CN103708591A - Polymetallic ore beneficiation wastewater recycling method - Google Patents
Polymetallic ore beneficiation wastewater recycling method Download PDFInfo
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Abstract
The invention provides a polymetallic ore beneficiation wastewater recycling method. The polymetallic ore beneficiation wastewater recycling method is characterized by comprising two steps of physical treatment and biological treatment. According to the polymetallic ore beneficiation wastewater recycling method, the existing beneficiation wastewater output equipment and tailings ponds of aluminium and zinc beneficiation industries are used, wastewater treating agents such as calcium hydroxide, saponification slag and calcium carbide are added to wastewater in a mixing tank so as to ensure that suspended matters in the wastewater settle, the wastewater is purified so as to meet the technical requirements that obtained clear water is continuously used for beneficiation, the content of suspended matters in the treated water is less than 100mg/L, the pH value of the treated water is 8, and the cyclic utilization of the beneficiation wastewater is realized. The polymetallic ore beneficiation wastewater recycling method has the characteristics of low investment, low running cost, energy conservation, emission reduction and cyclic economy and is suitable for the cyclic utilization of the polymetallic ore beneficiation wastewater.
Description
Technical field
The invention belongs to Industrial Wastewater Treatment field, relate to a kind of suitable flocculation agent and coagulant aids two-stage flocculation sediment of utilizing and process heavy metal lower concentration, high turbidity ore-dressing of polymetallic ore waste water, after processing, stably reaching standard discharges or reaches the method for reuse standard.
Background technology
In ore dressing process, waste water is mainly derived from washup, fragmentation and sorts San Ge workshop section.The process that sorts of ore mainly contains gravity treatment, flotation and magnetic separation etc.According to statistics, process 1t ore and adopt flotation process to need water consumption 4-7m2, adopt gravity separation method to need water consumption 20-26 m2, adopt flotation magnetic method to need water consumption 23-27 m2, adopt gravity treatment flotation process to need water consumption 20-30 m2.Remove the water yield recycling, the water yield that the overwhelming majority consumes follows mine tailing to flow out from dressing-works with the form of Tailings Slurry.In beneficiation wastewater, the index such as heavy metal ion, solid suspension substrate concentration and chemical oxygen demand (COD) surpasses national < < integrated wastewater discharge standard (GB8978-1996) > >, and directly outer row has a strong impact on water body water quality around; Without purifying treatment direct reuse, the stability of production and the technical indicator of flotation beneficiation process will be had a strong impact on.At present, beneficiation wastewater treatment method is conventional natural degradation, coagulating sedimentation, neutralization, absorption, oxygenolysis etc.Coagulant sedimentation (the ferrous method of lime one) technique has the features such as flow process is simple, convenient management, reliable, expense is low, starting material (unslaked lime) are easy to get, and uses at home more.Both at home and abroad for having higher reclamation rate after the treatment technology comparative maturity of the beneficiation wastewaters such as pyrite wastewater and lead, zinc, copper, antimony and wastewater treatment, but domesticly only have the plumbous wastewater recycle rate of taking leave the part Mineral Processing Enterprises such as silver ore, Qian Ci ore deposit, factory dam, Shouwangfen Copper Mine in all mouthful of plumbous diction ore deposit, Nanjing higher.For ore-dressing of polymetallic ore waste water, as having tungsten simultaneously, molybdenum, bismuth and pyrite, the Mineral Processing Enterprises of the multiple valuable mineral such as fluorite, ore-dressing technique is complicated, flotation reagent is various, beneficiation wastewater quantity discharged is large, complicated component after each operation waste water mixes, adopt in the technical finesse processes such as lime neutralisation and have flocculating settling weak effect, mud-water separation difficulty, heavy metal ion in processed waste water, solid suspension substrate concentration and chemical oxygen demand (COD) are difficult to stably reaching standard, return to ore-dressing technique and directly affect the problems such as flotation efficiency and concentrate grade, cause the general even few reuse on the low side of processed waste water reclamation rate.Therefore, ore-dressing of polymetallic ore waste water for source and complicated component, multi-metal lower concentration, high turbidity, by basic material, carry out ore-dressing of polymetallic ore waste water acidity adjustment, adopt efficient flocculant and coagulant aids two-stage flocculation sediment to realize the discharge of ore-dressing of polymetallic ore waste water stably reaching standard, by deep purifying, realize reuse, eliminate the potentially contaminated that ore-dressing of polymetallic ore enterprise surrounding enviroment are caused significant.
summary of the invention
The object of the invention is the problem existing in ore-dressing of polymetallic ore wastewater treatment process, proposed a kind of processing scheme of suitable ore-dressing of polymetallic ore waste water.
