CN103495507A - Desorption agent for reverse flotation of micro-fine-particle iron ore and application thereof - Google Patents
Desorption agent for reverse flotation of micro-fine-particle iron ore and application thereof Download PDFInfo
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- CN103495507A CN103495507A CN201310473403.3A CN201310473403A CN103495507A CN 103495507 A CN103495507 A CN 103495507A CN 201310473403 A CN201310473403 A CN 201310473403A CN 103495507 A CN103495507 A CN 103495507A
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Abstract
The invention provides a desorption agent for reverse flotation of micro-fine-particle iron ore and application thereof. The desorption agent is characterized by being composed, by weight, 35-45 parts of water glass, 4-6 parts of carboxymethyl cellulose and 6-10 parts of polycarboxylate. According to the desorption agent, the water glass and the carboxymethyl cellulose can increase electrostatic repulsion among ore particles and have the strong dispersion function on the ore particles so that the ore particles especially the micro-fine ore particles can be stably suspended. The polycarboxylate can improve the rheological property of the ore particles and avoid secondary agglomeration of the particles. The desoprtion agent is used in a micro-fine-particle iron ore reverse flotation process, desorption of micro-fine-fraction iron minerals from the surfaces of coarse-fraction gangue minerals can be achieved, and the micro-fine-fraction iron minerals are effectively inhibited. Thus, the micro-fine-fraction iron minerals enter concentrate, the metal recovery rate of the reverse floatation process is improved, and the flotation tailing grade is reduced.
Description
Technical field
The invention belongs to technical field of mineral processing, relate to preparation and the application of iron ore dressing medicament.Especially relate to a kind of desorbing agent for the microfine iron ore reverse flotation and application thereof.
Background technology
China's iron ore deposit has " poor ", " carefully ", the characteristics of " mixing ", the lean hematite proportion of complicated difficult choosing is larger, for reasonably developing iron ore deposit, improve the level of resources utilization, numerous dressers author for many years, around carrying iron, general labourer's work falls, many explorations have been carried out, obtained plentiful and substantial technological achievement, during "the 10th five-years", the technical research of Anshan type lean hematite ore ore-dressing technique obtains important breakthrough, classical " stage (continuously) ore grinding, thickness grading, gravity treatment, magnetic separation-anion reverse floatation technique ", obtain at home large-scale application, production and technical indication is reached the international leading level, greatly promoted China's lean hematite ore technique of preparing progress, make to account for the Anshan type lean hematite ore resource of state-owned iron ore reserves nearly 1/3, obtain efficient and rational development and utilization.Yet along with mine to deep mining, the poor thin hydridization degree of ore obviously increases, day by day harsh for the ore deposit condition; that sort difficulty and strengthen gradually, technique is subject to test in various degree to ore properties adaptability, distinct issues are; anion reverse floatation technological process flotation tailing grade constantly raises; make the tailings grade of whole flow process raise, and metal recovery rate is lower, causes a large amount of metal losses.Approximately 3,000,000,000～4,000,000,000 tons of China's similar particulate iron ore reserves, this class iron ore disseminated grain size is fine, difficult tribulation sorting.
About the technical barrier of microfine floatation of iron ore, still there is no at present effective way.From production practices, the inventor is by repeatedly technique examination analysis, and draw according to a large amount of up-to-date experimental studies: in floatation process, the higher Ultra-fine iron minerals of part liberation degree of minerals, be adsorbed onto coarse granule gangue mineral surface, form " carrier flotation " and enter into mine tailing, causing that flotation tailing iron grade is higher, metal recovery rate is on the low side.
For solving this difficult problem, the inventor has carried out lot of experiments and mechanism research to desorption technology, determines composition and the composition of desorbing agent, for improving microfine iron ore flotation technical indicator, found new way, significant to comprehensive development and utilization and the technique of preparing progress that promotes the microfine iron ore.
Summary of the invention
The purpose of this invention is to provide a kind of desorbing agent for the microfine iron ore reverse flotation.
Another object of the present invention is to provide a kind of application of the desorbing agent for the microfine iron ore reverse flotation.
According to the desorbing agent for the microfine iron ore reverse flotation of the present invention, it is characterized in that, it is to consist of following raw material components by weight:
35～45 parts of waterglass, 4～6 parts of carboxymethyl celluloses, 6～10 parts of polycarboxylates,
Wherein, modulus of water glass is 1～2; Carboxymethyl cellulose viscosity 800～1200mPas, substitution value >=0.9; Polycarboxylate molecular weight 3000～4000, solid content 40%.
According to the desorbing agent for the microfine iron ore reverse flotation of the present invention, it is characterized in that, it is to consist of following raw material components by weight:
40～42 parts of waterglass, 4～6 parts of carboxymethyl celluloses, 7～9 parts of polycarboxylates,
Wherein, modulus of water glass is 1～2; Carboxymethyl cellulose viscosity 800～1200mPas, substitution value >=0.9; Polycarboxylate molecular weight 3000～4000, solid content 40%.
