CN106269290A - The method for floating of decopperized lead zinc from highgrade pyrite concentrate - Google Patents

The method for floating of decopperized lead zinc from highgrade pyrite concentrate Download PDF

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Publication number
CN106269290A
CN106269290A CN201610950595.6A CN201610950595A CN106269290A CN 106269290 A CN106269290 A CN 106269290A CN 201610950595 A CN201610950595 A CN 201610950595A CN 106269290 A CN106269290 A CN 106269290A
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concentrate
lead zinc
pulp
copper
flotation
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CN106269290B (en
Inventor
叶树峰
吕翠翠
钱鹏
陈运法
仉小猛
王永良
楼正洪
严久成
代玉虹
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Beijing Zhongke Jinhan Technology Co ltd
Institute of Process Engineering of CAS
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Beijing Zhongke Jinhan Technology Co ltd
Institute of Process Engineering of CAS
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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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/02Froth-flotation processes
    • 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
    • B03D1/001Flotation agents
    • B03D1/018Mixtures of inorganic and organic compounds
    • 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
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/007Modifying reagents for adjusting pH or conductivity
    • 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
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/02Collectors
    • 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
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/06Depressants
    • 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

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention discloses a kind of method for floating of decopperized lead zinc from highgrade pyrite concentrate.Described highgrade pyrite concentrate obtains through flotation from sulphur iron ore or ore dressing tailings.Size mixing through parlkaline, one roughing, triple cleaning, i.e. can get sulfur grade more than 47%, copper grade less than 0.10%, the lead zinc total grade high-quality iron concentrate less than 0.30%.The copper lead zinc mixing ore concentrate that triple cleaning obtains can make the added value of iron concentrate be greatly improved as the raw material of sorting copper-lead zinc.The iron concentrate roasting direct antacid of the high-quality obtained, the tailings after antacid can use directly as high-quality iron ore concentrate, it is achieved the rationalization of resource and maximally utilizing.

