CN1868599A - Method of flotation desulfur desilicon in bauxite - Google Patents

Method of flotation desulfur desilicon in bauxite Download PDF

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Publication number
CN1868599A
CN1868599A CNA2006100987108A CN200610098710A CN1868599A CN 1868599 A CN1868599 A CN 1868599A CN A2006100987108 A CNA2006100987108 A CN A2006100987108A CN 200610098710 A CN200610098710 A CN 200610098710A CN 1868599 A CN1868599 A CN 1868599A
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bauxite
flotation
ore
gram
consumption
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CNA2006100987108A
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CN100398216C (en
Inventor
陈湘清
李旺兴
尹中林
晏唯真
马俊伟
徐祥斌
陈志友
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China Aluminum Zhengzhou Research Institute Of Nonferrous Metals Co Ltd
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Aluminum Corp of China Ltd
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Priority to CNB2006100987108A priority Critical patent/CN100398216C/en
Publication of CN1868599A publication Critical patent/CN1868599A/en
Priority to AU2006346015A priority patent/AU2006346015B2/en
Priority to PCT/CN2006/003314 priority patent/WO2008006264A1/en
Priority to RU2009100061/03A priority patent/RU2422212C2/en
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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
    • B03D1/02—Froth-flotation processes
    • 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
    • B03D1/002—Inorganic compounds
    • 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
    • B03D1/008—Organic compounds containing oxygen
    • 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
    • B03D1/012—Organic compounds containing sulfur
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • 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
    • B03D2201/007—Modifying reagents for adjusting pH or conductivity
    • 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
    • B03D2201/02—Collectors
    • 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
    • B03D2201/04—Frothers
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A floatation process for bauxite to remove S and Si includes such steps as grinding the crude bauxite, adding the yellow catching agent B, reverse floatation for removing S, grinding, adding the match of saponified fatty acid and naphthenic acid, and forward floatation. The resultant bauxite concentrate can be used to prepare aluminum oxide by Bayer method.

Description

A kind of method of flotation desulfur desilicon in bauxite
Technical field
A kind of method of flotation desulfur desilicon in bauxite relates to a kind of method for floating of bauxite, particularly relates to a kind of desulfurization of low-grade bauxite of sulfur-bearing and the method for desiliconization.
Technical background
Bauxite is the primary raw material of aluminium industry, also is the important source material of producing refractory material, senior abrasive material, alumina cement, pottery, chemical industry, medicine.When the bauxite sulfur-bearing, the height of sulfur content no matter all has considerable influence to the technology stability of alumina producing Bayer process.Sulfide mineral in the bauxite mainly is pyrite, isomers marcasite and melnikovite, and pyrite wherein begins and alkaline reaction when 180 spend, and is decomposed by alkali lye and marcasite and melnikovite are easier, generates S 2-, SO 3 2-, SO 4 2-, S 2 2-, S 2SO 3 2-, not only cause the loss of NaOH, and S 2-, SO 4 2-Play a part dispersant, make iron enter solution, influence the settling property of red mud, the overflow muddiness with colloidal form; Simultaneously, the S in the solution 2-Make steel be subjected to obvious corrosion, make equipment easily in damage.If adopt sintering process to produce aluminium oxide, the one, energy consumption height, cost are big; The 2nd, environment and equipment generation are had a strong impact on.Therefore, high-sulfur bauxite could economic employing producing aluminium oxide by bayer after must reaching qualified requirement through desulfurization.
At present, in the desulfur desilicon technology of sulfur-bearing bauxite, adopt one section fine grinding technology (mog is-0.074mm about 90%), under the situation of pH value 9-10, adopt the alkyl dithiocarbonate collecting agent reverse flotation desulfurizing of high consumption (3333 gram/ton raw ore), adopt lauryl sodium sulfate to carry out flotation desilication as the supplementary catching agent of soap then, the rate of recovery of aluminium oxide is greater than 80%.As can be seen, the floating agent large usage quantity of using in this technology, the alumina recovery rate is low.Therefore, development of new floating agent and novel process such bauxite is carried out floatation desulphurization and desiliconization significant.
