CN103951360A - Metal mineral product exploitation tailing slurry curing agent and its application technology - Google Patents
Metal mineral product exploitation tailing slurry curing agent and its application technology Download PDFInfo
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- CN103951360A CN103951360A CN201410123763.5A CN201410123763A CN103951360A CN 103951360 A CN103951360 A CN 103951360A CN 201410123763 A CN201410123763 A CN 201410123763A CN 103951360 A CN103951360 A CN 103951360A
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- solidifying agent
- tailings slurry
- aluminate
- mixture
- powder
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- 239000002002 slurry Substances 0.000 title claims abstract description 99
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 75
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 36
- 239000002184 metal Substances 0.000 title claims abstract description 36
- 229910052500 inorganic mineral Inorganic materials 0.000 title abstract description 15
- 239000011707 mineral Substances 0.000 title abstract description 15
- 238000005516 engineering process Methods 0.000 title abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000203 mixture Substances 0.000 claims abstract description 48
- 238000003756 stirring Methods 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 29
- 229910052742 iron Inorganic materials 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 25
- 239000002893 slag Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000292 calcium oxide Substances 0.000 claims abstract description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 5
- 150000004645 aluminates Chemical class 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000003723 Smelting Methods 0.000 claims abstract description 3
- 238000005065 mining Methods 0.000 claims description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- -1 magnesium aluminate Chemical class 0.000 claims description 11
- 230000010412 perfusion Effects 0.000 claims description 11
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 10
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 10
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 10
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 10
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 5
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 claims description 5
- LFZAXBDWELNSEE-UHFFFAOYSA-N [S].[K] Chemical compound [S].[K] LFZAXBDWELNSEE-UHFFFAOYSA-N 0.000 claims description 5
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 5
- 239000000920 calcium hydroxide Substances 0.000 claims description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 5
- 235000011132 calcium sulphate Nutrition 0.000 claims description 5
- 239000011790 ferrous sulphate Substances 0.000 claims description 5
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 5
- 238000009775 high-speed stirring Methods 0.000 claims description 5
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 5
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 5
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 claims description 5
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 5
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 239000001095 magnesium carbonate Substances 0.000 claims description 5
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 5
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 5
- 229960001708 magnesium carbonate Drugs 0.000 claims description 5
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 5
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 5
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 5
- 239000000347 magnesium hydroxide Substances 0.000 claims description 5
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 5
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 5
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 5
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 5
- 235000015320 potassium carbonate Nutrition 0.000 claims description 5
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 3
- 239000010959 steel Substances 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 description 14
- 235000010755 mineral Nutrition 0.000 description 13
- 239000004568 cement Substances 0.000 description 12
- 238000011161 development Methods 0.000 description 10
- 239000000470 constituent Substances 0.000 description 9
- 208000034189 Sclerosis Diseases 0.000 description 7
- 238000004064 recycling Methods 0.000 description 7
- 239000007858 starting material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 238000010348 incorporation Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
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- 238000001514 detection method Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000008235 industrial water Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004881 precipitation hardening Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
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- 241000196324 Embryophyta Species 0.000 description 1
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- 239000003500 flue dust Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
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Abstract
The invention provides a metal mineral product exploitation tailing slurry curing agent and its application technology. The curing agent is prepared by stirring a mixture composed of steel slag micro-powder or grain slag powder and auxiliary materials under a rotating speed of above 400rpm for 7-10min; the mixture comprises 10-15% of sulfate, 9-14% of carbonate, 6-8% of aluminate, 5-10% of sulfoaluminate, 6-10% of ferriferous oxide, 5-20% of chloride, 4-8% of hydroxide, 15% of calcium oxide and 15% of silicon oxide; the steel slag micro-powder or grain slag powder is steel slag micro-powder or grain slag powder generated in the iron making or smelting process of iron ore; and the fineness of each of the above various raw materials is above 450 meshes.
Description
Technical field
The present invention is under the jurisdiction of mining engineering field, relates in particular to a kind of mineral metal products exploitation mine tailing solidifying agent and application art thereof.
