CN100348332C - Bauxite positive flotation headings three-phase foam removing method - Google Patents
Bauxite positive flotation headings three-phase foam removing method Download PDFInfo
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- CN100348332C CN100348332C CNB2005101240145A CN200510124014A CN100348332C CN 100348332 C CN100348332 C CN 100348332C CN B2005101240145 A CNB2005101240145 A CN B2005101240145A CN 200510124014 A CN200510124014 A CN 200510124014A CN 100348332 C CN100348332 C CN 100348332C
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- 239000006260 foam Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005188 flotation Methods 0.000 title claims abstract description 26
- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 25
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 13
- 238000004062 sedimentation Methods 0.000 claims description 26
- 239000002245 particle Substances 0.000 claims description 12
- 238000005189 flocculation Methods 0.000 claims description 11
- 230000016615 flocculation Effects 0.000 claims description 11
- 230000008021 deposition Effects 0.000 claims description 8
- 239000008394 flocculating agent Substances 0.000 claims description 8
- 239000012141 concentrate Substances 0.000 abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 230000018044 dehydration Effects 0.000 abstract description 13
- 238000006297 dehydration reaction Methods 0.000 abstract description 13
- 229910001648 diaspore Inorganic materials 0.000 abstract description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 7
- 239000011707 mineral Substances 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 34
- 239000000463 material Substances 0.000 description 15
- 238000007667 floating Methods 0.000 description 11
- 230000003311 flocculating effect Effects 0.000 description 9
- 230000008676 import Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 235000010755 mineral Nutrition 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000013530 defoamer Substances 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229910052900 illite Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- CYPPCCJJKNISFK-UHFFFAOYSA-J kaolinite Chemical compound [OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[O-][Si](=O)O[Si]([O-])=O CYPPCCJJKNISFK-UHFFFAOYSA-J 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Abstract
The present invention discloses a bauxite positive flotation ore concentrate three-phase foam removing method which relates to a floatation ore concentrate dewatering three-phase foam removing method in a beneficiating process, particularly to a diaspore direct flotation ore concentrate dewatering three-phase foam removing method in a floatation process that diaspore type bauxite is used as a raw material. The bauxite positive flotation ore concentrate three-phase foam removing method comprises the following steps: leading out three-phase foam in conventional settling dehydration from a settling dehydrating device; then, adding water to dilute to a dry ore of which the mass concentration is from 10% to 20%; finally, adding flocculant accounting for 0.01/1000 to 0.1/1000 of the dry ore to make granules flocculent and settlement. Thus, the foam removal can be realized. The flocculant added in the process is negative ion type polyacrylamide. The molecular weight of the flocculant is from 2, 000, 000 to 80, 000, 000, and the optimum value is from 2, 000, 000 to 4, 000, 000. The present invention has the obvious advantages of simple operation, complete foam removal, etc.; the water quality is increased; the recovery rate of useful minerals is increased.
Description
Technical field
Bauxite positive flotation headings three-phase foam removing method relates to ore dressing process flotation concentrate dehydration debubbling method, and especially relating to employing is in the floatation process of raw material with the diaspore type bauxite, the debubbling method of diaspore direct flotation essence mine dehydration.
Background technology
In industrial production such as papermaking, coating, weaving, food, pharmacy and petrochemistry, can produce a large amount of foams for various reasons, production can not normally be carried out, or product quality is affected.People are normal to adopt and leaves standstill, reduces pressure (vacuumizing), heats or ways such as pressurization, ultrasonic wave, adding defoamer, mechanical agitation are eliminated foam.This foam is mainly based on gas, liquid two-phase foam.
So-called three-phase froth is meant and has more solid fine grained in the foam, forms the combination of solid, liquid, vapour three-phase, has hindered the loss that annexs mutually and stoped liquid film between bubble.Compare with common gas, liquid two-phase foam, more firm.
