CN101492770A - Plant arsenic-removing pretreatment method for recycling golden from high-arsenic golden mine tailing - Google Patents
Plant arsenic-removing pretreatment method for recycling golden from high-arsenic golden mine tailing Download PDFInfo
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- CN101492770A CN101492770A CNA2009100941644A CN200910094164A CN101492770A CN 101492770 A CN101492770 A CN 101492770A CN A2009100941644 A CNA2009100941644 A CN A2009100941644A CN 200910094164 A CN200910094164 A CN 200910094164A CN 101492770 A CN101492770 A CN 101492770A
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- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 88
- 238000002203 pretreatment Methods 0.000 title claims abstract description 12
- 238000004064 recycling Methods 0.000 title description 5
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 76
- 229910052737 gold Inorganic materials 0.000 claims abstract description 44
- 239000010931 gold Substances 0.000 claims abstract description 44
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 43
- 241000196324 Embryophyta Species 0.000 claims abstract description 31
- 238000003306 harvesting Methods 0.000 claims abstract description 20
- 244000025254 Cannabis sativa Species 0.000 claims abstract 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims abstract 2
- 241000025852 Eremochloa ophiuroides Species 0.000 claims abstract 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- 239000003337 fertilizer Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 235000015165 citric acid Nutrition 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 2
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 claims description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims description 2
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 2
- 235000003704 aspartic acid Nutrition 0.000 claims description 2
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 claims description 2
- 230000035784 germination Effects 0.000 claims description 2
- 239000004021 humic acid Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000001630 malic acid Substances 0.000 claims description 2
- 235000011090 malic acid Nutrition 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims 1
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 claims 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 241001233061 earthworms Species 0.000 claims 1
- 235000013922 glutamic acid Nutrition 0.000 claims 1
- 239000004220 glutamic acid Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
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- 239000007921 spray Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
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- 235000002906 tartaric acid Nutrition 0.000 claims 1
- 230000012010 growth Effects 0.000 abstract description 7
- 239000002028 Biomass Substances 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
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- 239000003513 alkali Substances 0.000 abstract 1
- 230000006378 damage Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 21
- VJRVSSUCOHZSHP-UHFFFAOYSA-N [As].[Au] Chemical compound [As].[Au] VJRVSSUCOHZSHP-UHFFFAOYSA-N 0.000 description 11
- 239000002689 soil Substances 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
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- 229910052742 iron Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 241001113925 Buddleja Species 0.000 description 3
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- 230000002262 irrigation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008635 plant growth Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 238000005188 flotation Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical compound [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 1
- 239000004343 Calcium peroxide Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 1
- 206010017533 Fungal infection Diseases 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 241000361919 Metaphire sieboldi Species 0.000 description 1
- 208000031888 Mycoses Diseases 0.000 description 1
- 241000737257 Pteris <genus> Species 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229940000489 arsenate Drugs 0.000 description 1
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 description 1
- 235000019402 calcium peroxide Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- MPYDICYHUNOOFV-UHFFFAOYSA-N disodium azane Chemical compound N.N.[Na+].[Na+] MPYDICYHUNOOFV-UHFFFAOYSA-N 0.000 description 1
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 210000000416 exudates and transudate Anatomy 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229960002989 glutamic acid Drugs 0.000 description 1
- 150000002343 gold Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 229910052958 orpiment Inorganic materials 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 230000008439 repair process Effects 0.000 description 1
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- 239000002910 solid waste Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Cultivation Of Plants (AREA)
- Fertilizers (AREA)
Abstract
本发明涉及一种高砷金尾矿再回收金的植物除砷预处理方法。通过种植蜈蚣草或大叶井口边草，利用其对砷的超积累特性及其喜钙、耐碱、生物量大和生长期较短且破坏氰络离子的特性，靠其根系大量吸收富集金尾矿中的砷，并将砷向上输送和转移到地上部，再通过收割地上部而除去高砷金尾矿中的砷，从而完成对金尾矿二次利用的提砷预处理。The invention relates to a plant arsenic removal pretreatment method for recovering gold from high-arsenic gold tailings. By planting centipede grass or big-leaf wellhead edge grass, using its super-accumulation characteristics of arsenic and its calcium-loving, alkali-resistant, large biomass, short growth period and destruction of cyanide ions, it absorbs and enriches gold by its roots. The arsenic in the tailings is transported upwards and transferred to the aboveground part, and then the arsenic in the high-arsenic gold tailings is removed by harvesting the aboveground part, so as to complete the arsenic extraction pretreatment for the secondary utilization of the gold tailings.