To achieve these goals, the present invention has adopted following technical scheme:
A method for ore-dressing of polymetallic ore cycling utilization of wastewater, is characterized in that: comprise physical treatment, two steps of biological treatment, concrete grammar is as follows:
(1), ore-dressing of polymetallic ore waste water physical treatment course:
The ore-dressing of polymetallic ore waste water producing by Beng Jiang ore-dressing of polymetallic ore factory is input in mixing pit, treatment agent is joined in treatment agent storehouse, and be input to respectively in vibratory feeder by pipeline, by vibratory feeder, make treatment agent quantitatively join in mixing pit, under well-beaten condition, make treatment agent and ore-dressing of polymetallic ore waste water hybrid reaction, produce flocculation water, by waste water Send out pump, flocculation water is input in settling bowl, flocculation water throw out natural subsidence in settling bowl, primary water after sedimentation slowly overflows and flows to pools zone from settling bowl, in pools zone, retain, utilize the breach of pools zone, make clear water slowly flow in clean water basin, when ore-dressing of polymetallic ore, with pump, from clean water basin, draw water and be transported in ore-dressing of polymetallic ore factory, for ore-dressing of polymetallic ore water, use,
(2), the treatment agent of preparing for the treatment of agent adopts following 5 kinds wherein a kind of:
1., dry hydrate, unslaked lime is added to water and makes white lime, be crushed to 50-70 order;
2., saponification ground-slag, the saponification slag of producing epoxy the third a heatable brick bed is dried and is crushed to 50-70 order;
3., polysilicate sulfuric acid polymetallic ore iron powder, polysilicate sulfuric acid polymetallic ore iron powder is broken to 80-200 order;
4., polyoxygenated polymetallic ore iron powder, polyoxygenated polymetallic ore iron iron powder is broken to 80-200 order;
5., poly-silicic acid polymetallic ore powder, will gather silicic acid polymetallic ore and be crushed to 100-200 order.
The usage quantity of above-described treatment agent is determined: the mass percent that treatment agent add-on accounts for wastewater flow rate is 1.8-3%; Wherein, while using single polysilicate sulfuric acid polymetallic ore iron as flocculation agent, proportioning is controlled at ratio n (the Fe+Al)/n (Si)=1-5 of Si02 mass percent=1%-4%, amount of substance, within the scope of ratio n (Al)/n (the Fe)=O. 5-2 of amount of substance.
Above-described is 500-1000mm at the topped thickness of tailings warehouse dam body artificial soil horizon, artificial vegetation, the hydrobiont of introducing in mine tailing Kuku or plant are fish, the frog or pasture and water, nutrition pot culture with mattress is entered wherein, after 1 year, sub-dam is all covered by vegetation, plays for a long time that counter dam prevents erosion and the effect of airborne dust.
Described settling bowl is a plurality of settling bowl ladder series connection.
Beneficial effect of the present invention:
Present method is relied mainly on prevention, anti-, control the method for combination, by natural subsidence technology, flocculation carrier flotation technology, ore in sand form stone recovery technology, the ore dressing new technologies such as beneficiation wastewater flow process internal recycle technology, novel process, reduce the generation of beneficiation wastewater, chemical treatment method is to increase chemical reagent, improve rate of descent and the medicament composition utilization ratio of subparticle in beneficiation wastewater, reduce waste water Chinese medicine and microfine granule content, improve the purge amount in beneficiation wastewater flow process, physical treatment is to extend settling height, increase the settling time, the two multiple ore deposit of each and every one the step process beneficiation wastewaters of finally carrying out a biological disposal upon, backwater quality reaches agricultural irrigation water standard and fish animal husbandry water supply standard, recycling water utilization rate is greater than 97%, substantially accomplish zero release, when head grade is only 0.5%, ore recovery ratio reaches more than 65%, concentrate product reaches more than 50% containing ore deposit grade, realize efficient circulation economy.The technical program reduces the generation of beneficiation wastewater from source, control, in conjunction with processing the own beneficiation wastewater producing, by Tailings Dam ecological reconstruction, realizes the peaceful and friendly coexistence of human and environment.
