CN104190533B - Method for recovering quartz in iron tailing and quartz mine prepared by same - Google Patents

Method for recovering quartz in iron tailing and quartz mine prepared by same Download PDF

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Publication number
CN104190533B
CN104190533B CN201410351869.0A CN201410351869A CN104190533B CN 104190533 B CN104190533 B CN 104190533B CN 201410351869 A CN201410351869 A CN 201410351869A CN 104190533 B CN104190533 B CN 104190533B
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reverse flotation
ton
quartz
concentrate
mine
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CN104190533A (en
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陈述明
王杨
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Hunan Xinsheng Mining And Metallurgy Waste Comprehensive Utilization Science & Technology Co Ltd
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Hunan Xinsheng Mining And Metallurgy Waste Comprehensive Utilization Science & Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/52Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly

Abstract

The invention provides a method for recovering quartz in an iron tailing and a quartz mine prepared by the same. The method at least comprises the following steps: (1) the iron tailing is classified by a hydrocyclone to obtain settled sands; and (2) the reverse flotation is performed for the settled sands to obtain a first quartz mine, and at least comprises sulfur removal reverse flotation, iron removal reverse flotation, carbon removal reverse flotation and first silicate removal reverse flotation. The method for recovering the quartz in the iron tailing, provided by the invention, is suitable for the iron tailing with low grade and high impurity content, and can fully recover silicon dioxide in the iron tailing; the purity of obtained silicon dioxide can reach 99.6%; and the yield also reaches 15-20%. The obtained quartz product can totally serve as a further deep processing raw material in the quartz application field.

Description

Reclaim the method for quartz and the quartz mine being prepared by the method in iron tailings
Technical field
The present invention relates to iron tailings recycle field, especially, be related to a kind of reclaim iron tailings in quartz method and The quartz mine being prepared by the method.
Background technology
The at present comprehensive utilization to iron tailings, major part has only reclaimed ferrum therein, reclaim the secondary mine tailing after ferrum due to Impurity contained therein mostly is siliceous class material, is suitable for use in production fragment of brick or other construction materials, and added value of product is low, ferrum tail Ore deposit is made a low multiple use.
Quartz is inorganic mineral, and its main component is silicon dioxide, often contains a small amount of other impurities, such as aluminium sesquioxide, oxygen Change calcium, iron sesquioxide, magnesium oxide etc..Quartz is of many uses, can be used for producing silica sand, silica refractory and fires silicon Ferrum, can be also used for manufacturing the bearing of precision instrument, grinding-material, glass, pottery etc..Quartz is many at present carries from quartzy raw ore Take, the grade of quartzy raw ore is very high, general dioxide-containing silica is more than 98%, and the grade of the silicon dioxide in iron tailings mostly is 70~80%, reclaim the quartzy difficulty of purification from iron tailings and be more than extraction from quartzy raw ore.Thus to containing stone in prior art Carrying out the larger iron tailings of English amount in the production be directly used in construction material, that mentions in such as cn201110278958.3 uses ferrum more Mine tailing substitutes fine quartz sand and manufactures external thermal insulation polymer mortar etc..Greatly reduce the value of quartz in iron tailings.
In addition, the iron oxide content of quartzy raw ore is generally below 0.1%, alumina content is generally below 0.5%, and ferrum tail In ore deposit, iron content is 12~17%, and alumina content is 3~5%, and high again increased of impurity content reclaims the difficulty using.
Content of the invention
Present invention aim at providing the method for quartz and the quartz being prepared by the method in a kind of recovery iron tailings Ore deposit, effectively to reclaim quartz from iron tailings.
For achieving the above object, according to an aspect of the invention, it is provided a kind of reclaim quartzy method in iron tailings, Comprise the following steps: 1) iron tailings is carried out with the first screening and obtains+100 purpose the first ore pulps and -100 purpose the second ore pulps;2) Ball milling, magnetic separation are carried out to the first ore pulp, obtains the first magnetic tailing;Second screening is carried out to the second ore pulp and obtains -100~+400 Purpose the 3rd ore pulp, carries out ball milling, magnetic separation to the 3rd ore pulp, obtains the second magnetic tailing;By the first magnetic tailing and the second magnetic After selecting mine tailing mixing, classification is carried out using cyclone separator and obtain sand setting;3) reverse flotation is carried out to sand setting, obtain the first quartz mine; Sulphur removal reverse flotation that reverse flotation at least includes carrying out successively, remove silicate reverse flotation except ferrum reverse flotation, except carbon reverse flotation and first.
Further, in sand setting, full Iron grade is 0.5~1.0%, and dioxide-containing silica is 94~96%.
Further, sulphur removal reverse flotation comprises the following steps: the ph value of sand setting is adjusted to 8~8.5, adds copper sulfate 200 ~400g/ ton, xanthic acid 100~150g/ ton and terpenic oil 40~60g/ ton, carry out one and slightly sweep obtaining the first mine tailing and first Concentrate;Preferred pair first concentrate carries out repeatedly the selected troilite concentrate obtaining full sulfur grade >=38%.
