CN100395034C - Method for reclaiming valuable mineral from concentrated tailings of stannum-contained multi-metal sulphide ore - Google Patents
Method for reclaiming valuable mineral from concentrated tailings of stannum-contained multi-metal sulphide ore Download PDFInfo
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 56
- 239000011707 mineral Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910052976 metal sulfide Inorganic materials 0.000 title claims abstract description 16
- 239000012141 concentrate Substances 0.000 claims abstract description 67
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 56
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 55
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 54
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005188 flotation Methods 0.000 claims abstract description 34
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 33
- 239000005864 Sulphur Substances 0.000 claims abstract description 30
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 19
- 239000011701 zinc Substances 0.000 claims abstract description 19
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 12
- 239000004088 foaming agent Substances 0.000 claims description 12
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 10
- 229910001656 zinc mineral Inorganic materials 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 8
- 239000004571 lime Substances 0.000 claims description 8
- 238000004094 preconcentration Methods 0.000 claims description 8
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 5
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- 229940116901 diethyldithiocarbamate Drugs 0.000 claims description 4
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000012991 xanthate Substances 0.000 claims description 4
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 4
- 229960001763 zinc sulfate Drugs 0.000 claims description 4
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 3
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 28
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000003814 drug Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000010327 methods by industry Methods 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 26
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 13
- 241000196324 Embryophyta Species 0.000 description 9
- 230000005484 gravity Effects 0.000 description 9
- 239000012190 activator Substances 0.000 description 8
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 235000019082 Osmanthus Nutrition 0.000 description 2
- 241000333181 Osmanthus Species 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000002079 cooperative effect Effects 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical group [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001070941 Castanea Species 0.000 description 1
- 235000014036 Castanea Nutrition 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- LAISNASYKAIAIK-UHFFFAOYSA-N [S].[As] Chemical compound [S].[As] LAISNASYKAIAIK-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910052973 jamesonite Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007320 rich medium Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- ZVCDLGYNFYZZOK-UHFFFAOYSA-M sodium cyanate Chemical compound [Na]OC#N ZVCDLGYNFYZZOK-UHFFFAOYSA-M 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
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Abstract
The present invention relates to a method for recovering valuable minerals of stannum, lead antimony, zinc, sulphur and arsenic from mill tailings of stanniferous multi-metal sulphide ore, which belongs to the technical field of mineral process engineering. The combined action of various force fields such as a moving sieve jig, an ion spiral chute, a rocking bed, etc. is used on a device in view of the characteristic that raw material tailings are stanniferous multiple metal; a method that a combination medicament is used for generating a synergistic effect in flotation separation is adopted; the valuable minerals in the mill tailings of the stanniferous multi-metal sulphide ore are generally and comprehensively recovered to obtain high-grade ore concentrate of the stannum, the lead antimony, the zinc, the sulphur and the arsenic; compared with the single recovery of the stannum or the stannum and arsenic minerals, the present invention has good economic benefit. The tailings can be used for earth backing afforestation after storage yard treatment, and the tailings can be used as a water reservoir of agricultural water after reservoir treatment; the present invention eliminates hidden dangers of the tailings on environmental pollution and is an environmental-friendly project.
Description
One, technical field:
The present invention relates to a kind of method that from the stannum-contained multi-metal sulphide ore milltailings, reclaims tin, plumbous antimony, zinc, sulphur, arsenic.Belong to the Mineral Processing Engineering field.
