CN108144744A - The method for floating of sulphur in a kind of association troilite - Google Patents

The method for floating of sulphur in a kind of association troilite Download PDF

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Publication number
CN108144744A
CN108144744A CN201611109056.6A CN201611109056A CN108144744A CN 108144744 A CN108144744 A CN 108144744A CN 201611109056 A CN201611109056 A CN 201611109056A CN 108144744 A CN108144744 A CN 108144744A
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CN
China
Prior art keywords
roughing
sulphur
concentration
iron
floating
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Pending
Application number
CN201611109056.6A
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Chinese (zh)
Inventor
刘永召
张祖刚
杨龙
衣德强
刘安平
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Shanghai Meishan Iron and Steel Co Ltd
Nanjing Meishan Metallurgy Development Co Ltd
Original Assignee
Shanghai Meishan Iron and Steel Co Ltd
Nanjing Meishan Metallurgy Development Co Ltd
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Application filed by Shanghai Meishan Iron and Steel Co Ltd, Nanjing Meishan Metallurgy Development Co Ltd filed Critical Shanghai Meishan Iron and Steel Co Ltd
Priority to CN201611109056.6A priority Critical patent/CN108144744A/en
Publication of CN108144744A publication Critical patent/CN108144744A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03BSEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B7/00Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation

Abstract

The present invention provides a kind of method for floating of sulphur in association troilite.The present invention includes(1)Roughing is carried out to entering floating raw ore;(2)Roughing underflow is scanned;(3)Rougher concentration is regrinded;(4)Rougher concentration after regrinding is carried out four times it is selected, selected underflow each time returns in proper order, wherein the 4th refining process adds in a certain amount of foaming agent, finally obtains iron concentrate and iron tailings.The present invention obtains the iron concentrate product of better quality, and improve the Sulphur ressource rate of recovery while reducing sulfur content in iron ore concentrate, this has important practice and theory significance to High sulfur iron ore desulfurization, efficiently using Sulphur ressource.