Description
One, technical field
The present invention relates to a kind of plant arsenic-removing pretreatment method of recycling golden from high-arsenic golden mine tailing.Be a kind of by plantation Herba pteridis vittatae or Da Ye Herba Pteridis multifidae, utilize the tired characteristic of its ultraproduct to arsenic, by the arsenic in a large amount of absorbing enriched gold mines of its root system, and arsenic upwards carried and transfers to overground part, remove arsenic in the golden mine tailing by the harvesting overground part again, finish golden mine tailing second stage employ carried the arsenic pretreatment process.
Two, background technology
The gold mine tailing is the main solid waste that gold selects factory, and China's gold mine tailing resource is very abundant.The gold mine that built up before the seventies, traditional processing technologies such as flotation, gravity treatment, amalgamate-mercury choosing or gravity treatment-flotation are adopted in the dressing-works mostly, owing to be subjected to the restriction of factors such as industry policy, technical equipment, dressing and smelting process and fund, the rate of recovery of gold is low, therefore, in general, tailing all has quite high comprehensive utilization value.And because the second stage employ of mine tailing resource no longer needs mining, broken and corase grind ore deposit operation, production cost is low, also because price of gold rises, makes these mine tailing resources that higher recovery value arranged simultaneously.
At present, the high arsenic fine gold ore pretreatment technology has bio-oxidation, high-pressure oxidation and roasting oxidation.Bio-oxidation, roasting and high-pressure oxidation process investment are high, technical certain problem, the domestic successful experience that does not have suitability for industrialized production of still existing.Yet these method complex manufacturing, facility investment is big, also can make the arsenic-containing ores such as mispickel, orpiment, realgar of low toxicity be oxidized to the very high arsenic of toxicity, arsenate and sulfurous gas in the roasting process, causes environmental pollution.Therefore select for use cost-effective method to remove mineral such as the arsenic of gold mine, antimony, become the key factor of the extracting efficiency of raising gold, the efficient recovery that causes gold in the high arsenic difficult-treating gold mine is to study focus and difficult point at present both at home and abroad.In recent years, some special plants of a large amount of enrichment pollutents of portion on the ground--super enriching plant has become the focus of academia's research.Study the plant arsenic-removing method for this reason and remove the arsenic contain in the higher golden mine tailing of arsenic and become popular, found that the plant of enrichment arsenic mostly is the Pteris plant in a large number both at home and abroad.Herba pteridis vittatae and Da Ye Herba Pteridis multifidae all meet the standard of arsenic super enriching plant.
CN200610048663.6 relates to a kind of plant restoration method of administering lead pollution of soil, this method is by planting Pale Butterflybush Flower in the soil that is subjected to Lead contamination with direct transplanting or seeding method, make it survive growth, and upwards transport and be transported to overground part, harvesting overground part and it is removed when plant strain growth to 100～120cm or Pale Butterflybush Flower over-ground part Pb content reach 1400mg/kg, then can from soil, take away a large amount of lead, thereby reach the purpose of quick improvement lead pollution of soil.It is neutrality or slant acidity that this method will be regulated and control soil acidity or alkalinity, and plants Pale Butterflybush Flower according to the spacing in the rows of 2～4m.
