before the tailings dewatering), and the ceramic filter treating capacity also reaches normally, can reach balance basically with ore handling capacity.
Description of drawings
Fig. 1 is the process chart of molybdenum ore mine tailing sedimentation method of the present invention.
The specific embodiment
Below in conjunction with specific embodiment the present invention is done further explanation and explanation; Enumerated molybdenum ore ore dressing plant, the Inner Mongol as embodiment; But the present invention is not limited to this, and all available method of the present invention of flotation tailing of the molybdenum ore of high oxidation rate, many mud is carried out sedimentation.
Embodiment 1
Production practices with molybdenum ore ore dressing plant, the Inner Mongol are example:
Ore handling capacity 1000t/d; The major metal mineral are molybdenite, pyrite, limonite; Nonmetallic mineral is quartz, feldspar, kaolin, mica etc., and its technological process is two sections open circuit crushings, one section closed circuit grinding, and mog-0.074mm 60~65%; Flotation flowsheet is one roughing, scan for four times, obtain mine tailing after selected eight times.
Select the technological process of molybdenum mine tailing flocculating setting as shown in Figure 1, concrete steps are:
(1) the molybdenum raw ore adds mixed flocculation agent and milk of lime through after the flotation in mine tailing, flows into concentrator after the stirring again, and control tail pH values of pulp is between 9-10; The mixed flocculation agent is by the polyacrylic acid potassium (molecular weight 10 of PAMA (molecular weight 4,000,000) with HMW 6) mass ratio of pressing 5:1 forms, its consumption is 12g/t with respect to mine tailing, the consumption of lime is 2.0 kg/t with respect to mine tailing;
(2) mine tailing flocculating setting in concentrator, this moment, the overflow water turbidity was about 9.4FTU, muddy phenomenon no longer appears running in concentrator;
(3) thickener underflow (underflow density 58%) is further dewatered by ceramic filter again, and this moment, the pH value of primary water was 9.5; The ceramic filter cake moisture is about 10%.
(4),, make that the pH value is to return the use of molybdenum ore ore-sorting system after 8.0 so need mix with new water because the optimal pH of molybdenum ore flotation is about 8.0, and overflow water (pH value be 9.0-10.0) can not directly be used for ore dressing production.
The backwater to float test shows that tailings recycling water does not have influence basically to floatation indicators, concentrate grade about 45%, and the rate of recovery 80%~82% satisfies the mill water requirement.
Conclusion:
1, mixed flocculation agent of the present invention is water-soluble better, and the secondary flocculating effect is better, and optimal pH is about 9.5.
2, mine tailing sedimentation method of the present invention has improved the mine tailing sinking speed, brings up to 0.41m/h by original 0.12m/h, has improved the concentrator treating capacity to a certain extent.
3, muddy phenomenon no longer appears running in concentrator, and concentrator overflow water turbidity is merely 9.4FTU, and the backwater to float test shows that tailings recycling water does not have influence (about concentrate grade 45%, the rate of recovery 80%~82%) basically to floatation indicators, satisfies the mill water requirement.
4, reduced the flocculant consumption, reduced to (concentration 0.05%) about 12g/t by (concentration 0.05%) about original 22g/t, from the price of mixed flocculation agent, comprehensive estimate can be practiced thrift flocculant cost about 25%.
5, mine tailing sedimentation lime consumption is reduced to about 2.0kg/t by original 3.5kg/t, and pipeline knot calcium blockage problem is alleviated significantly, practices thrift 1.5 tons of lime consumptions every day, practices thrift about 450 yuan of cost (quick lime is by 300 yuan of/ton calculating) every day.
6, thickener underflow concentration brings up to 58% by 46% original (concentration about 28% before the tailings dewatering), and the ceramic filter treating capacity also reaches normally, can reach balance basically with ore handling capacity, and muddy phenomenon no longer appears running in concentrator.