Description

The method for floating of sulphur in a kind of association troilite
Technical field:
The present invention relates to a kind of method for floating of sulphur in association troilite, belong to ore-dressing technique, technical field of resource comprehensive utilization.
Background technology:
When it is high sulfide pyrite to contain association pyrite in iron mineral, need to carry out desulfurization process.Sulfur content is to weigh iron ore concentrate One of leading indicator of quality height, according to the requirement of smelting iron and steel it is found that sulfur content raising 0.1% in iron ore concentrate, coke ratio will rise It is high by 5%, and the raising of coke ratio is unfavorable to blast furnace ironmaking, therefore the lower the sulfur content of iron ore concentrate the better.Meanwhile in iron ore concentrate Sulphur in smelting process, can partly be discharged in the form of gaseous sulphide such as sulfur dioxide with furnace gas, and in regional area Aggregation can be dissolved in water when encountering water and form sulfurous acid, then under the catalysis of other chemical substances and oxidizing effect Sulfuric acid is generated, sedimentation forms acid rain, causes serious environmental pollution and harm.Therefore, iron ore concentrate sulfur-bearing is controlled relatively low It is horizontal extremely important.If can be recycled while high sulfide pyrite effective desulfurization to Sulphur ressource, there will be significant warp Ji and social benefit.
Ferro-sulphur ore comprehensively utilizes, and is exactly except using in addition to sulphur therein, while recycles iron and associated metal.Including Huang A kind of essential mineral in iron ore troilite, the mostly association in coloured, polymetallic deposit, single pyrite deposit take second place.At present The existing effective recovery process of pyrite in single pyrite deposit, such as Yunfu Sulfur-Iron Ore Enterprise Group Corp..However, While high sulfide pyrite effective desulfurization, the Comprehensive Recovery Technology shortcoming of the association troilite in iron ore is recycled, companion in iron ore The synthetical recovery of raw troilite requires that the recycling of pivot plain sheet cannot be influenced, and simultaneously to obtain technical indicator high as possible, With maximum economic benefit.
The desulfurization of association troilite at present mostly using floatation process, after raw ore ore grinding to qualified fineness, adds in flotation medicine Agent by roughing and several sections of selected operations, finally obtains iron concentrate and flotation iron ore concentrate, iron concentrate sulfur grade 30% or so, For sulfur recovery rate between 60%-70%, iron concentrate sulfur grade and the rate of recovery are relatively low, influence the recycling of Sulphur ressource.Flotation iron Concentrate sulfur-bearing fluctuates between 0.35%-0.55%, and it is exceeded to easily lead to final iron ore concentrate sulfur-bearing, influences concentrate sale.
Invention content
The purpose of the present invention is providing a kind of method for floating of sulphur in association troilite in view of the above problems, reduce The iron concentrate product of better quality is obtained in iron ore concentrate while sulfur content, and improves the Sulphur ressource rate of recovery, this is to high sulfide pyrite Stone desulfurization efficiently has important practice and theory significance using Sulphur ressource.
Above-mentioned purpose is achieved through the following technical solutions:
The method for floating of sulphur in a kind of association troilite, this method comprises the following steps:
(1)Roughing is carried out to entering floating raw ore:Roughing is carried out in rougher cell to entering floating raw ore, water is added to adjust floatation concentration, Medicament is added in tank diameter by the order of addition of ingredients according to collecting agent, foaming agent successively, regular time is stirred respectively, using machine Tool scrapes bubble, obtains roughing iron concentrate and roughing underflow;
(2)Roughing underflow is scanned:After roughing, roughing underflow, which enters, scans in flotation cell and is scanned, according to catching Receive agent, medicament is added to scans in flotation cell successively by the order of addition of ingredients of foaming agent, regular time is stirred respectively, using machinery Bubble is scraped, and froth pulp will be scanned in proper order back to roughing process, wherein, roughing pulp quality a concentration of 20 ~ 33%.
(3)Rougher concentration is regrinded:Ore milling concentration is 60 ~ 66%, using grinding machine to step(1)Described in roughing essence Ore deposit is regrinded, and control grinding fineness is:- 0.043mm contents>It is 88%;
(4)Rougher concentration after regrinding is carried out selected:To after regrinding rougher concentration carry out four times it is selected, it is selected each time Underflow returns in proper order, wherein the 4th refining process adds in a certain amount of foaming agent, finally obtains iron concentrate and iron tailings.
The method for floating of sulphur in the association troilite, the collecting agent use isoamyl xanthate, roughing collecting agent Dosage is 200 ~ 300g/t, scans collector dosage as 50 ~ 80g/t;The foaming agent uses MIBC, roughing frother dosages For 90 ~ 120g/t, frother dosages are scanned as 20 ~ 30g/t, and the 4th selected frother dosages are 10 ~ 20g/t;It adds in every time Mixing time after collecting agent and foaming agent is 5min respectively.
Advantageous effect:
The present invention, which is realized, recycles the Sulphur ressource of removing while sulfur content in reducing iron ore, has flow solution Structure is simple, is easy to the characteristics of commercial Application, and to high sulfide pyrite, effective desulfurization, the recycling of association Sulphur ressource have important meaning Justice has significant economic and social benefit.
Description of the drawings