Summary of the invention
The ore pulp dispersive property is poor after the fine grinding that the objective of the invention is to exist at above-mentioned technology, specific area big, consume that the floating agent consumption is big, the shortcoming a little less than the collecting agent performance, a kind of consumption that can effectively reduce floating agent is provided, guarantees flotation concentrate quality, the sulfur-bearing that improves the floatation process index, the method that low alumina-silicon ratio alumyte carries out efficient flotation desulfur desilicon.
A kind of method of flotation desulfur desilicon in bauxite is characterized in that it adopts reverse flotation desulfurizing technology and direct-flotation desiliconisation technology successively, carries out reverse flotation desulfurizing for the middle-low bauxite of sulfur-bearing behind primary grinding, and the stage is carried out direct-flotation desiliconisation after regrinding.
The method of a kind of ore concentration of bauxite desulfur desilicon of the present invention, it is characterized in that its reverse flotation desulfurizing process be the primary grinding fineness for-when 0.074mm accounts for 60%-85%, be collecting agent with ethyl xanthogenate or diethyldithiocarbamate, its consumption is that measure in 100-500 gram/ton ore deposit; Copper sulphate is for adjusting agent, and its consumption is a 50-500 gram/ton ore deposit amount; 2# oil is foaming agent, and consumption is a 20-150 gram/ton ore deposit amount, and reverse flotation desulfurizing is carried out in ore pulp and floating agent effect, obtains bauxite chats in sulfide ore tailings and the groove.
The method of a kind of ore concentration of bauxite desulfur desilicon of the present invention, it is characterized in that its direct-flotation desiliconisation process is that bauxite chats in the groove after the desulfurization is carried out second section ore grinding, when mog-0.074mm is 75%-92%, with the aphthenic acids of saponification and aliphatic acid according to 1: the composite back of the ratio of 5-200 is as collecting agent, and its consumption is that measure in 700-1600 gram/ton ore deposit; Adjust the pH value with sodium carbonate, consumption is a 2000-5000 gram/ton ore deposit amount; With the calgon is to adjust agent, and consumption is a 50-200 gram/ton ore deposit amount, and ore pulp is through carrying out direct-flotation desiliconisation with the effect of bauxite direct-flotation desiliconisation medicament, output foam bauxite concentrate.
The method of a kind of ore concentration of bauxite desulfur desilicon of the present invention is characterized in that its reverse flotation desulfurizing process is roughly selecting, scanning with selected once or twice.
The method of a kind of ore concentration of bauxite desulfur desilicon of the present invention is characterized in that its direct-flotation desiliconisation process is for once or the roughly selecting, scan with selected of secondary.
Method of the present invention comprises and adopts primary grinding technology to carry out carrying out behind reverse flotation desulfurizing, the stage grinding technology of flotation desilication, comprises the floating agent that uses in this technology simultaneously.
The floating agent that relates in the inventive method is to filter out suitable effective collecting agent ethyl xanthogenate that sulfur-bearing bauxite is carried out desulfurization, and cooperates adjustment agent copper sulphate; Exploitation with the aliphatic acid of saponification and the aphthenic acids highly efficiency compositional collecting agent that the bauxite direct-flotation desiliconisation after composite is used according to certain ratio.
The technology of the present invention design be to propose corase grind desulfurization and fine grinding desiliconization, distinguish the technological process of flotation according to the ore characteristics.At first, after one section corase grind, add the reverse flotation desulfurizing medicament bauxite is carried out the desulfurization flotation, after passing through the stage fine grinding then, adopt direct-flotation desiliconisation technology and medicament to carry out the stage desiliconization, improve the quality of bauxite, make its requirement of satisfying producing aluminium oxide by bayer technology, expansion can utilize bauxite resource; On the other hand,, further reduce the floating agent consumption, improve production technology and economic indicator by the exploitation high-efficient collecting agent.
Sulphide ore is because disseminated grain size is thick, and suitable the employing roughly ground floatation desulphurization technology.The present invention adopts the corase grind sulfur removal technology to reduce power consume, greatly reduces the consumption of sulfide mineral collector and reduces the interference effect of floating agent to next step flotation desilication, by filtering out high-efficient collecting agent, reaches the purpose of high-efficiency desulfurization.The silicate gangue mineral disseminated grain size is thin, thereby needs ore is carried out fine grinding, makes it that monomer cleavage take place, and adopts efficient floating agent to carry out flotation desilication then.After adopting the high-efficient collecting agent that the direct flotation of exploitation uses, strengthened the diaspore mineral collecting and with the FLOTATION SEPARATION of silicate gangue mineral.