CN01120519.9 relates to a kind of method of administering As polluted soil, present method relates to the method for repairing and administering As polluted soil (comprising wetland) with Herba pteridis vittatae, this method is passed through the arsenic in a large amount of absorbing environmentals of root system of Herba pteridis vittatae, and upwards carries and be transported to overground part.Gather in overground part (toothing 5～10cm height) when plant-growth to 50～80cm height or after growing 5～6 months and it is removed, then can from soil, take away a large amount of arsenic, thereby reach the purpose of quick removing arsenic contamination.For acid soil, then improve the acidity-basicity ph of contaminated soil by methods such as liming or alkaline fertilizers.
CN200710066021.3 the present invention relates to the plant that a kind of reduction contains high arsenic difficult-treating gold mine smelting selection cost and carries the arsenic pretreatment process.Promptly Herba pteridis vittatae or Da Ye Herba Pteridis multifidae separately or interplanting on arsenic-containing gold ore matrix, the root system by Herba pteridis vittatae or Da Ye Herba Pteridis multifidae absorbs the arsenic in the gold mine in a large number, and upwards carries and be transported to overground part.Harvesting overground part (toothing 3～5cm height) and it is removed when plant-growth to 30～50cm height then can be taken away a large amount of arsenic, thereby reach the purpose of quick removing arsenic from gold mine.
It is to utilize some self-sow or artificially breeding plant to reduce a kind of biologic pretreatment method of the arsenic content in the gold mine that plant is carried the arsenic pretreatment process, its essence is characteristic (being called the tired property of ultraproduct) by means of certain plants energy super quantity absorbing enriched arsenic, with sun power is motivating force, arsenic in a large amount of absorbing enriched cyaniding tailings matrix declines to a great extent mine tailing arsenic content by the harvesting plant.The golden plant of reclaiming again of the low-grade golden mine tailing of rich arsenic is carried the arsenic pretreatment process and utilizes some specified plant arsenic in the absorbing enriched gold mine tailing and reach the purpose that reduces mine tailing arsenic content quickly.Be applicable to through bio-oxidation, high-pressure oxidation and the pretreated various cyanidings of roasting and contain the arsenic tailings.
Three, summary of the invention
The object of the present invention is to provide a kind of plant arsenic-removing pretreatment method of recycling golden from high-arsenic golden mine tailing.By plantation Herba pteridis vittatae or Da Ye Herba Pteridis multifidae, utilize the tired characteristic of its ultraproduct to arsenic, by the arsenic in a large amount of absorbing enriched gold mines of its root system, and arsenic upwards carried and transfers to overground part, remove arsenic in the Gold Ore by the harvesting overground part again, golden mine tailing second stage employ proposed the arsenic pre-treatment thereby finish.
Regulate and control by the Agro-ecology means, its regulation measure comprises the Agro-ecology control method, as regulates its acidity-basicity ph value, moisture, Eo+ (Eh), fertilising etc.The dominant mechanism of Agro-ecology method is the arsenic in the golden mine tailing matrix of activation, increase the mobility of arsenic in the matrix, increase its rate of migration, can reduce effectively to a certain extent that arsenic reclaims the influence of lixiviate once again to gold in the golden mine tailing, and can play golden mine tailing arsenic removal repair to plant.
The present invention finishes by following steps.
1) high arsenic gold mine tailing is taken out from tailing dam through pre-treatment, the thickness of tiling 30～60cm, the pH that adjusts cyanidation tailings are 7.0～8.0 (neutral to weakly alkaline);
Can apply citric acid, oxalic acid, aspartic acid, L-glutamic acid, dilute hydrochloric acid, rare nitric acid and/or dilute sulphuric acid, adjust the pH of cyanidation tailings;
2) regulating the containing on the arsenic gold mine tailing of pH value, according to planting every 15～40cm kind or directly transplanting or spore is cultivated a strain Herba pteridis vittatae or Da Ye Herba Pteridis multifidae.Add acidic fertilizier and/or biological promotor to accelerate Da Ye Herba Pteridis multifidae or Herba pteridis vittatae root system to the absorbing enriched speed of arsenic in the CHARACTERISTICS OF TAILINGS SAND and the speed of growth of plant self;
Can introduce the success ratio that microbial preparation improves fungal infection, promote the symbiosis of mycorrhizal fungi and root system of plant, thereby strengthen the efficient of phytoremediation.
