CN109332354A - A kind of method for innocent treatment of cyanogen-containing tailing - Google Patents
A kind of method for innocent treatment of cyanogen-containing tailing Download PDFInfo
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- CN109332354A CN109332354A CN201811105202.7A CN201811105202A CN109332354A CN 109332354 A CN109332354 A CN 109332354A CN 201811105202 A CN201811105202 A CN 201811105202A CN 109332354 A CN109332354 A CN 109332354A
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- cyanogen
- containing tailing
- filling material
- tailing
- innocent treatment
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- 229960004050 aminobenzoic acid Drugs 0.000 description 1
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- 125000004093 cyano group Chemical group *C#N 0.000 description 1
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- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of method for innocent treatment of cyanogen-containing tailing, belongs to mine waste residue process field, method particularly includes: cyanogen-containing tailing is preprocessed, rolling mixing and the processing of fixing of digestion step；Consolidating agent is added in immobilization treated cyanogen-containing tailing and innoxious filling material is made in cementitious matter consolidation；Heap is to Tailings Dam after innoxious filling material is conserved；Above-mentioned pretreatment is that multifunctional water-soluble high molecular polymer is added into cyanogen-containing tailing and is sent into concentration basin, is stirred, and filters pressing obtains concentration ore pulp.A kind of method for innocent treatment of cyanogen-containing tailing provided by the invention, using except cyanogen tailing be made not increase-volume, not substantially shrink, compression strength it is excellent, without the good filling material of cyaniding toxicity, freeze thawing resistance heat resistance, the processing method technical maturity, the rate of settling is high, and cyanide capture amount is big, cost savings, the four seasons can construct, and reagent dosage is few, and treating capacity is big and serialization, energy loss is low, realizes the sustainable development of economic society and environment.
Description
Technical field
The invention belongs to mine waste residue process fields, and in particular to a kind of method for innocent treatment of cyanogen-containing tailing.
Background technique
Cyanide belongs to extremely toxic substance, to people's lethal dose be 0.15~0.2g, minimal amount of cyanide can also make fish and
Aquatile is poisoned to death.But it was verified that cyanide is effective, reliable gold Extraction solvent, it, which has, extracts gold from back
High income, the features such as adaptable to ore, operating method is simple, easy to produce.Therefore, being extracted gold from using cyanide is become
The method generallyd use in domestic and international golden production.Since extraction of gold by cyanidation must be added to the cyanide of severe toxicity in process, and
Certain remaining CN is generated in ore pulp-, therefore also a large amount of cyanide wastewater inevitably just are generated in gold mining production
And cyanogen-containing tailing.Therefore, particularly necessary to the treatment research of cyanide wastewater in Gold Production and cyanogen-containing tailing.
Cyanidation tailings are acidity, the alkalinity, hypertoxic cyanide ion and again that gold ore generates after cyanide heap leaching technique mentions gold
The more metal waste residues of the terminal of metal component.For a long time, cyaniding tailing is being discharged into after filters pressing is concentrated as solid waste
Tailings Dam stockpiling.Cyaniding tailing is exceeded due to containing cyanogen as handled not in time, will cause a series of adverse consequences: cyaniding tailing
Heap abandon and occupy large area soil, and there are the risks such as water source and soil pollution；Waste mineral resources, hypertoxic cyanide ion and again
Metal ion seriously pollutes environment；It also will cause the serious accidents such as landslide, mud-rock flow.With the hair of the method for mining by the way of filling
Exhibition, carrying out filling to cyaniding tailing may be effective method, but since tailing leaching liquid contains a large amount of cyanide, directly
Ambient enviroment especially water environment certainly will be polluted by connecing filling, to give human health, animals and plants and entire ecosystem
System causes to seriously endanger, from environmental protection angle, it is necessary to handle these cyaniding tailings, avoid secondary pollution.
Domestic Treatment of cyanogen-contained wastewater is relatively more, mainly there is Pomolio-Celdecor process, Ozone, electrolysis method, ion-exchange, biology
Method etc..And occurrence form of the cyanide in tailing mainly has readily soluble cyanide, indissoluble cyanide, strong complex cyanide, weak network
Close cyanide etc..Currently, the removal of gold tailings cyanide is concentrated mainly on the processing of mine tailing wastewater, and to cyaniding total in tailing
The removal of object and Leaching research are seldom.Gold tailings specific aim processing technique is less, and alkaline chlorination process processing and filters pressing are dry
That there are treatment effects is unstable for heap, tailing bearing capacity is limited, needs the disadvantages of long term maintenance and management；Bioanalysis and naturally drop
Solution concentration for the treatment of is low, process is slow；Spoil reclaming extracts gold, silver, zinc etc. from tailing, and resource recovery can be improved,
It cheats enterprise and brings great economic benefit, but that there are treatment scales is small, the rate of recovery is low, and there are still a large amount of for the secondary tailing mentioned after essence
There is secondary pollution in cyanide, cannot fundamentally solve the problems, such as tailing.
The prior art such as CN104889134B discloses a kind of gold mine cyanogen-containing tailing Slag treatment method, uses closed
Mine tailings are tuned into mud by size mixing technology, after addition M medicament, deep oxidation agent and catalyst remove cyanogen, by tailing slag muck to tailing
Library, process flow is simple, and except cyanogen effect is good, but agents useful for same usage amount is big, and the Processes and apparatus of use is more demanding, finally
Processing cost is higher.
