CN107561248A - A kind of coal gangue hill high-temperature area rainfall leaching analogue experiment installation and experimental method - Google Patents
A kind of coal gangue hill high-temperature area rainfall leaching analogue experiment installation and experimental method Download PDFInfo
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- CN107561248A CN107561248A CN201710938133.7A CN201710938133A CN107561248A CN 107561248 A CN107561248 A CN 107561248A CN 201710938133 A CN201710938133 A CN 201710938133A CN 107561248 A CN107561248 A CN 107561248A
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Abstract
The invention discloses a kind of coal gangue hill high-temperature area rainfall leaching analogue experiment installation, belong to rainfall leaching simulating experiment technique field, including heating temperature-control system, quartz material leaching system, quantitative controllable spray system, system for detecting temperature, Filtrate collection device, gas collector, air blast device and stainless steel frame.The apparatus structure is compact, and column integral demounting can be achieved.Quartz material leaching its exterior wraps up heating temperature-control system, and the quantitative controllable spray system of aluminium oxide ceramics heat-insulating plug connection and gas collector are set at the top of quartzy leaching pipe, and bottom sets quartzy filtrate collecting tank connection air to blast device and Filtrate collection device.The invention also discloses coal gangue hill high-temperature area rainfall leaching analogue experiment method, by installing rainfall leaching analogue experiment installation, carry out simulated rainfall leaching, detection and analysis gained leaching liquor and toxic and harmful gas indices, research coal gangue hill high temperature natural region pollutant leaching release rule.
Description
Technical field
The present invention relates to rainfall leaching simulating experiment technique field, is especially a kind of coal gangue hill high-temperature area rainfall leaching
Molten analogue experiment installation and experimental method.
Background technology
Gangue is the gangue mineral that coal discharges in digging and washing process, accounts for the 15%~20% of producing coal amount, is tired out
Volume of cargo in storage is counted more than 4,000,000,000 tons, as the maximum industrial solid castoff in China[1], gangue is mainly with gangue chevron
Formula carries out outdoor stockpiling disposal.Coal gangue hill through long-time stockpiling can occur oxidation and spontaneous combustion in addition explode, into air discharge CO,
H2S、SO2And NOxDeng toxic and harmful gas；Under rainfall eluviation, leaching liquor, which flows through gangue massif and penetrates into underground, to be made
It is exceeded into body of groundwater acid pollution and content of beary metal.
The pyrite of association is the primary pollution source that its stockpiling causes environmental pollution in gangue.Pyrite has very strong
Chemical reactivity, slowly aoxidized after adsorption of oxygen under normal temperature condition, the circular regeneration trivalent when having water and microorganism coexists
Iron ion, promote the increase of troilite oxidizing reaction rate[2], while discharge and accumulate amount of heat, when coal gangue hill internal heat
When accumulating the ignition point of combustible, spontaneous combustion occurs for gangue, and internal maximum temperature is up to 800 DEG C.Gangue is percolated with rainfall
When liquid chemically reacts, react the acid product of generation and soluble heavy metal salt dissolves in percolate, form Acid mine and give up
Water (AMD), acidic mine waste water eventually enter into periphery or body of groundwater after permeating whole spoil massif, cause water pollution.For
Alleviate or thoroughly administer coal gangue hill long-term stockpiling and environment is damaged, different improvement need to be taken for the old and new's coal gangue hill
Measure.Fire extinguishing processing is substantially carried out for old spontaneous combus tion of waste heap area, it is main to include directly cutting out method, grouting surface or internal envelope
Deposit, douche and compacting etc.[3]；New hillock is mainly handled using the sealing stockpiling mode of layered rolling, covering stockpiling, is controlled
Reason effect directly stores up the spontaneous combustion that significantly, can slow down gangue and acid contaminant release compared with gangue.For it is efficient, economical,
Scientifically monitoring coal gangue hill stores up the index situations of change of process various pollutants for a long time, grasp gangue oxidation rate and
Temperature changing regularity, prediction different regions, variety classes gangue are stored up pollution potential size and reached in contamination index for a long time
Possible time and space nodes are limited, it is necessary to carry out rainfall leaching simulated test to the coal gangue hill of scene stockpiling.