Embodiment 2:
Other condition only changes the mixed flocculation agent with embodiment 1, and said mixed flocculation agent is by the Sodium Polyacrylate (molecular weight 10 of PAMA (molecular weight 8,000,000) with HMW 7) mass ratio of pressing 3:1 forms, the consumption of mixed flocculation agent is 14 g/t with respect to mine tailing, can reach the effect close with embodiment 1.
Embodiment 3:
Other condition only changes the mixed flocculation agent with embodiment 1, and said mixed flocculation agent is by the ammonium polyacrylate (molecular weight 10 of PAMA (molecular weight 1,000 ten thousand) with HMW 6) mass ratio of pressing 9:1 forms, the consumption of mixed flocculation agent is 10 g/t with respect to mine tailing, can reach the effect close with embodiment 1.

Claims (5)

1. mixed flocculation agent; It is characterized in that; Be made up of by the mass ratio of 3:1 ~ 9:1 PAMA and polyacrylate, said polyacrylate is selected from Sodium Polyacrylate, polyacrylic acid potassium or the ammonium polyacrylate of HMW, and said HMW is meant that molecular weight is 10 6-10 7
2. according to the said mixed flocculation agent of claim 1, it is characterized in that the molecular weight of said PAMA is 2,000,000-12,000,000.
3. according to the said mixed flocculation agent of claim 1, it is characterized in that the molecular weight of said PAMA is 4,000,000-8,000,000.
4. the method for a molybdenum ore flotation gangue subsidence is characterized in that, the molybdenum raw ore adds one of claim 1-3 said mixed flocculation agent and milk of lime through after the flotation in mine tailing, and mine tailing is further dehydration again behind flocculating setting, gets final product; The consumption of said mixed flocculation agent is 10g/t-14g/t with respect to mine tailing, and the consumption of lime is 1.5 kg/t-2.5 kg/t with respect to mine tailing, and the appropriate pH when the mixed flocculation agent is used is 9-10.
5. according to the method for the said molybdenum ore flotation gangue subsidence of claim 4; It is characterized in that; Add following steps in said step (3) back: add new water in the concentrator overflow water and in the filtered water of filter again, adjust pH is 7.5-8.5, returns the molybdenum ore ore-sorting system at last and uses.
CN2012101302936A 2012-04-28 2012-04-28 Mixed flocculating agent and method for subsiding molybdenum ore flotation tailings using same Pending CN102641789A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103706483A (en) * 2013-11-29 2014-04-09 河南东大矿业股份有限公司 Method for judging selectivity of diasporic bauxite
CN104147814A (en) * 2014-08-28 2014-11-19 邓鑫 Electricity-saving and water-saving method for treating tailings
CN104174189A (en) * 2014-08-28 2014-12-03 邓鑫 Energy-saving method for treating tailings
CN104225969A (en) * 2014-09-22 2014-12-24 云南科力新材料有限公司 Method and device for concentrating molybdenum ore flotation tailing ore pulp
CN104475238A (en) * 2015-01-05 2015-04-01 长沙有色冶金设计研究院有限公司 Enrichment method for sedimentary type vanadium ores
CN105327773A (en) * 2015-11-26 2016-02-17 四川南江新兴矿业有限公司 Method for recovering nepheline ore in nepheline ore tailings
CN105797869A (en) * 2016-04-08 2016-07-27 都兰金辉矿业有限公司 Composite flocculating agent used for flotation of tailings of micro-grained gold deposit and application method thereof
CN106984443A (en) * 2017-05-19 2017-07-28 铜陵化工集团新桥矿业有限公司 A kind of method that application mixed flocculation agent carries out Colloid form pyrite flocculation sediment