3) Herba pteridis vittatae or Da Ye Herba Pteridis multifidae gather in first and are its growth 3～5 months the time, or gather in first when arsenic content in its overground part surpasses 2500mg/kg, gather in once when arsenic content surpasses 2500mg/kg in overground part later on; Or when it grows into 40～70cm, gather in first, harvesting once during the harvesting overground part, is answered toothing 2～5cm when whenever growing into 40～70cm later on.
Change redox potential and can make sulfide become instability and oxidation discharges heavy metal, finally increased the content of arsenic in the matrix solution, improve the enrichment transport efficacy of plant arsenic.Utilize the happiness calcium characteristic of Herba pteridis vittatae in addition, the calcium peroxide film (CaO that forms when destroying cyaniding
2), make the cyanogen complex ion resolve into nutrients such as carbon, nitrogen by the growth and the root exudates of root system of plant, from root system the arsenic the tailings is transported to part of stem leaf on the ground in the time of along with plant absorbing nutrition.In addition for the golden mine tailing matrix that is rich in iron, Mn oxide, when increasing the matrix organic content, can suitably reduce redox potential, increase the dissolving of iron, Mn oxide, just be released with the heavy metal ion of iron, Mn oxide absorption or co-precipitation, help the absorption extraction of plant, for reclaiming iron, manganese simultaneously certain effect is arranged also simultaneously arsenic.
Compare advantage and positively effect that the present invention has with known technology
Compare with known technology, provided by the invention in high arsenic gold mine tailing plantation Herba pteridis vittatae or Da Ye Herba Pteridis multifidae, utilize that its biomass is big, vegetative period is short and to arsenic in a large amount of absorbing enriched gold of the tired characteristic of the ultraproduct of the arsenic mine tailing and the calcium in the tailings, remove the arsenic of association in the golden mine tailing by the harvesting overground part.The big and arsenic migration total amount height of absorbing enriched amount height, biomagnification coefficient with arsenic does not influence the characteristics such as cyaniding leaching of follow-up auriferous ore.
Four, embodiment
Embodiment 1
The arsenic content of certain high arsenic gold mine tailing is 1%, contains gold grade 0.3g/t.High arsenic gold mine tailing is taken out from tailing dam, and the thickness of tiling 40～50cm was ploughed deeply airing after 4～8 days, on this CHARACTERISTICS OF TAILINGS SAND with plantation one strain Herba pteridis vittatae every about 20cm, the irrigation of watering as required.Auxiliary pouring leaf surface trace fertilizer, its main component are that ammonium nitrate and primary ammonium phosphate are converted the liquid fertilizer that water is formed, and promote it to survive, strengthen photosynthesis, and can increase phytomass by prolonging leaf longevity.In golden mine tailing, water rare citric acid, rare malic acid solution simultaneously.After 4 months, gather in its overground part first, toothing 2～5cm is answered in harvesting.Measure by analysis, arsenic content is reduced to 6740mg/kg by original 10086mg/kg in the mine tailing, is equivalent to make the arsenic content in the gold mine to reduce 33.17%.Later every growth was gathered in once in 3 months, and the arsenic content in the golden mine tailing then constantly reduces, and finally reduced to 85mg/kg by the arsenic of 4 harvesting back cyanidation tailings.Harvested material send the waste guaveyard landfill, or carries out the recycling of arsenic.
