CN106734062A - It is a kind of iron vitriol slag is solidified after for the method for filling mine - Google Patents

It is a kind of iron vitriol slag is solidified after for the method for filling mine Download PDF

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Publication number
CN106734062A
CN106734062A CN201611073089.XA CN201611073089A CN106734062A CN 106734062 A CN106734062 A CN 106734062A CN 201611073089 A CN201611073089 A CN 201611073089A CN 106734062 A CN106734062 A CN 106734062A
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CN
China
Prior art keywords
iron vitriol
vitriol slag
slag
iron
filling
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Pending
Application number
CN201611073089.XA
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Chinese (zh)
Inventor
杨志强
刘玉强
李娟�
李维舟
田忠元
魏睿
张鹏
卢苏君
赵秀丽
张妮
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Jinchuan Group Co Ltd
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Jinchuan Group Co Ltd
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Priority to CN201611073089.XA priority Critical patent/CN106734062A/en
Publication of CN106734062A publication Critical patent/CN106734062A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20Agglomeration, binding or encapsulation of solid waste
    • B09B3/25Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B1/00Dumping solid waste

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses the process after a kind of solidification of iron vitriol slag for filling in mine.The method is, by two sections of washings of iron vitriol slag, to wash rear liquid and return to former nickel processing system industrial water, washes rear slag and is dispersed in water, add quick lime, PFS, hydrogen peroxide oxidation is used after being sufficiently stirred for, the solidification of the additives such as cement, PAM is finally allocated into, for replacing part filling in mine aggregate.This method greatly reduces filling in mine cost, solves the long-term of iron vitriol slag and stores up problem, cost-effectively realizes the secondary utilization of iron vitriol slag.By detection, the leaching characteristic of heavy metal complies fully with country in the firming body sample for obtaining《Hazard waste landfill Environmental capacity standard》.