Technical background
The a large amount of various mineral metal products of the every average annual exploitation in countries in the world, comprise nonferrous metal ore, the large class of ferrous metal mineral products (being iron ore) two, and China is especially true.And will produce the Tailings Slurry (concentration is generally 55%-70%, minority below 55% or more than 70%) that is harmful in a large number environment in mineral metal products exploitation.As: Gu Shan mining company of Magang Group company harmonious mountain iron ore, year 1100000 tons of iron ores of exploitation (large-scale mine), produce Tailings Slurry and reach 600,000 tons.For a long time, in mineral metal products exploitation, no matter be underground mining both at home and abroad, or strip mining transformation, the traditional Tailings Dam draining precipitation discharge Disposal Measures of the more employing of a large amount of Tailings Slurries of generation.But Tailings Dam draining precipitation tailing disposal slurry exists seven aspects to be difficult to or insurmountable major issue: 1. build Tailings Dam expropriation of land difficulty, even can levy without ground; 2. there is very large landslide and the potential threat of rubble flow (particularly threatening larger in district doughtily in large, the concentrated rainfall of annual rainfall) in Tailings Dam; 3. the throw out after Tailings Slurry draining, under the condition of dehydration mummification in the open, often produces serious wind and plays airborne dust, gray haze even, long-term major polluting atmosphere environment; 4. Tailings Slurry long-term storage, in Tailings Dam, will cause certain pollution to underground water; 5. Tailings Slurry outdoor storage, in Tailings Dam, is also harmful to volatilization vegeto-animal toxic gas; In addition, underground mining is by a large amount of worked-out sections of leaving over, if harmonious mountain iron ore is every year because underground mining is left over the worked-out section that exceedes 20 ten thousand steres, these worked-out sections of backfill in time in exploitation, with prevention and control exploitation security incident, and avoid or alleviate the environmental hazards such as surface collapse, ground fissure, non-uniform settling, and all more employing cement bond thing backfilling goafs, each mine at present.Adopt cement bond thing backfilling goaf to have four aspect major defects: 1. backfill expense is very high; 2. because cement bond thing bleed is large, volumetric shrinkage is difficult to ensure greatly filling effect; 3. on the metal agitating vane of backfill cement injection cementing matter because exploitation, threat production safety cannot be worked, be had a strong impact on to continuous gelling cement bond thing; 4. cause the consumption of more cement baking ore resource used and electric energy because backfill is used cement in a large number, and cause environmental pollution because cement baking discharges flue dust.
Summary of the invention
The object of the invention is to solve the defect that above-mentioned prior art exists, for a large amount of Tailings Slurries that produce in mineral metal products exploitation, in order to stop Tailings Slurry environmental pollution, realize tailings liquid recycling, reduce worked-out section backfill expense, reduce worked-out section backfill difficulty, expand Tailings Dam discharge capacity, avoid the problems such as Tailings Dam landslide and rubble flow, particularly push forward mining industry Sustainable development comprehensively, mining activity and harmonious development, reliably implement the Scientific Outlook on Development of To Mining Development, make great efforts to strengthen Mining Environment Conservation and catastrophe Ability of emergency management, the present invention proposes a kind of mineral metal products exploitation mine tailing solidifying agent and application art thereof.
A kind of underground metal mining Tailings Slurry solidifying agent, under the rotating speed of the mixture that this solidifying agent is made up of slag micro powder or grain slag powder and auxiliary material more than 400 revs/min, high-speed stirring is made for 7 minutes-10 minutes; Described mixture comprises: vitriol 10-15%, carbonate 9-14%, aluminate 6-8%, sulplo-aluminate 5-10%, ferriferous oxide 6-10%, muriate 5-20%, oxyhydroxide 4-8%, calcium oxide 15%, silicon oxide 15%; Described slag micro powder or grain slag powder are slag micro powder or the grain slag powder that iron ore produces in ironmaking or smelting process; The fineness of various raw materials is all more than 450 orders above.