Two, background technology:
China is one of abundant country of tin resource, cassiterite polymetallic sulphide ore is in the explored tin ore reserves of China, the cassiterite polymetallic sulphide ore bed occupies significant proportion, and the long slope of mineral bureau of big factory of China Hua Xi group selects factory, Barry to select factory, Che He ore dressing plant, Guangxi chestnut tin ore, the big village of cloud tin to select factory sulphide ore workshop, tin ore ore dressing plant, Yunlong, fragrant flower mountain range tin ore, Sichuan Cha He tin ore to select factory etc.; The Hui Erjian ore dressing plant that Britain is abroad arranged; The refreshing sub-cigarette ore dressing plant of Japan; The He Lusitaliningsike selecting and purchasing company 1 of the former Soviet Union
#Select factory; The equal Er Kuili ore dressing plant of Bolivia; This selects factory etc. all to belong to cassiterite polymetallic sulphide ore and selects factory in the Malay Bart.The tin-polymetallic sulfuration ore dressing plant of China produces in decades, and storing up mine tailing altogether according to the brainstrust measuring and calculating has about 7,000 ten thousand tons.Guangxi Da Chang stores up about 3,000 ten thousand tons of mine tailing, wherein stanniferous 0.45%～0.57%, contain Pb0.22%～0.28%, Sb0.15%～0.21%, contain Zn2.40%～3.27%, S5.7%～9.35%, As0.87%～1.24%, the test explanation can be reclaimed grade from this mine tailing be 16.61 ten thousand tons～21.03 ten thousand tons in 43.56% tin concentrate; The Pb+Sb concentrate grade is 9.89 ten thousand tons～16.15 ten thousand tons of 50.52% lead-antimony concentrates; Grade is 103.6 ten thousand tons～130.6 ten thousand tons of 50.27% zinc concentrates; Grade is 36.17% sulphur concentrate 246.07～419.28 ten thousand ton; Grade is 41.25 ten thousand tons～58.49 ten thousand tons of 35.38% arsenic concentrates, is worth last 10,000,000,000 yuan.Therefore the recovery to the stannum-contained multi-metal sulphide ore milltailings not only has good economic benefits, also is to have very great environmental benefit simultaneously.
Known, domesticly once studied in smeltery, flat osmanthus, Guangxi aspect the recovery of stannum-contained multi-metal sulphide ore milltailings, the comprehensive recovery test of many metals of cassiterite sulphide ore cleaner tailings, and adopt the production of weight-floating-weight process tissue according to the experimental study situation.Earlier with gravity treatment with cassiterite with the arsenic enrichment, the output bulk concentrate abandons a large amount of mine tailings, selects arsenic concentrate with floatation then, flotation tailing is selected tin concentrate and rich medium tin ore with gravity separation method again.Obtaining the tin grade is 34.5%, and the rate of recovery is that 35.32% tin concentrate and tin grade are 2.60%, and the rate of recovery is that 15.60% medium tin ore and arsenic grade are 28%, and the rate of recovery is 65% arsenic concentrate.
The Yang Qi people of state, Dali mining and metallurgy developmental research institute write articles and have introduced Yunlong tin ore mine tailing recycling production practices.Report that the ore that handle in former 100t/d ore dressing plant is cassiterite-quartz vein sulphide ore, gangue is mainly quartz, feldspar, and harmful substance is pyrite, magnetic iron ore, mispickel, raw ore stanniferous 1.5%-1.7%, tin rate of recovery 71-73%, mine tailing stanniferous 0.45%.For making full use of the mine tailing resource, done the spoil reclaming test, adopt gravity treatment-flotation flowsheet to reclaim tin, day handles and expands as 200t/d by 100t/d, earlier abandon mine tailing with gravity treatment, and tin and sulfide enrichment in the gravity treatment rough concentrate, select the tin concentrate with the flotation sulphur removal again.
The comprehensive recovery of these cassiterite polymetallic sulphide ore milltailings mainly is the tin that reclaims in the mine tailing, and selected workshop, mineral bureau smeltery, flat osmanthus and Yunlong tin ore difference, be the arsenic that reclaim in the mine tailing on the basis of reclaiming tin more, pyrite, magnetic iron ore, zincblende, chalcopyrite and a spot of jamesonite that wherein contains do not reclaimed the comprehensive utilization of the cassiterite sulfide ore tailings of therefore can not saying so; Yunlong tin ore mine tailing is recycled, and has only considered the recovery of tin in the mine tailing, and the arsenic higher to content in the mine tailing (0.1%), sulphur (1.88%) all are to remove when harmful impurity; And stanniferous 0.49% in the tailing, sulfur-bearing 4.36% contains arsenic 0.147%, sorts stanniferous 15.703% in the back gravity treatment rough concentrate, and sulfur-bearing 36.22% contains arsenic 1.1813%.Gravity treatment-flotation open circuit flow test shows, tin concentrate stanniferous 61.88%, and sulfur-bearing 0.51% contains arsenic 0.138%; Sulphur concentrate grade 47.48%, stanniferous 0.233% contains arsenic 4.63%, because arsenic is a lot of above national standard in the sulphur concentrate, also untapped so far utilization.It is only to have reclaimed the tin in the mine tailing that Yunlong tin ore mine tailing is recycled, and sulphur, arsenic are all recycled, so can not cry the comprehensive utilization of cassiterite sulphide ore milltailings, can only cry to select from the cassiterite sulphide ore and reclaim cassiterite the tailing.