Column leaching is tested closest with scene stockpiling rainfall leaching condition[4].Existing research method mainly utilizes poly- second
The leaching post of alkene or lucite material, rainfall leaching simulated test is carried out to gangue at ambient temperature.It is main to produce coal
Stripping law of the trace element under the conditions of different stockpiling leaching factor levels in spoil.Because the experiment of current leaching mainly exists
Carried out under normal temperature condition, pyrite and the reaction of other sulfide are slow in gangue, it is impossible to fully oxidized production acid, experiment gained coal
The aobvious neutral or alkalescent of spoil leaching liquor pH value, this stores up rainfall leaching liquor with coal gangue hill and is not consistent in acidity for a long time, therefore,
Normal temperature leaching result of the test can not play directive function to gangue scene stockpiling pollutant release prediction and improvement.For the palm comprehensively
Hold coal gangue hill different temperatures region, the especially release rule of high temperature spontaneous combustion region pollutant under rainfall eluviation, it is necessary to
A kind of experimental provision to carry out rainfall leaching simulated test to coal gangue hill core high-temperature area.
The content of the invention
To overcome existing normal temperature column leaching experiment can not study self-ignition coal gangue hill high-temperature area pollutant release rule
The deficiency of rule, the technical problems to be solved by the invention there is provided a kind of coal gangue hill high-temperature area rainfall leaching simulated experiment
Device.The apparatus structure is compact, reasonable in design, can realize material column integral demounting.By setting intelligent heating temperature control system
System and quartz material leaching system, gangue stockpiling body in leaching post can be given to provide 700 DEG C of high temperature, simulate live gangue
Mountain spontaneous combustion high-temperature area environment；By setting quantitative controllable spray system, varying strength and the atmospheric precipitation of acidity can be simulated
Leaching condition；By setting temperature detection record system, the temperature data at gangue stockpiling body diverse location, the palm can be gathered
Hold the thermo parameters method and changing rule of stockpiling body.By setting Filtrate collection device and gas collector, coal can be derived that
Spoil stockpiling leaching discharges pollutant in gas phase and the distribution situation of liquid phase；By setting air to blast device, it can quantify and grind
Study carefully influence of the different oxygen content to pollutant in gangue.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of coal gangue hill high-temperature area rainfall leaching
Molten analogue experiment installation, it is characterised in that：Including heating temperature-control system, quartz material leaching system, quantitative controllable spray system,
System for detecting temperature, Filtrate collection device, gas collector, air blast device and stainless steel frame；The heating temperature control
System includes red ceramic Electrothermal ring, digital display temperature-control case, compressed spring type thermocouple；The quartz material leaching system includes quartz
Leaching pipe, aluminium oxide ceramics heat-insulating plug, Quick hoop, quartzy filtrate collecting tank, adjustable chuck, fixed chuck；It is described quantitatively
Controlling spray system includes leaching liquid storage bottle, peristaltic pump, drip irrigation emitter；The system for detecting temperature includes K-type thermocouple and Duo Tong
Channel temp recorder；The Filtrate collection device includes sealing valve, punching rubber stopper, filtrate receiving flask, U-shaped drying tube；Gas
Body collection device is aluminium foil gas production bag；Air, which blasts device, includes glass rotameter and electromagnetic air pump.
A kind of above-mentioned coal gangue hill high-temperature area leaching analogue experiment installation, it is characterised in that：The red ceramic electricity adds
The quartzy leaching pipe of gas ket and periphery parcel aluminium-foil paper protective layer is fixed by lock ring bolt, is placed on the adjustable chuck
On, adjust lower nut on adjustable chuck and tighten position to set the vertical height of red ceramic Electrothermal ring；The digital display temperature-control
Case is placed on inside the stainless steel frame；The compressed spring type thermocouple binding post is connected with the digital display temperature-control case input,
Compressed spring type thermocouple probe contacts survey through patchhole among the red ceramic Electrothermal ring with the quartzy leaching pipe surface
Temperature.