Further, underground metal mining Tailings Slurry solidifying agent as above, described vitriol is the mixture of calcium sulfate, ferrous sulfate, sodium sulfate and magnesium sulfate, mass ratio is 1-4: 1-2: 2-4: 2-4.
Further, underground metal mining Tailings Slurry solidifying agent as above, described carbonate is the mixture of magnesiumcarbonate, salt of wormwood, sodium bicarbonate and iron protocarbonate, mass ratio is 2-3: 1-3: 3: 1-4.
Further, underground metal mining Tailings Slurry solidifying agent as above, described aluminate is the mixture of sodium aluminate, magnesium aluminate, aluminic acid ferrous iron and potassium aluminate, mass ratio is 1-4: 1: 2-3: 3-4.
Further, underground metal mining Tailings Slurry solidifying agent as above, described sulplo-aluminate is the one in sulphur potassium aluminate, sulphur sodium aluminate, sulphur iron aluminate could, calcium sulphoaluminate.
Further, underground metal mining Tailings Slurry solidifying agent as above, described ferriferous oxide is the mixture of iron protoxide, ferric oxide, ferric oxide and Z 250, mass ratio is 2-4: 1-3: 2: 2-3.
Further, underground metal mining Tailings Slurry solidifying agent as above, described muriate is the mixture of sodium-chlor, Repone K, iron(ic) chloride and magnesium chloride, mass ratio is 2-3: 1-3: 1-4: 2-4.
Further, underground metal mining Tailings Slurry solidifying agent as above, is characterized in that, described oxyhydroxide is the mixture of sodium hydroxide, calcium hydroxide, ferrous hydroxide and magnesium hydroxide, and mass ratio is 1-2: 1-4: 1-3: 2-4.
An application art that adopts solidifying agent described in claim 1, comprises the following steps:
(1), get a certain amount of Tailings Slurry, according to the weight of its concentration calculating tailing dry powder;
(2), according to the weight of the mine tailing dry powder that calculates, in Tailings Slurry, mix the solidifying agent of certain mass percent, solidifying agent 3%-8%, mine tailing siccative 92%-97%;
(3), by disposable the mixture of Tailings Slurry and solidifying agent input settling tank, and rapid stirring is even, stirring velocity: 100 revs/min-120 revs/min, churning time: 3 minutes-5 minutes;
(4), in settling tank, allow the Tailings Slurry that mixes solidifying agent that stirs leave standstill 10 seconds-10 minutes, treat that a large amount of elutriations go out;
(5), adopt lift pump, the water that in sucking-off settling tank, drop goes out from Tailings Slurry;
(6), adopt slush pump, import in perfusion pond and stirring at low speed by separating out Tailings Slurry throw out after water in settling tank, stirring velocity: 60 revs/min-80 revs/min;
(7), adopt slush pump, by perfusion pond in the backfill of Tailings Slurry throw out pour into underground metal mining produce worked-out section.
Mineral metal products exploitation mine tailing solidifying agent provided by the invention and application art thereof, harmlessness disposing and the recycling of a large amount of harmful Tailings Slurries that produce for all kinds of mineral metal products underground minings such as iron, non-ferrous metal, strip mining transformation, both can be used for Tailings Slurry draining precipitation and solidified go back to the underground worked-out section of filling out, also can be used for the outdoor dry heap of Tailings Slurry draining (not causing the pollution such as ambient atmosphere, underground water), extremely meet the great demand of national development strategy.Of the present invention applying, stop tailings liquid environmental pollution by fine, realizing tailings liquid recycles, reduce the hole backfill expense of adopting, reduce and adopt hole backfill difficulty, expand Tailings Dam discharge capacity, avoid Tailings Dam landslide and rubble flow, exploitation technique of dry-tailing stacking etc., particularly can push forward mining industry Sustainable development comprehensively, mining activity and harmonious development, reliably implement the Scientific Outlook on Development of To Mining Development, make great efforts to strengthen Mining Environment Conservation and catastrophe Ability of emergency management, forming as early as possible Tailings Slurry environmental protection disposes and the systems technology measure of recycling and corresponding National Mine environment protection industry standard, meet the great demand of national development strategy.