Summary of the invention
The purpose of the present invention is to provide a kind of method for innocent treatment of cyanogen-containing tailing, do not increase using except cyanogen tailing is made
Hold, do not shrink substantially, compression strength is excellent, without the good filling material of cyaniding toxicity, freeze thawing resistance heat resistance, processing method sedimentation speed
Rate is high, and cyanide capture amount is big, cost savings, and the four seasons can construct, and reagent dosage is few, and treating capacity is big and serialization, the energy damage
Consume low, the sustainable development of realization economy, society and environment.
The technical solution that the present invention is taken to achieve the above object are as follows:
A kind of method for innocent treatment of cyanogen-containing tailing, comprising: cyanogen-containing tailing is preprocessed, rolling mixing and digestion step
Rapid fixing processing；Consolidating agent is added in immobilization treated cyanogen-containing tailing and innoxious filling is made in cementitious matter consolidation
Material；Heap is to Tailings Dam after innoxious filling material is conserved；Above-mentioned pretreatment be added into cyanogen-containing tailing it is multi-functional water-soluble
Property high molecular polymer and be sent into concentration basin, stir, filters pressing obtains concentration ore pulp.This method is capable of fixing cyanide or other are heavy
Metal ion forms insoluble or low molten mixture to weaken its toxicity, the redox potential of ion is controlled, to handle danger
Toxic and harmful gas and solable matter in dangerous waste also weaken its toxicity, recycle its in consolidating agent, cementitious matter and formula
He uses components matching, alternative traditional cement, while inside the hydrated silicate and aquation aluminate fill material generated
Hole and pore, improve pore structure, improve the density of filling material, and flexural strength, compression strength and freeze thawing resistance are durable
Property is excellent.
Preferably, the additional amount of multifunctional water-soluble high molecular polymer is 2.5~6.5wt% in pre-treatment step,
Stirring intensity is 140~160r/min, and mixing time is 30~40min.Pretreatment is that producing high-molecular is added into cyanogen-containing tailing
It closes object and is sent into concentration basin, stir, filters pressing obtains concentration ore pulp.Above-mentioned stirring can be continuity or intermittent operation, pressure
Filter gained clear liquid can direct emission or return process cycles use without influence technic index.Using multifunctional water-soluble macromolecule
Polymer can make the particle surface properties in hazardous waste, especially current potential, viscosity, turbidity and suspension degree change, because
The electrokinetic potential of particle surface is reduced and is agglomerated, and the strand of water soluble polymer is fixed on different particle surfaces,
The bridge of polymer is formed between each particle,
Particle is set to form collective and settle, the polar group particle on water soluble polymer molecule is to hazardous waste
In cyanide adsorbed, cyanide ion is fixed in precipitating with this, so as to subsequent further fixing operation.
Preferably, rolling mixing step are as follows: concentration ore pulp is sent into edge runner, and 19~25 weight of industrial residue is added
Part, 0.5~2.5 parts by weight of F14 exciting agent and 0.5~5 parts by weight of stabilizer carry out grinding and mix 5~15min to get mixing is arrived
Material.Further preferably, stabilizer is seven sodium of diethylene triamine pentamethylene phosphonic.Mixed material is rolled in rolling by rolling
Power, while mechanical activation, the cyanide in gold tailings can be solidificated in stabilizer lattice by stabilizer, control cyaniding
The redox potential of object makes it have indissolubility, and makes the calcium of script, silicon, aluminium ion in material by mechanism
Etc. being converted into oxidative ionic, the agent that allows to be excited carries out excitation aquation, is compacted material and volume-diminished, so that finally filling
Packing volume density greatly improves, not increase-volume, and then improves the performance of filling material.
Further preferably, industrial residue be flyash, blast-furnace cinder, metallurgical works lime-ash, red mud, volcanic ash or other
At least one of material with pozzolanic activity.
Preferably, digesting temperature in digestion step is 40~70 DEG C, the time is 2~4h.The effect of digestion mainly promotees
It into the active mineral ingredient contained in exciting agent activation modification waste residue, tailing, followed by improves into plasticity, the third is eliminating f-
The influence of CaO and f-Mgo and other factors leading to social instability.
Preferably, consolidation step are as follows: 5~15 parts by weight consolidating agents, 0.03~0.3 weight are added into digestion resulting material
After measuring part water-reducing agent and 0.22~0.32 parts by weight cementitious matter, it to be sent into edge runner and repeats grinding mixing, the grinding time is 5~
15min obtains filling material.
Further preferably, consolidating agent is hydraulic cementing materials, and cementitious matter is synthesising macromolecule copolymer.Gold tailings warp
Digestion material is obtained after the curing process of cyanide, and cementitious matter is added thereto and reinforces cementation, condenses into it with certain
The entirety of intensity can enhance the intensity of filling material after solidification, effective, safety could play the role of supporting country rock.
Preferably, including the auxiliary material that weight accounting is 0~5%, the auxiliary material during consolidation step is raw materials used
Material is with water resistant, rapid hardening, antifreeze, expansion or antiseepage effect additive.Auxiliary material, which is added, can improve the property of filling material
Can, adjusting and its strength grade of gain and working performance, so that its service life and effect be made to greatly increase.
Preferably, cyanogen-containing tailing Cyanide Leaching concentration of gained filling material after harmless treatment is less than 5.0mg/L.
CN- concentration reaches the discharge and standard of landfill of national regulation in leachate, and harmful pollutant becomes
At the substance of low-solubility, hypotoxicity and low-flow, reduce the harm of waste, not will cause underground water dirt
Dye, the cyanide also avoided in air is exceeded, not will cause secondary environmental pollution.