Embodiment 2
The gold grade of certain high arsenic gold mine tailing is 0.6g/t, on average contains arsenic 0.7%, and high arsenic gold mine tailing is taken out from tailing dam, and the thickness of the 50～60cm that tiles is ploughed deeply once every day, after 5 days, on this CHARACTERISTICS OF TAILINGS SAND with 60 strains/m
2About spacing plantation Herba pteridis vittatae, between planting season, introduce earthworm and carry out the loose of a matrix, the irrigation of watering as required every two weeks.After plantation 6 months, the harvesting overground part, toothing 2～5cm is answered in harvesting.Arsenic content in the high arsenic gold mine tailing is reduced to 1036mg/kg from 7562mg/kg.
Embodiment 3
The arsenic content mean value of certain high arsenic gold mine tailing is 2.6%, and gold grade is 0.8g/t.High arsenic gold mine tailing is taken out from tailing dam, the CHARACTERISTICS OF TAILINGS SAND that hardens is broken into the particle diameter of 0.05～0.5mm, 1～1.5mm and 2～2.5mm, and three kinds of particle diameters are with the back 40cm that tiles of 1: 1: 1 ratio combination, plough deeply every day 2 times, after 3 days on this gold CHARACTERISTICS OF TAILINGS SAND to plant a strain Da Ye Herba Pteridis multifidae every the 30cm kind.In gold mine matrix, evenly spraying the b diammonium disodium edta salt (EDTA) of 0.1mmol/L, rare tartrate, rare citric acid, rare humic acid and/or rare oxysuccinic acid after the germination every other month.The irrigation of watering as required.After 4 months, gather in its overground part first.The Da Ye Herba Pteridis multifidae that cultivates in advance, continued growth lixiviate arsenic removal are just transplanted in the harvesting back.Grow and gathered in again in 4 months, drop to 110mg/kg by 2 harvesting back high arsenic gold mine tailing arsenic contents.
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| US9885095B2 (en) | 2014-01-31 | 2018-02-06 | Goldcorp Inc. | Process for separation of at least one metal sulfide from a mixed sulfide ore or concentrate |
| CN107971335A (en) * | 2017-11-28 | 2018-05-01 | 长春黄金研究院 | A kind of method of gold industry cyanogen slag phytoremediation |
| CN109013669A (en) * | 2018-09-28 | 2018-12-18 | 长春黄金研究院有限公司 | A kind of cyaniding tailing library mine tailings processing method |
| CN113426818A (en) * | 2021-07-02 | 2021-09-24 | 昆明理工大学 | Method for fixing heavy metal by adding lime powder after pyrolysis of tailings |
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- 2009-03-09 CN CNA2009100941644A patent/CN101492770A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9885095B2 (en) | 2014-01-31 | 2018-02-06 | Goldcorp Inc. | Process for separation of at least one metal sulfide from a mixed sulfide ore or concentrate |
| US10370739B2 (en) | 2014-01-31 | 2019-08-06 | Goldcorp, Inc. | Stabilization process for an arsenic solution |
| US11124857B2 (en) | 2014-01-31 | 2021-09-21 | Goldcorp Inc. | Process for separation of antimony and arsenic from a leach solution |
| CN106111690A (en) * | 2016-06-27 | 2016-11-16 | 安徽金联地矿科技有限公司 | A kind of mine soil restorative procedure and repair materials |
| CN107971335A (en) * | 2017-11-28 | 2018-05-01 | 长春黄金研究院 | A kind of method of gold industry cyanogen slag phytoremediation |
| CN109013669A (en) * | 2018-09-28 | 2018-12-18 | 长春黄金研究院有限公司 | A kind of cyaniding tailing library mine tailings processing method |
| CN109013669B (en) * | 2018-09-28 | 2021-07-06 | 长春黄金研究院有限公司 | Method for treating tailings of cyanided tailing pond |
| CN113426818A (en) * | 2021-07-02 | 2021-09-24 | 昆明理工大学 | Method for fixing heavy metal by adding lime powder after pyrolysis of tailings |
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