According to the desorbing agent for the microfine iron ore reverse flotation of the present invention, it is characterized in that, it is to consist of following raw material components by weight:
40 parts of waterglass, 5 parts of carboxymethyl celluloses, 8 parts of polycarboxylates,
Wherein, modulus of water glass is 1; Carboxymethyl cellulose viscosity 800～1200mPas, substitution value >=0.9; Polycarboxylate molecular weight 3000～4000, solid content 40%.
Application according to the desorbing agent for the microfine iron ore reverse flotation of the present invention, it is characterized in that, during for reverse flotation, at first respectively described part by weight raw material components is dissolved, then mix, add the water desorbing agent solution application that to make by mass concentration be 0.04～0.06%.
Described waterglass is that molecular formula is Na
2siO
3sodium silicate aqueous solution.
Waterglass and carboxymethyl cellulose can increase the electrostatic repulsion between ore particle, and ore particle is played to strong peptizaiton, make especially fine mineral particle stable suspersion of ore particle; Polycarboxylate can improve the rheological characteristic of mineral grain, can prevent the particle secondary agglomeration again; This desorbing agent can make the micro-size fraction iron mineral, from coarse fraction gangue surface desorption, and obtains effectively inhibition, thereby enter into concentrate, improve the metal recovery rate of reverse flotation flowsheet, reduce the flotation tailing grade, reduce finely-divided metal and run off, make floatation process more efficient, improve resource utilization.
Using method: at NaOH, as adjusting agent, regulate pH 11.5～12, starch is as the iron mineral inhibitor, calcium oxide is as quartzy activator, in the anion reverse floatation process system of enuatrol as collecting agent, add place roughly selecting operation, order of addition is after the pH adjusting agent, and before the iron mineral inhibitor, addition is 480～560 grams/ton.
Can make flotation recovery rate improve 5～8%, the flotation tailing grade reduces by 3～5%.
Described enuatrol, molecular formula is C
18h
33o
2na, have another name called oleate soap, octadecanoid acid sodium or odium stearate.
The specific embodiment
Embodiment:
Take certain Anshan type microfine lean hematite ore is sample ore, and the test situation of embodiment of the present invention product is specifically described.
Adopt gravity treatment-magnetic separation-anion reverse floatation joint process in this ore production, the closed circuit flow process that reverse floatation process adopts a thick essence three to sweep, flotation concentrate iron grade can reach 66.04%, and the flotation tailing grade is up to 24.02%, because the flotation tailing grade is higher, causing comprehensive tailings grade higher is 17.75%, has caused the waste of iron resource.
For reverse flotation Iron Grade of Tailings, the higher problem of iron recovery, the flotation of getting in production procedure mixes magnetic concentrate to ore deposit, is added the desorbing agent of the embodiment of the present invention, the contrast float test of front and back.Flotation is as shown in table 1 to the chemical composition analysis result in ore deposit, Al in sample ore
2o
3, CaO, MgO content is all fewer, hazardous elements S, P content trace.
Table 1 flotation is to ore deposit chemical composition analysis result (%)
| Component | TFe | FeO | SiO 2 | Al 2O 3 | CaO | MgO | S | P |
| Content | 43.93 | 9.5 | 32.38 | 0.71 | 0.44 | 0.74 | 0.035 | 0.038 |
The desorbing agent of embodiment consists of following raw material components by weight:
35～45 parts of waterglass, 4～6 parts of carboxymethyl celluloses, 6～10 parts of polycarboxylates,
Best proportioning by weight is: 40 parts of waterglass, 5 parts of carboxymethyl celluloses, and 8 parts of low-molecular-weight polycarboxylates,
Wherein, modulus of water glass is 1～2; Carboxymethyl cellulose viscosity 800～1200mPas, substitution value >=0.9; Polycarboxylate molecular weight 3000～4000, solid content 40%.During test, best modulus of water glass is 1.
Each embodiment desorbing agent by weight ratio is in Table 2.
Table 2 embodiment 1～12 desorbing agent by weight ratio
| Embodiment | Waterglass | Carboxymethyl cellulose | Polycarboxylate |
| 1 | 35 | 4 | 6 |
| 2 | 35 | 5 | 8 |
| 3 | 35 | 6 | 10 |
| 4 | 40 | 4 | 6 |
| 5 | 40 | 5 | 8 |
| 6 | 40 | 6 | 10 |
| 7 | 42 | 4 | 6 |
| 8 | 42 | 5 | 8 |
| 9 | 42 | 6 | 10 |
| 10 | 45 | 4 | 6 |
| 11 | 45 | 5 | 8 |
| 12 | 45 | 6 | 10 |
Preparation method: during for reverse flotation, at first respectively described part by weight raw material components is dissolved, then mix, add the water desorbing agent solution application that to make by mass concentration be 0.04～0.06%.During test, the best compound concentration of desorbing agent solution is 0.05%.