The three-phase froth technology can be used for fire extinguishing, but in ore dressing, the ore particle surface is adsorbed with collecting agent, with the foaming agent interaction of molecules, as the hedge that is compiled into, has increased the mechanical strength of walls at bubble surface, common mechanical defoaming difficulty.Money is given as security woods, Zhang Hong and the people such as is eaten and the mistake in the Collophanite flotation process is stablized the three-phase froth foam study.They think: the firm interfacial film with certain flexible similar " brick wall " structure that the interaction of fatty acid medicament and the hydrophobic ore particle of microfine forms if this kind film does not have the effect of external force, is difficult to vanish voluntarily.
If foam is not eliminated, will increase the conveying and the dehydration difficulty of flotation concentrate slurry, cause valuable mineral actual recovered rate to reduce simultaneously, the backwater floating material is higher, the recycling water utilization difficulty.
In flotation was produced, less for the froth breaking Study on Problems of flotation concentrate three-phase froth, Wu Liancheng studied the defoamer of sylvite flotation concentrate, proposed to add the surfactant of opposite type.They use cation-collecting agent according to the flotation of salt lake, Qinghai sylvite, and select for use anion alkylbenzenesulfonate defoamer to carry out froth breaking, have obtained success.The method froth breaking that general ore dressing plant adopts high-pressure spray to impact also has some to adopt the cofferdam foam to be fenced up the method for periodic cleaning.
In ore concentration of bauxite, diaspore is bigger than gangue mineral hardness, so when ore grinding siliceous gangue minerals such as kaolinite, illite, pyrophillite preferentially dissociate, earth, diaspore has only the back bauxite forward flotation that dissociates fully could obtain index preferably simultaneously, this has just caused the flotation concentrate granularity superfine: particle diameter less than 3um more than 10%, minimum grain size 0.13um.The viscosity height: according to mensuration, concentrate concentration was at 68% o'clock, and viscosity can reach 340 * 10
-3More than the pa.s.Have negative electrical charge: because the medicament that direct flotation adds usually is an anion sexual type fatty acid collecting agent, can cause the ore pulp surface to have certain negative electrical charge in the floatation process, according to mensuration, zeta potential is-21.232mV, electrically identical, mutually exclusive in the sedimentation between the particle.The adding of floating agent has changed mineral surfaces hydrophily difference, and diaspore becomes hydrophobic, and major part enters concentrate.In deposition dehydrating, the foam that surface flotation is a large amount of.At present, what adopt aspect the foam elimination is the water jet froth breaking, and froth breaking is insufficient, and the waste great amount of water resources, has diluted ore pulp.
Summary of the invention
The objective of the invention is in order to overcome the deficiency that above-mentioned prior art exists, provide simple, froth breaking fully, water-saving and do not dilute the bauxite positive flotation headings three-phase foam removing method of ore pulp.
Method of the present invention is achieved through the following technical solutions.
Bauxite positive flotation headings three-phase foam removing method, its feature is drawn the three-phase froth in the deposition dehydrating process of conventional bauxite forward flotation from the equipment of deposition dehydrating, adding entry then, to be diluted to the mass concentration of doing the ore deposit be 10%～20%, be incorporated as dried ore deposit again and measure 0.01 ‰～0.1 ‰ flocculant, make the particle flocculation sedimentation and froth breaking.
Bauxite positive flotation headings three-phase foam removing method of the present invention is characterized in that the flocculant that adds in the process is an anion-polyacrylamide, and molecular weight is 2,000,000～8,000 ten thousand, and optimum value is 2,000,000～4,000,000.
Method of the present invention, at first the medicament that carries by dilution three-phase froth solid phase ore particle surface enters in the aqueous solution, reduced the viscosity of foam, also has a mechanical agitation in the dilution simultaneously, reduced the adhesion strength of ore particle and foam gas-liquid film like this, in the process of dilution, foam progressively diminishes.But dilution can not froth breaking, just can utilize the flocculation of flocculant then by the adding flocculant, ore particle is separated from the gas-liquid film, flocculating setting gets off, make foam become two-phase, driven the two-phase foam in the process of particle separation simultaneously, the two-phase foam is followed shattered to pieces, has realized the complete froth breaking of three-phase froth.