Fig. 1 is the flow chart of the present invention.
Specific embodiment
With reference to embodiment, the present invention is furture elucidated, it should be understood that following specific embodiments are only used for It is bright the present invention rather than limit the scope of the invention.
The method for floating of sulphur in a kind of association troilite, this method comprises the following steps:
(1)Roughing is carried out to entering floating raw ore:Roughing is carried out in rougher cell to entering floating raw ore, water is added to adjust floatation concentration, Medicament is added in tank diameter by the order of addition of ingredients according to collecting agent, foaming agent successively, regular time is stirred respectively, using machine Tool scrapes bubble, obtains roughing iron concentrate and roughing underflow;
(2)Roughing underflow is scanned:After roughing, roughing underflow, which enters, scans in flotation cell and is scanned, according to catching Receive agent, medicament is added to scans in flotation cell successively by the order of addition of ingredients of foaming agent, regular time is stirred respectively, using machinery Bubble is scraped, and froth pulp will be scanned in proper order back to roughing process, wherein, roughing pulp quality a concentration of 20 ~ 33%.
(3)Rougher concentration is regrinded:Ore milling concentration is 60 ~ 66%, using grinding machine to step(1)Described in roughing essence Ore deposit is regrinded, and control grinding fineness is:- 0.043mm contents>It is 88%;
(4)Rougher concentration after regrinding is carried out selected:To after regrinding rougher concentration carry out four times it is selected, it is selected each time Underflow returns in proper order, wherein the 4th refining process adds in a certain amount of foaming agent, finally obtains iron concentrate and iron tailings.
The method for floating of sulphur in the association troilite, the collecting agent use isoamyl xanthate, roughing collecting agent Dosage is 200 ~ 300g/t, scans collector dosage as 50 ~ 80g/t;The foaming agent uses MIBC(That is methyl-isobutyl first Alcohol), roughing frother dosages are 90 ~ 120g/t, scan frother dosages as 20 ~ 30g/t, the 4th time selected frother dosages are 10~20g/t;The mixing time added in every time after collecting agent and foaming agent is 5min respectively.
Enter floating raw ore to regrind, selected sort by one roughing as shown in Figure 1, once purging selection, rougher concentration for four times Flow, the iron concentrate grade finally obtained>40%, effective sulfur grade>38%, sulfur recovery rate>70%, while sulphur in gained iron tailings Content<0.38%.
Embodiment 1
Technological process as shown in Figure 1 will be imported in tank diameter by the overflow of secondary grinding-secondary grading by pipeline, add water It is 33% to adjust pulp density, isopentyl sodium xanthate is added in tank diameter, dosage 250g/t, stirs 5min, then by MIBC It is added in tank diameter, dosage 90g/t, stirs 5min, imported the ore pulp in tank diameter in rougher cell by pipeline, Carry out roughing;Isopentyl sodium xanthate dosage is scanned as 60g/t, MIBC dosages are 25g/t, and the 4th time selected MIBC additional amounts are 13g/t, under conditions of regulator is not added, using it is one thick, sweep, coarse concentrate regrinding, four selected flows, rough concentrate is again It is 60% to grind ore milling concentration, and grinding fineness is that -0.043mm contents are 88%, and it is 42.76% that can obtain full sulfur grade, effective sulfur grade It is 41.68%, the rate of recovery of sulphur is 75.51% iron concentrate, and the sulfur content of flotation tailing is 0.35% at this time.
Embodiment 2
Technological process as shown in Figure 1 will be imported in tank diameter by the overflow of secondary grinding-secondary grading by pipeline, add water It is 20% to adjust pulp density, isopentyl sodium xanthate is added in tank diameter, dosage 250g/t, stirs 5min, then by MIBC It is added in tank diameter, dosage 90g/t, stirs 5min, imported the ore pulp in tank diameter in rougher cell by pipeline, Carry out roughing;Isopentyl sodium xanthate dosage is scanned as 60g/t, MIBC dosages are 25g/t, and the 4th time selected MIBC additional amounts are 13g/t, under conditions of regulator is not added, using it is one thick, sweep, coarse concentrate regrinding, four selected flows, rough concentrate is again It is 60% to grind ore milling concentration, and grinding fineness is that -0.043mm contents are 88.16%, and it is 42.68% that can obtain full sulfur grade, effective sulphur Grade is 41.26%, and the rate of recovery of sulphur is 74.51% iron concentrate, and the sulfur content of flotation tailing is 0.36% at this time.
Embodiment 3
Technological process as shown in Figure 1 will be imported in tank diameter by the overflow of secondary grinding-secondary grading by pipeline, add water It is 33% to adjust pulp density, isopentyl sodium xanthate is added in tank diameter, dosage 200g/t, stirs 5min, then by MIBC It is added in tank diameter, dosage 120g/t, stirs 5min, the ore pulp in tank diameter is imported by rougher cell by pipeline In, carry out roughing;Isopentyl sodium xanthate dosage is scanned as 50g/t, MIBC dosages are 30g/t, the 4th selected MIBC additional amount For 13g/t, under conditions of regulator is not added, using it is one thick, sweep, coarse concentrate regrinding, four selected flows, rough concentrate It is 66% to regrind ore milling concentration, and grinding fineness is that -0.043mm contents are 88%, and it is 42.34% that can obtain full sulfur grade, effective sulphur product Position is 41.02%, and the rate of recovery of sulphur is 73.51% iron concentrate, and the sulfur content of flotation tailing is 0.37% at this time.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention's Technical solution, and be not used as limitation of the invention, any connotation based on the present invention is to embodiment described above Variation, the modification made will be all fallen in the scope of the claims of the present invention.