The invention has the benefit that
1) it is used cooperatively in the present invention using consolidating agent and cementitious matter, filling material intensity can not only be increased, eliminated wherein
The toxicity of cyanide, and enhance its freeze thawing resistance heat resistance, not increase-volume when hardening are not shunk significantly, generate stablize, low leach
The filling material of toxicity, while the usage amount of other cementitious materials can also be effectively reduced, processing cost is significantly reduced, money is saved
Source；
2) present invention is when removing the harmful substance cyanide in tailing, heavy metal cyano complex, using multi-functional water-soluble
Property high molecular polymer settled, treatment effect is stablized, and the rate of settling is high, and effect is good, big to cyanide ion capture amount, subtracts
Few loss and cost, and the four seasons can construct, the clear liquid of generation can recycle, neither influence technic index, can also reduce
Production cost reduces wastewater discharge；
3) the classes of agents dosage being added in the present invention is less, and save the cost, process flow is simple, and parameter is easy to control,
System run all right is efficient, and tailings glass ratio is flexibly adjusted, and treating capacity is big and serialization carries out, easily operated and management；
4) after gold tailings being carried out cyanide immobilization harmless treatment in the present invention, by tailing heap to Tailings Dam, no
Increase-volume, compression strength is excellent, reduces production cost and blowdown cost, avoids the secondary pollution problem of tailings impoundment, has good
Good economy, society and environmental benefit.
Present invention employs above-mentioned technical proposals to provide a kind of method for innocent treatment of cyanogen-containing tailing, compensates for existing skill
The deficiency of art, reasonable design, easy operation.
Specific embodiment
Present invention is further described in detail with reference to embodiments:
A kind of method for innocent treatment of cyanogen-containing tailing, comprising: cyanogen-containing tailing is preprocessed, rolling mixing and digestion step
Rapid fixing processing；Consolidating agent is added in immobilization treated cyanogen-containing tailing and innoxious filling is made in cementitious matter consolidation
Material；Heap is to Tailings Dam after innoxious filling material is conserved；Above-mentioned pretreatment be added into cyanogen-containing tailing it is multi-functional water-soluble
Property high molecular polymer and be sent into concentration basin, stir, filters pressing obtains concentration ore pulp.This method is capable of fixing cyanide or other are heavy
Metal ion forms insoluble or low molten mixture to weaken its toxicity, the redox potential of ion is controlled, to handle danger
Toxic and harmful gas and solable matter in dangerous waste also weaken its toxicity, recycle its in consolidating agent, cementitious matter and formula
He uses components matching, alternative traditional cement, while inside the hydrated silicate and aquation aluminate fill material generated
Hole and pore,
Pore structure is improved, the density of filling material is improved, flexural strength, compression strength and frost-proof test are excellent
It is good.
The additional amount of multifunctional water-soluble high molecular polymer is 2.5~6.5wt% in pre-treatment step, and stirring intensity is
140~160r/min, mixing time are 30~40min.Pretreatment is that high-molecular compound is added into cyanogen-containing tailing and is sent into
In concentration basin, stirring, filters pressing obtains concentration ore pulp.Above-mentioned stirring can be continuity or intermittent operation, clear liquid obtained by filters pressing
Can direct emission or return process cycles use without influence technic index.Use multifunctional water-soluble high molecular polymer can be with
The particle surface properties in hazardous waste, especially current potential, viscosity, turbidity and suspension degree is set to change, because of particle surface
Electrokinetic potential is reduced and is agglomerated, and the strand of water soluble polymer is fixed on different particle surfaces, between each particle
The bridge for forming polymer makes particle form collective and settle, the polar group particle pair on water soluble polymer molecule
Cyanide in hazardous waste is adsorbed, and cyanide ion is fixed in precipitating with this, so as to subsequent further fixing
Operation.
Rolling mixing step are as follows: concentration ore pulp is sent into edge runner, and it is sharp that 19~25 parts by weight of industrial residue, F14 is added
It sends out 0.5~2.5 parts by weight of agent and 0.5~5 parts by weight of stabilizer and carries out grinding and mix 5~15min to get mixture is arrived, it is above-mentioned
Stabilizer is seven sodium of diethylene triamine pentamethylene phosphonic.Mixed material in rolling by the grinding pressure of rolling, in mechanical activation
While, the cyanide in gold tailings can be solidificated in stabilizer lattice by stabilizer, control the redox of cyanide
Potential makes it have indissolubility, and so that the calcium of script, silicon, aluminium ion etc. in material is converted into oxidation by mechanism
Ion, the agent that allows to be excited carry out excitation aquation, are compacted material and volume-diminished, so that final filling material bulk density
It greatly improves, not increase-volume, and then improves the performance of filling material.
Industrial residue be flyash, blast-furnace cinder, metallurgical works lime-ash, red mud, volcanic ash or other with volcanic ash
At least one of active material.
It is 40~70 DEG C that temperature is digested in digestion step, and the time is 2~4h.It is living that the effect of digestion is chiefly to facilitate exciting agent
The active mineral ingredient changing modified waste residue, containing in tailing, is followed by improved into plasticity, the third is eliminate f-CaO and f-Mgo and
The influence of other factors leading to social instability.
Consolidation step are as follows: 5~15 parts by weight consolidating agents, 0.03~0.3 parts by weight diminishing are added into digestion resulting material
It after agent and 0.22~0.32 parts by weight cementitious matter, is sent into edge runner and repeats grinding mixing, the grinding time is 5~15min, is filled
Filler.