Accompanying drawing explanation
Fig. 1 ore deposit of the present invention beneficiation wastewater treatment scheme process flow sheet.
Embodiment
With reference to the accompanying drawings, the specific embodiment of the present invention is further described in detail.
Embodiment 1:
A method for ore-dressing of polymetallic ore cycling utilization of wastewater, wherein: comprise physical treatment, two steps of biological treatment, concrete grammar is as follows:
(1), ore-dressing of polymetallic ore waste water physical treatment course:
The ore-dressing of polymetallic ore waste water producing by Beng Jiang ore-dressing of polymetallic ore factory is input in mixing pit, treatment agent is joined in treatment agent storehouse, and be input to respectively in vibratory feeder by pipeline, by vibratory feeder, make treatment agent quantitatively join in mixing pit, under well-beaten condition, make treatment agent and ore-dressing of polymetallic ore waste water hybrid reaction, produce flocculation water, by waste water Send out pump, flocculation water is input in settling bowl, flocculation water throw out natural subsidence in settling bowl, primary water after sedimentation slowly overflows and flows to pools zone from settling bowl, in pools zone, retain, utilize the breach of pools zone, make clear water slowly flow in clean water basin, when ore-dressing of polymetallic ore, with pump, from clean water basin, draw water and be transported in ore-dressing of polymetallic ore factory, for ore-dressing of polymetallic ore water, use,
(2), the treatment agent of preparing for the treatment of agent adopts following 3 kinds wherein a kind of:
1., dry hydrate, unslaked lime is added to water and makes white lime, be crushed to 50 orders;
2., polysilicate sulfuric acid polymetallic ore iron powder, polysilicate sulfuric acid polymetallic ore iron powder is broken to 80 orders;
3., polyoxygenated polymetallic ore iron powder, polyoxygenated polymetallic ore iron iron powder is broken to 80 orders;
The usage quantity of above-described treatment agent is determined: the mass percent that treatment agent add-on accounts for wastewater flow rate is 1.8%; Wherein, while using single polysilicate sulfuric acid polymetallic ore iron as flocculation agent, proportioning is controlled at ratio n (the Fe+Al)/n (Si)=1 of Si02 mass percent=1%, amount of substance, in ratio n (Al)/n (Fe)=O. 5 scopes of amount of substance.
Above-described is 500mm at the storehouse of the pools zone topped thickness of dam body artificial soil horizon, artificial vegetation, the hydrobiont of introducing in mine tailing Kuku or plant are fish, the frog or pasture and water, nutrition pot culture with mattress is entered wherein, after 1 year, sub-dam is all covered by vegetation, plays for a long time that counter dam prevents erosion and the effect of airborne dust.
Described settling bowl is a plurality of settling bowl ladder series connection.
Embodiment 2:
A method for ore-dressing of polymetallic ore cycling utilization of wastewater, wherein: comprise physical treatment, two steps of biological treatment, concrete grammar is as follows:
(1), ore-dressing of polymetallic ore waste water physical treatment course:
The ore-dressing of polymetallic ore waste water producing by Beng Jiang ore-dressing of polymetallic ore factory is input in mixing pit, treatment agent is joined in treatment agent storehouse, and be input to respectively in vibratory feeder by pipeline, by vibratory feeder, make treatment agent quantitatively join in mixing pit, under well-beaten condition, make treatment agent and ore-dressing of polymetallic ore waste water hybrid reaction, produce flocculation water, by waste water Send out pump, flocculation water is input in settling bowl, flocculation water throw out natural subsidence in settling bowl, primary water after sedimentation slowly overflows and flows to pools zone from settling bowl, in pools zone, retain, utilize the breach of pools zone, make clear water slowly flow in clean water basin, when ore-dressing of polymetallic ore, with pump, from clean water basin, draw water and be transported in ore-dressing of polymetallic ore factory, for ore-dressing of polymetallic ore water, use,
(2), the treatment agent of preparing for the treatment of agent adopts following 4 kinds wherein a kind of:
1., dry hydrate, unslaked lime is added to water and makes white lime, be crushed to 60 orders;
2., saponification ground-slag, the saponification slag of producing epoxy the third a heatable brick bed is dried and is crushed to 60 orders;
3., polysilicate sulfuric acid polymetallic ore iron powder, polysilicate sulfuric acid polymetallic ore iron powder is broken to 100 orders;
4., polyoxygenated polymetallic ore iron powder, polyoxygenated polymetallic ore iron iron powder is broken to 100 orders;
The usage quantity of above-described treatment agent is determined: the mass percent that treatment agent add-on accounts for wastewater flow rate is 2%; Wherein, while using single polysilicate sulfuric acid polymetallic ore iron as flocculation agent, proportioning is controlled at ratio n (the Fe+Al)/n (Si)=3 of Si02 mass percent=3%, amount of substance, in ratio n (Al)/n (Fe)=2 scope of amount of substance.