Flocculant in of the present invention is an anion-polyacrylamide, molecular weight is 2,000,000～8,000 ten thousand, the molecular weight optimum value is 2,000,000～4,000,000, the flocculant type is the same with flocculant with the sedimentation of bauxite forward flotation concentrate to be anionic flocculant, this mainly by ore pulp with electrically and medicament determine.The molecular weight optimum value is a little less than the sedimentation flocculant, be foam with main based on the subparticle below the 10um, average grain diameter 8.16um, low-molecular-weight flocculant capturing ability is stronger.After molecular weight was excessive, fine particle was caught not obvious, had the following particle of fraction 1um and still stayed on the foam, and froth breaking is incomplete.Molecular weight can increase consumption after crossing and hanging down.
Because the three-phase froth amount that produces in the bauxite concentrate selection deposition dehydrating, the solid phase of pressing in the foam is calculated, and accounts for 0.1%～0.01% of total concentrate pulp solid phase, and therefore the flocculant total amount that increases newly does not seldom influence water quality.After foam was eliminated, the backwater floating material reduced, and has improved the recycling water utilization rate greatly, has saved water resource.After foam was eliminated, the valuable mineral in the foam obtained reclaiming, and has improved the valuable mineral rate of recovery.
The specific embodiment
Bauxite positive flotation headings three-phase foam removing method, carry out deposition dehydrating at first according to a conventional method, again three-phase froth is drawn from the equipment of deposition dehydrating, add entry then and be diluted to the mass concentration 10%～20% of doing the ore deposit, add to do 0.01 ‰～0.1 ‰ flocculant of ore deposit amount at last and promptly can realize froth breaking by its particle flocculation sedimentation, the flocculant that adds in the process is an anion-polyacrylamide, and molecular weight is 2,000,000～8,000 ten thousand, and optimum value is 2,000,000～4,000,000.
Concrete implementation process is earlier with scraper plate or guiding device, three-phase froth is drawn from dehydration equipment, when drawing foam, the extension overflow water is diluted to the mass concentration 10%～20% of doing the ore deposit with foam, adds the flocculant that 0.01 ‰～0.1 ‰ adding by the dried ore deposit amount of doing the ore deposit amount configures then, flocculating setting, by froth breaking, essence mine dehydration overflow floating material is reduced below the 1g/l, the foam elimination factor reaches more than 99.9%.
Embodiment 1
In peripheral transmission concentrator sedimentation bauxite concentrate selection dehydration, in the inboard cofferdam that increases of overflow launder, exceed return side 2～10cm, perforate on the cofferdam, allow foam flow out, extension overflow water on overflow pipe imports in the foam tank together, and the three-phase froth of foam quality concentration 50% is diluted to 20%.With being pumped in the concentrator feed well, adding anion-polyacrylamide with the concentrator charging and carry out flocculating setting then.The wadding 0.05 ‰ that flocculation dosage is done the ore deposit amount by combined feed adds, and the flocculating agent molecule amount is 8,000 ten thousand.Behind the froth breaking, overflow floating material 0.5g/l.
Embodiment 2
In the dehydration of subsider sedimentation concentrate bauxite concentrate selection,, exceed return side 2～10cm in the inboard cofferdam that increases of overflow launder, perforate on the cofferdam allows foam flow out extension overflow water on overflow pipe, import together in the foam tank, the three-phase froth of foam quality concentration 20% is diluted to 10%.With being pumped in the subsider feed well, adding anion-polyacrylamide with the subsider charging and carry out flocculating setting then.Flocculation dosage is done 0.05 ‰ of ore deposit amount by combined feed and is added, and the flocculating agent molecule amount is 2,000 ten thousand.Behind the froth breaking, overflow floating material 0.2g/l.