Consolidating agent is hydraulic cementing materials, and cementitious matter is synthesising macromolecule copolymer.Gold tailings are consolidated through cyanide
Digestion material is obtained after change processing, and cementitious matter is added thereto and reinforces cementation, condenses into it with one
The entirety for determining intensity can enhance the intensity of filling material after solidification, effective, safety could play support country rock
Effect.
It include the auxiliary material that weight accounting is 0~5% during consolidation step is raw materials used, the auxiliary material is with anti-
The additive that water, rapid hardening, antifreeze, expansion or antiseepage act on.Auxiliary material, which is added, can improve the performance of filling material, adjust and increase
Its beneficial strength grade and working performance, so that its service life and effect be made to greatly increase.
Cyanogen-containing tailing Cyanide Leaching concentration of gained filling material after harmless treatment is less than 5.0mg/L.In leachate
CN- concentration reaches the discharge and standard of landfill of national regulation, and harmful pollutant becomes low-solubility, hypotoxicity and low-flow
Substance, reduce the harm of waste, not will cause underground water pollution, the cyanide also avoided in air is exceeded, will not
Cause secondary environmental pollution.
Gold tailings are the Huang being deposited in after the tailing or spoil reclaming of mine discharge in Tailings Dam when gold concentrate is exploited
Gold mine tailings, or using the ore charge discharged after the concentrate that extract gold from such as cyanidation gold-extracted method.In addition to containing in gold tailings
The content of cyanide, heavy metal ion, remaining substance such as SiO2, Al2O3, CaO, MgO, K2O, Na2O, Fe2O3 is also higher.
By chemical activation and physically activated technology, the effective components such as SiO2, CaO, A12O3 that gold tailings include are added
Work is at silicate, the calcium carbonate of aluminate and generation containing active constituent for having solidification effect, the gelling property shown using it,
Obtain having the characteristics that high-strength, early strong filling material.It is used cooperatively using other compositions in consolidating agent and formula, it is alternative traditional
Cement, while the hydrated silicate and aquation aluminate fill material internal void and pore generated, improve pore structure, mention
The high density of filling material, flexural strength, compression strength and frost-proof test are excellent.Using stabilizer ionic reaction and
Chelation, by gold tailings cyanide, heavy metals immobilization in stabilizer lattice, control its redox potential, make
Existing cyanide, Cu, Ag, As etc. have indissolubility, generate the compound not leached out under stable, usual environment, no
Radgas is generated, while tailing, the pathogen in hazardous waste, virus, foul gas and organic humus can be eliminated.
In order to reach above-mentioned technical purpose, a kind of method for innocent treatment of cyanogen-containing tailing specifically includes the following steps:
1) after the multifunctional water-soluble high molecular polymer of 2.5~6.5wt% is added into cyanogen-containing tailing, it is sent into concentration basin
In, 30~40min is stirred under conditions of stirring intensity is 140~160r/min, filters pressing obtains concentration ore pulp；
2) will concentration ore pulp be sent into edge runner, and be added 19~25 parts of industrial residues, 0.5~2.5 part of F14 exciting agent and
0.5~5 part of stabilizer carries out grinding and mixes 5~15min, obtains mixture；
3) it feeding the mixture into and carries out material digestion in successive slaking silo, digestion temperature is 40~70 DEG C, the time is 2~
4h obtains digestion material；
4) 5~15 parts of consolidating agents, 0.03~0.3 part of water-reducing agent and 0.22~0.32 part of cementitious matter is added into digestion material
Afterwards, it is sent into edge runner and repeats grinding mixing, the grinding time is 5~15min, filling material is obtained, wherein the mixture of each raw material contains
The control of water rate 10~17%, penetrate into rolling on the basic phase boundary song along grain of digestion material by the active component of consolidating agent,
Activity inside material is excited, using the compound generation over-superimposed effect of multicomponent, the active component for assigning digestion material dilutes dispersion
Effect, is allowed to form polycrystalline aggregate, has the characteristics that filling material early strong, high-strength；
5) filling material is conserved, maintenance is divided into: a precuring: when temperature is higher than 10 DEG C, natural 36~60h of precuring；Temperature
Lower than 10 DEG C, damp and hot 4~10h of precuring；B steam press maintenance: the control of steam pressure operating temperature is 174~194 DEG C, and pressure control is 0.8
~1.3MPa；2~4h is preheated under the conditions of 50~70 DEG C of kettle temperature, and operating temperature, 6~8h of constant temperature are then warming up in 2.5h
Afterwards, 2~3h of cooling goes out kettle temperature difference less than 80 DEG C, conserves to filling material, and consolidating agent, cementitious matter and moisture can be made in maintenance rank
Section has suitable curing condition, so that the intensity of filling material is constantly increased with hardenability, is conducive to the condensation of filling material,
Improve compression strength；
6) filling material is toppled over into mode heap to Tailings Dam by Pipeline transport or use or is fills up to mine worked-out section.
Above-mentioned high-molecular compound is multifunctional water-soluble high molecular polymer, such as polyacrylamide, polyacrylic acid and poly-
The alkaline hydrolysis object of acrylamide, acrylamide grafted copolymer etc.；Stabilizer is seven sodium of diethylene triamine pentamethylene phosphonic；Subtract
Aqua is polycarboxylate high performance water-reducing agent or naphthalene system, melamine system, sulfamate system, acyclic superplasticizer.