Description

It is a kind of iron vitriol slag is solidified after for the method for filling mine
Technical field
The present invention relates to the innoxious process for treating field of solid kind discarded object, relate in particular to one kind and consolidate iron vitriol slag The method for being used to fill mine after change.
Background technology
The main purification method of iron is yellow modumite method in nickel cobalt wet smelting process, and the method is although simple to operate, examination Agent consumption is few, low production cost, but there is the shortcomings of quantity of slag is big, iron vitriol slag stability is poor, heap sustainability is bad.General smeltery is equal Slag can be selected to build nearby to store up the iron vitriol slag that yellow modumite method is produced, the land resource of preciousness, Er Qietie is not only taken Heavy metal in alum slag, such as Ni, Zn, Cu, Pb, As, under the conditions of storing up naturally can continuous dissolution so as to polluted underground water and Soil, causes environmental pollution.The innoxious technique for fixing of current iron vitriol slag has high temperature sintering, reduction roasting-magnetic separation, extraction Deng, but because operation cost is high, cannot popularize application in an all-round way.
The content of the invention
The technical problems to be solved by the invention are directed to shortcoming of the prior art and provide one kind and solidify iron vitriol slag Afterwards be used for fill mine method, this method reduce the cost of filling in mine, and avoid the heavy metal in iron vitriol slag due to The long-term pollution stored up to natural conditions, for the treatment of iron vitriol slag provides a kind of new direction.
Adopted the following technical scheme that to solve technical problem of the invention:
It is a kind of iron vitriol slag is solidified after for the method for filling mine, comprise the following steps that:
(1)Iron vitriol slag is washed, wherein liquid-solid ratio is 2-3:1, washed-residue is obtained after agitator treating 20-30min, wash rear liquid and return to original Nickel processing system industrial water;
(2)Solidification:Step(1)The washed-residue of gained adds water, and polyaluminum sulfate is added after adding quick lime calcification 10-15min Iron PFS is sufficiently stirred for adding hydrogen peroxide, cement, waterglass and the polyacrylamide PAM that mass fraction is 30 % after 5-10min Mix 10-20min in trommel mixer, mixing makes iron vitriol slag condense integral Binder Materials, overall Binder Materials 21-28 days Compression strength reaches 11Mp, and wherein washed-residue is with the mass ratio of each additive, washed-residue:Quick lime:Bodied ferric sulfate:Dioxygen Water:Cement:Waterglass=3-2.5:1-2:0.25-0.3:0.15-0.2:3-3.5:0.23-0.3;Polyacrylamide PAM with wash The mass ratio for washing slag is 0.00015:1;
(3)Filling:By step(2)The outdoor maintenance of firming body of gained, temperature is 25-30 DEG C, and 10- is crushed to after 21-28 days 12mm is used for filling in mine.
The iron vitriol slag is iron content to be removed produced by iron using yellow modumite method in nickel, the cobalt wet smelting process of 20-25% Iron vitriol slag.
The step(1)The washing of middle iron vitriol slag uses two sections of countercurrent washings, and two sections of wash waters return to first wash.
Step 2 reclaimed water, washed-residue, cement, bodied ferric sulfate, hydrogen peroxide, waterglass, the various additions of polyacrylamide Ratio of mud when agent is mixing cured in trommel mixer is 0.45-0.50.
The present invention will remove iron vitriol slag produced by iron in nickel, the cobalt wet smelting process of iron content 20-25% using yellow modumite method After washing, the washed-residue of gained adds a small amount of quick lime and makees activator, and PFS absorption adds hydrogen peroxide oxidation after being sufficiently stirred for, then With cement and other additives(Adding ingredient proportioning is shown in Table 1)Mixing makes iron vitriol slag be condensed into the entirety of compression strength intensity 11Mp Binder Materials.By being crushed to 10-12mm after the outdoor maintenance in 28 days cycles, filling in mine, obturation 28 to be used for instead of aggregate Its compression strength >=5Mpa, meets the requirement of mine filler.
Table 2 prepares overall Binder Materials iron vitriol slag and solidifies each dispensing proportioning
Washed-residue Lime PFS H2O2(30%) Cement Waterglass PAM The ratio of mud
3-2.5 1-2 0.25-0.3 0.15-0.2 3-3.5 0.23-1 0.15g/(Kg washed-residues) 0.45-5.0
After reaction terminates, toxicity characteristic leaching procedure is carried out to solidification Binder Materials, according to《Leaching toxicity from solid waste method:Sulfuric acid Nitrate method》(HJ/T299-2007), are detected, each poisonous and harmful element content in leachate using atomic fluorescence spectrum Meet country《Hazard waste landfill Environmental capacity standard》(GB18598-2001), can reach hazardous waste security landfill people The limit value that standard specifies.