The above-described topped thickness of dam body artificial soil horizon in pools zone is 800mm, artificial vegetation, the hydrobiont of introducing in mine tailing Kuku or plant are fish, the frog or pasture and water, nutrition pot culture with mattress is entered wherein, after 1 year, sub-dam is all covered by vegetation, plays for a long time that counter dam prevents erosion and the effect of airborne dust.
Described settling bowl is a plurality of settling bowl ladder series connection.
Embodiment 3:
A method for ore-dressing of polymetallic ore cycling utilization of wastewater, wherein: comprise physical treatment, two steps of biological treatment, concrete grammar is as follows:
(1), ore-dressing of polymetallic ore waste water physical treatment course:
The ore-dressing of polymetallic ore waste water producing by Beng Jiang ore-dressing of polymetallic ore factory is input in mixing pit, treatment agent is joined in treatment agent storehouse, and be input to respectively in vibratory feeder by pipeline, by vibratory feeder, make treatment agent quantitatively join in mixing pit, under well-beaten condition, make treatment agent and ore-dressing of polymetallic ore waste water hybrid reaction, produce flocculation water, by waste water Send out pump, flocculation water is input in settling bowl, flocculation water throw out natural subsidence in settling bowl, primary water after sedimentation slowly overflows and flows to pools zone from settling bowl, in pools zone, retain, utilize the breach of pools zone, make clear water slowly flow in clean water basin, when ore-dressing of polymetallic ore, with pump, from clean water basin, draw water and be transported in ore-dressing of polymetallic ore factory, for ore-dressing of polymetallic ore water, use,
(2), the treatment agent of preparing for the treatment of agent adopts following 5 kinds wherein a kind of:
1., dry hydrate, unslaked lime is added to water and makes white lime, be crushed to 70 orders;
2., saponification ground-slag, the saponification slag of producing epoxy the third a heatable brick bed is dried and is crushed to 70 orders;
3., polysilicate sulfuric acid polymetallic ore iron powder, polysilicate sulfuric acid polymetallic ore iron powder is broken to 200 orders;
4., polyoxygenated polymetallic ore iron powder, polyoxygenated polymetallic ore iron iron powder is broken to 200 orders;
5., poly-silicic acid polymetallic ore powder, will gather silicic acid polymetallic ore and be crushed to 200 orders.
The usage quantity of above-described treatment agent is determined: the mass percent that treatment agent add-on accounts for wastewater flow rate is 3%; Wherein, while using single polysilicate sulfuric acid polymetallic ore iron as flocculation agent, proportioning is controlled at ratio n (the Fe+Al)/n (Si)=5 of Si02 mass percent=4%, amount of substance, in ratio n (Al)/n (Fe)=2 scope of amount of substance.
Described settling bowl is a plurality of settling bowl ladder series connection.
The above-described topped thickness of dam body artificial soil horizon in pools zone is 1000mm, artificial vegetation, the hydrobiont of introducing in mine tailing Kuku or plant are fish, the frog or pasture and water, nutrition pot culture with mattress is entered wherein, after 1 year, sub-dam is all covered by vegetation, plays for a long time that counter dam prevents erosion and the effect of airborne dust.
Above-described embodiment, is more preferably one of concrete mode of the present invention, and the common variation that those skilled in the art carry out within the scope of technical solution of the present invention and replacement all should be included in protection scope of the present invention.