Contain polyamidoimide and polyimides in above-mentioned cementitious matter, weight ratio is 3~5:2, and cementitious matter can be borrowed
Bonding between each material particles is got up, reduces intergranular pore, increases product intensity, while cementing by the characteristic for helping itself gel
Material is influenced in rolling by mechanical force activating, so that the amido bond and imide ring (- CO-NH-CO-) that are activated in polymer
Between new bridge formation arrangement occurs, to be formed, pressure resistance effect is more preferable, the stronger cross-linked structure of adhesivity, fills and blocks up
Intergranular pore is filled in, the usage amount of other materials with gelling property is effectively reduced, reduces cost, also avoid hydraulicity glue
Gel material in maintenance caused by the larger problem of curing shrinkage, while using interionic electricity coordination, with the CN- phase in tailing
Mutually absorption, form an electricity price balance stablizes entirety, is not leached wherein, is eliminated in filling material so that cyanide is fixed
The toxicity of cyanide, and freeze thawing resistance heat resistance is excellent.
Embodiment 1:
Certain gold mine sludge containing cyanogens, initial concentration 40%, water content is 55~60%, through plate and frame filter press filters pressing
Afterwards, controlling water content in Tailings Slurry is 35%, which carries out toxicity and leach detection, and leachate pollutant is exceeded, pH 12,
CNT is 157.6mg/L, Cu2+ 72.7mg/L, Fe2+ 37.9mg/L, As 1.47mg/L, Pb 1.27mg/L, other objects
Matter is micro or is not detected, and it is danger wastes that toxicity, which leaches result,.
A kind of method for innocent treatment of cyanogen-containing tailing, comprising the following steps:
1) it after the polyacrylamide of 2.5wt% is added into cyanogen-containing tailing, is sent into concentration basin, is in stirring intensity
Continuous stirring 30min under conditions of 140r/min, filters pressing obtain concentration ore pulp, and gained clear liquid returns to process cycles and uses；
2) concentration ore pulp is sent into edge runner, and 20 parts of industrial residues, 0.8 part of F14 exciting agent and 0.7 part of stabilization is added
Agent carries out grinding and mixes 5min, obtains mixture；
3) it feeds the mixture into and carries out material digestion in successive slaking silo, digestion temperature is 40 DEG C, and time 2h is obtained
Digestion material；
4) after 5 parts of consolidating agents, 0.09 part of poly carboxylic acid series water reducer and 0.22 part of cementitious matter being added into digestion material, it is sent into wheel
Mill repeats grinding mixing, and the grinding time is 5min, filling material is obtained, wherein the mixture moisture control of each raw material exists
11%, the weight ratio of the polyamidoimide and polyimides that contain in above-mentioned cementitious matter is 3.5:2；
5) filling material is conserved, maintenance is divided into: a precuring: when temperature is higher than 10 DEG C, natural precuring 40h；Temperature is lower than
10 DEG C, damp and hot precuring 4h；B steam press maintenance: the control of steam pressure operating temperature is 175.5 DEG C, and pressure control is 0.9MPa；At 54 DEG C
2.5h is preheated under the conditions of kettle temperature, is then warming up to operating temperature in 2.5h, and after constant temperature 6.5h, cooling 2.5h goes out kettle temperature difference and is less than
80℃；
6) filling material is toppled over into mode heap to Tailings Dam by Pipeline transport or use or is fills up to mine worked-out section.
The intensity of filling material is 19MPa after maintenance, carries out toxicity to filling material and leaches detection, as a result as follows: CN- leaches dense
Degree is 2.89mg/L, Cu2+ 0.77mg/L, Fe2+ 0.49mg/L, As 0.45mg/L, Pb 0.68mg/L, other substances
It is micro or be not detected.Illustrate the tailing after harmless treatment, cyanide has obtained abundant fixation, filling material category in filling material
In general solid waste, accumulation processing or filling mine are all feasible, safe.
Embodiment 2:
A kind of method for innocent treatment of cyanogen-containing tailing, advanced optimizes that steps are as follows:
1) it after the polyacrylamide of 5.3wt% is added in the cyanogen-containing tailing of certain gold mine into embodiment 1, adds mixed
Solidifying agent, is sent into concentration basin, continuous stirring 35min under conditions of stirring intensity is 160r/min, and filters pressing obtains concentration mine
Slurry, gained clear liquid return to process cycles and use, and the additive amount of above-mentioned coagulant is the 0.04% of polyacrylamide weight, wherein two
The weight ratio of methylacetamide and p-aminobenzoic acid is 4.5:2, the flocculating setting of the addition of coagulant to high-molecular compound
Gain is acted on, and utilizes its thermal stability and uvioresistant oxidability in infall process, reduces high-molecular compound
Temperature sensitivity, inhibit high-molecular compound generate free radical, avoid high-molecular compound from degrading, promoted sedimentation imitates
Fruit, and the four seasons can construct, and reduce loss and cost, while to send out between amido bond and carboxyl functional group using mechanical shearing
Raw build bridge is coupled, and forms the linear long-chain more stretched, and molecule chain growth and the abundant effective active group for exposing carboxyl increase
By force to the capture of water-soluble heavy metal ion and adsorption capacity, it is translated into inactive form, increase the rate of settling and is caught
The amount of catching carries out process efficient, a large amount of and serialization；
2) concentration ore pulp is sent into edge runner, and 20 parts of industrial residues, 0.8 part of F14 exciting agent and 0.7 part of stabilization is added
Agent carries out grinding and mixes 5min, obtains mixture；
3) it feeds the mixture into and carries out material digestion in successive slaking silo, digestion temperature is 40 DEG C, and time 2h is obtained
Digestion material；
4) after 5 parts of consolidating agents, 0.09 part of poly carboxylic acid series water reducer and 0.22 part of cementitious matter being added into digestion material, it is sent into wheel
Mill repeats grinding mixing, and the grinding time is 5min, filling material is obtained, wherein the mixture moisture control of each raw material exists
11%, the weight ratio of the polyamidoimide and polyimides that contain in above-mentioned cementitious matter is 3.5:2；
5) filling material is conserved, maintenance is divided into: a precuring: when temperature is higher than 10 DEG C, natural precuring 40h；Temperature is lower than
10 DEG C, damp and hot precuring 4h；B steam press maintenance: the control of steam pressure operating temperature is 175.5 DEG C, and pressure control is 0.9MPa；At 54 DEG C
2.5h is preheated under the conditions of kettle temperature, is then warming up to operating temperature in 2.5h, and after constant temperature 6.5h, cooling 2.5h goes out kettle temperature difference and is less than
80℃；
6) mine or mine worked-out section are fills up to by filling material by Pipeline transport or using mode is toppled over.