The present invention adopts stage grinding technology, makes the sulphide ore diffeential floatation of coarse grain embedding cloth separate, and desiliconization is carried out in fine grinding then, and is advanced on the technology, stable; Under the effect of the bauxite desilication floating agent of efficient sulfide flotation medicament and advanced technology, reach good production technology and economic indicator, to containing S0.5-5%, Al 2O 355%～72%, SiO 2The diaspore type bauxite raw ore of 2～19% sulfur-bearing, low alumina silica ratio has the effect of stage desulfurization preferably and desiliconization.The bauxite concentrate of output alumina silica ratio 7～15, this concentrate can be directly used in alumina producing Bayer process, remarkable in economical benefits.
Be applicable to floatation desulphurization, the desiliconization of the low-grade bauxite of sulfur-bearing,, can only adopt a segment process of front to carry out desulfurization for the bauxitic ore of high aluminium silicon ratio; For low-grade sulfur-bearing bauxite, after one section sulfur removal technology finishes, carry out two-stage desilication technology, application prospect is extensive.
The specific embodiment
A kind of method of flotation desulfur desilicon in bauxite, it adopts reverse flotation desulfurizing technology and direct-flotation desiliconisation technology successively, carries out reverse flotation desulfurizing for the middle-low bauxite of sulfur-bearing behind primary grinding, and the stage is carried out direct-flotation desiliconisation after regrinding.Its reverse flotation desulfurizing process be the primary grinding fineness for-when 0.074mm accounts for 60%-85%, be collecting agent with ethyl xanthogenate or diethyldithiocarbamate, its consumption is that measure in 100-500 gram/ton ore deposit; Copper sulphate is for adjusting agent, and its consumption is a 50-500 gram/ton ore deposit amount; 2# oil is foaming agent, and consumption is a 20-150 gram/ton ore deposit amount, and reverse flotation desulfurizing is carried out in ore pulp and floating agent effect, obtains bauxite chats in sulfide ore tailings and the groove.Its direct-flotation desiliconisation process is that bauxite chats in the groove after the desulfurization is carried out second section ore grinding, when mog-0.074mm is 75%-92%, with the aphthenic acids of saponification and aliphatic acid according to 1: the composite back of the ratio of 5-200 is as collecting agent, and its consumption is that measure in 700-1600 gram/ton ore deposit; Adjust the pH value with sodium carbonate, consumption is a 2000-5000 gram/ton ore deposit amount; With the calgon is to adjust agent, and consumption is a 50-200 gram/ton ore deposit amount, and ore pulp is through carrying out direct-flotation desiliconisation with the effect of bauxite direct-flotation desiliconisation medicament, output foam bauxite concentrate.
Be further described below in conjunction with specific embodiment.
Embodiment 1
For Chuan Dong gulf, Nanchuan city-grey river one band bauxite, tcrude ore Al 2O 359.74%, SiO 211.39%, alumina silica ratio is 5.24, sulfur-bearing 1.73%, and the concrete technology of its floatation desulphurization and desiliconization is as follows:
A) one section sulfur removal technology: adopt ball mill that bauxite is carried out ore grinding, the sodium carbonate that in ball mill, adds 4200 gram/ton raw ores, the ore milling product fineness accounts for 75% for-0.074mm, overflow concentration in classifier 38%, ore pulp behind the ore grinding adds copper sulphate for activation agent 140 gram/tons in agitator, collecting agent 240 gram/tons, 2# oil gas infusion 80 gram/tons, fully behind the stirring action, feed flotation device and carry out reverse flotation desulfurizing, the pulp density of flotation operation is 14～37%, mash acid alkalinity keeps about pH8.1, adopt one roughing, the closed circuit flow process that primary cleaning, chats are returned in proper order, output flotation froth sulphur concentrate.