Embodiment 3
In the dehydration of high rate settling sedimentation bauxite concentrate selection, at the inboard chute that increases of overflow launder, exceed return side 2～10cm, with the rotation froth paddle foam is drawn, extension overflow water on overflow pipe, import together in the foam tank, the three-phase froth of foam quality concentration 30% is diluted to 10%.Add anion-polyacrylamide and carry out independent flocculating setting three-phase froth breaking, flocculation dosage adds by 0.01 ‰ of dried ore deposit amount, and the flocculating agent molecule amount is 2,000,000, with being pumped in the high rate settling material feeding box, carries out sedimentation with charging then.Behind the froth breaking, overflow floating material 0.02g/l.
Embodiment 4
In the dehydration of sedimentation basin sedimentation bauxite concentrate selection,, exceed return side 2～10cm at the inboard chute that increases of overflow launder, with the rotation froth paddle foam is drawn, extension overflow water on overflow pipe imports in the foam tank together, and the three-phase froth of foam quality concentration 30% is diluted to 10%.Add anion-polyacrylamide and carry out independent flocculating setting three-phase froth breaking, flocculation dosage adds by 0.05 ‰ of dried ore deposit amount, and the flocculating agent molecule amount is 4,000,000, with being pumped in the sedimentation basin material feeding box, carries out sedimentation with charging then.Behind the froth breaking, overflow floating material 0.04g/l.
Embodiment 5
In the dehydration of sedimentation basin sedimentation bauxite concentrate selection,, exceed return side 2～10cm at the inboard chute that increases of overflow launder, with the rotation froth paddle foam is drawn, extension overflow water on overflow pipe imports in the foam tank together, and the three-phase froth of foam quality concentration 60% is diluted to 10%.Add anion-polyacrylamide and carry out independent flocculating setting three-phase froth breaking, flocculation dosage adds by 0.04 ‰ of dried ore deposit amount, and the flocculating agent molecule amount is 4,000,000, with being pumped in the sedimentation basin material feeding box, carries out sedimentation with charging then.Behind the froth breaking, overflow floating material 0.04g/l.
Embodiment 6
In the dehydration of sedimentation basin sedimentation bauxite concentrate selection,, exceed return side 2～10cm at the inboard chute that increases of overflow launder, with the rotation froth paddle foam is drawn, extension overflow water on overflow pipe imports in the foam tank together, and the three-phase froth of foam quality concentration 70% is diluted to 20%.Add anion-polyacrylamide and carry out independent flocculating setting three-phase froth breaking, flocculation dosage adds by 0.01 ‰ of dried ore deposit amount, and the flocculating agent molecule amount is 4,000,000, with being pumped in the sedimentation basin material feeding box, carries out sedimentation with charging then.Behind the froth breaking, overflow floating material 0.04g/l.
Embodiment 7
In the dehydration of sedimentation basin sedimentation bauxite concentrate selection,, exceed return side 2～10cm at the inboard chute that increases of overflow launder, with the rotation froth paddle foam is drawn, extension overflow water on overflow pipe imports in the foam tank together, and the three-phase froth of foam quality concentration 50% is diluted to 20%.Add anion-polyacrylamide and carry out independent flocculating setting three-phase froth breaking, flocculation dosage adds by 0.1 ‰ of dried ore deposit amount, and the flocculating agent molecule amount is 2,000,000, with being pumped in the sedimentation basin material feeding box, carries out sedimentation with charging then.Behind the froth breaking, overflow floating material 0.03g/l.