Further, except ferrum reverse flotation comprises the following steps: after the ph value of the first mine tailing is adjusted to 8~9, add Oleic acid 60 Slightly sweep through one after~100g/ ton, obtain ferrous contaminants and the second mine tailing.
Further, except carbon reverse flotation comprises the following steps: after the second mine tailing ph value is adjusted to 8~9, add 200~ The terpenic oil of the kerosene of 300g/ ton and 100~150g/ ton carries out reverse flotation and obtains carbon-containing impurities and the 3rd mine tailing.
Further, first comprise the following steps except silicate reverse flotation: add 8~10kg/ ton in the 3rd mine tailing Sulphuric acid and the hf of 500~800g/ ton, the ph value of adjustment the 3rd mine tailing is 2~3;300~500g/ ton is added in the 3rd mine tailing Mixed amine acetate as collecting agent, the terpenic oil of 40~80g/ ton, as foaming agent, sweeps, through one thick six, the first stone obtaining English ore deposit and the 6th concentrate;4th concentrate by two be swept to six sweep generation concentrate mixture.
Further, also include the 4th concentrate being carried out with second except silicate reverse flotation, second removes silicate reverse flotation bag Include following steps: add 3~5kg/ ton sulphuric acid and 200~300g/ ton hf in the 4th concentrate;The ph value adjusting the 4th concentrate is 2~3, add 100~200g/ ton mixed amine acetate as collecting agent and 20~40g/ ton terpenic oil as foaming agent, Through four times second except silicate reverse flotation obtains the second quartz mine.
Further, mixed amine acetate is diluted to after being mixed for 1:1~1.5 by volume with acetic acid for mixed amine Solution is heated to 50~80 DEG C and obtains by the solution of 1.wt% afterwards.
Further, ball milling step stop condition is that in the first concentrate and the second concentrate, particle diameter is -400 target minreal contents For 50~60%;Preferably first to sieve be to be carried out using high frequency fine screen, and second to sieve be two sections of water using φ 150 and φ 100 Power cyclone.
Additionally provide one kind according to a further aspect in the invention to be prepared into using such as any one of claim 1~9 method The quartz mine arriving, dioxide-containing silica >=99.6% in quartz mine.
The method have the advantages that
A kind of method reclaiming quartz in iron tailings of offer that the present invention provides is it is adaptable to low-grade, high impurity content Silicon dioxide therein can fully be reclaimed by iron tailings, and up to 99.6%, yield has also reached 15- to gained silica purity 20%.Gained quartz product can use the raw material of the further deep processing in field completely as quartz.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages. Below with reference to figure, the present invention is further detailed explanation.
Brief description
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is a kind of schematic flow sheet of preferred embodiment of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can be defined by the claims Implement with the multitude of different ways covering.
Slightly refer to herein corresponding mineral are roughly selected, term " is thick " refers to carry out one roughing to corresponding mineral, Sweep and refer to corresponding mineral are scanned, term " sweeping " refers to corresponding mineral are scanned successively.Wherein herein+100 After mesh refers to that ore pulp crosses 100 mesh sieves, oversize.After -100 mesh refer to that ore pulp crosses 100 mesh sieves, siftage, other are similar to herein Represent by that analogy.
One aspect of the present invention provides a kind of method reclaiming quartz in iron tailings, comprises the following steps: 1) to iron tailings Carry out the first screening and obtain+100 purpose the first ore pulps and -100 purpose the second ore pulps;2) ball milling, magnetic separation are carried out to the first ore pulp, Obtain the first magnetic tailing;Second ore pulp is carried out with the second screening and obtains -100~+400 purpose the 3rd ore pulp, to the 3rd ore pulp Carry out ball milling, magnetic separation, obtain the second magnetic tailing;Adopt cyclonic separation by after the first magnetic tailing and the mixing of the second magnetic tailing Device carries out classification and obtains sand setting;3) reverse flotation is carried out to sand setting, obtain the first quartz mine;Reverse flotation at least includes carrying out successively Sulphur removal reverse flotation, except ferrum reverse flotation, except carbon reverse flotation and first remove silicate reverse flotation.