A kind of above-mentioned coal gangue hill high-temperature area leaching analogue experiment installation, it is characterised in that：The quartzy leaching pipe edge
Axial four thief holes of equidistant placement；The quartzy leaching pipe bottom parcel high temperature resistant silicon offset plate and Quick hoop top connection interference
Coordinate, the Quick hoop top connection bottom is flushed with quartzy leaching pipe bottom, and quartzy leaching pipe is held in the mouth with Quick hoop top connection
Smear fire protection flame retarding glue and sealed in the place of connecing；The adjustable chuck is nested in the Quick hoop top connection outer, adjustable chuck
Internal diameter is identical with Quick hoop top connection top external diameter；The Quick hoop top connection and Quick hoop lower contact are close by silica gel
Seal is sealed, and Quick hoop top connection is tightened with cutting ferrule with Quick hoop lower contact and is connected；The quartzy filtrate collecting tank flange
Diameter is identical with through hole silica gel ring hole clipping diameter, and the through hole silica gel ring was carried out with quartzy filtrate collecting tank upper end column part
It is full of cooperation, quartzy filtrate collecting tank flange bottom and through hole silica gel ring hole clipping tip contact；The Quick hoop lower contact is with leading to
Hole silica gel ring is interference fitted, and Quick hoop lower contact top flushes with through hole silica gel ring edge；The quartzy filtrate is collected
Gap is sealed by smearing fire protection flame retarding glue between groove and Quick hoop lower contact；The Quick hoop lower contact is nested in
Inside the fixed chuck, fixed chuck internal diameter is identical with Quick hoop lower contact top external diameter；The fixed chuck with it is adjustable
Chuck is fixed on stainless steel frame panel by bolt hole.
A kind of above-mentioned coal gangue hill high-temperature area leaching analogue experiment installation, it is characterised in that：The quartzy filtrate is collected
Trench bottom leakage fluid dram is connected by rubber hose with sealing valve input, and the sealing valve output is by punching rubber stopper
Inlet opening is tightly connected with filtrate receiving flask, and the punching rubber stopper steam vent is connected by rubber hose with U-shaped drying tube, U
Soda lime drier is filled in type drying tube, for removing contained CO in air2, prevent CO2Leaching liquor is dissolved in cause pH indexs
Influence.
A kind of above-mentioned coal gangue hill high-temperature area leaching analogue experiment installation, it is characterised in that：The quartzy filtrate is collected
Groove side air admission hole is connected with glass rotameter exhaust port by appendix, and the glass rotameter controls air inlet
Amount scope is 6~60ml/min；The glass rotameter air inlet port is connected with electromagnetic air pump by appendix；Institute
State electromagnetic air pump and wind regime is provided, maximum capacity is 40L/min.
A kind of above-mentioned coal gangue hill high-temperature area leaching analogue experiment installation, it is characterised in that：The quartzy leaching tube top
Portion sets aluminium oxide ceramics heat-insulating plug to be sealed；The K-type thermocouple probe is inserted through aluminium oxide ceramics heat-insulating plug positioning hole
Enter material inside specified location, K-type thermocouple binding post in quartzy leaching pipe to be connected with multichannel temperature recorder, it is described more logical
Channel temp recorder is used for the temperature change for recording specified location inside material in quartz ampoule；The aluminium oxide ceramics heat-insulating plug edge
Axis is equally spaced 6 positioning holes；Gap is anti-by smearing between K-type thermocouple and aluminium oxide ceramics the heat-insulating plug positioning hole
Fiery fire retardant glue is sealed.