Three, summary of the invention
The purpose of this invention is to provide a kind of method that from the stannum-contained multi-metal sulphide ore milltailings, reclaims valuable minerals such as tin, plumbous antimony, zinc, sulphur, arsenic.On equipment, adopt the synergy of the multiple field of force at raw material mine tailing characteristic, in flotation, adopt combination medicament to produce the method for cooperative effect, comprehensively reclaim valuable mineral in the stannum-contained multi-metal sulphide ore milltailings, comprise metalliferous mineral tin, plumbous antimony, zinc, mineral such as the sulphur in the nonmetallic mineral, arsenic.
The present invention finishes according to the following steps:
1, with raw material (stannum-contained multi-metal sulphide ore milltailings) tailings discarding by preconcentration, low at valuable content in the raw material, in order to reduce beneficiation cost, improve the selected grade that contains tailing, adopt the method for classification tailings discarding by preconcentration, the mine tailing of right-3mm+0.45mm adopts the vibro-assisted jigging tailings discarding by preconcentration; For adopting into the spiral chute tailings discarding by preconcentration less than the mine tailing of 0.45mm, can abandon the mine tailing that productive rate is 45%-50%, improved selected grade, the selected raw material granularity of throwing behind the tail is all gone into the ball mill ore grinding for-3+0mm;
2, according to selected raw material granularity analytical test explanation, mine tailing is greater than 425 μ m with less than two grain size content height of 40 μ m, both sums are 58.27%, illustrated thick or mistake fine fraction productive rate height, that is to say that the grain size content that is fit to the flotation ore deposit is few, therefore adopt the method for selective milling to realize, the coarse fraction mine tailing is realized tin, plumbous antimony, zinc, sulphur, arsenic monomer dissociation by ore grinding, and the valuable mineral of monomer dissociation reduced pulverizing as far as possible.The concrete practice is, take tcrude ore stanniferous, leaded antimony, contain the many nuggets of zinc, sulfur-bearing arsenic mineral, and the lump ore of main gangue mineral, be processed into test specimen, measure each test specimen compression strength, mechanics parameters such as the Young amount of touching, and then calculate with the method for statistical mechanics, grind this ore required suitable sphere diameter and proportioning, make ore under the effect of ball, make valuable mineral and gangue mineral from cleavage between contact interface, dissociate.Because contact-making surface also is the weakest link of mechanical property between mineral, effectively improve the liberation degree of minerals of tin, plumbous antimony, zinc, sulphur, arsenic mineral, obtain the ore pulp that grinding particle size-200 order accounts for 95%-98%;
3,-200 orders account for the ore pulp of 95%-98%, enter flotation, adding 2: 1 sodium carbonate of weight ratio and lime adjustment slurry pH is 10-12, stirred 3-5 minute, the inhibitor zinc sulfate 400g/t-600g/t that adds zinc mineral again, potassium cyanide 100g/t-200g/t, clorox 100g/t-200g/t stirred 3-5 minute, added the collecting agent 25# black powder 100g/t-250g/t of plumbous antimony mineral, diethyldithiocarbamate 80g/t-180g/t, stirred 3-5 minute, and added No. 2 oil again and make foaming agent 20g/t-50g/t, stir and open charging valve after 3-5 minute, drew together bubble 7-10 minute, can obtain plumbous antimony grade is the plumbous antimony rough concentrate of 10-15%.Rough concentrate adopts table concentration, and condition is shaking table stroke 1-2cm, and it is lead-antimony concentrate and No. 1 mine tailing more than 50% that jig frequency obtains grade for 380-400 time/minute, and the rate of recovery is 44%-52%;