Claims (2)

1. the method for floating of sulphur in a kind of association troilite, it is characterized in that:This method comprises the following steps:
(1)Roughing is carried out to entering floating raw ore:Roughing is carried out in rougher cell to entering floating raw ore, water is added to adjust floatation concentration, Medicament is added in tank diameter by the order of addition of ingredients according to collecting agent, foaming agent successively, regular time is stirred respectively, using machine Tool scrapes bubble, obtains roughing iron concentrate and roughing underflow;
(2)Roughing underflow is scanned:After roughing, roughing underflow, which enters, scans in flotation cell and is scanned, according to catching Receive agent, medicament is added to scans in flotation cell successively by the order of addition of ingredients of foaming agent, regular time is stirred respectively, using machinery Bubble is scraped, and froth pulp will be scanned in proper order back to roughing process, wherein, roughing pulp quality a concentration of 20 ~ 33%;
(3)Rougher concentration is regrinded:Ore milling concentration is 60 ~ 66%, using grinding machine to step(1)Described in rougher concentration into Row is regrinded, and control grinding fineness is:- 0.043mm contents>It is 88%;
(4)Rougher concentration after regrinding is carried out selected:To after regrinding rougher concentration carry out four times it is selected, it is selected each time Underflow returns in proper order, wherein the 4th refining process adds in a certain amount of foaming agent, finally obtains iron concentrate and iron tailings.
2. the method for floating of sulphur in association troilite according to claim 1, it is characterized in that:The collecting agent is using different Amyl group xanthate, roughing collector dosage are 200 ~ 300g/t, scan collector dosage as 50 ~ 80g/t;The foaming agent uses MIBC, roughing frother dosages are 90 ~ 120g/t, scan frother dosages as 20 ~ 30g/t, the 4th selected frother dosages For 10 ~ 20g/t;The mixing time added in every time after collecting agent and foaming agent is 5min respectively.
CN201611109056.6A 2016-12-06 2016-12-06 The method for floating of sulphur in a kind of association troilite Pending CN108144744A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109092551A (en) * 2018-07-27 2018-12-28 郑州中科新兴产业技术研究院 A kind of process preparing Super Pure Pyrite Wang Concentrate
CN109985732A (en) * 2019-04-07 2019-07-09 马学文 A kind of beneficiation method of troilite
CN115155794A (en) * 2022-06-17 2022-10-11 白银有色集团股份有限公司 Flotation process for recovering and producing sulfur concentrate from flotation tailings

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101254484A (en) * 2007-07-31 2008-09-03 中南大学 High-efficiency cleaning mineral separation process of complicated sulfuration mine
CN102357427A (en) * 2011-07-10 2012-02-22 重庆大学 Combined agent for pyrite flotation
CN104069937A (en) * 2014-05-16 2014-10-01 马钢集团设计研究院有限责任公司 Ore dressing method for removing pyrrhotite from iron ore
CN104475237A (en) * 2014-12-30 2015-04-01 阿鲁科尔沁旗厚德矿业开发有限责任公司 Mineral processing technology of refractory molybdenum ores with molybdenite and pyrite in close symbiotic relationship
CN104673995A (en) * 2015-02-14 2015-06-03 昆明理工大学 Method for combined recovery and sulfur removal of pyrite and magnetite
CN106000620A (en) * 2016-05-10 2016-10-12 中钢集团马鞍山矿山研究院有限公司 Beneficiation method for recovering high iron and high sulfur concentrate from copper tailings containing sulfur and iron

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101254484A (en) * 2007-07-31 2008-09-03 中南大学 High-efficiency cleaning mineral separation process of complicated sulfuration mine
CN102357427A (en) * 2011-07-10 2012-02-22 重庆大学 Combined agent for pyrite flotation
CN104069937A (en) * 2014-05-16 2014-10-01 马钢集团设计研究院有限责任公司 Ore dressing method for removing pyrrhotite from iron ore
CN104475237A (en) * 2014-12-30 2015-04-01 阿鲁科尔沁旗厚德矿业开发有限责任公司 Mineral processing technology of refractory molybdenum ores with molybdenite and pyrite in close symbiotic relationship
CN104673995A (en) * 2015-02-14 2015-06-03 昆明理工大学 Method for combined recovery and sulfur removal of pyrite and magnetite
CN106000620A (en) * 2016-05-10 2016-10-12 中钢集团马鞍山矿山研究院有限公司 Beneficiation method for recovering high iron and high sulfur concentrate from copper tailings containing sulfur and iron

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109092551A (en) * 2018-07-27 2018-12-28 郑州中科新兴产业技术研究院 A kind of process preparing Super Pure Pyrite Wang Concentrate
CN109985732A (en) * 2019-04-07 2019-07-09 马学文 A kind of beneficiation method of troilite
CN115155794A (en) * 2022-06-17 2022-10-11 白银有色集团股份有限公司 Flotation process for recovering and producing sulfur concentrate from flotation tailings
CN115155794B (en) * 2022-06-17 2024-01-12 白银有色集团股份有限公司 Flotation process for recycling and producing sulfur concentrate from flotation tailings

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