From technical scheme disclosed above, the method for the present invention is simple to operate, can make the iron containing various heavy Alum slag safe and convenient ground is used for filling in mine, has both solved the problems, such as that slag was stored up, also for melting waste slag treatment provides a kind of new Technology path, with universal society generalization meaning.
Brief description of the drawings
Fig. 1 is present invention process flow chart.
Specific embodiment
Embodiment 1
It is a kind of iron vitriol slag is solidified after for the method for filling mine, comprise the following steps that:Take what certain nickel factory slag head stored up the phase Iron vitriol slag 300g, containing Ni 3.430%, Co 0.030%, Cu 2.040%, Fe 20.820%, As 2.1%, at normal temperatures, liquid-solid ratio 2:Agitator treating 20min under the conditions of 1, washery slag contains Ni 0.41%, Co 0.007%, Cu 1.64%, Fe 26.50%, As 2.44%, Rear liquid 13.07g/L containing Ni is washed, former nickel processing system industrial water is returned.Overall Binder Materials is prepared, the siderotil after washing is taken Slag 60g, is dispersed in 76mL water(The ratio of mud 0.5), after adding 20g quick lime calcifications 10min, add 5g PFS to be sufficiently stirred for The hydrogen peroxide that 3g mass fractions are 30%, 60g cement, 0.009g PAM, 4.6g waterglass is added to stir laggard after 5min Row discharging molding, outdoor maintenance 28 days, compression strength 11Mpa after the demoulding, overall Binder Materials is crushed to 12mm and carries out mine fills Fill out, 28 days compression strength of obturation meets the strength criterion >=5Mpa required by filling in mine.
Solidification slag 50g is taken, below 5mm, liquid-solid ratio 10 is crushed to:1 carries out water logging, and the holding level on the oscillator that leaches is shaken Swing 18h, vibration rotating speed 100r/min.1.45mg/L containing Ni in leachate, Co 0.02mg/L, Cu 0.92mg/L, Fe 16.12mg/L, Pb<0.1 mg/L, As<The various poisonous and harmful element contents of 0.5mg/L are far below national standard.
Embodiment 2
It is a kind of iron vitriol slag is solidified after for the method for filling mine, comprise the following steps that:Treatment contains Ni 2.320, Co 0.006th, certain nickel factory of Cu 1.400, Fe 23.780, As 1.65 normally produce the iron vitriol slag 300g of output, at normal temperatures, liquid Admittedly than 2:Agitator treating 30min under the conditions of 1, washery slag contains Ni 0.25%, Co 0.003%, Cu 1.05%, Fe 25.98%, As 0.4%.Wash water 10.24g/L containing Ni.Overall Binder Materials is prepared, the iron vitriol slag 60g after washing is taken, is dispersed in 76mL water(Water Gray scale 0.5), after adding 20g quick lime calcifications 15min, addition 3g mass fractions are 30% after adding 5g PFS to be sufficiently stirred for 5min Hydrogen peroxide, 25g cement 60g, 0.01g PAM, 4.6g waterglass carries out discharging molding after stirring, outdoor after the demoulding to support Shield 28 days, compression strength 11.25Mpa, overall Binder Materials is crushed to 10mm and carries out filling in mine, 28 days compression strength of obturation Meet the strength criterion >=5Mpa required by filling in mine.
Solidification slag is tested by water logging, 0.22mg/L containing Ni in leachate, Co 0.03mg/L, Cu 1.20mg/L, Fe 16.66mg/L, Pb<0.1 mg/L, As<0.5mg/L, meets national standard.
Embodiment 3
It is a kind of iron vitriol slag is solidified after for the method for filling mine, comprise the following steps that:Treatment contains Ni 2.320, Co 0.006th, certain nickel factory of Cu 1.400, Fe 23.780, As 1.65 normally produce the iron vitriol slag 50kg of output, at normal temperatures, liquid Admittedly than 3:Agitator treating 30min under the conditions of 1, slag contains Ni 0.40%, Co 0.003%, Cu 1.09%, Fe 25.78%, As 0.4%. Wash water 10.68g/L containing Ni.Overall Binder Materials is prepared, the iron vitriol slag 25.0kg after washing is taken, 38.1L is dispersed in(The ratio of mud 0.45)In water, after adding 20kg quick lime calcifications 12min, 3.0kg PFS are added to add 2.0kg mass after being sufficiently stirred for 10min Fraction is 30% hydrogen peroxide, and 35kg cement, 4.2g PAM, 10kg waterglass carries out discharging molding, after the demoulding after stirring Outdoor maintenance 28 days, compression strength 11.15Mpa, overall Binder Materials is crushed to 12mm and carries out filling in mine, and obturation resists for 28 days Compressive Strength meets the strength criterion >=5Mpa required by filling in mine.Solidification slag is tested by water logging, and Ni is contained in leachate 0.053mg/L, Co are not detected, Cu 0.048mg/L, Fe 0.11mg/L, Pb<0.1 mg/L, As<0.5mg/L, meets country Standard.