4, No. 1 mine tailing ore pulp of flotation reclaims zinc mineral, add 2: 1 sodium carbonate of weight ratio and lime earlier and adjust pH values of pulp=10-11, add copper sulphate again and make the activator of zinc mineral, consumption 300g/t-500g/t, stirred 3-5 minute, add 1: 1 calcium hypochlorite of weight ratio and sodium humate 150-350g/t again, suppress sulphur arsenic and gangue mineral, stir after 3 minutes, add collecting agent and defend basic xanthate 50g/t-100g/t and Z-200 30g/t-50g/t, stir No. 2 oily 30g/t-40g/t of adding foaming agent after 3-5 minute, stir after 3-5 minute, open charging valve, drew together bubble 5-7 minute, through selected, obtaining grade is 45%-50%, and the rate of recovery is 50%-55% zinc concentrate and No. 2 mine tailings;
5, reclaim the sulphur concentrate from No. 2 mine tailing flotation of ore pulp, the copper sulphate for activation troilite that at first adds 300g/t-600g/t, stirred 3-5 minute, add potassium bichromate 350g/t-500g/t and suppress arsenic mineral, stirred 3-5 minute, adding ethyl xanthate 50g/t-80g/t makes the collecting agent of sulfur mineral, stirred 3-5 minute, add No. 2 oily 10g/t-20g/t of foaming agent, stir and open charging valve after 3-5 minute, drew together bubble 5-7 minute, get the troilite rough concentrate, through selected, obtaining grade is 35-38%, rate of recovery 50-58% sulphur concentrate and No. 3 mine tailings;
6, reclaim arsenic mineral from No. 3 mine tailing flotation of ore pulp, the activator copper sulphate 200g/t-400g/t that at first adds arsenic mineral, stirred 3-5 minute, add collecting agent ethyl xanthate 100g/t-200g/t again, stir and open charging valve flotation arsenic mineral after 3-5 minute, get the arsenic rough concentrate, use shaking table at stroke 1.1cm-2cm again, selected under the condition that jig frequency is 380 times/minute-420 times/minute, obtaining grade is 36%-38%, the arsenic concentrate of rate of recovery 55%-60% and No. 4 mine tailings, its effect is better than single floatation and selects arsenic;
7, No. 4 mine tailing ore pulps adopt table concentration tin, shaking table is the sludge bed of graded shot, and the condition of separation by shaking table is stroke 1-1.5cm, jig frequency 380 times/minute-420 times/minute, adopting the flow process of a thick essence to obtain grade is 43%-48%, and the rate of recovery is 50-60% tin concentrate and chats.
Can also be 60-66% with grade, contain SiO
212% tin concentrate, after adopting sodium carbonate 5%-10wt% concentration to handle drying, be divided into-the 150+200 order ,-200 orders+300 orders ,-300 orders+400 orders, the several grade electrodressings of-400 orders, the electric separation condition is-150+200 order drum electrostatic separator, voltage 40kv, 380 rev/mins of drum barrel rotating speeds, 150-180 ℃ of ore temperature;-200+300 order ,-300+400 order ,-400 order grade tin ores be with the suspension electrostatic separator (patent No.: ZL94200555.4), controlled condition: voltage 80KV---100KV, corona electrode radical 3-5 root, 150-190 ℃ of ore temperature, the blower motor rotating speed can obtain grade 70%-73.5% for 500 rev/mins-800 rev/mins, rate of recovery 70%-75% contains SiO
21.0%-1.7% height tin concentrate, reaching grade is 60%-64%, the rate of recovery is a 25%-30% tin concentrate 2.
8, compare advantage and the good effect that the present invention has with known technology.
(1) the present invention adopts the symphyogenetic equipment in the multiple field of force on equipment, is the important support point of realizing this method as vibro-assisted jigging, ion spiral chute, shaking table etc., and new sophisticated equipment has brought good separating effect.
(2) the present invention is in flotation, and the method that has adopted combination medicament to produce cooperative effect is to realize that this invents another important strong point.
(3) this method is compared with known technology, be more comprehensively to have reclaimed valuable mineral in the cassiterite polymetallic sulphide ore, comprise metalliferous mineral tin, plumbous antimony, zinc, sulphur in the nonmetallic mineral, arsenic mineral, than single recovery tin, or tin compares with arsenic mineral wherein, can be described as to reach the comprehensive valuable mineral that reclaims from the milltailings of cassiterite polymetallic ore deposit substantially.Has good economic benefits.