Referring to Fig. 1, iron tailings is carried out the first screening by the method first, afterwards the first screening gained second ore pulp is carried out Second screening, obtaining particle diameter is -100~+400 purpose the 3rd ore pulp.Gained first ore pulp and the 3rd ore pulp carry out respectively ball milling, Magnetic separation.Because quartz dopant species contained in the ore pulp of two kinds of particle diameters are different, after classification, ball milling can guarantee that the first ore deposit again In slurry and the 3rd ore pulp, contained quartz components fully dissociate out from other silicate impurities, carry out standard for follow-up recovery Standby.If not grading ball milling, in iron tailings, contained all kinds of silicate impurities cannot fully be dissociated.So that wherein much containing The silicate impurity of quartz mine cannot be dissociated, and the impurity of some small particles then can be subject to overmastication, thus destroying The silicate impurity of extractable quartz mine therein, thus cause the too low problem of the quartz mine response rate.If do not carried out point Level directly carries out being classified to iron tailings and cannot obtain highly purified quartz mine.Can only obtain the quartz that purity is 90% about Ore deposit.And such quartz mine can only be used as construction material.The intensity that magnetic separation preferably employs 15000~18000gs carries out three magnetic separation. Carry out magnetic separation by this, can guarantee that and the ferrum in gained mineral is extracted as far as possible, it is to avoid in subsequent separation process, iron content The impact to quartz mine purity for the silicate impurity.
The first magnetic tailing obtaining after first ore pulp and the 3rd ore pulp magnetic separation and the second magnetic tailing are mixed, is adopted Carry out classification with cyclone separator and obtain sand setting.Thin mud Impurity removal in iron tailings can be beneficial to using cyclone separator Subsequent recovery utilizes.Cyclone separator preferably used is hydrocyclone.Using this separator, separating effect is optimum.This In iron tailings used by invention, dioxide-containing silica is 70~80%, and iron content is 12~17%, and alumina content is 3~5%.Right After it carries out conventional sorting process, iron content therein is reduced further.Can be obtained by magnetic separation.Preferably iron tailings is divided After level is for+100 mesh ore pulps and -100 mesh ore pulps, respectively it is carried out using the magnetic field intensity of 15000~18000gs, three magnetic Choosing.Now efficiency high, good iron removal effect.
In iron tailings, contained ore pulp particle size range is wider, in order to improve anti-floatation effeciency, is preferably classified iron tailings, It is made to be divided into+100 purpose the first ore pulps and -100~+400 purpose the second ore pulps, afterwards respectively to the first ore pulp and the second ore pulp Carry out above-mentioned reverse flotation step.The higher quartz mine of purity equally can be obtained.In first ore pulp and the second ore pulp gained quartz mine Contained remaining siliceous impurity is different, can carry out deep processing to it respectively by different technique afterwards, to lift gained quartz The purity of ore deposit.
Ball milling step stop condition is that in described first concentrate and described second concentrate, particle diameter is -400 target minreal contents For 50~60%.Ball milling and magnetic separation are carried out to the 3rd ore pulp.Preferably before ball milling, the 3rd ore pulp is concentrated, to improve ball milling Efficiency.In 3rd ore pulp after ball milling particle diameter be -400 mesh ore pulp content be 50~60%.In first ore pulp and the 3rd ore pulp- The content of 400 mesh ore pulps is identical, is found by experiment that, the ore pulp using this particle diameter can be effectively by the first ore pulp and the 3rd ore pulp Iron compound dissociates out, is conducive to subsequent recovery ferrum contained therein.If the first ore pulp and the 3rd ore pulp particle diameter mistake after ball milling Carefully, the recovery response rate of ferrum and the full Iron grade of gained iron ore concentrate can be reduced on the contrary.First ore pulp and the most preferably after ball milling In two ore pulps, the content of -400 mesh ore pulps is 60%, the now response rate of ferrum and gained Iron grade highest.
Carry out the first screening again after preferably the concentration of iron tailings being adjusted to 15~20%.By adjusting concentration, can improve Grinding efficiency, can also improve the dissociation to dirt simultaneously, improve the iron content of gained first ore pulp and the 3rd ore pulp, after being Continuous purification improves advantage.Preferably first screening adopts high frequency fine screen, can improve screening efficiency.Preferably second screening adopts two Section hydrocyclone φ 150 and φ 100, can obtain best screening efficiency, reduce impurity content and prepare.Gained first, Two magnetic tailing mixture carry out secondary grading using hydrocyclone, take off thin mud and obtain sand setting.
Above-mentioned adjustment ph value can be carried out using all kinds of common alkali, it is preferred to use sodium carbonate is carried out, using sodium carbonate, price Cheap, may advantageously facilitate reverse floatation process and the removal of all kinds of impurity is acted on.
In gained sand setting, full Iron grade is 0.5~1.0%, and dioxide-containing silica is 94~96%.Carried out using this sand setting Follow-up reverse flotation, can guarantee that the purity of gained first quartz mine is more than 99%.Afterwards multiple reverse flotation is carried out to gained sand setting, Sand setting is carried out with sulphur removal reverse flotation that reverse flotation at least includes carrying out successively, removes silicon except ferrum reverse flotation, except carbon reverse flotation and first Hydrochlorate reverse flotation.It is found by experiment that the presence of sulfur-containing impurities has considerable influence to the effect performance of follow-up collecting agent, thus First the sulfur-containing impurities in sand setting are removed.Sulphur removal reverse flotation can routinely sulphur removal reverse flotation be carried out.