The intensity of filling material material is 19MPa after maintenance, carries out toxicity to filling material and leaches detection, as a result as follows: CN- leaching
Out concentration be 0.49mg/L, Cu2+ 0.32mg/L, Fe2+ 0.12mg/L, As 0.33mg/L, Pb 0.21mg/L, other
It is not detected.Illustrate the tailing after harmless treatment, the cyanide originated in tailing is substantially completely fixed in filling material, is filled
Filler belongs to general solid waste, and accumulation processing or filling mine are all feasible, safe.
Embodiment 3:
A kind of method for innocent treatment of cyanogen-containing tailing, comprising the following steps:
1) after the polyacrylamide of 4.5wt% is added in the cyanogen-containing tailing of certain gold mine into embodiment 1, it is sent into concentration
Chi Zhong, continuous stirring 40min under conditions of stirring intensity is 150r/min, filters pressing obtain concentration ore pulp, and gained clear liquid returns
Process cycles are returned to use；
2) concentration ore pulp is sent into edge runner, and 21 parts of industrial residues, 1.4 parts of F14 exciting agents and 1.7 parts of stabilizations is added
Agent carries out grinding and mixes 9min, obtains mixture；
3) it feeds the mixture into and carries out material digestion in successive slaking silo, digestion temperature is 53 DEG C, and time 3.5h is obtained
Expect to digestion；
4) after 12 parts of consolidating agents, 0.11 part of water-reducing agent and 0.22 part of cementitious matter being added into digestion material, it is sent into edge runner weight
Multiple grinding mixing, the grinding time is 9min, obtains filling material, wherein the mixture moisture control of each raw material is 16%, it is above-mentioned
The weight ratio of the resin, polyamidoimide and the polyimides that contain in cementitious matter is 1:0:0；
5) filling material is conserved, maintenance is divided into: a precuring: when temperature is higher than 10 DEG C, natural precuring 46h；Temperature is lower than
10 DEG C, damp and hot precuring 8h；B steam press maintenance: the control of steam pressure operating temperature is 183 DEG C, and pressure control is 1.2MPa；In 68 DEG C of kettle
3.5h is preheated under the conditions of temperature, is then warming up to operating temperature in 2.5h, and after constant temperature 7.5h, cooling 2.5h goes out kettle temperature difference less than 80
℃；
6) filling material is toppled over into mode heap to Tailings Dam by Pipeline transport or use or is fills up to mine worked-out section.
The intensity of filling material is 16MPa after maintenance, carries out toxicity to filling material and leaches detection, as a result as follows: CN- leaches dense
Degree is 3.92mg/L, and Cu2+ 0.64mg/L, Fe2+ 0.54mg/L, As 0.33mg/L, Pb 0.53mg/L, other are not examined
Out.Illustrate the tailing after harmless treatment, polyamidoimide is not added with when filling material is made, in cementitious matter and polyamides is sub-
The intensity of amine, made filling material significantly reduces, and the leaching concentration of cyanide is also risen, and made filling material belongs to one
As solid waste, accumulation processing or filling mine it is all feasible, safety.
Embodiment 4:
A kind of method for innocent treatment of cyanogen-containing tailing, comprising the following steps:
1) after the polyacrylamide of 4.6wt% is added in the cyanogen-containing tailing of certain gold mine into embodiment 1, it is sent into concentration
Chi Zhong, continuous stirring 38min under conditions of stirring intensity is 160r/min, filters pressing obtain concentration ore pulp, and gained clear liquid returns
Process cycles are returned to use；
2) concentration ore pulp is sent into edge runner, and 24 parts of industrial residues, 2.2 parts of F14 exciting agents and 3.6 parts of stabilizations is added
Agent carries out grinding and mixes 12min, obtains mixture；
3) it feeds the mixture into and carries out material digestion in successive slaking silo, digestion temperature is 64 DEG C, and time 3h is obtained
Digestion material；
4) it after 8 parts of consolidating agents, 0.13 part of water-reducing agent and 0.28 part of cementitious matter being added into digestion material, is sent into edge runner and repeats
Grinding mixing, grinding time are 12min, obtain filling material, wherein the mixture moisture control of each raw material is 13%, above-mentioned glue
The weight ratio of the polyamidoimide and polyimides that contain in ramming material is 4.3:2；
5) filling material is conserved, maintenance is divided into: a precuring: when temperature is higher than 10 DEG C, natural precuring 54h；Temperature is lower than
10 DEG C, damp and hot precuring 7h；B steam press maintenance: the control of steam pressure operating temperature is 192 DEG C, and pressure control is 1.1MPa；In 63 DEG C of kettle
3h is preheated under the conditions of temperature, is then warming up to operating temperature in 2.5h, and after constant temperature 7h, cooling 3h goes out kettle temperature difference less than 80 DEG C；
6) filling material is toppled over into mode heap to Tailings Dam by Pipeline transport or use or is fills up to mine worked-out section.