(4) after the mine tailing stockyard of comprehensively reclaiming the valuable mineral in the mine tailing is administered, can earth backing afforestation; The agricultural water reservoir can be made after administering in the mine tailing storehouse, eliminates the hidden danger of mine tailing environmental pollution, is an environmental friendliness project.
Four, description of drawings
Fig. 1 is a process chart of the present invention
Five, the specific embodiment
Embodiment 1: raw material is mineral bureau of a big factory plant tailing, and its composition weight percentage is tin 0.3%-0.57%, plumbous 0.27%-0.4%, antimony 0.15%-0.21%, zinc 2.44%-3.27%, sulphur 5.7%-9.53%, arsenic 0.87%-1.24%;
With raw material with sieve be divided into-3+0.45mm and-two grades of 0.45mm,-3+0.45mm throws tail with the movable-sieve jig sorting,-0.45mm throws tail with the spiral chute sorting, can abandon productive rate and be 46.66% mine tailing, improved selected grade, the rough concentrate granularity of throwing behind the tail is all gone into the ball mill ore grinding for-3+0mm, grinding particle size-200 order reaches at 96.5% o'clock and enters plumbous antimony floatation process, during with sodium carbonate and 2: 1 consumption accent of lime ore pulp PH=11, add zinc sulfate 450g/t, potassium cyanide 120g/t, inferior Zassol 150g/t suppresses zinc mineral, add 25# black powder 120g/t again, diethyldithiocarbamate 100g/t makes the collecting agent of plumbous antimony, adds No. 2 oily 40g/t of foaming agent, flotation of lead antimony, (stirring 3-5 minute after each dosing), obtaining plumbous antimony grade is 12.65% rough concentrate, is 1.2cm with stroke again, the separation by shaking table of 400 times/minute conditions of jig frequency, obtaining plumbous antimony grade is 48.53%, the lead-antimony concentrate of the Pb rate of recovery 46.17% and No. 1 mine tailing;
No. 1 mine tailing reclaims zinc mineral: add sodium carbonate and lime (2: 1) earlier and transfer pH values of pulp=10.5, add CuSO
4Make the activator 400g/t of zinc mineral, add clorox and sodium humate (1: 1) 200g/t again, suppress sulphur, arsenic mineral, add and add No. 2 oily 30g/t flotation of foaming agent after collecting agent is defended basic xanthate 80g/t, Z-200 40g/t, (stirring 3-5 minute after each dosing), the selected secondary of rough concentrate, obtaining grade is 45.96%, the rate of recovery 52.00% zinc concentrate and No. 2 mine tailings;
The sulphur concentrate is regained in No. 2 mine tailing flotation: add 450g/t activator copper sulphate earlier in No. 2 mine tailing slurries, the activation troilite, add potassium bichromate 400g/t and suppress arsenic mineral, add ethyl xanthate 60g/t collecting sulfur mineral again, add the floating sulphur of No. 2 oily 20g/t of foaming agent again, (stirring 3-5 minute after each dosing) adopts one thick one smart flow process to obtain grade 36.89%, and the rate of recovery is 54.10% sulphur concentrate and No. 3 mine tailings;
No. 3 mine tailing reclaims arsenic mineral: adopt flotation---and the gravity treatment flow process reclaims arsenic mineral, the activator copper sulphate 300g/t that in No. 3 mine tailing flotation cells, adds earlier arsenic mineral, add collecting agent ethyl xanthate 150g/t, the flotation arsenic mineral, with the arsenic rough concentrate of a flotation bed table concentration, condition is shaking table stroke 1.2cm again, jig frequency is 400 times/minute, selected secondary obtains grade 36.18%, the rate of recovery 56.87% arsenic concentrate and No. 4 mine tailings;
No. 4 mine tailing adopts table concentration tin, and the sorting flow process is an one roughing, and rough concentrate is selected, and the separation by shaking table condition is stroke 1.1cm, jig frequency 410 times/minute, and obtaining grade is 43.72%, the rate of recovery is 54.01% tin concentrate and chats.
