CN109290050A - A kind of low Fe-spodumene preparation method - Google Patents

A kind of low Fe-spodumene preparation method Download PDF

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Publication number
CN109290050A
CN109290050A CN201811131821.3A CN201811131821A CN109290050A CN 109290050 A CN109290050 A CN 109290050A CN 201811131821 A CN201811131821 A CN 201811131821A CN 109290050 A CN109290050 A CN 109290050A
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China
Prior art keywords
spodumene
concentrate
flotation
low
iron
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CN201811131821.3A
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Chinese (zh)
Inventor
于福顺
陆帅帅
张彩娥
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Shandong University of Technology
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Shandong University of Technology
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Priority to CN201811131821.3A priority Critical patent/CN109290050A/en
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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
    • B03B9/00General arrangement of separating plant, e.g. flow sheets
    • 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
    • B03D1/02Froth-flotation processes
    • B03D1/025Froth-flotation processes adapted for the flotation of fines
    • 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
    • B03D2203/00Specified materials treated by the flotation agents; Specified applications
    • B03D2203/02Ores
    • B03D2203/04Non-sulfide ores

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  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention discloses a kind of low Fe-spodumene preparation methods, this method be will be levigate after spodumene ore pulp in be added neopelex carry out reverse flotation, by the sludge and the impure minerals emersion such as iron, calcium in ore, sodium hydroxide, oleic acid are separately added into ore pulp again and carries out spodumene direct flotation with the collecting agent that compounds that hexadecyltrimethylammonium chloride forms, it is stirred and sizes mixing after addition polyoxyethyl propyl polyoxyethanyl glycerin ether in the spodumene rough concentrate of emersion, then carry out wet type low intensity magnetic separation and High gradient high intensity magnetic separation Iron removal by two steps.The final spodumene concentrate product F e handled by this method2O3The advantages of grade can be down to 0.15~0.25%, reach low iron lithium concentrate to the quality requirement of iron content, while this method also has the lithium concentrate rate of recovery high, and process is simple, be convenient for industrial realization.