Sulphur removal reverse flotation step preferably used comprises the following steps: the ph of sand setting is adjusted to 8~8.5, adds copper sulfate 200 ~400g/ ton, xanthic acid 100~150g/ ton and terpenic oil 40~60g/ ton, carry out one and slightly sweep obtaining the first mine tailing and first Concentrate;Preferred pair first concentrate carries out repeatedly the selected troilite concentrate obtaining full sulfur grade >=38%.Preferably employ four skies Bai Jingxuan obtains troilite concentrate.By this number of times carry out selected can efficiently easily, by the sulfur-containing impurities in sand setting at utmost Removing.Improve the silicone content of gained first mine tailing, reduce the wherein impact to follow-up reverse flotation for the sulfur-containing impurities.Preferably can be right Gained first concentrate carry out four times selected, obtain the troilite concentrate of full sulfur grade >=38%.Selected can be right according to a conventional method Troilite carries out selected.First reverse flotation is carried out to the sulfur-containing impurities in sand setting, the higher impurity of sulfur content can be obtained, thus only Need to be by the selected troilite concentrate that can get full sulfur grade >=38%.This technique is enable once to obtain multiple product.Carry High efficiency.Carry out reverse flotation using this technique institute's sulfur-containing impurities in sand setting can be removed totally.
Except the reverse floatation process that ferrum reverse flotation can routinely remove ferrum is carried out.Preferably comprise the following steps except ferrum instead floats: will After the ph value of the first mine tailing is adjusted to 8~9, slightly sweeps through one after adding Oleic acid 60~100g/ ton, obtain ferrous contaminants and the second tail Ore deposit.Reverse flotation is carried out using the method, need not be by magnetic separation it is only necessary to pass through reverse flotation, by micro in the second mine tailing containing ferra Matter is separated with the first mine tailing, and the content of the iron tramp in reduction gained first quartz mine is so as to content is less than 0.3%.Removing While ferrous contaminants, sulphur impurity contained therein is removed further, so that not sulfur-containing impurities in the first quartz mine.
Except carbon reverse flotation can carry out carbon removal treatment using conventional reverse flotation method.Preferably except carbon reverse flotation includes following step Rapid: after the second mine tailing ph is 8~9, to add the terpenic oil of the kerosene of 200~300g/ ton and 100~150g/ ton counter to be floated Choosing obtains carbon-containing impurities and the 3rd mine tailing.Reverse flotation is carried out using the method, can be by the carbon-containing impurities in the second mine tailing and second Mine tailing separate so that in the first quartz mine carbon content extremely low.Reverse flotation is carried out using this technique, the reverse flotation effect to carbon-containing impurities Fruit is optimum.
In 3rd mine tailing, wherein siliceous impurity is not merely quartz crystal structure, and also includes other a lot of silicate Class impurity.These impurity are close with quartz body composition silicon dioxide structure, directly carry out except silicate reverse flotation to sand setting, It is difficult to remove.Now the 3rd mine tailing is carried out except silicate reverse flotation, because sulphur impurity contained therein, iron tramp and carbon impurity are equal Remove, these impurity reduce to the interference of reverse flotation silicate, thus can remove the most of silicate in the 3rd mine tailing. Preferably first comprises the following steps except silicate reverse flotation: add in the 3rd mine tailing the sulphuric acid of 8~10kg/ ton and 500~ The hf of 800g/ ton, the ph of adjustment the 3rd mine tailing is 2~3;The mixed amine acetate of 300~500g/ ton is added in the 3rd mine tailing As collecting agent, the terpenic oil of 40~80g/ ton, as foaming agent, sweeps the first quartz mine obtaining and the 4th concentrate through one thick six Carry out main quartz therein being separated with other mixture by this reverse floatation process, especially can be by silicate impurity therein Remove.The mixed amine of mixed amine acetate wherein used refers to lauryl amine to the mixture of 18-amine..It is specially percentage by volume Lauryl amine for 60% and the 18-amine. composition that percentage by volume is 40%.
Mixed amine acetate wherein used refers to that mixed amine is diluted to after being mixed for 1:1~1.5 by volume with acetic acid Solution is heated to 50~80 DEG C and obtains by the solution of 1.wt% afterwards.Mixed amine is water-fast material, by anti-with acetic acid Should after form mixed amine acetate and then water can be dissolved in.
In one thick gained concentrate, quartz content is relatively low, thus is unsuitable for carrying out reverse flotation again, and the 4th concentrate is swept to for two Six mixture sweeping produced concentrate.In order to improve the response rate of quartz mine, preferred pair gained the 4th concentrate carries out second and removes silicon Hydrochlorate reverse flotation.Can be routinely except silicate reverse flotation method be carried out, preferably second includes following step except silicate reverse flotation Rapid: to add 3~5kg/ ton sulphuric acid and 200~300g/ ton hf in the 4th concentrate, adjustment ph is 2~3, adds 100~200g/ The mixed amine acetate of ton as collecting agent and 20~40g/ ton terpenic oil as foaming agent, obtain the through four reverse flotations Two quartz mines.According to said method carry out, the quartz in the 4th concentrate fully can be reclaimed and obtain the of quartzy high purity 99.1% Two quartz mines.