Claims (4)

1. it is a kind of iron vitriol slag is solidified after for the method for filling mine, it is characterised in that comprise the following steps that:
(1)Iron vitriol slag is washed, wherein liquid-solid ratio is 2-3:1, washed-residue is obtained after agitator treating 20-30min, wash rear liquid and return to original Nickel processing system industrial water;
(2)Solidification:Step(1)The washed-residue of gained adds water, and polyaluminum sulfate is added after adding quick lime calcification 10-15min Iron PFS is sufficiently stirred for adding hydrogen peroxide, cement, waterglass and the polyacrylamide PAM that mass fraction is 30 % after 5-10min Mix 10-20min in trommel mixer, mixing makes iron vitriol slag condense integral Binder Materials, overall Binder Materials 21-28 days Compression strength reaches 11Mp, and wherein washed-residue is with the mass ratio of each additive, washed-residue:Quick lime:Bodied ferric sulfate:Dioxygen Water:Cement:Waterglass=3-2.5:1-2:0.25-0.3:0.15-0.2:3-3.5:0.23-0.3;Polyacrylamide PAM with wash The mass ratio for washing slag is 0.00015:1;
(3)Filling:By step(2)The outdoor maintenance of firming body of gained, temperature is 25-30 DEG C, and 10- is crushed to after 21-28 days 12mm is used for filling in mine.
2. it is according to claim 1 it is a kind of by iron vitriol slag solidify process, it is characterised in that:The iron vitriol slag be containing Iron removes iron vitriol slag produced by iron to use yellow modumite method in nickel, the cobalt wet smelting process of 20-25%.
3. it is according to claim 1 and 2 it is a kind of by iron vitriol slag solidify process, it is characterised in that:The step(1) The washing of middle iron vitriol slag uses two sections of countercurrent washings, and two sections of wash waters return to first wash.
4. it is according to claim 1 and 2 it is a kind of by iron vitriol slag solidify process, it is characterised in that:In the step 2 Water, washed-residue, cement, bodied ferric sulfate, hydrogen peroxide, waterglass, polyacrylamide various additives are mixed in trommel mixer Ratio of mud when closing solidification is 0.45-0.50.
CN201611073089.XA 2016-11-29 2016-11-29 It is a kind of iron vitriol slag is solidified after for the method for filling mine Pending CN106734062A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111069232A (en) * 2019-12-10 2020-04-28 赤峰中色锌业有限公司 Method for washing and recovering zinc from zinc hydrometallurgy jarosite slag and innocent treatment of recovered slag
CN112458290A (en) * 2020-11-06 2021-03-09 金川集团股份有限公司 Harmless treatment method for solid waste of nickel-containing iron slag
CN113185256A (en) * 2021-03-30 2021-07-30 中国十七冶集团有限公司 Performance-controllable cement composite slurry and preparation method thereof

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CN203728902U (en) * 2014-03-13 2014-07-23 北京事竟成有色金属研究所 Integrated solid waste gas ash and zinc-containing ferrovanadium slag recovery device
CN105060758A (en) * 2015-08-26 2015-11-18 西南科技大学 Method for preparing alkali-slag cement retarder through jarosite slag

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CN203728902U (en) * 2014-03-13 2014-07-23 北京事竟成有色金属研究所 Integrated solid waste gas ash and zinc-containing ferrovanadium slag recovery device
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111069232A (en) * 2019-12-10 2020-04-28 赤峰中色锌业有限公司 Method for washing and recovering zinc from zinc hydrometallurgy jarosite slag and innocent treatment of recovered slag
CN112458290A (en) * 2020-11-06 2021-03-09 金川集团股份有限公司 Harmless treatment method for solid waste of nickel-containing iron slag
CN113185256A (en) * 2021-03-30 2021-07-30 中国十七冶集团有限公司 Performance-controllable cement composite slurry and preparation method thereof

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