A kind of above-mentioned coal gangue hill high-temperature area leaching analogue experiment installation, it is characterised in that：The leaching liquid storage bottle leads to
Cross rubber hose to be connected with peristaltic pump input, the peristaltic pump flow adjustment range is 0~100ml/min；The peristaltic pump
Output end is connected by rubber hose with drip irrigation emitter, and the drip irrigation emitter is fixed on aluminium oxide ceramics heat-insulating plug inlet opening,
Gap is sealed by smearing fire protection flame retarding glue between drip irrigation emitter and aluminium oxide ceramics heat-insulating plug inlet opening.
A kind of above-mentioned coal gangue hill high-temperature area leaching analogue experiment installation, it is characterised in that：The aluminium foil gas production bag enters
Connected between stomata and aluminium oxide ceramics heat-insulating plug steam vent by appendix, the aluminium oxide ceramics heat-insulating plug steam vent with it is defeated
Gap is sealed by smearing fire protection flame retarding glue between tracheae.
In addition, the present invention also provides one kind carries out the simulation of gangue high-temperature area rainfall leaching in fact using using said apparatus
The method tested, it is characterised in that：Comprise the following steps：
Step 1: assembling quartz material leaching system：Set between Quick hoop top connection and silica gel sealing ring stainless
Steel filter screen, play a part of supporting material, quartzy leaching pipe side wall thief hole is blocked with aluminium oxide ceramics plug, detection leaching system
The sealing of system；
Step 2: the charge material into sealing good quartz material leaching system, quartzy leaching pipe periphery parcel aluminium
Foil paper protective layer, additional red ceramic Electrothermal ring, regulation adjustable chuck set the vertical height of red ceramic Electrothermal ring；
Step 3: with aluminium oxide ceramics heat-insulating plug to being sealed at the top of quartzy leaching pipe, K-type thermocouple passes through aluminum oxide
Ceramic insulation plug positioning hole is embedded in quartzy leaching pipe setting position, connects temperature detection record system, quantitative controllable spray
Leaching system, air blast device, Filtrate collection device and air collecting device；
Step 4: setting simulation coal gangue hill high-temperature area specified temp by digital display temperature-control case, wriggling pump discharge is adjusted
Spraying intensity, regulation glass rotameter setting aeration quantity are set, parameter setting carries out high-temperature area leaching simulation after terminating
Experiment；
Step 5: leaching liquor obtained by during collecting simulated experiment respectively as Filtrate collection device and gas collector
With toxic and harmful gas, and the indices of leaching liquor and toxic and harmful gas are detected；
Step 6: simulated eluviation experiment is taken in different time stage and different stockpiling positions by quartzy leaching pipe thief hole
The coal gangue sample at place is put, detects the physico-chemical property of coal gangue sample；
Step 7: after simulated eluviation experiment terminates, close successively and dismantle quantitatively controllable spray system, air blasts dress
Put, intelligent heating temperature control system, temperature detection record system, Filtrate collection device, gas collector and quartz material leaching
System, and column entirety discharging is carried out to stockpiling in quartzy leaching pipe, the material of specified temp field different zones is carried out
Sampling detection, the front and rear physico-chemical property change of analysis gangue reaction.
The present invention has advantages below compared with prior art：
1st, gangue high-temperature area rainfall leaching analogue experiment installation of the present invention uses integrated design, compact-sized, if
Meter is reasonable, and assembly and disassembly is convenient.
2nd, the present invention is controllable by setting red ceramic Electrothermal ring to carry out heating simulated eluviation experiment to quartzy leaching pipe
Heated perimeter is between 0~700 DEG C, using the teaching of the invention it is possible to provide the simulated eluviation experiment condition in self-ignition coal gangue hill different temperatures region.
3rd, the present invention can realize stockpiling in quartzy leaching pipe by setting detachable quartz material leaching system
Column entirety discharging；Leaching system uses quartz material, and high temperature resistant, acid-alkali-corrosive-resisting, chemical stability is strong, can in leaching process
It is good depending on performance；
4th, the present invention is detected and recorded in quartzy leaching pipe at diverse location by setting temperature detection record system in real time
Temperature variations, draw the thermo parameters method under different heating working condition.
