CN103495507B - A kind of desorbing agent for microfine iron ore reverse flotation and application thereof - Google Patents
A kind of desorbing agent for microfine iron ore reverse flotation and application thereof Download PDFInfo
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- CN103495507B CN103495507B CN201310473403.3A CN201310473403A CN103495507B CN 103495507 B CN103495507 B CN 103495507B CN 201310473403 A CN201310473403 A CN 201310473403A CN 103495507 B CN103495507 B CN 103495507B
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- carboxymethyl cellulose
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Abstract
The invention provides a kind of desorbing agent for microfine iron ore reverse flotation and application thereof, it is characterized in that, it is made up of following raw material components by weight: waterglass 35 ~ 45 parts, carboxymethyl cellulose 4 ~ 6 parts, polycarboxylate 6 ~ 10 parts.Desorbing agent of the present invention, waterglass and carboxymethyl cellulose can increase the electrostatic repulsion between ore particle, and play strong peptizaiton to ore particle, make ore particle especially fine mineral particle stable suspersion; Polycarboxylate can improve the rheological characteristic of mineral grain, can prevent particle secondary agglomeration again.This desorbing agent is applied to microfine iron ore reverse flotation process, can make micro-size fraction iron mineral, from coarse fraction gangue surface desorption, and obtains effectively suppression, thus enters into concentrate, improve the metal recovery rate of reverse flotation flowsheet, reduce flotation tailing grade.
Description
Technical field
The invention belongs to technical field of mineral processing, relate to the Synthesis and applications of iron ore dressing medicament.Especially a kind of desorbing agent for microfine iron ore reverse flotation and application thereof is related to.
Background technology
China's iron ore deposit has " poor ", " carefully ", the feature 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 are carried out, achieve plentiful and substantial technological achievement, during "the 10th five-years", the research of Anshan type lean hematite ore mineral processing technology obtains important breakthrough, classical " stage (continuously) ore grinding, thickness grading, gravity treatment, magnetic separation-anion reverse floatation technique ", obtain large-scale application at home, production and technical indication is reached the international leading level, greatly promote China's lean hematite ore technique of preparing progress, make the Anshan type lean hematite ore resource accounting for state-owned iron ore reserves nearly 1/3, obtain efficient and rational development and utilization.But along with mine is to deep mining, the poor thin hydridization degree of ore obviously increases, day by day harsh for ore deposit condition; sort difficulty and strengthen gradually, technique is subject to test in various degree to ore properties adaptability, most distinct issues are; anion reverse floatation technological process flotation tailing grade constantly raises; the tailings grade of whole flow process is raised, and metal recovery rate is lower, causes a large amount of metal loss.The particulate iron ore reserves about 3,000,000,000 ~ 4,000,000,000 tons that China is similar, this kind of iron ore disseminated grain size is fine, difficult tribulation sorting.
About the technical barrier of microfine floatation of iron ore, still there is no effective way at present.From production practices, inventor is by repeatedly technique examination analysis, and draw according to a large amount of up-to-date experimental study: in floatation process, the Ultra-fine iron minerals that part liberation degree of minerals is higher, be adsorbed onto coarse granule gangue mineral surface, formed " carrier flotation " and enter into mine tailing, cause that flotation tailing Iron grade is higher, metal recovery rate is on the low side.
For solving this difficult problem, the present inventor has carried out lot of experiments and study mechanism to desorption technology, determines composition and the composition of desorbing agent, for improving microfine iron ore flotation technical indicator, have found new way, significant to the comprehensive development and utilization and technique of preparing progress promoting microfine iron ore.
Summary of the invention
The object of this invention is to provide a kind of desorbing agent for microfine iron ore reverse flotation.
Another object of the present invention is to provide a kind of application of the desorbing agent for microfine iron ore reverse flotation.
According to the desorbing agent for microfine iron ore reverse flotation of the present invention, it is characterized in that, it is made up of following raw material components by weight:
Waterglass 35 ~ 45 parts, carboxymethyl cellulose 4 ~ 6 parts, polycarboxylate 6 ~ 10 parts,
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 microfine iron ore reverse flotation of the present invention, it is characterized in that, it is made up of following raw material components by weight:
Waterglass 40 ~ 42 parts, carboxymethyl cellulose 4 ~ 6 parts, polycarboxylate 7 ~ 9 parts,
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 microfine iron ore reverse flotation of the present invention, it is characterized in that, it is made up of following raw material components by weight:
Waterglass 40 parts, carboxymethyl cellulose 5 parts, polycarboxylate 8 parts,
Wherein, modulus of water glass is 1; Carboxymethyl cellulose viscosity 800 ~ 1200mPas, substitution value >=0.9; Polycarboxylate molecular weight 3000 ~ 4000, solid content 40%.
According to the application of the desorbing agent for microfine iron ore reverse flotation of the present invention, it is characterized in that, during for reverse flotation, first respectively described part by weight raw material components is dissolved, then mix, add water make by mass concentration be 0.04 ~ 0.06% desorbing agent solution application.
Described waterglass is molecular formula is Na
2siO
3sodium silicate aqueous solution.