Description

The method for floating of decopperized lead zinc from highgrade pyrite concentrate
Technical field:
The invention belongs to Non-ferrous minerals manufacture field, relate to a kind of decopperized lead zinc floating from highgrade pyrite concentrate Choosing method.
Technical background:
In the raw material of China's acid industry, troilite accounts for 72.8%.Troilite is not only Sulphur ressource, is also important ferrum money Source and the energy.Troilite through floating and enriching, obtain iron concentrate.Iron concentrate grade is 30%-50%, and grade is 38% Above iron concentrate is primes, is considered as highgrade pyrite concentrate.And high-quality iron concentrate refer to sulfur grade more than 47%, copper product The product that position is less than 0.10%, the total grade of lead zinc is less than 0.30%.Iron concentrate oxidizing roasting, sulfur generates SO2For Sulphuric acid, surplus Under slag be the oxidation product Fe of ferrum2O3And Fe3O4, iron-holder is higher, can be used for smelting iron, it is achieved that sulfur and the dual profit of ferrum With.But, although floatation pyrite solves roasting efficiency and the problem of slag Iron grade, but enriching sulfur and iron ore deposit when Often with valuable metal elements such as a small amount of copper-lead zinc.The existence of these metals so that the quality of slag ferrum is relatively low, to refining Ferrum has a negative impact.If selecting these metallic elements before antacid from iron concentrate, not only follow-up ironmaking is produced long-pending Pole acts on, and achieves the synthetical recovery of valuable metal, has the biggest economic benefit, also embodies the rationalization to resource And maximally utilize.
For the problem of the Sulfogen ore impurity-removing (referring to remove the elements such as copper, lead, zinc) of enrichment from ore dressing tailings, some scholars Have studied the removal phenomenon of copper in cyanidation tailings, lead, zinc.The patent of invention of Publication No. CN102505077 describes from cyaniding Tailings reclaims copper and the method for lead and zinc bulk concentrate.The method uses sulphuric acid, butyl xanthate, black powder, diethyldithiocarbamate to carry out flotation, Obtain lead and zinc bulk concentrate.Then in lead zinc bulk flotation mine tailing, add sulphuric acid, butyl xanthate and 2# oil carry out flotation and obtain Copper concentrate.The patent of invention of Publication No. CN102728476A describes the flotation side reclaiming zinc from refined gold ore cyaniding tailings Method.The method sequentially pass through select lead, size mixing, acidic activated, suppress, stir and flotation, finally obtain high-grade zinc concentrate.Public The patent of invention that the number of opening is CN1865461A uses activated carbon, YO medicament to carry out pretreatment, adds YO in the ore pulp handled well Medicament, Calx, butyl xanthate carry out floating selecting square lead ore, are subsequently adding Calx, copper sulfate, butyl xanthate carry out flotation sphalerite. The patent of invention of Publication No. CN1775371A is also first to floatingly select copper/lead/zinc ore, the most again enriching sulfur and iron ore deposit.These method values Must use for reference, but directly from cyanidation tailings, select copper, lead and zinc ores, can affect the overall recovery that iron concentrate is final, and flotation Technique is more complicated, and floating agent kind is more, adds processing cost.
Making a general survey of prior art, the flotation of copper-lead zinc is often for the low-grade iron concentrate of sulfur-bearing 20-30%, due to it Sulfur-bearing is relatively low, and troilite composition is less on the impact of flotation.But, it is high-grade that current most of sulfuric acid plants directly enter purchase Iron concentrate (sulfur-bearing is up to 38~50%), therefore develops the flotation technology for reclaiming copper-lead zinc from highgrade pyrite concentrate and has Important practical significance.The present invention is directed to the iron concentrate of sulfur-bearing 38-50%, it is proposed that the technical side of a kind of efficient flotation separation copper-lead zinc Case: by the basic conditions, add amino phenols inhibitor suppression troilite, then add suitable collecting agent, only need Want one roughing and triple cleaning, just can select copper/lead/zinc ore thing from iron concentrate, flotation cell obtains high-quality iron concentrate Product.The copper/lead/zinc ore thing selected can be as the raw material of enrichment copper-lead zinc.Regime of agent is simple, and flow process is shorter, and processing cost is relatively Low.
Summary of the invention:
The invention provides a kind of method for floating of decopperized lead zinc from highgrade pyrite concentrate.Through adding suitable flotation Medicament, under simple technological process, the iron concentrate obtained is high-quality concentrate product, smelts iron for follow-up antacid and slag and carries Carry out convenience.
The method that the present invention relates to, comprises the following steps:
A., iron concentrate is put into stirring in agitator tank size mixing, by pulp density 40-60%;
B. in agitator tank, pH regulator is added, stirring while adding, make more than pH values of pulp=11.5, be subsequently adding aminobenzene Phenolic inhibitors, is sufficiently stirred for sizing mixing;
C. adding sulfide mineral collector in the ore pulp mixed up, consumption, at 20g/t 60g/t, is sufficiently stirred for, then ore deposit Flotation cell transferred to by slurry, is sufficiently stirred for, opens gas switch and be inflated, and opens scraper plate and is scraped by flotation froth;
D. it is poured into roughly selecting the froth pulp obtained in the flotation cell of primary cleaning, no longer adds any floating agent, It is filled with air after being sufficiently stirred for, and opens scraper plate the foam of primary cleaning is scraped standby.Primary cleaner tailing returns to next Roughly selecting of circulation;
E. the froth pulp of primary cleaning is poured in the flotation cell of recleaning, after stirring of sizing mixing, is filled with air, and Open scraper plate and the foam of recleaning is scraped standby.The mine tailing of recleaning returns in the primary cleaning of subsequent cycle;
F. the froth pulp of recleaning is poured in the flotation cell of triple cleaning, after stirring of sizing mixing, is filled with air, and Open scraper plate to be scraped by the foam of triple cleaning.The mine tailing of triple cleaning returns in the recleaning of subsequent cycle;
G. in the groove roughly selected, mine tailing is through vacuum filter filtration, oven drying, and the product obtained is high-quality sulfur essence Ore deposit;
H. the froth pulp of triple cleaning is through vacuum filter filtration, oven drying, obtains copper lead zinc mixing ore concentrate.
It is an advantage of the current invention that: use simple floating agent and flotation flowsheet, isolate from high-grade iron concentrate Copper lead zinc mixing ore concentrate, has obtained high-quality iron concentrate, and the roasting antacid for iron concentrate provides quality assurance, isolated Copper lead zinc mixing ore concentrate can be as the raw material reclaiming copper-lead zinc, it is achieved that the rationalization of resource and maximally utilizing.
Accompanying drawing illustrates:
Fig. 1 is the process chart of decopperized lead zinc from highgrade pyrite concentrate
Detailed description of the invention:
Embodiment 1
The iron concentrate that certain pyrite flotation obtains, its chemical composition composition is as follows:
Table 1 iron concentrate multielement analysis result (%)
Take the iron concentrate of 500g to put into stirring in agitator tank and size mixing, pulp density is modulated 40%.Then toward in agitator tank Add calcium oxide, stirring while adding, make pH values of pulp=12.80, be subsequently adding para-aminophenol 100g/t, stir 10 minutes.Past The ore pulp mixed up adds diethyldithiocarbamate 40g/t, after stirring 2 minutes, ore pulp is transferred to be inflated in rougher cell.Pass through One thick three essences, obtain the mine tailing in groove and the froth pulp flotated.Mine tailing in groove becomes high-quality through filtration drying Iron concentrate.The froth pulp flotated is copper lead zinc mixing ore concentrate, can be as the raw material of sorting copper-lead zinc.Product quality such as table Shown in 2, in iron concentrate, sulfur-bearing 48.05%, cupric 0.09%, lead zinc total content are 0.19%, meet wanting of high-quality iron concentrate Ask.And copper lead zinc mixing ore concentrate cupric 3.79%, leaded 1.71%, containing zinc 8.50%, be the raw material preferably reclaiming copper-lead zinc.
Table 2 product quality analysis result (%)
Embodiment 2
The iron concentrate of certain pyrite flotation, its chemical composition is as shown in table 3:
Table 3 iron concentrate multielement analysis result (%)