Embodiment
For making object of the present invention, technical scheme, advantage clearer, below in conjunction with the embodiment in the present invention, the technical scheme in the present invention is carried out to clear, complete description, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
Solidifying agent proportioning raw materials: its raw material comprises according to weight ratio: calcium sulfate, ferrous sulfate, sodium sulfate and magnesium sulfate 2: 1: 4: 3 mixture 15%; Magnesiumcarbonate, salt of wormwood, sodium bicarbonate and iron protocarbonate 2: 3: 3: 1 mixture 14%; Sodium aluminate, magnesium aluminate, aluminic acid ferrous with potassium aluminate 1: 1: 3: 4 mixture 6%; In sulphur potassium aluminate, sulphur sodium aluminate, sulphur iron aluminate could, calcium sulphoaluminate any 8%; Calcium oxide 15%; Silicon oxide 10%; Iron protoxide, ferric oxide, ferric oxide and Z 250 4: 1: 2: 3 mixture 6%; Sodium-chlor, Repone K, iron(ic) chloride and magnesium chloride 2: 3: 1: 3 mixture 15%; Sodium hydroxide, calcium hydroxide, ferrous hydroxide and magnesium hydroxide 1: 1: 3: 4 mixture 4%.
Tailings Slurry solidifying agent industrialized manufacturing technique flow process:
(1) step: require to choose various starting material according to the control of grade and objectionable constituent type, content, and detect into the raw-material grade of factory (effective constituent percentage composition), fineness, water content, and type, the content etc. of objectionable constituent.
(2) step: starting material are pulverized with ultrafine-milled, made various raw-material fineness at least reach 450 orders.
(3) step: according to the turnout of each batch, according to various raw-material mix proportion schemes, detection grade, calculate various raw-material consumptions, then all raw materials are once dropped in vertical or horizontal high-speed stirrer, rotating speed high-speed stirring more than adopting 400 revs/min 7 minutes, is solidifying agent finished product.
Solidifying agent is adopted hole operating technique for the backfill of underground mining Tailings Slurry draining precipitation hardening
(1) step: according to the Tailings Slurry consumption in every batch of backfill underground mining hole, according to the concentration of Tailings Slurry, calculate the weight of mine tailing siccative;
(2) step: according to the sedimentary hardening strength of Tailings Slurry draining (unconfined compression strength) of design requirements, determine the mixed ratio of Tailings Slurry solidifying agent, wherein, solidifying agent 3%, mine tailing siccative 97%.
(3) step: in the Tailings Slurry amount that every batch of backfill underground mining hole is needed and the disposable input settling tank of incorporation of solidifying agent, and rapid stirring is even, stirring velocity: 100 revs/min, churning time: 5 minutes.
(4) step: in settling tank, allow the Tailings Slurry that mixes solidifying agent stirring leave standstill 5 minutes, treat that a large amount of elutriations go out;
(5) step: adopt lift pump, the water that in sucking-off settling tank, drop goes out from Tailings Slurry, and be pumped to industrial water system, to realize the recycling of drop water outlet.
(6) step: adopt slush pump, the Tailings Slurry throw out of separating out in settling tank after water is imported in perfusion pond and stirring at low speed, stirring velocity: 60 revs/min, hole is adopted in wait pumping backfill.
(7) step: adopt slush pump, Tailings Slurry throw out backfill in perfusion pond is poured into Cai Dongzhong, require stirring at low speed throw out in filling process, stirring velocity: 80 revs/min.
The present embodiment mixes the Tailings Slurry of solidifying agent, the microdilatancy sclerosis fast of throw out after draining, and the final strength of sclerosis calculus body, impermeability, the anti-immersion property of softening, anti-immersion slaking etc. meet the index request of underground mining hole backfill, can replace the reinforcement of concrete in adopting hole backfill, thereby fine avoided adopting in the past in the backfill of hole consume to cement, sandy gravel etc. are a large amount of.
