CN105803185B - A kind of beneficiation method of aufe oxide ore packet classification synthetical recovery - Google Patents
A kind of beneficiation method of aufe oxide ore packet classification synthetical recovery Download PDFInfo
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- CN105803185B CN105803185B CN201610156352.5A CN201610156352A CN105803185B CN 105803185 B CN105803185 B CN 105803185B CN 201610156352 A CN201610156352 A CN 201610156352A CN 105803185 B CN105803185 B CN 105803185B
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- magnetic separation
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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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
- B03D1/01—Organic compounds containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/08—Obtaining noble metals by cyaniding
-
- 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
- B03D2203/025—Precious metal ores
Abstract
The invention discloses the beneficiation method of a kind of aufe oxide ore packet classification synthetical recovery.Size mixing adding water after raw ore ore grinding, carry out low intensity magnetic separation, obtain low intensity magnetic separation concentrate and low intensity magnetic separation mine tailing, low intensity magnetic separation mine tailing carries out high intensity magnetic separation, obtain high intensity magnetic separation concentrate and non-magnetic product, again low intensity magnetic separation concentrate, high intensity magnetic separation concentrate and non-magnetic product are separately added into and carry out Cyanide Leaching, after leaching, finally obtain magnetite concentrate, brown iron ore concentrate and golden liquid.The inventive method response rate is high, low cost, the Iron grade of the magnetite concentrate obtained is 60～63.21%, iron recovery is 30～33%, the Iron grade of brown iron ore concentrate is 50～52%, and iron recovery is 55～58%, and the gold recovery of golden liquid is 90～92%, the synthetical recovery of valuable element be applicable to aufe oxide ore, has important application value.
Description
Technical field
The present invention relates to technical field of mineral processing, more particularly, to high efficiente callback gold silver in a kind of gold and silver pregnant solution
Beneficiation method, particularly to high efficiente callback gold silver in your liquid that associated silver content from a kind of gold mine is higher, it is achieved gold silver adsorbs
Efficiency and the maximized beneficiation method of silver raising recovery rate.
Background technology
Gold is a kind of noble metal, and symbol of element Au, density is 19.29～19.37g/cm3, there is the characteristic of close ferrum parent's sulfur,
Usual and the sulphide ore such as pyrite, Chalkopyrite in the earth's crust, and the association altogether of the oxide ore such as magnetic iron ore, limonite.Aufe aoxidizes
Ore deposit refers to the class oxidized ore containing gold iron content, and the occurrence status of iron mineral is usually magnetic iron ore, bloodstone, limonite etc..Gold
Occurrence status be generally divided into monomeric gold, crack gold, trapping gold three kinds, and typically more close with the embedding cloth relation of ferrum, because of
This needs overall merit in the formulation of Beneficiation flowsheet.
In terms of the selection of technological process, generally having after first gold gold two kinds after ferrum and first ferrum, wherein after first gold, ferrum is applicable to
The situation that gold disseminated grain size is thicker, on the premise of the response rate of guarantee fund, need to roughly grind as far as possible, returning with beneficially ferrum
Receive, there is the advantage that flow process simply waits；After first ferrum, to be more suitable for the embedding cloth of aufe in close relations for gold, it is difficult to the Ore of monomer dissociation,
The most first corase grind selects ferrum, then packet classification choosing gold, thus reclaims two kinds of elements of aufe to greatest extent, it is achieved comprehensive utilization.
The Chinese patent application of Publication No. CN101348859 discloses a kind of from containing synthetical recovery aufe gold troilite
The method of Sulphur ressource, including by levigate for the middle-low grade pyrite Ore containing micro-gold and trapping gold, gold sulfur bulk flotation, it is thus achieved that
Containing gold highgrade pyrite concentrate, by this concentrate at peroxide roasting in fluidized bed furnace, flue gas acid preparing, slag becomes containing gold slag, then chlorination
Volatilization roasting, flue gas dust collection obtains Gold Concentrate under Normal Pressure, and slag is iron-smelting raw material, synthetical recovery gold, sulfur, three kinds of elements of ferrum, the method
Mainly for containing gold troilite, it is not particularly suited for aufe oxide ore.
China's application of Publication No. CN104404261A discloses a kind of refined gold ore cyaniding tailings chloridising roasting and synchronizes also
Former recovery gold, the method for ferrum, belong to technical field of resource comprehensive utilization, and the method passes through reverse flotation preenrichment, reduces follow-up
Process the energy consumption of technique, it is achieved that the resource of low-grade aufe cyanidation tailings.But the method flow process is complex, object of study
Being mine tailing, if started with from raw ore, technique effect is uncertain.
Xiao Kunming etc. are in " cyanidation tailings experiment on Comprehensive Utilization " (mining industry research and development, 2014,04:85-87.)