Take the iron concentrate of 500g to put into stirring in agitator tank and size mixing, pulp density is modulated 40%.Then toward in agitator tank Add calcium hydroxide, stirring while adding, make pH values of pulp=11.80, be subsequently adding p-methylaminophenol 100g/t, stir 10 points Clock.In the ore pulp mixed up, add butyl xanthate 60g/t, after stirring 2 minutes, ore pulp is transferred to fill in rougher cell Gas.Froth pulp is hung up in single-minded flotation cell by the scraper plate carried by flotation device, scrapes bubble 3 minutes.Mine tailing in groove passes through Being filtered dry dry becomes high-quality iron concentrate.Product in single-minded flotation cell is carried out again twice selected, final froth pulp is Copper lead zinc mixing ore concentrate.Product quality is as shown in table 4, and in iron concentrate, sulfur-bearing 48.24%, cupric 0.05%, lead zinc total content are 0.12%, meet the requirement of high-quality iron concentrate.And it is copper lead zinc mixing ore concentrate cupric 5.03%, leaded 2.55%, containing zinc 14.72%, it is the raw material preferably reclaiming copper-lead zinc.
Table 4 product quality analysis result (%)
Embodiment 3
The iron concentrate that certain cyanidation tailings flotation obtains, its chemical composition is as shown in table 5:
Table 5 iron concentrate multielement analysis result (%)
Take the iron concentrate of 500g to put into stirring in agitator tank and size mixing, pulp density is modulated 40%.Then toward in agitator tank Add calcium oxide, stirring while adding, make pH values of pulp=12.20, be subsequently adding p-methylaminophenol 100g/t, stir 10 minutes. In the ore pulp mixed up, add second sulfur ammonium ester 48g/t, after stirring 2 minutes, ore pulp is transferred to be inflated in rougher cell. Through thick three essences, obtain the mine tailing in groove and the froth pulp flotated.Mine tailing in groove becomes high-quality through filtration drying The iron concentrate of amount.The froth pulp flotated is copper lead zinc mixing ore concentrate.Product quality is as shown in table 6, sulfur-bearing in iron concentrate 51.34%, cupric 0.07%, lead zinc total content are 0.24%, meet the requirement of high-quality iron concentrate.And copper lead zinc mixing ore concentrate Cupric 6.24%, leaded 2.81%, containing zinc 18.81%, be the raw material preferably reclaiming copper-lead zinc.
Table 6 product quality analysis result (%)
Embodiment 4
The iron concentrate that certain lead zinc tailings flotation obtains, its chemical composition is as follows:
Table 7 iron concentrate multielement analysis result (%)
Take the iron concentrate of 500g to put into stirring in agitator tank and size mixing, pulp density is modulated 60%.Then toward in agitator tank Add calcium oxide, stirring while adding, make pH values of pulp=12.20, be subsequently adding acamol 100g/t, stir 10 points Clock.In the ore pulp mixed up, add butyl ammonium aerofloat 20g/t, after stirring 2 minutes, ore pulp is transferred to fill in rougher cell Gas.Through thick three essences, obtain the mine tailing in groove and the froth pulp flotated.Mine tailing in groove becomes high through filtration drying The iron concentrate of quality.The froth pulp flotated is copper lead zinc mixing ore concentrate.Product quality is as shown in table 8, contains in iron concentrate Sulfur 48.84%, cupric 0.09%, lead zinc total content are 0.26%, meet the requirement of high-quality iron concentrate.And copper-lead zinc mixing essence Ore deposit cupric 4.60%, leaded 2.16%, containing zinc 13.16%, be the raw material preferably reclaiming copper-lead zinc.
Table 8 product quality analysis result (%)
Embodiment 5
The iron concentrate that certain cyanidation tailings flotation obtains, its chemical composition is as shown in table 5 in embodiment 3.
According to the method for patent CN1775371A, by the Concentration Modulation 60% of cyanidation tailings, then add in agitator tank Concentrated sulphuric acid, butyl xanthate, aerofloat 226 and 2# oil carry out flotation remove impurity.After triple cleaning scans closed cycle twice, The concentrate product obtained and product from failing are as shown in table 9.As can be seen from Table 9, after above-mentioned chemicals treatment, the product of iron concentrate Position brings up to 51.74%, but copper-lead zinc also has a small amount of enrichment with the enrichment of troilite, can not remove from iron concentrate. Therefore, the method is not particularly suited for high-grade iron concentrate.
Table 9 product quality analysis result (%)
Embodiment 6
The iron concentrate that certain lead zinc tailings flotation obtains, its chemical composition is as shown in table 7 in embodiment 4.
According to the method for patent CN1865461A, by the Concentration Modulation 35% of cyanidation tailings, then add in agitator tank The medicaments such as activated carbon, ferrous sulfate, ammonium persulfate, Calx, butyl xanthate, after asynchronous mixed choosing, obtain copper-lead zinc mixing essence Ore deposit and iron concentrate, analysis result is as shown in table 10.As can be seen from Table 10, after above-mentioned chemicals treatment, the grade of iron concentrate Bringing up to 47.80%, in iron concentrate, the content of copper-lead zinc decreases.But DeGrain on the whole.
Table 10 product quality analysis result (%)