Waterglass and carboxymethyl cellulose can increase the electrostatic repulsion between ore particle, and play strong peptizaiton to ore particle, make ore particle especially fine mineral particle stable suspersion; Polycarboxylate can improve the rheological characteristic of mineral grain, can prevent particle secondary agglomeration again; This desorbing agent can make micro-size fraction iron mineral, from coarse fraction gangue surface desorption, and obtains effectively suppression, thus enter into concentrate, improve the metal recovery rate of reverse flotation flowsheet, reduce flotation tailing grade, reduce finely-divided metal to run off, make floatation process more efficient, improve resource utilization.
Using method: regulate pH 11.5 ~ 12 as adjusting agent at NaOH, starch is as iron mineral inhibitor, calcium oxide is as quartzy activator, enuatrol is as in the anion reverse floatation process system of collecting agent, add place and roughly select operation, after order of addition is pH adjusting agent, before iron mineral inhibitor, addition is 480 ~ 560 grams/ton.
Flotation recovery rate can be made to improve 5 ~ 8%, and flotation tailing grade reduces by 3 ~ 5%.
Described enuatrol, molecular formula is C
18h
33o
2na, has another name called oleate soap, octadecanoid acid sodium or odium stearate.
Detailed description of the invention
Embodiment:
With certain Anshan type microfine lean hematite ore for sample ore, the test situation of embodiment of the present invention product is specifically described.
This ore adopts gravity treatment-magnetic separation-anion reverse floatation joint process on producing, 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 flotation tailing grade is up to 24.02%, causing comprehensive tailings grade higher because flotation tailing grade is higher is 17.75%, causes the waste of iron resource.
For the problem that reverse flotation Iron Grade of Tailings, iron recovery are higher, namely the flotation of getting in production procedure mixes magnetic concentrate to ore deposit, carries out the desorbing agent adding 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, content of MgO 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 is made up of following raw material components by weight:
Waterglass 35 ~ 45 parts, carboxymethyl cellulose 4 ~ 6 parts, polycarboxylate 6 ~ 10 parts,
Optimum proportioning is by weight: waterglass 40 parts, carboxymethyl cellulose 5 parts, low-molecular-weight polycarboxylate 8 parts,
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 is by weight ratio 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, dissolves described part by weight raw material components first respectively, then mixes, add water make by mass concentration be 0.04 ~ 0.06% the application of desorbing agent solution.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 iron mineral inhibitor, calcium oxide is as quartzy activator, enuatrol is as in the anion reverse floatation process system of collecting agent, add place and roughly select operation, after order of addition is pH adjusting agent, before iron mineral inhibitor, addition 480 ~ 560 grams/ton.During test, optimum addition 530 grams/ton.
In open-circuit condition experimental basis, carry out flotation closed-circuit test, adopt the flow process that a thick essence three is swept, add the embodiment desorbing agent of two kinds of composition different ratio, and do not add the comparative example of desorbing agent, 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 example
Upper watch test result shows, do not add the closed-circuit test comparative example index of desorbing agent, compared with adopting the product of the embodiment of the present invention, under the prerequisite that final concentrate Iron grade is suitable, iron recovery improves 5.24 ~ 7.58%, and Iron Grade of Tailings reduces by 3.02 ~ 4.73%, illustrate in rougher process, add the desorbing agent of the embodiment of the present invention, can effectively improve concentrate iron recovery, reduce Iron Grade of Tailings.
Claims (4)
1. for a desorbing agent for microfine iron ore reverse flotation, it is characterized in that, it is made up of following raw material components by weight:
Waterglass 35 ~ 45 parts, carboxymethyl cellulose 4 ~ 6 parts, polycarboxylate 6 ~ 10 parts, 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 microfine iron ore reverse flotation according to claim 1, is characterized in that, it is made up of following raw material components by weight:
Waterglass 40 ~ 42 parts, carboxymethyl cellulose 4 ~ 6 parts, polycarboxylate 7 ~ 9 parts, 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 microfine iron ore reverse flotation according to claim 1, is characterized in that, it is made up of following raw material components by weight:
Waterglass 40 parts, carboxymethyl cellulose 5 parts, polycarboxylate 8 parts, 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. the application of the desorbing agent for microfine iron ore reverse flotation according to any one of claims 1 to 3, it is characterized in that, during for reverse flotation, first by weight raw material components is dissolved respectively, then mix, add water make by mass concentration be 0.04 ~ 0.06% desorbing agent solution application.
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Citations (3)
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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 |
| 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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| EP2533904A1 (en) * | 2010-02-12 | 2012-12-19 | Cytec Technology Corp. | Flocculant compositions containing silicon-containing polymers |
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Patent Citations (3)
| 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 |
| 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 |
|---|
| 微细粒钛铁矿浮选理论与技术研究;朱阳戈;《中国博士学位论文全文数据库 工程科技Ⅰ辑》;20130215(第2期);论文正文第6.2节 * |
| 鞍钢齐大山铁矿选矿分厂浮选尾矿品位偏高原因分析;李丽匣等;《矿产保护与利用》;20130825(第4期);第3.6节 * |
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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. |
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