CN105478243A - Novel inhibitor for bauxite beneficiation and using method thereof - Google Patents

Novel inhibitor for bauxite beneficiation and using method thereof Download PDF

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Publication number
CN105478243A
CN105478243A CN201510798939.1A CN201510798939A CN105478243A CN 105478243 A CN105478243 A CN 105478243A CN 201510798939 A CN201510798939 A CN 201510798939A CN 105478243 A CN105478243 A CN 105478243A
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China
Prior art keywords
bauxite
inhibitor
consumption
flotation
new inhibitor
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CN201510798939.1A
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CN105478243B (en
Inventor
刘长淼
卫敏
吴东印
吕子虎
冯安生
赵登魁
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Zhengzhou Institute of Multipurpose Utilization of Mineral Resources CAGS
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Zhengzhou Institute of Multipurpose Utilization of Mineral Resources CAGS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/014—Organic compounds containing phosphorus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/06—Depressants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores
    • B03D2203/04—Non-sulfide ores

Abstract

The invention discloses a novel inhibitor for bauxite beneficiation and a using method thereof. The inhibitor is a modified phosphate, and the main component of the inhibitor is ethylenediamine tetramethylene phosphonic acid pentasodium or ethylenediamine tetramethylene phosphonic acid pentapotassium. The using method comprises the following steps: when the bauxite direct flotation is carried out, the bauxite grinding product with the aluminum-silicon ratio of 3-5 has the granularity property of minus 0.074mm and accounts for 80-90%, the pH value of a flotation system is controlled to be 9-11, sodium oleate is used as a collecting agent, the using amount is 500-1200g/t, and the using amount of the inhibitor is 60-70 g/t. The application of the invention in the bauxite direct flotation desilication process can enhance the selective inhibition effect on the silicon-containing minerals and enhance the inhibition effect on the inevitable ions (Ca)2+、Mg2+Etc.) of a plurality of different types of electronic devicesAnd the direct flotation effect of bauxite is improved.