Description

A kind of low Fe-spodumene preparation method
Technical field
The present invention relates to a kind of low Fe-spodumene preparation methods, belong to Mineral Processing Engineering technical field.
Background technique
Lithium is known as " the new energy metal in century ", " push the world advance important element ", is a kind of important rare Metal, lithium and its compound can be used as the molten of the heat carrier of nuclear reactor, the protective materials of thermal neutron, moderator and nuclear fuel Agent, high-energy fuel can also be used to produce high performance lubricant, high-power battery material etc..There are two main classes in the source of lithium: a kind of For salt lake bittern lithium;Another kind of is ore lithium, and spodumene mine is the Typical Representative of ore lithium.Spodumene mine obtains after ore dressing is handled The low Fe-spodumene arrived can replace lithium carbonate, and novel cooperation is widely used as in the industries such as electronics, vessel, glass, micro-crystalline ceramic Material has powerful fluxing capabilities, can reduce production energy consumption, and the product generated is made to have the lower coefficient of expansion.
Spodumene deposit is generally granitic pegmatite-type, often with feldspar, quartz, mica, apatite, garnet, hornblend, The mineral association such as tourmaline, iron and manganese oxides.In addition to containing useful composition Li in spodumene mine2Outside O, also contain a large amount of SiO2、 Al2O3、Fe2O3Equal components.Since iron-bearing mineral and spodumene mineral have similar floatability, the lithium obtained after flotation is smart Iron-bearing mineral is also enriched in mine, Fe in spodumene concentrate2O3Grade is usually above head grade, some regional spodumene mines Fe in flotation concentrate2O3Grade is up to 5% or more.The low iron lithium concentrate Fe of lithium concentrate quality requirements of the national standard level-one2O3Grade is not Greater than 0.15%, the low iron lithium concentrate Fe of second level2O3Grade is not more than 0.20%, the low iron lithium concentrate Fe of three-level2O3Grade is not more than 0.25%.Iron in spodumene ore is often present in spodumene mineral or arteries and veins in the form of isomorph, micro- or submicroscopic inclusion enclave Among stone ore object, the iron in lithium concentrate can not be effectively removed using simple magnetic concentration working, it is often necessary to chloridising roasting, pickling Etc. chemical methodes iron could be down under qualified level, these method high production cost, and have very big pollution to environment, Production application has significant limitation.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of preparation methods of low Fe-spodumene, this preparation method is not It is related to complicated chemical reaction, can be only realized by way of physical upgrading.
In order to solve the above technical problems, the present invention provides a kind of novel preparation method of low Fe-spodumene, this method includes Following steps:
(1) the levigate extremely -0.074mm grade of spodumene raw ore is accounted for 60~80%;
(2) neopelex is added, dosage is 50~200g/t, and stirring is sized mixing 5 minutes;
(3) reverse flotation is carried out, by the particulate sludge and the impure minerals emersion such as iron, manganese, calcium in ore pulp;
(4) sodium hydroxide is added in ore pulp, dosage is 600~1500g/t, and stirring is added after twenty minutes by oleic acid and hexadecane The compounding collecting agent of base trimethyl ammonium chloride composition, compounding mass ratio are 16:1, and dosage is 100~400g/t, stir and size mixing 5 Minute;
(5) one thick, two essences are carried out, two sweep direct flotation, obtain spodumene flotation concentrate;
(6) dosage is added in flotation concentrate to size mixing 5 points to be stirred after the polyoxyethyl propyl polyoxyethanyl glycerin ether of 3~5g/t Clock;
(7) the spodumene flotation concentrate after sizing mixing carries out wet type low intensity magnetic separation and High gradient high intensity magnetic separation Iron removal by two steps, obtains final Low Fe-spodumene concentrate product.
The neopelex being related in step (2) is anion collecting agent, is had to iron, calcium mineral stronger Collecting performance, while there is very strong frothing capacity.Micro-size fraction sludge is easy to be attached on bubble, and on a large amount of bubbles It is floating.Therefore reverse flotation is carried out after neopelex being added, a large amount of sludges can be not only removed, play desliming;And And also do not enter these mineral in spodumene flotation concentrate most of iron, manganese, calcium mineral emersion, it is low Fe-spodumene system Standby important step.
The polyoxyethyl propyl polyoxyethanyl glycerin ether being related in step (6) plays defoaming to spodumene flotation concentrate and dispersion is made With the generation of reduction hydrophobicity floc sedimentation can greatly improve the effect of magnetic separation separation.