Use flotation-roasting-leaching process integration, carry out gold, ferrum and the comprehensive reutilization of sulfur, flotation of sulfur concentrate in cyanidation tailings
Roasting antacid, slag cyanide gold-leaching, leaching slag is iron ore concentrate.
On the whole, this area scientific worker has done substantial amounts of research work for the synthetical recovery of aufe sulphide ore,
But it is less to the achievement in research of aufe oxide ore.It is blank that the present invention has filled up this just, it is desirable to provide a kind of reasonably choosing
Other technological process, thus the embedding cloth of synthetical recovery gold in close relations, two kinds of elements of ferrum.
Summary of the invention
It is an object of the invention to the technological gap for existing aufe oxide ore packet classification synthetical recovery, it is provided that Yi Zhongjin
The beneficiation method of ferrum oxide ore packet classification, the inventive method has advantages such as sorting reasonable, the strong adaptability of order, can realize gold
Synthetical recovery with ferrum.
The purpose of the present invention is achieved by the following technical programs:
The beneficiation method of a kind of aufe oxide ore packet classification is provided, comprises the following steps:
S1. ore grinding: ore grinding accounts for 65～75% to mineral aggregate fineness for-0.074mm；
S2. carry out magnetic separation after being sized mixing by the mineral aggregate after ore grinding, respectively obtain ferromagnetism product and low intensity magnetic separation mine tailing, ferromagnetism
Product is i.e. containing gold magnetic iron ore, and the magnetic field intensity of described magnetic separation is 150～300mT；
S3. it is 700～900mT magnetic separation by low intensity magnetic separation mine tailing through magnetic field intensity, respectively obtains weak magnetic product and non magnetic
Product, weak magnetic product is i.e. containing gold limonite；
S4. gold magnetic iron ore will be contained, containing gold limonite, non-magnetic product Cyanide Leaching respectively；
Described aufe oxide ore is the magnetic iron ore containing gold and limonite ore.
Preferably, the pulp density of ore grinding described in step S2 is set as 50～60% (mass percent concentration).Further
Ground, is to use ball mill to carry out ore grinding.
Preferably, size mixing described in step S2 be by ore grinding after mineral aggregate size mixing (adding water or thickening) obtain concentration and be
The ore pulp of 30% (mass percent concentration).
Preferably, the ore pulp after step S2 is by ore grinding at the uniform velocity adds weak magnetic separator and carries out magnetic separation.Described weak magnetic separator
Preferably employ drum-type weak magnetic separator.
Preferably, step S3 is low intensity magnetic separation mine tailing at the uniform velocity to be added high gradient magnetic separator carry out magnetic separation.Described high gradient
Magnetic separator preferably employs the continuous high gradient magnetic separator of vertical ring and small-scale test machine thereof.
Preferably, the stirring intensity of the Cyanide Leaching described in step S4 is 1350～1450 revs/min.
Preferably, the condition of Cyanide Leaching described in step S4 is: Cyanogran. consumption 1500～2500g/t, pulp density 25
～35% mass percent, slurry pH is 9～11, and extraction time is 24～48 hours, and lime adding amount is 10～20kg/t.
After step S4 leaches containing gold magnetic iron ore, containing gold limonite, non-magnetic product, respectively magnetite product, brown
Iron mine product, mine tailing.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is directed to the magnetic iron ore containing gold and limonite ore science uses and distinguishes cyaniding leaching again through magnetic separation packet classification
The beneficiation method gone out, it is possible to the response rate of ferrum is effectively ensured, solves two kinds of elements of aufe and is sorting contradiction sequentially, fill up
The blank of the art；After raw ore corase grind magnetic separation packet classification, only need to contain gold magnetic iron ore one product and carry out regrinding i.e.
Cyaniding choosing gold can be carried out, be greatly saved ore grinding cost；Mineral are not only grouped by the method for magnetic concentration working of the present invention according to magnetic
Classification, and from granularity, thin mud is attributed in non-magnetic product, thus purified the Cyanide Leaching ring of magnetic iron ore and limonite
Border, eliminates the fine fraction interference to leaching effect, it is adaptable to the synthetical recovery of aufe element in aufe oxide ore.
The present invention accurately sums up the magnetic field intensity of each step packet magnetic separation, by the magnetic iron ore containing gold and limonite ore difference
Through low intensity magnetic separation, high intensity magnetic separation, obtain low intensity magnetic separation concentrate, high intensity magnetic separation concentrate and non-magnetic product, then be separately added into Calx and Cyanogran.