Description

A kind of new inhibitor for ore concentration of bauxite and using method thereof
Technical field
The present invention relates to Mineral Processing Engineering field, particularly a kind of new inhibitor for ore concentration of bauxite and using method thereof, belong to comprehensive utilization of resources engineering.
Background technology
China's bauxite resource belongs to diaspore type bauxite mostly, and wherein alumina silica ratio is greater than the high-quality bauxite ratio of 7 seldom, and the diaspore type bauxite alumina silica ratio of more than 80% is all less than 7, and the bauxite of alumina silica ratio 3-5 accounts for the overwhelming majority.This part resource must carry out desiliconization, enrichment and upgrading by beneficiation method, makes alumina silica ratio be greater than 7, thus can meet the Minimum requirements of lime-Bayer process.Floatation is the main method of ore dressing and desiliconizing, and direct flotation the most successful current a kind of bauxite floating method beyond doubt.During bauxite forward flotation, according to the essential mineral compositing characteristic of diaspore type bauxite, adopt sodium carbonate as pH values of pulp inhibitor, adopt waterglass, calgon, Quadrafos etc. as the inhibitor of aluminium silicate mineral, adopt oxidized paraffin wax soap or enuatrol as collecting agent, diaspore in ore and rich intergrowth are selected, thus realizes the flotation desilication of bauxite.
In bauxite forward flotation process, in the Selective depression of the siliceous minerals such as kaolinite, pyrophillite, illite and ore pulp, the elimination of unavoidable ion plays decisive role by the direct flotation of bauxite.The effect of inhibitor efficiently suppresses siliceous mineral and eliminates unavoidable ion impact, do not cause suppression again to diaspore simultaneously.
At present, mainly use waterglass, calgon, Quadrafos etc. as the inhibitor of siliceous mineral in bauxite forward flotation, these inhibitor also can play the effect of reacting with unavoidable ion simultaneously.But the major defect of these inhibitor is: large usage quantity, also inhibitory action is had to diaspore, particularly under large consumption condition, often stronger to the suppression of diaspore, thus cause the decline of the Al2O3 rate of recovery, simultaneously the inhibitor such as calgon is completed by complexing the elimination of unavoidable ion in ore pulp, often needs to consume a large amount of calgons, effect is also general, thus causes direct flotation effect general.
Summary of the invention
In order to overcome above defect, the invention provides a kind of new inhibitor for ore concentration of bauxite and using method thereof, apply the present invention to, in bauxite direct-flotation desiliconisation technique, the selective inhibitory to siliceous mineral can be strengthened, strengthen unavoidable ion (Ca simultaneously 2+, Mg 2+deng) elimination ability, improve the effect of bauxite forward flotation.
For realizing above object, the technical solution adopted in the present invention is: a kind of new inhibitor for ore concentration of bauxite, it is that one has modified phosphate, and main component is ethylene diamine tetra methylene phosphonic acid five sodium or ethylene diamine tetra methylene phosphonic acid five potassium, and its structural formula is:
or
A kind of using method of the new inhibitor for ore concentration of bauxite, when carrying out bauxite forward flotation, the bauxite Milling product granularity character of alumina silica ratio 3-5 accounts for 80-90% for-0.074mm grade, the pH value of flotation system controls at 9-11, using enuatrol as collecting agent, consumption is 500-1200g/t, and inhibitor consumption of the present invention is 60-70g/t.
Further, when new inhibitor consumption is 60g/t, for the bauxite of alumina silica ratio 4-5, product granularity character accounts for 80%-85% for-0.074mm grade, and the basicity of flotation system controls as pH=10-11, and take enuatrol as collecting agent, consumption is at 800-1200g/t.
Further, the consumption of the described new inhibitor for ore concentration of bauxite is 60g/t.
Further, the pH value of described flotation system is 10.
Further, the consumption of described collecting agent enuatrol is 700g/t.
Beneficial effect of the present invention: 1, a kind of new inhibitor for ore concentration of bauxite of the present invention is a kind of organic composite phosphate, containing multiple organic composite phosphate radical in the molecular structure of its main component.The functional group of new inhibitor organic composite sodium phosphate (potassium) is "-CH2-PO3-", its dissolubility is extremely strong, the transparent colourless liquid of outward appearance, it is by after organic composite modification, the Molecular Geometries of phosphate radical changes, thus chelation can be there is with aluminium silicate mineral surface, and greatly strengthen selective inhibitory, then general to the inhibitory action of diaspore;
Employing the present invention suppresses the aluminium silicate mineral in bauxite, by efficient chelating inhibitory action, the aluminium silicate minerals such as kaolinite, illite, pyrophillite can be suppressed by effective as selective, unavoidable cation in ore pulp can be eliminated efficiently on the impact of flotation effect simultaneously, promote effectively being separated of diaspore and siliceous mineral.
2, multiple functional group "-CH2-PO3-" is contained in its molecular structure while, these functional groups can directly and the cation such as Ca2+, Mg2+ react, considerably increase the elimination ability to unavoidable ion in ore pulp, effectively can eliminate the impact of unavoidable ion, thus improve the effect of bauxite forward flotation.
3, to the bauxite of alumina silica ratio about 3-5, when other process conditions are identical, after adopting the present invention, compared with conventional inhibitor calgon, concentrate alumina silica ratio 1-2 can be improved, improve Al 2o 3rate of recovery 15-20%.
Detailed description of the invention
In order to make those skilled in the art understand technical scheme of the present invention better, describe the present invention below in conjunction with specific embodiment, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.
Example 1:
For a new inhibitor for ore concentration of bauxite, it is that one has modified phosphate, and main component is ethylene diamine tetra methylene phosphonic acid five sodium, and its structural formula is:
Little Guan mining area, Henan bauxite, sample ore composition is in table 1.
Table 1 raw ore chemistry multielement analysis
Element Al 2O 3 SiO 2 Fe 2O 3 TiO 2 CaO MgO K 2O Na 2O S A/S
Content (%) 58.85 11.79 10.86 2.65 0.68 0.29 1.34 0.078 0.22 4.99
Direct floatation process system is: bauxite Milling product granularity character accounts for 85% for-0.074mm grade, the basicity of flotation system controls as pH=10, and take enuatrol as collecting agent, consumption is at 500-800g/t, inhibitor consumption is 60g/t, and beneficiation flowsheet is one roughing open circuit flow process.With conventional inhibitor calgon for contrast, result of the test is in table 2.
Table 2 inhibitor comparative test result
Result of the test shows, adopt inhibitor of the present invention (organically-modified phosphate), the selective inhibitory to siliceous mineral can be strengthened significantly, promote floatation process index, the alumina silica ratio of rough concentrate brings up to 8.56 from 8.29, and alumina recovery rate brings up to 76.18% from 53.12%.
Embodiment 2:
For a new inhibitor for ore concentration of bauxite, it is that one has modified phosphate, and main component is ethylene diamine tetra methylene phosphonic acid five potassium, and its structural formula is:
Little Guan mining area, Henan bauxite, sample ore composition is in table 1.
Direct floatation process system is: bauxite Milling product granularity character accounts for 85% for-0.074mm grade, the basicity of flotation system controls as pH=9, and take enuatrol as collecting agent, consumption is at 700-1100g/t, inhibitor consumption is 70g/t, and beneficiation flowsheet is one roughing open circuit flow process.With conventional inhibitor calgon for contrast, result of the test is in table 2.
Table 2 inhibitor comparative test result
Result of the test shows, adopt inhibitor of the present invention (organically-modified phosphate), the selective inhibitory to siliceous mineral can be strengthened significantly, promote floatation process index, the alumina silica ratio of rough concentrate brings up to 8.58 from 8.09, and alumina recovery rate brings up to 76.21% from 54.12%.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.
Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above example just understands method of the present invention and core concept thereof for helping.The above is only the preferred embodiment of the present invention, should be understood that, due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, some improvement, retouching or change can also be made, also above-mentioned technical characteristic can be combined by rights; These improve retouching, change or combination, or the design of invention and technical scheme are directly applied to other occasion without improving, and all should be considered as protection scope of the present invention.