B) stage desilication process: the desulfurization concentrate is carried out secondary grinding, mog is 86%, adjust slurry pH to 9.5, add aphthenic acids and oleic acid in the composite collecting agent of 1: 15 ratio, consumption is 1160 gram/tons, and calgon is adjusted agent 60 gram/tons, roughly select with selected concentration be 18%-32%, scanning concentration is 7%-15%, through one thick two single-mindedly sweeping, after chats returns in proper order the closed circuit flotation flowsheet, obtaining qualified bauxite concentrate and a spot of bauxite gangue product.
The mineral processing index that they obtain when adopting ethyl xanthogenate and diethyldithiocarbamate respectively sees Table 1.
Mineral processing index when table 1 adopts ethyl xanthogenate and diethyldithiocarbamate to make collecting agent respectively
Collecting agent Name of product Al 2O 3％ SiO 2％ A/S S％ Productive rate % Rate of recovery %
Ethyl xanthogenate Raw ore 59.74 11.39 5.24 1.73 100.00 100.00
The sulphur concentrate 24.15 5.94 4.07 29.94 5.13 2.07
The aluminium concentrate 66.91 6.45 10.37 0.18 76.26 85.41
The aluminium mine tailing 40.16 33.13 1.21 0.31 18.61 12.51
Diethyldithiocarbamate Raw ore 59.74 11.39 5.24 1.73 100.00 100.00
The sulphur concentrate 25.36 5.94 4.27 28.16 5.13 2.18
The aluminium concentrate 66.86 6.74 9.92 0.29 74.58 83.47
The aluminium mine tailing 42.25 29.85 1.42 0.35 20.29 14.35
Embodiment 2
A kind of high-sulfur, high aluminium silicon ratio bauxite for the Nanchuan city only adopt one section sulfur removal technology, and sulfur removal technology is as follows:
Adopt ball mill that bauxite is carried out ore grinding, the sodium carbonate that in ball mill, adds 4200 gram/ton raw ores, the ore milling product fineness accounts for 72% for-0.074mm, overflow concentration in classifier 39.25%, ore pulp behind the ore grinding adds copper sulphate for activation agent 120 gram/tons in agitator, ethyl xanthogenate collecting agent 260 gram/tons, 2# oil gas infusion 80 gram/tons fully behind the stirring action, feed flotation device and carry out reverse flotation desulfurizing, the pulp density of flotation operation is 14～37%, mash acid alkalinity keeps adopting one roughing about pH8.1, recleaning, the closed circuit flow process that once purging selection, chats return in proper order, bauxite concentrate in output flotation froth sulphur concentrate and the groove, mineral processing index sees Table 2.
Mineral processing index when table 2 adopts ethyl xanthogenate to make collecting agent respectively
Name of product Productive rate % Al 2O 3％ SiO 2％ A/S S％ Al 2O 3Rate of recovery % S rate of recovery %
The aluminium concentrate 90.70 71.21 7.3 9.75 0.36 97.68 8.82
The sulphur concentrate 9.30 16.52 2.32 8.5 36.4 2.32 91.18
Raw ore 100.00 66.12 6.84 9.67 3.7 100.00 100.00

Claims (5)

1, a kind of method of flotation desulfur desilicon in bauxite, it is characterized in that it adopts reverse flotation desulfurizing technology and direct-flotation desiliconisation technology successively, middle-low bauxite for sulfur-bearing carries out reverse flotation desulfurizing behind primary grinding, the stage is carried out direct-flotation desiliconisation after regrinding.
2. the method for a kind of ore concentration of bauxite desulfur desilicon according to claim 1, it is characterized in that its reverse flotation desulfurizing process be the primary grinding fineness for-when 0.074mm accounts for 60%-85%, with ethyl xanthogenate or diethyldithiocarbamate is collecting agent, and its consumption is a 100-500 gram/ton ore deposit amount; Copper sulphate is for adjusting agent, and its consumption is a 50-500 gram/ton ore deposit amount; 2# oil is foaming agent, and consumption is a 20-150 gram/ton ore deposit amount, and reverse flotation desulfurizing is carried out in ore pulp and floating agent effect, obtains bauxite chats in sulfide ore tailings and the groove.