5th, the quantitative controllable spray system of gangue high-temperature area rainfall leaching analogue experiment installation of the present invention simulates certainly
Rainfall is fired, by adjusting peristaltic pump flow set difference spraying intensity.
6th, the present invention uses aluminium oxide ceramics plug plug for seal by setting quartzy leaching pipe thieff hatch in leaching process,
Leaching removes plug after terminating and takes sample, can realize that carrying out coal gangue sample in leaching pipe internal timing, fixed point takes inspection
Survey, reflect physico-chemical property changing rule of the gangue during high temperature leaching simulated experiment in real time.
7th, the present invention is by setting air to blast device, there is provided the aeration quantity of varying strength, can study gangue not
With the pollutant during the lower high temperature leaching simulated experiment of aeration condition.
8th, the present invention is by setting fluid collection device and gas collector, during can collecting simulated experiment simultaneously
Gained leaching liquor and toxic and harmful gas, Indexs measure is carried out, and then being capable of quantitative analysis gangue high temperature simulated eluviation reality
Test distribution situation of the discharged pollutant in gas-solid-liquid three-phase.
9th, using apparatus and method of the present invention can more true simulation gangue high-temperature area rainfall leaching process,
The thermo parameters method situation in simulation gangue high temperature spontaneous combustion region can be detected in real time, collected and analyzed the leaching of gangue High Temperature Simulation
Molten gained leachate and the toxic and harmful gas indices of release.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the sectional view that the quartz material leaching system of the present invention passes through axis.
Fig. 3 is the partial enlarged drawing of the quartz material leaching system of the present invention.
Fig. 4 is the aluminium oxide ceramics heat-insulating plug layout position illustration of the present invention.
Description of reference numerals：
1-1-red ceramic Electrothermal ring；1-2-digital display temperature-control case；1-3-compressed spring type thermocouple；
2-1-quartzy leaching pipe；2-2-aluminium oxide ceramics heat-insulating plug；2-2-1-aluminium oxide ceramics heat-insulating plug inlet opening；
2-2-2-aluminium oxide ceramics heat-insulating plug positioning hole；2-2-3-aluminium oxide ceramics heat-insulating plug steam vent；2-3-fast
Be loaded hoop；
2-3-1-Quick hoop top connection；2-3-2-Quick hoop lower contact；2-3-3-silica gel sealing ring；
2-3-4-Quick hoop cutting ferrule；2-4-quartzy filtrate collecting tank 2-5-adjustable chuck；
2-6-fixation chuck；2-7-through hole silica gel ring；2-8-high temperature resistant silicon offset plate；
2-9-stainless steel filtering net；3-1-sealing valve；3-2-punching rubber stopper；
3-3-filtrate receiving flask；3-4-U-shaped drying tube；4-1-spinner flowmeter；
4-2-electromagnetic air pump；5-1-K-type thermocouple；5-2-multichannel temperature recorder；
6-1-leaching liquid storage bottle；6-2-peristaltic pump；6-3-drip irrigation emitter；
7-aluminium foil gas production bag；8-stainless steel frame；9-1-quartz sand；
9-2-gangue.
Embodiment
Illustrate gangue high-temperature area rainfall leaching analogue experiment installation and experimental method with reference to accompanying drawing 1, Fig. 2, Fig. 3, Fig. 4
A kind of embodiment.
As shown in figure 1, the gangue high-temperature area rainfall leaching analogue experiment installation of the present invention, it is characterised in that：Including
Heating temperature-control system, quartz material leaching system, quantitative controllable spray system, system for detecting temperature, Filtrate collection device, gas
Collection device, air blast device and stainless steel frame 8；The heating temperature-control system includes red ceramic Electrothermal ring 1-1, number
Aobvious temperature control box 1-2, compressed spring type thermocouple 1-3；The quartz material leaching system includes quartzy leaching pipe 2-1, aluminium oxide ceramics
Heat-insulating plug 2-2, Quick hoop 2-3, quartzy filtrate collecting tank 2-4, adjustable chuck 2-5, fixed chuck 2-6；It is described quantitative controllable
Spray system includes leaching liquid storage bottle 6-1, peristaltic pump 6-2, drip irrigation emitter 6-3；The system for detecting temperature includes K-type thermocouple
5-1 and multichannel temperature recorder 5-2；The Filtrate collection device includes sealing valve 3-1, punching rubber stopper 3-2, filtrate receipts
Collect bottle 3-3, U-shaped drying tube 3-4；Gas collector is aluminium foil gas production bag 7；Air, which blasts device, includes glass rotameter
4-1 and electromagnetic air pump 4-2.