In first quartz mine and the second quartz mine, ingredient is listed in Table 1 below.
Table 1 first quartz mine and the second quartz mine component list
Title sio2 fe2o3 al2o3 tio2 na2o k2o cao mgo
First quartz mine 99.6 0.2288 0.02457 0.002 0.0057 0.0044 0.152 0.0089
Second quartz mine 99.1 0.3004 0.2563 0.0018 0.01 0.0062 0.155 0.018
From table 1, the method being provided using the present invention can be effectively by all kinds of Impurity removals contained in iron tailings, by it In quartzy reverse flotation out, obtain the higher quartz concentrate of purity.Sulphur impurity and carbon in first quartz mine and the second quartz mine Impurity content almost can not be detected.This has absolutely proved the actual effect of the method that the present invention provides.And the method for the present invention Simply can achieve it is only necessary to reverse flotation is carried out to it, and the response rate reaches 25%.Make it have sufficient industry practicality valency Value.
Another aspect of the present invention additionally provides a kind of quartz mine, and quartz mine carries out reverse flotation using said method and obtains, Wherein dioxide-containing silica >=99.1%.
Embodiment
In following examples device therefor and raw material be commercially available.Mixed amine is by the mixing referring to lauryl amine and 18-amine. Thing, is 60% lauryl amine and 18-amine. that percentage by volume is 40% composition.This mixture uses as cation-collecting agent.
Embodiment 1
1) by high frequency fine screen, the first screening is carried out to iron tailings (full Iron grade is 12%, and dioxide-containing silica is 70%) Obtain+100 purpose the first ore pulps and -100 purpose the second ore pulps;
2) the first ore pulp is carried out with ball milling until wherein particle diameter is 50% for -400 target minreal contents, using 15000gs Carry out three magnetic separation, mix each gained mine tailing, obtain the first magnetic tailing;
Using two sections of hydrocyclones of φ 150 and φ 100, second screening is carried out to the second ore pulp and obtains -100~+400 Purpose the 3rd ore pulp, carries out ball milling until wherein particle diameter is 50% for -400 target minreal contents, adopts to the 3rd ore pulp 15000gs carries out three magnetic separation, mixes each gained mine tailing, obtains the second magnetic tailing;
Obtain sand setting by classification being carried out using cyclone separator after the first magnetic tailing and the mixing of the second magnetic tailing;Sand setting In full Iron grade be 0.5%, dioxide-containing silica is 94%.
3) carry out sulphur removal reverse flotation to sand setting to comprise the following steps: adding sodium carbonate to adjust ph into sand setting is 8, adds sulfur Sour copper 200g/ ton, xanthic acid 100g/ ton and terpenic oil 40g/ ton, carry out one and slightly sweep obtaining the first mine tailing and the first concentrate;
First concentrate is carried out on flotation device with the selected troilite concentrate obtaining full sulfur grade >=38% of four blank;
4) comprise the following steps except ferrum instead floats: after adding sodium hydroxide regulation ph to be 8 to the first mine tailing, addition Oleic acid 60g/ Slightly sweep through one after ton, obtain ferrous contaminants and the second mine tailing;
5) except carbon reverse flotation comprises the following steps: after adding sodium carbonate regulation ph to be 8 to the second mine tailing, add 200g/ ton Kerosene and the terpenic oil of 100g/ ton carry out reverse flotation and obtain carbon-containing impurities and the 3rd mine tailing;
6) first comprise the following steps except silicate reverse flotation: add sulphuric acid and the 500g/ of 8kg/ ton in the 3rd mine tailing The hf of ton;The ph adjusting the 3rd mine tailing is 2;Mixed amine acetate (the mixed amine acetate of 300g/ ton is added in the 3rd mine tailing It is diluted to the solution of 1.wt% after mixing for 1:1 by volume with acetic acid for mixed amine, afterwards solution is heated to 50 DEG C and obtains Arrive.) as collecting agent, the terpenic oil of 40g/ ton, as foaming agent, sweeps the first quartz mine obtaining and the 4th concentrate through one thick six; 4th concentrate by two be swept to six sweep generation concentrate mixture;
7) the 4th concentrate carries out second and removes silicate reverse flotation, and second comprises the following steps except silicate reverse flotation: to the 3kg/ ton sulphuric acid and 200g/ ton hf is added, adjusting ph is 2, adds the mixed amine acetate (mixed amine of 100g/ ton in four concentrate Acetate is diluted to the solution of 1.wt% for mixed amine after mixing for 1:1 by volume with acetic acid, afterwards solution is heated to 50 DEG C obtain.) as collecting agent and 20g/ ton terpenic oil as foaming agent, through four times second except silicate reverse flotation obtains Two quartz mines.