The spodumene concentrate Fe handled using the method for the present invention2O3Grade can be down to 0.15~0.25%, reach low iron Lithium concentrate is to the quality requirement of iron content, while this method also has the lithium concentrate rate of recovery high, and process is simple, is convenient for industrial realization The advantages of.
Detailed description of the invention
Attached drawing 1 is low Fe-spodumene preparation technology flow chart.
Specific embodiment
Below according to embodiment, the present invention will be further described.
Embodiment 1:
Contain Li in the spodumene mine of Sichuan2O grade is 1.38%, and -0.074mm grain size content accounts for 70% after ore grinding, and 100 g/t are added The neopelex of dosage, stirring are sized mixing 5 minutes, and reverse flotation is carried out.The hydroxide of 800 g/t dosages is added in ore pulp The compounding collecting agents of 200 g/t dosages is added in sodium, stirring after twenty minutes, and stirring is sized mixing 5 minutes, carries out one thick, two essences, two sweeps just Flotation obtains spodumene flotation concentrate.It is laggard that the polyoxyethyl propyl polyoxyethanyl glycerin ether that dosage is 3g/t is added in flotation concentrate Row stirring is sized mixing 5 minutes, and the spodumene flotation concentrate after sizing mixing carries out wet type low intensity magnetic separation and High gradient high intensity magnetic separation Iron removal by two steps, The magnetic field strength of two stages of magnetic separation is respectively 0.6T and 1.2T, obtains final low Fe-spodumene concentrate product.Reverse flotation is obtained respectively To impurity mine, the tailing of direct flotation, low intensity magnetic separation be filtered containing iron ore, high intensity magnetic separation containing iron ore and low Fe-spodumene concentrate, dry Dry, weighing, chemical examination, obtain the production target that low Fe-spodumene is prepared using the method for the present invention, and data are as shown in the table.
Embodiment 2:
Contain Li in certain Australian spodumene mine2O grade is 1.62%, and -0.074mm grain size content accounts for 80% after ore grinding, is added 200 The neopelex of g/t dosage, stirring are sized mixing 5 minutes, and reverse flotation is carried out.The hydrogen of 1500 g/t dosages is added in ore pulp The compounding collecting agent of 400 g/t dosages is added in sodium oxide molybdena, stirring after twenty minutes, and stirring is sized mixing 5 minutes, carries out thick, two essences, two Direct flotation is swept, spodumene flotation concentrate is obtained.The polyoxyethyl propyl polyoxyethanyl glycerin ether that dosage is 5g/t is added in flotation concentrate After be stirred and size mixing 5 minutes, the spodumene flotation concentrate after sizing mixing carries out wet type low intensity magnetic separation and two sections of High gradient high intensity magnetic separation Except iron, the magnetic field strength of two stages of magnetic separation is respectively 0.6T and 1.2T, obtains final low Fe-spodumene concentrate product.It counter will float respectively Obtained impurity mine, the tailing of direct flotation, low intensity magnetic separation is selected to carry out containing iron ore, high intensity magnetic separation containing iron ore and low Fe-spodumene concentrate Filter, drying, weighing, chemical examination, obtain the production target that low Fe-spodumene is prepared using the method for the present invention, and data such as following table is such as shown.
Embodiment 3:
Contain Li in the spodumene mine of Xinjiang2O grade is 1.45%, and -0.074mm grain size content accounts for 60% after ore grinding, and 50 g/t are added The neopelex of dosage, stirring are sized mixing 5 minutes, and reverse flotation is carried out.The hydroxide of 600 g/t dosages is added in ore pulp The compounding collecting agents of 100 g/t dosages is added in sodium, stirring after twenty minutes, and stirring is sized mixing 5 minutes, carries out one thick, two essences, two sweeps just Flotation obtains spodumene flotation concentrate.It is laggard that the polyoxyethyl propyl polyoxyethanyl glycerin ether that dosage is 3g/t is added in flotation concentrate Row stirring is sized mixing 5 minutes, and the spodumene flotation concentrate after sizing mixing carries out wet type low intensity magnetic separation and High gradient high intensity magnetic separation Iron removal by two steps, The magnetic field strength of two stages of magnetic separation is respectively 0.6T and 1.2T, obtains final low Fe-spodumene concentrate product.Reverse flotation is obtained respectively To impurity mine, the tailing of direct flotation, low intensity magnetic separation be filtered containing iron ore, high intensity magnetic separation containing iron ore and low Fe-spodumene concentrate, dry Dry, weighing, chemical examination, obtain the production target that low Fe-spodumene is prepared using the method for the present invention, and data are as shown in the table.