Embodiment 2:
Solidifying agent proportioning raw materials: its raw material comprises according to weight ratio: calcium sulfate, ferrous sulfate, sodium sulfate and magnesium sulfate 1: 2: 2: 4 mixture 10%; Magnesiumcarbonate, salt of wormwood, sodium bicarbonate and iron protocarbonate 3: 1: 3: 3 mixture 12%; Sodium aluminate, magnesium aluminate, aluminic acid ferrous with potassium aluminate 3: 1: 2: 4 mixture 7%; In sulphur potassium aluminate, sulphur sodium aluminate, sulphur iron aluminate could, calcium sulphoaluminate any 10%; Calcium oxide 15%; Silicon oxide 15%; Iron protoxide, ferric oxide, ferric oxide and Z 250 3: 1: 2: 3 mixture 10%; Sodium-chlor, Repone K, iron(ic) chloride and magnesium chloride 3: 1: 4: 2 mixture 20%; Sodium hydroxide, calcium hydroxide, ferrous hydroxide and magnesium hydroxide 2: 3: 1: 4 mixture 8%.
Tailings Slurry solidifying agent industrialized manufacturing technique flow process:
(1) step: require to choose various starting material according to the control of grade and objectionable constituent type, content, and detect into the raw-material grade of factory (effective constituent percentage composition), fineness, water content, and type, the content etc. of objectionable constituent.
(2) step: starting material are pulverized with ultrafine-milled, made various raw-material fineness at least reach 450 orders.
(3) step: according to the turnout of each batch, according to various raw-material mix proportion schemes, detection grade, calculate various raw-material consumptions, then all raw materials are once dropped in vertical or horizontal high-speed stirrer, rotating speed high-speed stirring more than adopting 450 revs/min 7 minutes, is solidifying agent finished product.
Solidifying agent is adopted hole operating technique for the backfill of underground mining Tailings Slurry draining precipitation hardening
(1) step: according to the Tailings Slurry consumption in every batch of backfill underground mining hole, according to the concentration of Tailings Slurry, calculate the weight of mine tailing siccative;
(2) step: according to the sedimentary hardening strength of Tailings Slurry draining (unconfined compression strength) of design requirements, determine the mixed ratio of Tailings Slurry solidifying agent, wherein, solidifying agent 6%, mine tailing siccative 94%.
(3) step: in the Tailings Slurry amount that every batch of backfill underground mining hole is needed and the disposable input settling tank of incorporation of solidifying agent, and rapid stirring is even, stirring velocity: 120 revs/min, churning time: 3 minutes.
(4) step: in settling tank, allow the Tailings Slurry that mixes solidifying agent stirring leave standstill 10 minutes, treat that a large amount of elutriations go out;
(5) step: adopt lift pump, the water that in sucking-off settling tank, drop goes out from Tailings Slurry, and be pumped to industrial water system, to realize the recycling of drop water outlet.
(6) step: adopt slush pump, the Tailings Slurry throw out of separating out in settling tank after water is imported in perfusion pond and stirring at low speed, stirring velocity: 80 revs/min, hole is adopted in wait pumping backfill.
(7) step: adopt slush pump, Tailings Slurry throw out backfill in perfusion pond is poured into Cai Dongzhong, require stirring at low speed throw out in filling process, stirring velocity: 80 revs/min.
The present embodiment mixes the Tailings Slurry of solidifying agent, the microdilatancy sclerosis fast of throw out after draining, and the final strength of sclerosis calculus body, impermeability, the anti-immersion property of softening, anti-immersion slaking etc. meet the index request of underground mining hole backfill, can replace the reinforcement of concrete in adopting hole backfill, thereby fine avoided adopting in the past in the backfill of hole consume to cement, sandy gravel etc. are a large amount of.