In the present embodiment, the quartzy leaching pipe of the red ceramic Electrothermal ring 1-1 and periphery parcel aluminium-foil paper protective layer
2-1 is fixed by lock ring bolt, is placed on the adjustable chuck 2-5, and lower nut tightens position on regulation adjustable chuck 2-5
Put to set red ceramic Electrothermal ring 1-1 vertical height；The digital display temperature-control case 1-2 is placed on the stainless steel frame 8
It is internal；The compressed spring type thermocouple 1-3 binding posts are connected with the digital display temperature-control case 1-2 inputs, and compressed spring type thermocouple 1-3 is visited
Head passes through patchhole and the quartzy leaching pipe 2-1 surfaces contact thermography among the red ceramic Electrothermal ring 1-1.
In the present embodiment, the quartzy leaching pipe 2-1 four thief holes of equidistant placement vertically；The quartzy leaching pipe 2-
1 bottom is wrapped up high temperature resistant silicon offset plate 2-8 and Quick hoop top connection 2-3-1 and is interference fitted, the Quick hoop top connection 2-3-1
Bottom is flushed with quartzy leaching pipe 2-1 bottoms, and quartzy leaching pipe 2-1 is smeared with Quick hoop top connection 2-3-1 joining places and prevented fires
Fire retardant glue is sealed；The adjustable chuck 2-5 is nested in the Quick hoop top connection 2-3-1 outers, in adjustable chuck 2-5
Footpath is identical with Quick hoop top connection 2-3-1 tops external diameter；The Quick hoop top connection 2-3-1 and Quick hoop lower contact 2-
3-2 is sealed by silica gel sealing ring 2-3-3, Quick hoop top connection 2-3-1 and Quick hoop lower contact 2-3-2 Quick hoops
Cutting ferrule 2-3-4 tightens connection；The quartzy filtrate collecting tank 2-4 flange diameters are identical with through hole silica gel ring 2-7 hole clipping diameters, institute
State through hole silica gel ring 2-7 to be interference fitted with quartzy filtrate collecting tank 2-4 upper ends column part, quartzy filtrate collecting tank 2-4
Flange bottom and through hole silica gel ring 2-7 hole clipping tip contacts；The Quick hoop lower contact 2-3-2 enters with through hole silica gel ring 2-7
Row interference fit, Quick hoop lower contact 2-3-2 tops are concordant with through hole silica gel ring 2-7 edges；The quartzy filtrate collecting tank
Gap is sealed by smearing fire protection flame retarding glue between 2-4 and Quick hoop lower contact 2-3-2；The Quick hoop lower contact
2-3-2 is nested in inside the fixed chuck 2-6, fixed chuck 2-6 internal diameters and Quick hoop lower contact 2-3-2 tops external diameter
It is identical；The fixed chuck 2-6 and adjustable chuck 2-5 is fixed on the panel of stainless steel frame 8 by bolt hole.
In the present embodiment, the quartzy filtrate collecting tank 2-4 bottoms leakage fluid dram is defeated by rubber hose and sealing valve 3-1
Entering end connection, the sealing valve 3-1 output ends are tightly connected by punching rubber stopper 3-2 inlet openings with filtrate receiving flask 3-3,
The punching rubber stopper 3-2 steam vents are connected by rubber hose with U-shaped drying tube 3-4, and alkali stone is filled in U-shaped drying tube 3-4
Grey drier, for removing the CO in air2Gas, prevent CO2Leaching liquor is dissolved in impact pH indexs.