It is stirred leaching, after leaching, finally obtains magnetite concentrate, brown iron ore concentrate and golden liquid.The magnetite concentrate that the present invention obtains
Iron grade is 60～63%, and iron recovery is 30～33%, and the Iron grade of brown iron ore concentrate is 50～52%, iron recovery be 55～
58%, the gold recovery of golden liquid is 90～92%.The present invention provides a kind of response rate high, and the beneficiation method of low cost is suitable
The synthetical recovery of valuable element in aufe oxide ore, has important practical extending application value.
Accompanying drawing explanation
Fig. 1 present invention process flow chart.
Detailed description of the invention
The present invention is further illustrated below in conjunction with specific embodiment.The Ore source of following embodiment explanation is merely cited for
Property explanation, it is impossible to be interpreted as limitation of the present invention.Unless stated otherwise, the raw material used in following embodiment is that this area is normal
The raw material that rule market channel obtains, unless stated otherwise, the method and apparatus used in following embodiment is that this area routine makes
Method and apparatus.
Process chart in the embodiment of the present invention is as shown in Figure 1.
Embodiment 1
The present embodiment is somewhere, Yunnan aufe oxide ore to ore deposit, and wherein iron mineral is mainly magnetic iron ore and limonite, and gold is main
Will be with the embedding cloth of fine fraction in the middle of iron mineral and stone-like pulse.
S1., raw ore and water being mixed into the ore pulp of 50% concentration, adds ore grinding in ball mill, mog is-0.074mm
Account for 65%；
S2. being sized mixing by the ore pulp after ore grinding is at the uniform velocity to add weak magnetic separator after 30% concentration, and magnetic field intensity is 150mT, point
Not obtaining ferromagnetism product and low intensity magnetic separation mine tailing, ferromagnetism product is i.e. containing gold magnetic iron ore；
S3. by low intensity magnetic separation mine tailing add high gradient magnetic separator, magnetic field intensity is 700mT, respectively obtain weak magnetic product and
Non-magnetic product, weak magnetic product is i.e. containing gold limonite；
S4. will contain gold magnetic iron ore, contain gold limonite, non-magnetic product Cyanide Leaching respectively, Cyanogran. consumption 1500g/t,
Pulp density 25%, pH values of pulp=9, extraction time 24 hours.Golden liquid focuses on.
Final products index be magnetite concentrate grade be 63.21%, iron recovery is 30.78%, and brown iron concentrate grade is
50.14%, iron recovery is 55.45%, and in Cyanide Leaching liquid, gold overall recovery is 90.54%.
Embodiment 2
The present embodiment is somewhere, Sichuan aufe oxide ore to ore deposit, and wherein iron mineral is mainly magnetic iron ore and limonite, and gold is main
Will be with the embedding cloth of fine fraction in the middle of iron mineral and stone-like pulse.
S1., raw ore and water being mixed into the ore pulp of 55% concentration, adds ore grinding in ball mill, mog is-0.074mm
Account for 70%；
S2. being sized mixing by the ore pulp after ore grinding is at the uniform velocity to add weak magnetic separator after 30% concentration, and magnetic field intensity is 200mT, point
Not obtaining ferromagnetism product and low intensity magnetic separation mine tailing, ferromagnetism product is i.e. containing gold magnetic iron ore；
S3. by low intensity magnetic separation mine tailing add high gradient magnetic separator, magnetic field intensity is 800mT, respectively obtain weak magnetic product and
Non-magnetic product, weak magnetic product is i.e. containing gold limonite；
S4. will contain gold magnetic iron ore, contain gold limonite, non-magnetic product Cyanide Leaching respectively, Cyanogran. consumption 2000g/t,
Pulp density 30%, pH values of pulp=10, extraction time 36 hours.Golden liquid focuses on.
Final products index be magnetite concentrate grade be 61.38%, iron recovery is 32.12%, and brown iron concentrate grade is
51.85%, iron recovery is 56.32%, and in Cyanide Leaching liquid, gold overall recovery is 91.57%.
Embodiment 3
The present embodiment is somewhere, Shandong aufe oxide ore to ore deposit, and wherein iron mineral is mainly magnetic iron ore and limonite, and gold is main
Will be with the embedding cloth of fine fraction in the middle of iron mineral and stone-like pulse.
S1., raw ore and water being mixed into the ore pulp of 60% concentration, adds ore grinding in ball mill, mog is-0.074mm
Account for 75%；
S2. being sized mixing by the ore pulp after ore grinding is at the uniform velocity to add weak magnetic separator after 30% concentration, and magnetic field intensity is 300mT, point
Not obtaining ferromagnetism product and low intensity magnetic separation mine tailing, ferromagnetism product is i.e. containing gold magnetic iron ore；
S3. by low intensity magnetic separation mine tailing add high gradient magnetic separator, magnetic field intensity is 900mT, respectively obtain weak magnetic product and
Non-magnetic product, weak magnetic product is i.e. containing gold limonite；
S4. will contain gold magnetic iron ore, contain gold limonite, non-magnetic product Cyanide Leaching respectively, Cyanogran. consumption 2500g/t,
Pulp density 35%, pH values of pulp=11, extraction time 48 hours.Golden liquid focuses on.Final products index is Magnet essence
Ore deposit grade is 60.56%, and iron recovery is 30.82%, and brown iron concentrate grade is 50.95%, and iron recovery is 57.14%, cyanogen
Changing gold overall recovery in leachate is 91.07%.