The intensity of filling material is 20MPa after maintenance, carries out toxicity to filling material and leaches detection, as a result as follows: CN- leaches dense
Degree is 1.79mg/L, and Cu2+ 0.64mg/L, Fe2+ 0.75mg/L, As 0.54mg/L, Pb 0.35mg/L, other are not examined
Out.Illustrate the tailing after harmless treatment, cyanide has obtained abundant fixation in filling material, and filling material belongs to general solid
Waste, accumulation processing or filling mine are all feasible, safe.
Embodiment 5:
A kind of method for innocent treatment of cyanogen-containing tailing, comprising the following steps:
1) after the polyacrylamide of 6.2wt% is added in the cyanogen-containing tailing of certain gold mine into embodiment 1, it is sent into concentration
Chi Zhong, continuous stirring 40min under conditions of stirring intensity is 140r/min, filters pressing obtain concentration ore pulp, and gained clear liquid returns
Process cycles are returned to use；
2) concentration ore pulp is sent into edge runner, and 24 parts of industrial residues, 2.2 parts of F14 exciting agents and 3.6 parts of stabilizations is added
Agent carries out grinding and mixes 12min, obtains mixture；
3) it feeds the mixture into and carries out material digestion in successive slaking silo, digestion temperature is 64 DEG C, and time 3h is obtained
Digestion material；
4) it after 8 parts of consolidating agents, 0.13 part of water-reducing agent and 0.28 part of cementitious matter being added into digestion material, is also accounted for added with weight
Silicic acid bases accelerator than 2.6% is sent into edge runner and repeats grinding mixing, and the grinding time is 12min, obtains filling material,
In each raw material the weight of polyamidoimide and polyimides that contains in 13%, above-mentioned cementitious matter of mixture moisture control
Amount is than being 4.3:2；
5) filling material is conserved, maintenance is divided into: a precuring: when temperature is higher than 10 DEG C, natural precuring 48h；Temperature is lower than
10 DEG C, damp and hot precuring 9h；B steam press maintenance: the control of steam pressure operating temperature is 185 DEG C, and pressure control is 1.1MPa；In 58 DEG C of kettle
3.25h is preheated under the conditions of temperature, is then warming up to operating temperature in 2.5h, and after constant temperature 7h, cooling 3h goes out kettle temperature difference less than 80 DEG C；
6) filling material is toppled over into mode heap to Tailings Dam by Pipeline transport or use or is fills up to mine worked-out section.
The intensity of filling material is 20.5MPa after maintenance, carries out toxicity to filling material and leaches detection, as a result as follows: CN- is leached
Concentration is 1.92mg/L, and Cu2+ 0.97mg/L, Fe2+ 0.76mg/L, As 0.43mg/L, Pb 0.37mg/L, other are not
Detection.Illustrate that the tailing after harmless treatment, auxiliary material is added during filling material is made, filling material can be improved
The intensity of material, but the intensity requirement of made filling material is less than common buildings material, so in actual production it is contemplated that few
Add or be not added, with save the cost, made filling material belongs to general solid waste, and accumulation processing or filling mine are all feasible, pacify
Entirely.
Multifunctional water-soluble high molecular polymer should also include polyacrylamide, polyacrylic acid and polyacrylamide in the present invention
Alkaline hydrolysis object, acrylamide grafted copolymer, amphiprotic polyacrylamide polymer, the quaternized polyacrylamide or benzene of amine
At least one of copolymers such as vinyl sulfonate, ligninsulfonate, acrylic acid, methacrylic acid；Contain polyamide in cementitious matter
The weight ratio of acid imide and polyimides is not limited only to 3~5:2, should also include 3:2 or 3.1:2 or 3.2:2 or 3.3:2 ... or
4.8:2 or 4.9:2 or 5:2；The auxiliary material weight accounting for including in filling material is not limited only to 0~5%, should also include 0% or
0.1% or 0.2% or 0.3% or 0.4% ... or 4.8% or 4.9% or 5.0%.
The prior art of routine techniques dawn known to those skilled in the art in above-described embodiment, therefore herein no longer in detail
It repeats.
The above embodiments are only used to illustrate the present invention, and not limitation of the present invention, the ordinary skill people of this field
Member can also make a variety of changes and modification without departing from the spirit and scope of the present invention.Therefore, all equivalent
Technical solution also belong to scope of the invention, scope of patent protection of the invention should be defined by the claims.
Claims (10)
1. a kind of method for innocent treatment of cyanogen-containing tailing, it is characterised in that: including,
Cyanogen-containing tailing is preprocessed, rolling mixing and the processing of fixing of digestion step；
Consolidating agent is added in the immobilization treated cyanogen-containing tailing and innoxious filling material is made in cementitious matter consolidation；
Heap is to Tailings Dam after the innoxious filling material is conserved；
The pretreatment is that multifunctional water-soluble high molecular polymer is added into cyanogen-containing tailing and is sent into concentration basin, is stirred,
Filters pressing obtains concentration ore pulp.