Note: solidifying agent is adopted hole operating technique for the backfill of underground mining Tailings Slurry draining precipitation hardening, in described step 4, the precipitation draining time is because of difference differences such as Tailings Slurry starting point concentration, curing agent ratio example, mixing uniformities, Tailings Slurry starting point concentration is higher, curing agent ratio routine larger, mixing uniformity better, the precipitation draining time is shorter, is generally 10 seconds-10 minutes; In step 7, employing maximum perfusion pressure or the always amount of pouring into are as the termination criteria of adopting hole backfill perfusion, perviousness according to the spatial volume in underground mining hole, country rock to Tailings Slurry precipitation mixture, the sclerosis micro-expansibility of Tailings Slurry precipitation mixture, rationally estimate maximum perfusion pressure or the total amount of pouring in advance.
Mineral metal products exploitation tail ore pulp by draining, air-dry after, without sorting, only carry out simple fragmentation, carry out 1 ton of mineral metal products exploitation tail ore pulp dry powder, 3500/ ton, solidifying agent cost unit (containing administration cost during construction).Compound after stirring can replace the reinforcement of concrete in the backfill of underground mining hole, 28 days intensity 4-5MPa of throw out sclerosis meet the requirement of strength of adopting hole backfill, and in throw out process of setting, have volume micro-expansibility, linear expansivity has reached 0.005m/1m-0.01m/1m.
Because replacing cement to mix Tailings Slurry formation consolidating material, tailing solidifying agent of the present invention succeeds in the harmonious mountain iron ore Goaf Area commerical test of Gu Shan mining company of backfill (filling) Magang Group company (pilot scale plant), and compared with existing cement, significantly reduce filling expense, reduce filling difficulty, improve filling effect, also because thoroughly having solved the thorny difficult problem that Tailings Slurry discharges in the past, Tailings Slurry recycling (adopts in the past Tailings Dam tailing disposal slurry simultaneously, not only need to take out larger expense, for building Tailings Dam expropriation of land, environmental protection compensation, vegetation compensation etc., and the problem that often has expropriation of land difficulty or can levy without ground), Goaf Area, current harmonious mountain all adopts tailing solidifying agent to mix Tailings Slurry and implements filling, the consumption of tailing solidifying agent reaches 80 tons at the most every day.
Embodiment 3:
Solidifying agent proportioning raw materials: its raw material comprises according to weight ratio: calcium sulfate, ferrous sulfate, sodium sulfate and magnesium sulfate 4: 2: 2: 2 mixture 13%; Magnesiumcarbonate, salt of wormwood, sodium bicarbonate and iron protocarbonate 2: 1: 3: 4 mixture 9%; Sodium aluminate, magnesium aluminate, aluminic acid ferrous with potassium aluminate 4: 1: 2: 3 mixture 8%; In sulphur potassium aluminate, sulphur sodium aluminate, sulphur iron aluminate could, calcium sulphoaluminate any 5%; Calcium oxide 15%; Silicon oxide 12%; Iron protoxide, ferric oxide, ferric oxide and Z 250 2: 3: 2: 2 mixture 8%; Sodium-chlor, Repone K, iron(ic) chloride and magnesium chloride 2: 1: 2: 4 mixture 5%; Sodium hydroxide, calcium hydroxide, ferrous hydroxide and magnesium hydroxide 2: 4: 2: 2 mixture 6%.
Tailings Slurry solidifying agent industrialized manufacturing technique flow process:
(1) step: require to choose various starting material according to the control of grade and objectionable constituent type, content, and detect into the raw-material grade of factory (effective constituent percentage composition), fineness, water content, and type, the content etc. of objectionable constituent.
(2) step: starting material are pulverized with ultrafine-milled, made various raw-material fineness at least reach 450 orders.
(3) step: according to the turnout of each batch, according to various raw-material mix proportion schemes, detection grade, calculate various raw-material consumptions, then all raw materials are once dropped in vertical or horizontal high-speed stirrer, rotating speed high-speed stirring more than adopting 420 revs/min 8 minutes, is solidifying agent finished product.
Tailings Slurry solidifying agent is used for having an opencast mining of the dry heap of Tailings Slurry draining precipitation construction technology:
(1) step: according to the design heap carrying capacity in stockyard, height, the gradient of calculative determination tailing dry-heaping body and the degree of compactness of filling.