Claims (7)
1. the beneficiation method of an aufe oxide ore packet classification, it is characterised in that comprise the following steps:
S1. ore grinding: ore grinding accounts for 65～75% to mineral aggregate fineness for-0.074mm；
S2. carry out magnetic separation after being sized mixing by the mineral aggregate after ore grinding, respectively obtain ferromagnetism product and low intensity magnetic separation mine tailing, ferromagnetism product
I.e. containing gold magnetic iron ore, the magnetic field intensity of described magnetic separation is 150～300mT；
S3. it is 700～900mT magnetic separation by low intensity magnetic separation mine tailing through magnetic field intensity, respectively obtains weak magnetic product and non-magnetic product,
Weak magnetic product is i.e. containing gold limonite；
S4. gold magnetic iron ore will be contained, containing gold limonite, non-magnetic product Cyanide Leaching respectively；
Described aufe oxide ore is the magnetic iron ore containing gold and limonite ore；
The condition of Cyanide Leaching described in step S4 is: Cyanogran. consumption 1500～2500g/t, pulp density 25～35% mass hundred
Proportion by subtraction, slurry pH is 9～11, and extraction time is 24～48 hours, and lime adding amount is 10～20kg/t.
The beneficiation method of aufe oxide ore packet classification the most according to claim 1, it is characterised in that ore grinding described in step S2
Pulp density be set as 50～60%.
The beneficiation method of aufe oxide ore the most according to claim 1 or claim 2 packet classification, it is characterised in that be to use ball milling
Machine carries out ore grinding.
The beneficiation method of aufe oxide ore packet classification the most according to claim 1, it is characterised in that size mixing described in step S2
Be by ore grinding after mineral aggregate size mixing and obtain the ore pulp that concentration is 30%.
The beneficiation method of aufe oxide ore packet classification the most according to claim 1, it is characterised in that step S2 is by ore grinding
After ore pulp at the uniform velocity add weak magnetic separator and carry out magnetic separation.
The beneficiation method of aufe oxide ore packet classification the most according to claim 5, it is characterised in that described weak magnetic separator
Use drum-type weak magnetic separator.
The beneficiation method of aufe oxide ore packet classification the most according to claim 1, it is characterised in that step S3 is by weak magnetic
Select mine tailing at the uniform velocity to add high gradient magnetic separator and carry out magnetic separation.
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| CN201610156352.5A CN105803185B (en) | 2016-03-18 | 2016-03-18 | A kind of beneficiation method of aufe oxide ore packet classification synthetical recovery |
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| CN105803185B true CN105803185B (en) | 2016-12-14 |
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| CN113388732A (en) * | 2021-05-13 | 2021-09-14 | 西北矿冶研究院 | Beneficiation method for comprehensively recovering iron and gold from iron and gold ore |
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| PH16050A (en) * | 1983-01-14 | 1983-06-02 | Antonio M Dr Ostrea | Gold recovery by sulfhydric-fatty acid flotation as applied to gold ores/cyanidation tailings |
| CN1785527A (en) * | 2004-12-12 | 2006-06-14 | 安阳钢铁集团有限责任公司 | Oxidation ore classification technology |
| CN104404261B (en) * | 2014-12-11 | 2015-10-07 | 江西一元再生资源有限公司 | The method of gold recovering, iron is synchronously reduced in the chloridizing roasting of a kind of refined gold ore cyaniding tailings |
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Effective date of registration: 20171225 Address after: 510000 Changxin Road, Tianhe District, Guangzhou, Guangdong Province, No. 363 courtyard Patentee after: GUANGDONG INSTITUTE OF RESOURCES COMPREHENSIVE UTILIZATION Address before: 510000 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee before: GUANGZHOU Research Institute OF NON FERROUS METALS |
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Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee after: Institute of resource utilization and rare earth development, Guangdong Academy of Sciences Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Institute of resources comprehensive utilization, Guangdong Academy of Sciences |
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Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee after: Institute of resources comprehensive utilization, Guangdong Academy of Sciences Address before: 510000 courtyard, no.363, Changxing Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG INSTITUTE OF RESOURCES COMPREHENSIVE UTILIZATION |