Using method: be applied to NaOH and regulate pH 11.5～12 as adjusting agent, starch is as the iron mineral inhibitor, calcium oxide is as quartzy activator, in the anion reverse floatation process system of enuatrol as collecting agent, add place roughly selecting operation, order of addition is after the pH adjusting agent, before the iron mineral inhibitor, and addition 480～560 grams/ton.During test, optimum addition 530 grams/ton.
On the open-circuit condition experimental basis, carry out the flotation closed-circuit test, the flow process that adopts a thick essence three to sweep, add the embodiment desorbing agent of the different proportionings of two kinds of compositions, and do not add the Comparative Examples of desorbing agent, and the result of the test obtained when other dosing is identical is in Table 3
The float test index (%) of table 3 embodiment and Comparative Examples
Upper watch test result shows, do not add the closed-circuit test Comparative Examples index of desorbing agent, with the product that adopts the embodiment of the present invention, compare, in final concentrate iron grade, under suitable prerequisite, iron recovery has improved 5.24～7.58%, and Iron Grade of Tailings reduces by 3.02～4.73%, explanation is in rougher process, add the desorbing agent of the embodiment of the present invention, can effectively improve the concentrate iron recovery, reduce Iron Grade of Tailings.
Claims (4)
1. the desorbing agent for the microfine iron ore reverse flotation, is characterized in that, it is to consist of following raw material components by weight:
35～45 parts of waterglass, 4～6 parts of carboxymethyl celluloses, 6～10 parts of polycarboxylates,
Wherein, modulus of water glass is 1～2; Carboxymethyl cellulose viscosity 800～1200mPas, substitution value >=0.9; Polycarboxylate molecular weight 3000～4000, solid content 40%.
2. the desorbing agent for the microfine iron ore reverse flotation according to claim 1, is characterized in that, it is to consist of following raw material components by weight:
40～42 parts of waterglass, 4～6 parts of carboxymethyl celluloses, 7～9 parts of polycarboxylates,
Wherein, modulus of water glass is 1～2; Carboxymethyl cellulose viscosity 800～1200mPas, substitution value >=0.9; Polycarboxylate molecular weight 3000～4000, solid content 40%.
3. the desorbing agent for the microfine iron ore reverse flotation according to claim 1, is characterized in that, it is to consist of following raw material components by weight:
40 parts of waterglass, 5 parts of carboxymethyl celluloses, 8 parts of polycarboxylates,
Wherein, modulus of water glass is 1; Carboxymethyl cellulose viscosity 800～1200mPas, substitution value >=0.9; Polycarboxylate molecular weight 3000～4000, solid content 40%.
4. according to the application of the described desorbing agent for the microfine iron ore reverse flotation of claim 1～3, it is characterized in that, during for reverse flotation, at first respectively described part by weight raw material components is dissolved, then mix, add the water desorbing agent solution application that to make by mass concentration be 0.04～0.06%.
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Citations (4)
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|---|---|---|---|---|
| CN101439317A (en) * | 2008-12-17 | 2009-05-27 | 中国铝业股份有限公司 | Pre-desiliconisation method for ore concentration of bauxite |
| CN102392125A (en) * | 2011-10-25 | 2012-03-28 | 内蒙古科技大学 | Technology for recovering iron ore concentrate and coke powder from blast furnace gas dust or gas sludge |
| US20130048571A1 (en) * | 2010-02-12 | 2013-02-28 | Cytec Technology Corp. | Flocculant compositions containing silicon-containing polymers |
| CN103316770A (en) * | 2013-05-23 | 2013-09-25 | 包钢集团矿山研究院（有限责任公司） | Mineral processing technology for recycling fluorite from baotite, magnetite and tailing |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439317A (en) * | 2008-12-17 | 2009-05-27 | 中国铝业股份有限公司 | Pre-desiliconisation method for ore concentration of bauxite |
| US20130048571A1 (en) * | 2010-02-12 | 2013-02-28 | Cytec Technology Corp. | Flocculant compositions containing silicon-containing polymers |
| CN102392125A (en) * | 2011-10-25 | 2012-03-28 | 内蒙古科技大学 | Technology for recovering iron ore concentrate and coke powder from blast furnace gas dust or gas sludge |
| CN103316770A (en) * | 2013-05-23 | 2013-09-25 | 包钢集团矿山研究院（有限责任公司） | Mineral processing technology for recycling fluorite from baotite, magnetite and tailing |
Non-Patent Citations (2)
| Title |
|---|
| 朱阳戈: "微细粒钛铁矿浮选理论与技术研究", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》, no. 2, 15 February 2013 (2013-02-15), pages 021 - 11 * |
| 李丽匣等: "鞍钢齐大山铁矿选矿分厂浮选尾矿品位偏高原因分析", 《矿产保护与利用》, no. 4, 25 August 2013 (2013-08-25), pages 11 - 15 * |
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Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Anshan Iron & Steel Group Mining Co., Ltd. |