Claims (1)

1. a kind of low Fe-spodumene preparation method, which is characterized in that described method includes following steps:
(1) the levigate extremely -0.074mm grade of spodumene raw ore is accounted for 60~80%;
(2) neopelex is added, dosage is 50~200g/t, and stirring is sized mixing 5 minutes;
(3) reverse flotation is carried out, by the particulate sludge and the impure minerals emersion such as iron, manganese, calcium in ore pulp;
(4) sodium hydroxide is added in ore pulp, dosage is 600~1500g/t, and stirring is added after twenty minutes by oleic acid and hexadecane The compounding collecting agent of base trimethyl ammonium chloride composition, compounding mass ratio are 16:1, and dosage is 100~400g/t, stir and size mixing 5 Minute;
(5) one thick, two essences are carried out, two sweep direct flotation, obtain spodumene flotation concentrate;
(6) dosage is added in flotation concentrate to size mixing 5 points to be stirred after the polyoxyethyl propyl polyoxyethanyl glycerin ether of 3~5g/t Clock;
(7) the spodumene flotation concentrate after sizing mixing carries out wet type low intensity magnetic separation and High gradient high intensity magnetic separation Iron removal by two steps, obtains final Low Fe-spodumene concentrate product.
CN201811131821.3A 2018-09-27 2018-09-27 A kind of low Fe-spodumene preparation method Pending CN109290050A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109939813A (en) * 2019-04-24 2019-06-28 葫芦岛八家矿业股份有限公司 The secondary enrichment comprehensive recovering process of sulphur silver ferrimanganic valuable element in a kind of tailing
CN113245065A (en) * 2021-06-09 2021-08-13 东北大学 Micro-fine particle quartz reverse flotation combined collecting agent and reverse flotation method

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Publication number Priority date Publication date Assignee Title
US2748938A (en) * 1952-06-23 1956-06-05 Armour & Co Flotation of spodumene
US6422393B1 (en) * 2000-04-14 2002-07-23 Jeffrey Van Jahnke Recovery from fine froth flotation feed (slimes)
CN102909136A (en) * 2012-10-29 2013-02-06 江西理工大学 Ore dressing method of spodumene quarry
CN103418488A (en) * 2013-08-23 2013-12-04 中国地质科学院矿产综合利用研究所 Comprehensive recovery process of lithium polymetallic ore associated with fine niobium and tantalum
CN103977905A (en) * 2014-05-27 2014-08-13 四川天齐盛合锂业有限公司 Spodumene ore processing method
CN107159446A (en) * 2017-06-19 2017-09-15 西南科技大学 A kind of method of pegmatite type spodumene efficient flotation separation
CN108525858A (en) * 2018-04-19 2018-09-14 江西金辉再生资源股份有限公司 The method of tantalum niobium ore dressing plant tailings recycling lepidolite concentrate

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748938A (en) * 1952-06-23 1956-06-05 Armour & Co Flotation of spodumene
US6422393B1 (en) * 2000-04-14 2002-07-23 Jeffrey Van Jahnke Recovery from fine froth flotation feed (slimes)
CN102909136A (en) * 2012-10-29 2013-02-06 江西理工大学 Ore dressing method of spodumene quarry
CN103418488A (en) * 2013-08-23 2013-12-04 中国地质科学院矿产综合利用研究所 Comprehensive recovery process of lithium polymetallic ore associated with fine niobium and tantalum
CN103977905A (en) * 2014-05-27 2014-08-13 四川天齐盛合锂业有限公司 Spodumene ore processing method
CN107159446A (en) * 2017-06-19 2017-09-15 西南科技大学 A kind of method of pegmatite type spodumene efficient flotation separation
CN108525858A (en) * 2018-04-19 2018-09-14 江西金辉再生资源股份有限公司 The method of tantalum niobium ore dressing plant tailings recycling lepidolite concentrate

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庄杜娟: ""某锂辉石矿选矿工艺试验研究"", 《新疆有色金属》 *
赖复兴: ""不加温浮选锂辉石矿和低铁锂辉石选矿扩大试验"", 《新疆有色金属》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109939813A (en) * 2019-04-24 2019-06-28 葫芦岛八家矿业股份有限公司 The secondary enrichment comprehensive recovering process of sulphur silver ferrimanganic valuable element in a kind of tailing
CN113245065A (en) * 2021-06-09 2021-08-13 东北大学 Micro-fine particle quartz reverse flotation combined collecting agent and reverse flotation method

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