Embodiment 2: raw material is a Guangxi Hua Xi group Chang Po ore dressing plant cassiterite polymetallic sulphide ore milltailings, and the material composition weight percentage is Sn 0.57%, Pb 0.22%, Zn 3.27%, Sb 0.1 5%, S 5.70%, As 0.87%, SiO
240.95%, Fe 10.62%, CaO 13.18%, Al
2O
35.60%, Mg 1.50%;
Mine tailing is sieved-3+0.45mm and-0.45 two grade with sieve, and-3+0.45mm throws tail with the movable-sieve jig sorting, and-0.45mm throws tail with the spiral chute sorting, can abandon productive rate and be 41.74% mine tailing, has improved selected grade;
The rough concentrate granularity of abandoning behind the mine tailing is-3+0mm grade, all goes into mill, adopts suitable sphere diameter and reasonable sphere diameter proportioning, accurate sphere diameter, and the selective milling of the reasonable application of force, grinding particle size-200 order accounts for 94.4% and enters flotation;
The plumbous antimony of flotation of ore pulp behind the ore grinding, transfer slurry pH with sodium carbonate and 2: 1 proportionings of lime, during pH=10.5, add zinc sulfate 400g/t, potassium cyanide 100g/t, clorox 180g/t makes the zinc mineral inhibitor, add diethyldithiocarbamate 110g/t and 25# black powder 100g/t and make plumbous antimony collecting agent, add No. 2 oily 40g/t flotation of lead antimony rough concentrates of foaming agent, pass through table concentration again, condition is stroke 1.3cm, jig frequency 400 times/minute, obtaining the Pb+Sb grade is 50.52%, the lead-antimony concentrate of lead recovery 44.76% and No. 1 mine tailing;
Zinc is reclaimed in No. 1 mine tailing flotation: add sodium carbonate and lime earlier, ratio is transferred the pH value of ore pulp at 2: 1, and pH=10.7 adds CuSO
4400g/t makes the activator of zinc mineral, add clorox and sodium humate (1: 1) 200g/t again and suppress sulphur, arsenic mineral, add six inclined to one side sodium sulphate and waterglass (1: 1) 250g/t and suppress gangue mineral, add collecting agent and defend basic xanthate 80g/t, behind the Z-200 40g/t, add No. 2 oily 30g/t of foaming agent, flotation, through one thick two smart flow process, obtaining grade is 50.27%, the rate of recovery is 53.09% zinc concentrate, and zinc concentrate contains indium 0.176% and No. 2 mine tailings;
No. 2 mine tailing reclaims the sulphur concentrate: No. 2 mine tailing adopts floatation to reclaim sulphur, add activator 450g/t copper sulphate in the tank diameter before flotation device earlier, the potassium 400g/t that adds heavy chromium again suppresses arsenic mineral, add ethyl xanthate 60g/t collecting sulphur ore deposit, add No. 2 oil flotation sulphur of 20g/t foaming agent, adopt one thick one smart flow process to obtain grade 36.17%, the rate of recovery is 52.05% sulphur concentrate and No. 3 mine tailings;
3, number mine tailing reclaims arsenic: adopt flotation---and gravity separation technology reclaims arsenic, the activator copper sulphate 300g/t that in the flotation cell of No. 3 mine tailings, adds earlier arsenic mineral, add collecting agent ethyl xanthate 150g/t again, flotation arsenic, flotation concentrate table concentration, condition are stroke 1.1cm, 410 times/minute selected secondaries of jig frequency, obtaining grade is 35.38%, and the rate of recovery is arsenic concentrate and No. 4 mine tailings of 53.92%;
No. 4 mine tailing selects tin: adopt table concentration tin, flow process is a thick essence, separation by shaking table condition stroke 1.1cm; Jig frequency 415 times/minute, obtaining grade is 41.86%, the rate of recovery is 52.28% tin concentrate.