Embodiment 2
1) by high frequency fine screen, the first screening is carried out to iron tailings (full Iron grade is 17%, and dioxide-containing silica is 80%) Obtain+100 purpose the first ore pulps and -100 purpose the second ore pulps;
2) the first ore pulp is carried out with ball milling until wherein particle diameter is 60% for -400 target minreal contents, using 18000gs Carry out secondary magnetic separation, mix each gained mine tailing, obtain the first magnetic tailing;
Using two sections of hydrocyclones of φ 150 and φ 100, second screening is carried out to the second ore pulp and obtains -100~+400 Purpose the 3rd ore pulp, carries out ball milling until wherein particle diameter is 65% for -400 target minreal contents, adopts to the 3rd ore pulp 18000gs carries out secondary magnetic separation, mixes each gained mine tailing, obtains the second magnetic tailing;
Obtain sand setting, sand setting by classification being carried out using cyclone separator after the first magnetic tailing and the mixing of the second magnetic tailing In full Iron grade be 1.0%, dioxide-containing silica is 96%.
3) carry out sulphur removal reverse flotation to sand setting to comprise the following steps: adding sodium hydroxide to adjust ph into sand setting is 8.5, plus Enter copper sulfate 400g/ ton, xanthic acid 150g/ ton and terpenic oil 60g/ ton, carry out one slightly sweep obtain the first mine tailing and first essence Ore deposit;
First concentrate is carried out on flotation device with the selected troilite concentrate obtaining full sulfur grade >=38% of four blank;
4) comprise the following steps except ferrum instead floats: after adding sodium hydroxide regulation ph to be 9 to the first mine tailing, addition Oleic acid Slightly sweep through one after 100g/ ton, obtain ferrous contaminants and the second mine tailing;
5) except carbon reverse flotation comprises the following steps: after adding sodium hydroxide regulation ph to be 9 to the second mine tailing, add 300g/ The terpenic oil of the kerosene of ton and 150g/ ton carries out reverse flotation and obtains carbon-containing impurities and the 3rd mine tailing;
6) first comprise the following steps except silicate reverse flotation: add sulphuric acid and the 800g/ of 10kg/ ton in the 3rd mine tailing The hf of ton, the ph of adjustment the 3rd mine tailing is 3;Mixed amine acetate (the mixed amine acetate of 500g/ ton is added in the 3rd mine tailing It is diluted to the solution of 1.wt% after mixing for 1:1.5 by volume with acetic acid for mixed amine, afterwards solution is heated to 80 DEG C and obtains Arrive.) as collecting agent, the terpenic oil of 80g/ ton, as foaming agent, sweeps the first quartz mine obtaining and the 4th concentrate through one thick six; 4th concentrate by two be swept to six sweep generation concentrate mixture;
7) the 4th concentrate carries out second and removes silicate reverse flotation, and second comprises the following steps except silicate reverse flotation: to the 5kg/ ton sulphuric acid and 300g/ ton hf is added, adjusting ph is 3, adds the mixed amine acetate (mixed amine of 200g/ ton in four concentrate Acetate is diluted to the solution of 1.wt% for mixed amine after mixing for 1:1.5 by volume with acetic acid, be heated to solution afterwards 80 DEG C obtain.) as collecting agent and 40g/ ton terpenic oil as foaming agent, through four times second except silicate reverse flotation obtains Second quartz mine.
Embodiment 3
1) by high frequency fine screen, the first screening is carried out to iron tailings (full Iron grade is 15%, and dioxide-containing silica is 75%) Obtain+100 purpose the first ore pulps and -100 purpose the second ore pulps;
2) the first ore pulp is carried out with ball milling until wherein particle diameter is 56% for -400 target minreal contents, using 17000gs Carry out three magnetic separation, mix each gained mine tailing, obtain the first magnetic tailing;
Using two sections of hydrocyclones of φ 150 and φ 100, second screening is carried out to the second ore pulp and obtains -100~+400 Purpose the 3rd ore pulp, carries out ball milling until wherein particle diameter is 56% for -400 target minreal contents, adopts to the 3rd ore pulp 17000gs carries out three magnetic separation, mixes each gained mine tailing, obtains the second magnetic tailing;
Obtain sand setting, sand setting by classification being carried out using cyclone separator after the first magnetic tailing and the mixing of the second magnetic tailing In full Iron grade be 0.8%, dioxide-containing silica is 95%.