Claims (4)
1. a method for ore-dressing of polymetallic ore cycling utilization of wastewater, is characterized in that: comprise physical treatment, two steps of biological treatment, physical treatment concrete grammar is as follows:
(1), ore-dressing of polymetallic ore waste water physical treatment course:
The ore-dressing of polymetallic ore waste water producing by Beng Jiang ore-dressing of polymetallic ore factory is input in mixing pit, treatment agent is joined in treatment agent storehouse, and be input to respectively in vibratory feeder by pipeline, by vibratory feeder, make treatment agent quantitatively join in mixing pit, under well-beaten condition, make treatment agent and ore-dressing of polymetallic ore waste water hybrid reaction, produce flocculation water, by waste water Send out pump, flocculation water is input in settling bowl, flocculation water throw out natural subsidence in settling bowl, primary water after sedimentation slowly overflows and flows to pools zone from settling bowl, in pools zone, retain, utilize the breach of pools zone, make clear water slowly flow in clean water basin, when ore-dressing of polymetallic ore, with pump, from clean water basin, draw water and be transported in ore-dressing of polymetallic ore factory, for ore-dressing of polymetallic ore water, use,
(2), the treatment agent of preparing for the treatment of agent adopts following 5 kinds wherein a kind of:
1., dry hydrate, unslaked lime is added to water and makes white lime, be crushed to 50-70 order;
2., saponification ground-slag, the saponification slag of producing epoxy the third a heatable brick bed is dried and is crushed to 50-70 order;
3., polysilicate sulfuric acid polymetallic ore iron powder, polysilicate sulfuric acid polymetallic ore iron powder is broken to 80-200 order;
4., polyoxygenated polymetallic ore iron powder, polyoxygenated polymetallic ore iron iron powder is broken to 80-200 order;
5., poly-silicic acid polymetallic ore powder, will gather silicic acid polymetallic ore and be crushed to 100-200 order.
2. the method for ore-dressing of polymetallic ore cycling utilization of wastewater according to claim 1, is characterized in that: the usage quantity of described treatment agent is determined: the mass percent that treatment agent add-on accounts for wastewater flow rate is 1.8-3%; Wherein, while using single polysilicate sulfuric acid polymetallic ore iron as flocculation agent, proportioning is controlled at ratio n (the Fe+Al)/n (Si)=1-5 of Si02 mass percent=1%-4%, amount of substance, within the scope of ratio n (Al)/n (the Fe)=O. 5-2 of amount of substance.
3. the method for ore-dressing of polymetallic ore cycling utilization of wastewater according to claim 1, it is characterized in that: described biological treatment is to be 500-1000mm at the storehouse of the pools zone topped thickness of dam body artificial soil horizon, artificial vegetation, the hydrobiont of introducing in mine tailing Kuku or plant are fish, the frog or pasture and water, nutrition pot culture with mattress is entered wherein, after 1 year, sub-dam is all covered by vegetation, plays for a long time that counter dam prevents erosion and the effect of airborne dust.
4. the method for ore-dressing of polymetallic ore cycling utilization of wastewater according to claim 1, is characterized in that: described settling bowl is a plurality of settling bowl ladder series connection.
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| CN104591442A (en) * | 2015-01-30 | 2015-05-06 | 河南理工大学 | Gold tailing multistage purification treatment technology |
| CN104876310A (en) * | 2015-04-23 | 2015-09-02 | 太原钢铁(集团)有限公司 | Method for improving quality of micro-fine particle iron ore tailing return water |
| CN105016525A (en) * | 2015-07-09 | 2015-11-04 | 北京矿冶研究总院 | Copper-molybdenum ore beneficiation wastewater treatment method |
| CN106365289A (en) * | 2016-10-18 | 2017-02-01 | 中南大学 | Treatment method of high concentration silicate ion beneficiation wastewater |
| CN107487952A (en) * | 2017-09-22 | 2017-12-19 | 中南大学 | A kind of combination treatment method of the residual beneficiation wastewater containing xanthate |
| CN109070095A (en) * | 2016-02-24 | 2018-12-21 | 桑科能源股份有限公司 | The processing of thick fine tailings including chemical immobilization, polymer flocculation and dehydration |
| CN111018194A (en) * | 2019-12-31 | 2020-04-17 | 南华大学 | A kind of treatment and reuse method of nickel-molybdenum ore beneficiation wastewater |
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Application publication date: 20140409 |