Claims (5)

1. the method for floating of decopperized lead zinc from highgrade pyrite concentrate, it is characterised in that: use simple floating agent, use letter Single flotation flowsheet, can remove a small amount of copper-lead zinc from high-grade iron concentrate, obtain high-quality iron concentrate;Described Floating agent includes pH regulator, inhibitor and sulfide mineral collector;Described flotation flowsheet comprises the following steps:
A., iron concentrate is put into stirring in agitator tank size mixing, pulp density is adjusted to C=40-60%;
B. in agitator tank, pH regulator is added, stirring while adding, make more than pH values of pulp=11.5, be subsequently adding amino phenols Inhibitor, is sufficiently stirred for sizing mixing;
C. adding sulfide mineral collector in the ore pulp mixed up, consumption at 20g/t 60g/t, is sufficiently stirred for, then ore pulp is turned Move on to flotation cell, be sufficiently stirred for, open gas switch and be inflated, open scraper plate and flotation froth is scraped;
D. it is poured into roughly selecting the froth pulp obtained in the flotation cell of primary cleaning, no longer adds any floating agent, stirring After be filled with air, and open scraper plate the foam of primary cleaning scraped standby.Primary cleaner tailing returns to the thick of subsequent cycle Choose;
E. the froth pulp of primary cleaning is poured in the flotation cell of recleaning, is filled with air after being sufficiently stirred for, and opens The foam of recleaning is scraped standby by scraper plate.The mine tailing of recleaning returns in the primary cleaning of subsequent cycle;
F. the froth pulp of recleaning is poured in the flotation cell of triple cleaning, is filled with air after being sufficiently stirred for, and opens The foam of triple cleaning is scraped by scraper plate.The mine tailing of triple cleaning returns in the recleaning of subsequent cycle;
G. in the groove roughly selected, mine tailing is through vacuum filter filtration, oven drying, and the product obtained is high-quality iron concentrate;
H. the froth pulp of triple cleaning is through vacuum filter filtration, oven drying, obtains copper lead zinc mixing ore concentrate.
2. according to the pH regulator described in claim 1 be calcium oxide, calcium hydroxide, sodium hydroxide, potassium hydroxide and its In the most several arbitrary proportion combinations.
3. according to the phenol Organic substance that amino phenols inhibitor is band amino described in claim 1.
4. it is diethyldithiocarbamate, second thiamine ester, butylamine black powder, butyl xanthate collecting agent according to the collecting agent described in claim 1.
5., according to the floating operation flow process described in claim 1, need by actual production index, its floatation process concentration times More than 3 times, scan number of times more than 0 time.
CN201610950595.6A 2016-10-26 2016-10-26 The method for floating of decopperized lead zinc from highgrade pyrite concentrate Expired - Fee Related CN106269290B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107855223A (en) * 2017-11-07 2018-03-30 西部矿业股份有限公司 A kind of beneficiation method that zinc mineral is reclaimed from the iron concentrate containing low grade zinc
CN111167613A (en) * 2020-01-02 2020-05-19 湖南工程学院 Method for comprehensively recovering lead and zinc from sulfur concentrate after lead and zinc separation
CN111530622A (en) * 2020-05-08 2020-08-14 江西理工大学 Method for removing impurities from high-grade sulfur concentrate
CN111871617A (en) * 2020-07-17 2020-11-03 广东省大宝山矿业有限公司 Sorting method for removing zinc from sulfur concentrate and recycling zinc resource

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107855223A (en) * 2017-11-07 2018-03-30 西部矿业股份有限公司 A kind of beneficiation method that zinc mineral is reclaimed from the iron concentrate containing low grade zinc
CN111167613A (en) * 2020-01-02 2020-05-19 湖南工程学院 Method for comprehensively recovering lead and zinc from sulfur concentrate after lead and zinc separation
CN111530622A (en) * 2020-05-08 2020-08-14 江西理工大学 Method for removing impurities from high-grade sulfur concentrate
CN111530622B (en) * 2020-05-08 2022-03-22 江西理工大学 Method for removing impurities from high-grade sulfur concentrate
CN111871617A (en) * 2020-07-17 2020-11-03 广东省大宝山矿业有限公司 Sorting method for removing zinc from sulfur concentrate and recycling zinc resource

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