3) carry out sulphur removal reverse flotation to sand setting to comprise the following steps: adding sodium hydroxide to adjust ph into sand setting is 8, adds Copper sulfate 300g/ ton, xanthic acid 120g/ ton and terpenic oil 50g/ ton, carry out one and slightly sweep obtaining the first mine tailing and the first concentrate;
First concentrate is carried out on flotation device with the selected troilite concentrate obtaining full sulfur grade >=38% of four blank;
4) comprise the following steps except ferrum instead floats: after adding sodium carbonate regulation ph to be 8.5 to the first mine tailing, addition Oleic acid 70g/ Slightly sweep through one after ton, obtain ferrous contaminants and the second mine tailing;
5) except carbon reverse flotation comprises the following steps: after adding sodium carbonate regulation ph to be 8.5 to the second mine tailing, add 250g/ The terpenic oil of the kerosene of ton and 125g/ ton carries out reverse flotation and obtains carbon-containing impurities and the 3rd mine tailing;
6) first comprise the following steps except silicate reverse flotation: add sulphuric acid and the 600g/ of 9kg/ ton in the 3rd mine tailing The hf of ton, the ph of adjustment the 3rd mine tailing is 2.5;Mixed amine acetate (the mixed amine acetic acid of 400g/ ton is added in the 3rd mine tailing Salt is diluted to the solution of 1.wt% for mixed amine after mixing for 1:1.2 by volume with acetic acid, afterwards solution is heated to 60 DEG C Obtain.) as collecting agent, the terpenic oil of 50g/ ton, as foaming agent, sweeps the first quartz mine obtaining and the 4th essence through one thick six Ore deposit;4th concentrate by two be swept to six sweep generation concentrate mixture;
7) the 4th concentrate carries out second and removes silicate reverse flotation, and second comprises the following steps except silicate reverse flotation: to the Add 4kg/ ton sulphuric acid and 250g/ ton hf in four concentrate, adjusting ph is 2.5, add the mixed amine acetate (mixing of 150g/ ton Amine acetate is diluted to the solution of 1.wt% for mixed amine after mixing for 1:1.3 by volume with acetic acid, heat solution afterwards Obtain to 60 DEG C.) as collecting agent and 30g/ ton terpenic oil as foaming agent, through four times second except silicate reverse flotation obtains To the second quartz mine.
Embodiment 4
With embodiment 3 and be:
1) using high frequency fine screen, the first screening is carried out to iron tailings (all iron content is 17%, and dioxide-containing silica is 80%) Obtain+100 purpose the first ore pulps and -100 purpose the second ore pulps;
2) the first ore pulp is carried out with ball milling until wherein particle diameter is 60% for -400 target minreal contents, during magnetic separation, magnetic field is strong Spend for 18000gs, carry out three magnetic separation, mix each gained mine tailing, obtain the first magnetic tailing;
Using two sections of hydrocyclones of φ 150 and φ 100, second screening is carried out to the second ore pulp and obtains -100~+400 Purpose the 3rd ore pulp.3rd ore pulp is carried out after ball milling using 18000gs, during magnetic separation, magnetic field intensity is 18000gs, carries out three times Magnetic separation, mixes each gained mine tailing, obtains the second magnetic tailing;
First magnetic tailing and the mixing of the second magnetic tailing are classified, carry out being classified using hydrocyclone To sand setting, in sand setting, full Iron grade is 0.8%, and dioxide-containing silica is 95%.
3) respectively multiple reverse flotation is carried out to gained first sand setting and the second sand setting.Reverse flotation step is same as Example 3. Obtain first step quartz mine and the second quartz mine.
Embodiment 5
Difference with embodiment 1 is: does not carry out second and removes silicate reverse flotation.Obtain first step quartz mine.
Comparative example 1
Difference with embodiment 3 is: sulphur removal reverse flotation that gained sand setting is carried out, floats except ferrum reverse flotation, except carbon is counter Choosing, first remove silicate reverse flotation and second and remove silicate reverse flotation condition and be first except silicate reverse flotation.Obtain first Quartz mine and the second quartz mine.
Gained first quartz mine and the second quartz mine purity, the quartzy response rate and gained in embodiment 1~5 and comparative example 1 The full sulfur grade of troilite concentrate is listed in Table 2 below.
Acquired results in table 2 embodiment 1~6 and comparative example 1
From table 2, in embodiment 1~5, the purity of quartz mine is above 99%, and the side being provided using the present invention is described Method, can obtain the higher quartz mine of purity, and the mineral of other crystal forms in siliceous class impurity are removed, and improve gained quartz The purity of ore deposit.The quartzy response rate of the response rate up to 25% can also be obtained simultaneously.Improve production efficiency, it is to avoid simply repeat counter floating Choosing cannot obtain higher quartzy purity and the quartzy response rate.Sulfur iron ore concentrate can also be reclaimed, its full sulfur grade is up to 38% simultaneously More than.Obtain other by-products such as sulfur iron ore concentrate while obtaining quartz, the added value of production process is provided.
From comparative example 1, if only repeated reverse flotation is carried out to sand setting, by the removed roguing of each reverse flotation Matter is silicate, can not reduce sulfur-containing impurities contained therein, ferrous contaminants and carbon-containing impurities in follow-up reverse floatation process The impact of Impurity removal, thus cannot effectively improve the purity of gained first quartz mine and the second quartz mine.Thus explanation is originally The method that invention provides is different according to institute's removal of impurity species, it is removed with the selection of order, is favorably improved the pure of products therefrom Degree and the response rate.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made, Equivalent, improvement etc., should be included within the scope of the present invention.