(2) step: according to height, the gradient of definite tailing dry-heaping body and the degree of compactness of filling, set in advance the stable safety coefficient of dry heap body, adopt static(al) finite element Three-dimensional Numerical Simulation Method, analog calculation is being guaranteed under dry heap body stable condition, the slip resistance (force of cohesion c, internalfrictionangleφ) that piling tails should possess.
(3) step: require the slip resistance (force of cohesion c, internalfrictionangleφ) that possesses according to piling tails, determine to the mixed ratio that mixes Tailings Slurry solidifying agent in piling tails.
(4) step: according to the mixed ratio of Tailings Slurry solidifying agent, determine the weight of tailing dry-heaping.
(5) step: according to the weight of tailing dry-heaping, according to the concentration of Tailings Slurry, calculate the quality of every batch of Tailings Slurry.
(6) step: by every batch of dry disposable input settling tank of curing dose of piling required mine tailing amount and need to mix, and rapid stirring is even, stirring velocity: 120 revs/min.Churning time: 5 minutes.(wherein, solidifying agent 8%, mine tailing siccative 92%).
(7) step: in settling tank, allow the Tailings Slurry that mixes solidifying agent stirring leave standstill 10 minutes, treat that a large amount of elutriations go out.Note: the precipitation draining time is because of difference differences such as Tailings Slurry starting point concentration, curing agent ratio example, mixing uniformities, Tailings Slurry starting point concentration is higher, curing agent ratio routine larger, mixing uniformity better, the precipitation draining time is shorter, is generally 10 seconds-10 minutes.
(8) step: adopt lift pump, extract out by the water of separating out in Tailings Slurry, and be pumped to industrial water system, to realize the recycling of drop water outlet.
(9) step: adopt slush pump, the Tailings Slurry throw out of separating out in settling tank after water is imported in another suction pit and stirring at low speed, stirring velocity: 70 revs/min, wait for the dry heap of pumping.
(10) step: adopt high pressure slurry pump, Tailings Slurry throw out in suction pit is pumped to dry stockyard, require stirring at low speed Tailings Slurry throw out (stirring velocity: 60 revs/min-80 revs/min) in suction pit in pumping procedure.Note: in order further to ensure the stability of tailing dry-heaping body, require point multiple steps progressively to pile and build tailing dry-heaping body.
Tailings Slurry solidifying agent beneficial effect of the present invention:
1. the time of Tailings Slurry draining precipitation was generally about 10 seconds about-15 minutes, and the time of draining precipitation is different because of solidifying agent incorporation, and incorporation is larger, and draining sedimentation time is shorter, 2. the throw out after Tailings Slurry draining, hardening strength reaches 1MPa left and right for 3 days, within 7 days, exceedes 3MPa (non-confining strength), 3. the water that drop goes out from Tailings Slurry reaches the national standard of process water completely, and the recyclable industrial production that is used further to, 4. the Tailings Slurry throw out after draining precipitation can all replace the reinforcement of concrete in the backfill of underground mining hole, the final strength of throw out sclerosis meets the requirement of strength of adopting hole backfill, and in throw out process of setting, there is volume micro-expansibility, thereby be more conducive to adopt the reliable backfill in hole, this is external carries out in backfilling process throw out and on agitating vane, does not produce a large amount of precipitation calculus bodies and (adopt existing concrete to adopting hole earth-filling method adopting hole, the gelling calculus body that a large amount of intensity is very high will be produced on backfill agitating vane, need manually under underground hot environment, to do the regularly frequent concrete gel of clearing up on blade, not only threaten production safety, and have a strong impact on mining produce), 5. solidifying agent also can be used for having an opencast mining of the reliable of mine tailing and Rapid dry heap, the new technology of all can yet be regarded as in mineral metal products strip mining transformation at home and abroad.
Tailing solidifying agent of the present invention belongs to a kind of ultrafine powder powder solid (fineness: 450 order left and right, order-1600) of canescence-Dark grey.