Claims (6)

1. for a new inhibitor for ore concentration of bauxite, it is characterized in that: it is that one has modified phosphate, main component is ethylene diamine tetra methylene phosphonic acid five sodium or ethylene diamine tetra methylene phosphonic acid five potassium, and its structural formula is:
2. the using method for the new inhibitor of ore concentration of bauxite as claimed in claim 1, it is characterized in that: when carrying out bauxite forward flotation, the bauxite Milling product granularity character of alumina silica ratio 3-5 accounts for 80-90% for-0.074mm grade, the pH value of flotation system controls at 9-11, using enuatrol as collecting agent, consumption is 500-1200g/t, and inhibitor consumption of the present invention is 60-70g/t.
3. the using method of the new inhibitor for ore concentration of bauxite according to claim 2, it is characterized in that, when new inhibitor consumption is 60g/t, for the bauxite of alumina silica ratio 4-5, product granularity character accounts for 80%-85% for-0.074mm grade, the basicity of flotation system controls as pH=10-11, and take enuatrol as collecting agent, consumption is at 800-1200g/t.
4. the using method of the new inhibitor for ore concentration of bauxite according to claim 2, is characterized in that: the consumption of the described new inhibitor for ore concentration of bauxite is 60g/t.
5. the using method of the new inhibitor for ore concentration of bauxite according to claim 2, is characterized in that: the pH value of described flotation system is 10.
6. the using method of the new inhibitor for ore concentration of bauxite according to claim 2, is characterized in that: the consumption of described collecting agent enuatrol is 700g/t.
CN201510798939.1A 2015-11-19 2015-11-19 Novel inhibitor for bauxite beneficiation and using method thereof Active CN105478243B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111215247A (en) * 2020-01-07 2020-06-02 中南大学 Inhibitor for high-calcium fluorite direct flotation and flotation method
CN114054212A (en) * 2021-10-21 2022-02-18 中南大学 Composite inhibitor and application thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111215247A (en) * 2020-01-07 2020-06-02 中南大学 Inhibitor for high-calcium fluorite direct flotation and flotation method
CN114054212A (en) * 2021-10-21 2022-02-18 中南大学 Composite inhibitor and application thereof

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