Claims (5)
1. method that from the milltailings of stannum-contained multi-metal sulphide ore, reclaims valuable mineral, it is characterized in that: method is finished according to the following steps:
1), with raw material stannum-contained multi-metal sulphide ore milltailings tailings discarding by preconcentration, throw selected raw material granularity behind the tail and be-3+0mm is selected in raw material;
2), selected raw material goes into the ball mill ore grinding, obtains the ore pulp that grinding particle size-200 order accounts for 95%-98%;
3),-200 orders account for the ore pulp of 95%-98%, enter flotation, adding 2: 1 sodium carbonate of weight ratio and lime adjustment slurry pH is 10-12, stirred 3-5 minute, the inhibitor zinc sulfate 400g/t-600g/t that adds zinc mineral again, potassium cyanide 100g/t-200g/t, clorox 100g/t-200g/t, stirred 3-5 minute, the collecting agent 25# black powder 100g/t-250g/t that adds plumbous antimony mineral, diethyldithiocarbamate 80g/t-180g/t stirred 3-5 minute, add No. 2 oil again and make foaming agent 20g/t-50g/t, stir and open charging valve after 3-5 minute, drew together bubble 7-10 minute, obtain plumbous antimony rough concentrate, after plumbous antimony rough concentrate is selected, get lead-antimony concentrate and No. 1 mine tailing;
4), No. 1 mine tailing ore pulp of flotation reclaims zinc mineral, add 2: 1 sodium carbonate of weight ratio and lime earlier and adjust pH values of pulp=10-11, add copper sulphate 300g/t-500g/t again, stirred 3-5 minute, add 1: 1 calcium hypochlorite of weight ratio and sodium humate 150-350g/t again, stir after 3 minutes, add collecting agent and defend basic xanthate 50g/t-100g/t and Z-200 30g/t-50g/t, stir and add No. 2 oily 30g/t-40g/t of foaming agent after 3-5 minute, stir after 3-5 minute, open charging valve, drew together bubble 5-7 minute, through selected, obtain zinc concentrate and No. 2 mine tailings;
5), No. 2 mine tailing flotation of ore pulp reclaim the sulphur concentrate, at first add the copper sulphate of 300g/t-600g/t, stirred 3-5 minute, add potassium bichromate 350g/t-500g/t, stirred 3-5 minute, and added ethyl xanthate 50g/t-80g/t, stirred 3-5 minute, add No. 2 oily 10g/t-20g/t of foaming agent, stir and open charging valve after 3-5 minute, drew together bubble 5-7 minute, get the troilite rough concentrate, through selected, obtain sulphur concentrate and No. 3 mine tailings;
6), No. 3 mine tailing ore pulps enter flotation and reclaim arsenic mineral, at first add copper sulphate 200g/t-400g/t, stirred 3-5 minute, add collecting agent ethyl xanthate 100g/t-200g/t again, stir and open charging valve flotation arsenic mineral after 3-5 minute, get the arsenic rough concentrate, the arsenic rough concentrate obtains arsenic concentrate and No. 4 mine tailings through selected;
7), No. 4 mine tailing ore pulps adopt the table concentration tin, the condition of separation by shaking table is stroke 1-1.5cm, jig frequency 380 times/minute-420 times/minute adopts the flow process of a thick essence to obtain tin concentrate and chats.
2. the method that from the milltailings of stannum-contained multi-metal sulphide ore, reclaims valuable mineral according to claim 1, it is characterized in that: described tailings discarding by preconcentration, the mine tailing of right-3mm+0.45mm adopts the vibro-assisted jigging tailings discarding by preconcentration, for adopting into the spiral chute tailings discarding by preconcentration less than the mine tailing of 0.45mm.
3. the method that from the milltailings of stannum-contained multi-metal sulphide ore, reclaims valuable mineral according to claim 1, it is characterized in that: described plumbous antimony rough concentrate, adopt table concentration, condition is shaking table stroke 1-2cm, and it is lead-antimony concentrate and No. 1 mine tailing more than 50% that jig frequency obtains grade for 380-400 time/minute.
4. the method that from the milltailings of stannum-contained multi-metal sulphide ore, reclaims valuable mineral according to claim 1, it is characterized in that: described arsenic rough concentrate ground is selected to be at stroke 1.1cm-2cm with shaking table, selected under the condition that jig frequency is 380-420 time/minute, obtain arsenic concentrate.
5. the method that from the milltailings of stannum-contained multi-metal sulphide ore, reclaims valuable mineral according to claim 1, it is characterized in that: described material composition weight percentage is tin 0.3%0.57%, plumbous 0.27%-0.4%, antimony 0.15%-0.21%, zinc 2.44%-3.27%, sulphur 5.7%-9.53%, arsenic 0.87%-1.24%.
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