3. the method for a kind of ore concentration of bauxite desulfur desilicon according to claim 1, it is characterized in that its direct-flotation desiliconisation process is that bauxite chats in the groove after the desulfurization is carried out second section ore grinding, when mog-0.074mm is 75%-92%, with the aphthenic acids of saponification and aliphatic acid according to 1: the composite back of the ratio of 5-200 is as collecting agent, and its consumption is that measure in 700-1600 gram/ton ore deposit; Adjust the pH value with sodium carbonate, consumption is a 2000-5000 gram/ton ore deposit amount; With the calgon is to adjust agent, and consumption is a 50-200 gram/ton ore deposit amount, and ore pulp is through carrying out direct-flotation desiliconisation with the effect of bauxite direct-flotation desiliconisation medicament, output foam bauxite concentrate.
4. the method for a kind of ore concentration of bauxite desulfur desilicon according to claim 1 and 2 is characterized in that its reverse flotation desulfurizing process is roughly selecting, scanning with selected once or twice.
5. according to the method for claim 1 or 3 described a kind of ore concentration of bauxite desulfur desilicons, it is characterized in that its direct-flotation desiliconisation process is for once or the roughly selecting, scan with selected of secondary.
CNB2006100987108A 2006-07-06 2006-07-06 Method of flotation desulfur desilicon in bauxite Active CN100398216C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CNB2006100987108A CN100398216C (en) 2006-07-06 2006-07-06 Method of flotation desulfur desilicon in bauxite
AU2006346015A AU2006346015B2 (en) 2006-07-06 2006-12-06 A floatation process for desulfurization and desiliconization of bauxites
PCT/CN2006/003314 WO2008006264A1 (en) 2006-07-06 2006-12-06 Floatation method of desulphurisaiton and desiliconization for bauxite
RU2009100061/03A RU2422212C2 (en) 2006-07-06 2006-12-06 Method of flotation for bauxite desulphurisation and desiliconisation

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CN101844112A (en) * 2010-06-30 2010-09-29 中南大学 Application of collecting agent in reverse floatation of bauxite
CN102151614A (en) * 2010-12-15 2011-08-17 中国铝业股份有限公司 Method for dressing, desilicication and desulfuration of sulfur-containing bauxite
CN102228869A (en) * 2011-04-14 2011-11-02 昆明理工大学 Flotation method for desulfurization and desilication of high-silicon bauxite
CN102489411A (en) * 2011-12-26 2012-06-13 昆明理工大学 Flotation two-stage desiliconization method for high-silicon bauxite
CN102806145A (en) * 2012-07-27 2012-12-05 中国铝业股份有限公司 Method for performing beneficiation and desulfurization on bauxite
CN103272701A (en) * 2013-06-08 2013-09-04 中国铝业股份有限公司 High-sulfur bauxite flotation and desulphurization method
CN103506224A (en) * 2012-06-27 2014-01-15 沈阳铝镁设计研究院有限公司 High-efficiency desulfurization method for reverse flotation of high sulfur bauxite
CN105234006A (en) * 2015-09-17 2016-01-13 中国铝业股份有限公司 Method for synchronous floatation, desulfuration and desilicication of high-sulfur bauxite
CN105562212A (en) * 2015-03-18 2016-05-11 遵义能矿投资股份有限公司 Method for desilication and desulfuration of sulfur-containing bauxite by floating
CN109909056A (en) * 2019-02-21 2019-06-21 中国地质科学院矿产综合利用研究所 Flotation process for complex refractory sulphide ore associated with silicon/aluminum
CN110586316A (en) * 2019-09-11 2019-12-20 兰州高斯年代岩石矿物分选技术服务有限公司 Purification process of Lu bauxite ore
CN114247566A (en) * 2021-12-21 2022-03-29 中南大学 High-sulfur bauxite desulfurization and desilication flotation collecting agent and integrated flotation method

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CN104624382A (en) * 2015-02-06 2015-05-20 河南东大矿业股份有限公司 Multi-point adding method of monohydrallite direct flotation collecting agent
CN106076655B (en) * 2016-06-30 2018-06-15 福州大学 A kind of trapping agent for bauxite flotation and preparation method thereof
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