Claims (3)
1, bauxite positive flotation headings three-phase foam removing method, its feature is drawn the three-phase froth in the deposition dehydrating process of conventional bauxite forward flotation from the equipment of deposition dehydrating, adding entry then, to be diluted to the mass concentration of doing the ore deposit be 10%～20%, be incorporated as dried ore deposit again and measure 0.01 ‰～0.1 ‰ flocculant, make the particle flocculation sedimentation and froth breaking.
2, method according to claim 1 is characterized in that the flocculant that adds in the process is an anion-polyacrylamide, and molecular weight is 2,000,000～80,000,000.
3, method according to claim 2 is characterized in that the anion-polyacrylamide flocculating agent molecule amount that adds is 2,000,000～4,000,000.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101240145A CN100348332C (en) | 2005-11-28 | 2005-11-28 | Bauxite positive flotation headings three-phase foam removing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101240145A CN100348332C (en) | 2005-11-28 | 2005-11-28 | Bauxite positive flotation headings three-phase foam removing method |
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| CN1775372A CN1775372A (en) | 2006-05-24 |
| CN100348332C true CN100348332C (en) | 2007-11-14 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962141B (en) * | 2012-12-04 | 2015-03-25 | 玉溪大红山矿业有限公司 | Overflow defoaming method for effectively preventing loss of concentrate foam and floatation device thereof |
| CN104069655A (en) * | 2014-07-05 | 2014-10-01 | 河南东大矿业股份有限公司 | Diluting antifoaming method for concentrate groove of direct-flotation concentrate bauxite pulp |
| CN107890954A (en) * | 2016-10-04 | 2018-04-10 | 湖北大峪口化工有限责任公司 | A kind of method that acid waste water defoams to collophane ore dressing |
| CN112237993B (en) * | 2020-09-17 | 2022-09-02 | 宜都兴发化工有限公司 | Method for recycling wastewater in collophanite double-reverse flotation process according to quality |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3837489A (en) * | 1972-11-24 | 1974-09-24 | Nalco Chemical Co | Molybdenum disulfide flotation antifoam |
| JPS5651821B2 (en) * | 1974-09-14 | 1981-12-08 | ||
| SU899070A1 (en) * | 1980-06-02 | 1982-01-23 | Ленинградский Ордена Ленина,Ордена Октябрьской Революции,Ордена Трудового Красного Знамени Горный Институт Им.Г.В.Плеханова | Foam suppressor |
| SU1169700A1 (en) * | 1984-02-27 | 1985-07-30 | Yurij M Glebov | Method of defoaming flotation sulfur concentrate |
| CN1097357A (en) * | 1993-06-10 | 1995-01-18 | 张怀信 | Eliminate the method for flotation concentrate mineralized froth |
-
2005
- 2005-11-28 CN CNB2005101240145A patent/CN100348332C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3837489A (en) * | 1972-11-24 | 1974-09-24 | Nalco Chemical Co | Molybdenum disulfide flotation antifoam |
| JPS5651821B2 (en) * | 1974-09-14 | 1981-12-08 | ||
| SU899070A1 (en) * | 1980-06-02 | 1982-01-23 | Ленинградский Ордена Ленина,Ордена Октябрьской Революции,Ордена Трудового Красного Знамени Горный Институт Им.Г.В.Плеханова | Foam suppressor |
| SU1169700A1 (en) * | 1984-02-27 | 1985-07-30 | Yurij M Glebov | Method of defoaming flotation sulfur concentrate |
| CN1097357A (en) * | 1993-06-10 | 1995-01-18 | 张怀信 | Eliminate the method for flotation concentrate mineralized froth |
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| CN1775372A (en) | 2006-05-24 |
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Effective date of registration: 20170524 Address after: Qixian town Henan province 454171 Xiuwu County of Zhongzhou aluminum plant Patentee after: Chalco Zhongzhou Aluminium Industry Co., Ltd. Address before: 100814, Haidian District, Fuxing Road, Beijing No. 12, China Aluminum Limited by Share Ltd Patentee before: Aluminum Corporation of China Limited |