Claims (11)

1. a kind of method reclaiming quartz in iron tailings is it is characterised in that comprise the following steps:
1) described iron tailings is carried out with the first screening and obtains+100 purpose the first ore pulps and -100 purpose the second ore pulps;
2) ball milling, magnetic separation are carried out to described first ore pulp, obtain the first magnetic tailing;
Second screening is carried out to described second ore pulp and obtains -100~+400 purpose the 3rd ore pulp, ball is carried out to described 3rd ore pulp Mill, magnetic separation, obtain the second magnetic tailing;
Obtain sand setting by classification being carried out using cyclone separator after described first magnetic tailing and described second magnetic tailing mixing;
3) reverse flotation is carried out to described sand setting, obtain the first quartz mine;
Sulphur removal reverse flotation that described reverse flotation at least includes carrying out successively, remove silicic acid except ferrum reverse flotation, except carbon reverse flotation and first Salt reverse flotation.
2. method according to claim 1 it is characterised in that in described sand setting full Iron grade be 0.5~1.0%, dioxy SiClx content is 94~96%.
3. method according to claim 1 is it is characterised in that described sulphur removal reverse flotation comprises the following steps: will be described heavy The ph value of sand is adjusted to 8~8.5, adds copper sulfate 200~400g/ ton, xanthic acid 100~150g/ ton and terpenic oil 40~60g/ Ton, carries out one and slightly sweeps obtaining the first mine tailing and the first concentrate.
4. method according to claim 3 is it is characterised in that described comprise the following steps except ferrum reverse flotation: by described After the ph value of one mine tailing is adjusted to 8~9, slightly sweeps through one after adding Oleic acid 60~100g/ ton, obtain ferrous contaminants and the second tail Ore deposit.
5. method according to claim 4 is it is characterised in that described comprise the following steps except carbon reverse flotation: by described After two mine tailing ph values are adjusted to 8~9, the kerosene of 200~300g/ ton and the terpenic oil of 100~150g/ ton is added to carry out reverse flotation and obtain To carbon-containing impurities and the 3rd mine tailing.
6. method according to claim 5 is it is characterised in that described first comprises the following steps except silicate reverse flotation: The sulphuric acid of 8~10kg/ ton and the hf of 500~800g/ ton is added in described 3rd mine tailing;Adjust the ph value of described 3rd mine tailing For 2~3;Add the mixed amine acetate of 300~500g/ ton as collecting agent in described 3rd mine tailing, 40~80g/ ton Terpenic oil, as foaming agent, sweeps described first quartz mine obtaining and the 4th concentrate through one thick six;Described 4th concentrate is swept for two To six mixture sweeping produced concentrate.
7. method according to claim 6 is it is characterised in that also include described 4th concentrate being carried out with second except silicate Reverse flotation, described second comprises the following steps except silicate reverse flotation: in described 4th concentrate add 3~5kg/ ton sulphuric acid and 200~300g/ ton hf;The ph value adjusting described 4th concentrate is 2~3, adds the mixed amine acetate of 100~200g/ ton to make For collecting agent and 20~40g/ ton terpenic oil as foaming agent, through four times described second except silicate reverse flotation obtains second Quartz mine.
8. the method according to claim 6 or 7 is it is characterised in that described mixed amine acetate is pressed with acetic acid for mixed amine Volume ratio is to be diluted to the solution of 1.wt% after 1:1~1.5 mix, and afterwards solution is heated to 50~80 DEG C and obtains.
9. method according to claim 8 it is characterised in that carry out the ball milling stop condition of ball milling to described first ore pulp For particle diameter in described first ore pulp be -400 target minreal contents be 50~60%, described 3rd ore pulp is carried out with the ball milling of ball milling Stop condition is that in described 3rd ore pulp, particle diameter is 50~60% for -400 target minreal contents.
10. method according to claim 9 is it is characterised in that described first to sieve be to be carried out using high frequency fine screen, described Second to sieve be two sections of hydrocyclones using φ 150 and φ 100.
11. methods according to claim 3 are it is characterised in that carry out repeatedly to described first concentrate selected obtaining full sulfur The troilite concentrate of grade >=38%.
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CN106317967B (en) * 2016-08-15 2018-08-17 大连地拓环境科技有限公司 A method of preparing rubber-reinforcing filler using iron tailings
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CN108636591B (en) * 2018-04-16 2020-02-18 辽宁万隆科技研发有限公司长沙分公司 Method for recovering quartz from iron tailings
CN110976077A (en) * 2019-12-25 2020-04-10 中建材蚌埠玻璃工业设计研究院有限公司 Method for preparing high-purity quartz sand iron concentrate from magnetite associated granular quartz
CN111203328A (en) * 2020-01-10 2020-05-29 中国科学院合肥物质科学研究院 Method for purifying quartz sand

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