2. a kind of method for innocent treatment of cyanogen-containing tailing according to claim 1, it is characterised in that: the pretreatment step
The additional amount of multifunctional water-soluble high molecular polymer is 2.5 ~ 6.5wt% in rapid, and stirring intensity is 140 ~ 160r/min, stirring
Time is 30 ~ 40min.
3. a kind of method for innocent treatment of cyanogen-containing tailing according to claim 1, it is characterised in that: the rolling mixing
Step are as follows: concentration ore pulp is sent into edge runner, and 19 ~ 25 parts by weight of industrial residue, 0.5 ~ 2.5 parts by weight of F14 exciting agent are added
Grinding 5 ~ 15min of mixing is carried out with 0.5 ~ 5 parts by weight of stabilizer to get mixture is arrived.
4. a kind of method for innocent treatment of cyanogen-containing tailing according to claim 3, it is characterised in that: the stabilizer is
Seven sodium of diethylene triamine pentamethylene phosphonic.
5. a kind of method for innocent treatment of cyanogen-containing tailing according to claim 3, it is characterised in that: the industrial residue
For in flyash, blast-furnace cinder, metallurgical works lime-ash, red mud, volcanic ash or other materials with pozzolanic activity extremely
Few one kind.
6. a kind of method for innocent treatment of cyanogen-containing tailing according to claim 1, it is characterised in that: the digestion step
Middle digestion temperature is 40 ~ 70 DEG C, and the time is 2 ~ 4h.
7. a kind of method for innocent treatment of cyanogen-containing tailing according to claim 1, it is characterised in that: the consolidation step
Are as follows: 5 ~ 15 parts by weight consolidating agents, 0.03 ~ 0.3 parts by weight water-reducing agent and 0.22 ~ 0.32 parts by weight are added into digestion resulting material
It after cementitious matter, is sent into edge runner and repeats grinding mixing, the grinding time is 5 ~ 15min, obtains filling material.
8. a kind of method for innocent treatment of cyanogen-containing tailing according to claim 7, it is characterised in that: the consolidating agent is
Hydraulic cementing materials, cementitious matter are synthesising macromolecule copolymer.
9. a kind of method for innocent treatment of cyanogen-containing tailing according to claim 1 or claim 7, it is characterised in that: the consolidation
During step is raw materials used include weight accounting be 0 ~ 5% auxiliary material, the auxiliary material be with water resistant, rapid hardening, it is antifreeze,
The additive of expansion or antiseepage effect.
10. the method for innocent treatment of described in any item a kind of cyanogen-containing tailings according to claim 1 ~ 9, it is characterised in that: institute
It states cyanogen-containing tailing Cyanide Leaching concentration of gained filling material after harmless treatment and is less than 5.0mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110240458A (en) * | 2019-07-04 | 2019-09-17 | 安徽固维特材料科技有限公司 | A kind of tailing solidifying agent for low temperature environment and preparation method thereof, application method |
| CN113231442A (en) * | 2021-05-08 | 2021-08-10 | 南宁市城乡规划设计研究院有限公司 | Aluminum tailing slag improvement method based on ion exchange and crosslinking reaction |
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| US3859799A (en) * | 1973-01-23 | 1975-01-14 | Dravo Corp | Landfill disposal of power plant wastes |
| CN107488019A (en) * | 2017-09-12 | 2017-12-19 | 宁波纯恒固废科技有限公司 | A kind of non-sintered gold tailings brick and its preparation technology |
| CN107716516A (en) * | 2017-10-31 | 2018-02-23 | 长春黄金研究院 | A kind of cyanide minimizing technology of cyanidation tailings |
| CN108298718A (en) * | 2018-01-31 | 2018-07-20 | 辽宁工程技术大学 | A kind of integrated conduct method of sludge containing cyanogens |
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| US3859799A (en) * | 1973-01-23 | 1975-01-14 | Dravo Corp | Landfill disposal of power plant wastes |
| CN107488019A (en) * | 2017-09-12 | 2017-12-19 | 宁波纯恒固废科技有限公司 | A kind of non-sintered gold tailings brick and its preparation technology |
| CN107716516A (en) * | 2017-10-31 | 2018-02-23 | 长春黄金研究院 | A kind of cyanide minimizing technology of cyanidation tailings |
| CN108298718A (en) * | 2018-01-31 | 2018-07-20 | 辽宁工程技术大学 | A kind of integrated conduct method of sludge containing cyanogens |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240458A (en) * | 2019-07-04 | 2019-09-17 | 安徽固维特材料科技有限公司 | A kind of tailing solidifying agent for low temperature environment and preparation method thereof, application method |
| CN110240458B (en) * | 2019-07-04 | 2021-07-16 | 安徽固维特材料科技有限公司 | Tailing curing agent for low-temperature environment and preparation method and use method thereof |
| CN113231442A (en) * | 2021-05-08 | 2021-08-10 | 南宁市城乡规划设计研究院有限公司 | Aluminum tailing slag improvement method based on ion exchange and crosslinking reaction |
| CN113231442B (en) * | 2021-05-08 | 2022-05-24 | 南宁市城乡规划设计研究院有限公司 | Aluminum tailing slag improvement method based on ion exchange and crosslinking reaction |
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