CN107051753A (en) * 2017-05-19 2017-08-18 江西理工大学 A kind of method that application mixed flocculation agent carries out microfine chalcopyrite flocculation sediment
CN107140761A (en) * 2017-04-21 2017-09-08 中铁四局集团有限公司 A kind of mud-water separation method of diaphram wall discarded slurry
CN107140721A (en) * 2017-04-21 2017-09-08 中铁四局集团有限公司 A kind of discarded slurry mud-water separation preparation and its application process
CN107427841A (en) * 2014-12-30 2017-12-01 凯米罗总公司 The inhibitor of ore floatation
CN107427842A (en) * 2014-12-23 2017-12-01 凯米罗总公司 Selective flocculant for ore beneficiation
CN111129453A (en) * 2019-12-17 2020-05-08 中南大学 Energy storage material and application thereof
CN111686941A (en) * 2020-06-22 2020-09-22 长沙矿山研究院有限责任公司 Efficient flotation method for copper ore containing ultrafine graphite
WO2020231802A1 (en) * 2019-05-10 2020-11-19 Sabre Intellectual Property Holdings Llc Compositions and methods using chlorate to break polyacrylamide

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103706483A (en) * 2013-11-29 2014-04-09 河南东大矿业股份有限公司 Method for judging selectivity of diasporic bauxite
CN104147814A (en) * 2014-08-28 2014-11-19 邓鑫 Electricity-saving and water-saving method for treating tailings
CN104174189A (en) * 2014-08-28 2014-12-03 邓鑫 Energy-saving method for treating tailings
CN104225969A (en) * 2014-09-22 2014-12-24 云南科力新材料有限公司 Method and device for concentrating molybdenum ore flotation tailing ore pulp
CN107427842A (en) * 2014-12-23 2017-12-01 凯米罗总公司 Selective flocculant for ore beneficiation
CN107427841A (en) * 2014-12-30 2017-12-01 凯米罗总公司 The inhibitor of ore floatation
CN104475238A (en) * 2015-01-05 2015-04-01 长沙有色冶金设计研究院有限公司 Enrichment method for sedimentary type vanadium ores
CN104475238B (en) * 2015-01-05 2018-02-16 长沙有色冶金设计研究院有限公司 A kind of enrichment method of appositional pattern navajoite
CN105327773A (en) * 2015-11-26 2016-02-17 四川南江新兴矿业有限公司 Method for recovering nepheline ore in nepheline ore tailings
CN105797869A (en) * 2016-04-08 2016-07-27 都兰金辉矿业有限公司 Composite flocculating agent used for flotation of tailings of micro-grained gold deposit and application method thereof
CN105797869B (en) * 2016-04-08 2018-04-03 都兰金辉矿业有限公司 A kind of composite flocculation agent and its application method for Very Small Au-ore flotation tailing
CN107140721A (en) * 2017-04-21 2017-09-08 中铁四局集团有限公司 A kind of discarded slurry mud-water separation preparation and its application process
CN107140761A (en) * 2017-04-21 2017-09-08 中铁四局集团有限公司 A kind of mud-water separation method of diaphram wall discarded slurry
CN107051753A (en) * 2017-05-19 2017-08-18 江西理工大学 A kind of method that application mixed flocculation agent carries out microfine chalcopyrite flocculation sediment
CN106984443A (en) * 2017-05-19 2017-07-28 铜陵化工集团新桥矿业有限公司 A kind of method that application mixed flocculation agent carries out Colloid form pyrite flocculation sediment
CN107051753B (en) * 2017-05-19 2019-02-26 江西理工大学 A method of microfine chalcopyrite flocculation sedimentation is carried out using mixed flocculation agent
WO2020231802A1 (en) * 2019-05-10 2020-11-19 Sabre Intellectual Property Holdings Llc Compositions and methods using chlorate to break polyacrylamide
CN111129453A (en) * 2019-12-17 2020-05-08 中南大学 Energy storage material and application thereof
CN111686941A (en) * 2020-06-22 2020-09-22 长沙矿山研究院有限责任公司 Efficient flotation method for copper ore containing ultrafine graphite

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