It is the main raw material(s) of tailing solidifying agent that the present invention adopts slag micro powder or grain slag powder, wherein, and slag micro powder: the waste material that blast furnace steel-making produces.Grain slag powder: also referred to as grain slag micro mist, the waste material that blast furnace ironmaking produces.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. a underground metal mining Tailings Slurry solidifying agent, is characterized in that, under the rotating speed of the mixture that this solidifying agent is made up of slag micro powder or grain slag powder and auxiliary material more than 400 revs/min, high-speed stirring is made for 7 minutes-10 minutes; Described mixture comprises: vitriol 10-15%, carbonate 9-14%, aluminate 6-8%, sulplo-aluminate 5-10%, ferriferous oxide 6-10%, muriate 5-20%, oxyhydroxide 4-8%, calcium oxide 15%, silicon oxide 15%; Described slag micro powder or grain slag powder are slag micro powder or the grain slag powder that iron ore produces in ironmaking or smelting process; The fineness of various raw materials is all more than 450 orders above.
2. underground metal mining Tailings Slurry solidifying agent according to claim 1, is characterized in that, described vitriol is the mixture of calcium sulfate, ferrous sulfate, sodium sulfate and magnesium sulfate, and mass ratio is 1-4: 1-2: 2-4: 2-4.
3. underground metal mining Tailings Slurry solidifying agent according to claim 1, is characterized in that, described carbonate is the mixture of magnesiumcarbonate, salt of wormwood, sodium bicarbonate and iron protocarbonate, and mass ratio is 2-3: 1-3: 3: 1-4.
4. underground metal mining Tailings Slurry solidifying agent according to claim 1, is characterized in that, described aluminate is the mixture of sodium aluminate, magnesium aluminate, aluminic acid ferrous iron and potassium aluminate, and mass ratio is 1-4: 1: 2-3: 3-4.
5. underground metal mining Tailings Slurry solidifying agent according to claim 1, is characterized in that, described sulplo-aluminate is the one in sulphur potassium aluminate, sulphur sodium aluminate, sulphur iron aluminate could, calcium sulphoaluminate.
6. underground metal mining Tailings Slurry solidifying agent according to claim 1, is characterized in that, described ferriferous oxide is the mixture of iron protoxide, ferric oxide, ferric oxide and Z 250, and mass ratio is 2-4: 1-3: 2: 2-3.
7. underground metal mining Tailings Slurry solidifying agent according to claim 1, is characterized in that, described muriate is the mixture of sodium-chlor, Repone K, iron(ic) chloride and magnesium chloride, and mass ratio is 2-3: 1-3: 1-4: 2-4.
8. underground metal mining Tailings Slurry solidifying agent according to claim 1, is characterized in that, described oxyhydroxide is the mixture of sodium hydroxide, calcium hydroxide, ferrous hydroxide and magnesium hydroxide, and mass ratio is 1-2: 1-4: 1-3: 2-4.
9. an application art that adopts solidifying agent described in claim 1, is characterized in that, comprises the following steps:
(1), get a certain amount of Tailings Slurry, according to the weight of its concentration calculating tailing dry powder;
(2), according to the weight of the mine tailing dry powder that calculates, in Tailings Slurry, mix the solidifying agent of certain mass percent, solidifying agent 3%-8%, mine tailing siccative 92%-97%;
(3), by disposable the mixture of Tailings Slurry and solidifying agent input settling tank, and rapid stirring is even, stirring velocity: 100 revs/min-120 revs/min, churning time: 3 minutes-5 minutes;
(4), in settling tank, allow the Tailings Slurry that mixes solidifying agent that stirs leave standstill 10 seconds-10 minutes, treat that a large amount of elutriations go out;
(5), adopt lift pump, the water that in sucking-off settling tank, drop goes out from Tailings Slurry;
(6), adopt slush pump, import in perfusion pond and stirring at low speed by separating out Tailings Slurry throw out after water in settling tank, stirring velocity: 60 revs/min-80 revs/min;
(7), adopt slush pump, by perfusion pond in the backfill of Tailings Slurry throw out pour into underground metal mining produce worked-out section.
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Cited By (1)
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