In the present embodiment, the quartzy filtrate collecting tank 2-4 sides air admission hole and glass rotameter 4-1 exhaust ports
Connected by appendix, it is 6~60ml/min that the glass rotameter 4-1, which controls air inflow scope,；The glass rotors
Flowmeter 4-1 air inlet ports are connected with electromagnetic air pump 4-2 by appendix；The electromagnetic air pump 4-2 provides wind regime,
Maximum capacity is 40L/min.
In the present embodiment, aluminium oxide ceramics heat-insulating plug 2-2 is set to be sealed at the top of the quartzy leaching pipe 2-1；The K
Type thermocouple 5-1 probes are inserted in quartzy leaching pipe 2-1 through aluminium oxide ceramics heat-insulating plug positioning hole 2-2-2 to be referred to inside material
Positioning is put, and K-type thermocouple 5-1 binding posts are connected with multichannel temperature recorder 5-2, and the multichannel temperature recorder 5-2 is used
In the temperature change for recording specified location inside material in quartz ampoule 2-1；The aluminium oxide ceramics heat-insulating plug 2-2 is equidistant along axis
It is distributed 6 positioning holes；Gap is anti-by smearing between K-type thermocouple 5-1 and aluminium oxide ceramics heat-insulating plug the positioning hole 2-2-2
Fiery fire retardant glue is sealed.
In the present embodiment, the leaching liquid storage bottle 6-1 is connected by rubber hose with peristaltic pump 6-2 inputs, described compacted
Dynamic pump 6-2 flow adjustment ranges are 0~100ml/min；The wriggling 6-2 pump output terminals pass through rubber hose and drip irrigation emitter 6-
3 connections, the drip irrigation emitter 6-3 are fixed on aluminium oxide ceramics heat-insulating plug inlet opening 2-2-1, drip irrigation emitter 6-3 and aluminum oxide
Gap is sealed by smearing fire protection flame retarding glue between ceramic insulation fills in fluid apertures 2-2-1.
In the present embodiment, pass through between the air admission hole of aluminium foil gas production bag 7 and aluminium oxide ceramics heat-insulating plug the steam vent 2-2-3
Appendix connects, and gap is by smearing fire protection flame retarding glue between the aluminium oxide ceramics heat-insulating plug steam vent 2-2-3 and appendix
Sealed.
The method that gangue high-temperature area rainfall leaching simulated experiment is carried out using said apparatus specifically includes following steps：
Step 1: assembling quartz material leaching system：Quick hoop top connection 2-3-1 and silica gel sealing ring 2-3-3 it
Between stainless steel filtering net 2-9 is set, play a part of supporting material, quartzy leaching pipe 2-1 side wall thief holes block up with aluminium oxide ceramics
Head blocks, and assembling, which finishes, fills water in backward leaching system, detect the sealing of leaching system；
Step 2: the charge material into sealing good quartz material leaching system, material top, bottom are thickness 4cm,
The quartz sand 9-1 of the mesh grade of 10 mesh~20, intermediate layer are the gangue 9-2, quartzy leaching pipe 2-1 of thickness 20cm, -1mm grade
Peripheral parcel aluminium-foil paper protective layer, additional red ceramic Electrothermal ring 1-1, regulation adjustable chuck 2-5 set red ceramic electricity to add
Gas ket 1-1 vertical height；
Step 3: with aluminium oxide ceramics heat-insulating plug 2-2 to being sealed at the top of quartzy leaching pipe 2-1, K-type thermocouple 5-1
Quartzy leaching pipe 2-1 setting positions are embedded in through aluminium oxide ceramics heat-insulating plug positioning hole 2-2-2, connect temperature detection record
System, quantitative controllable spray system, air blast device, Filtrate collection device and air collecting device；
Step 4: by digital display temperature-control case 1-2 set 300 DEG C of simulation coal gangue hill high-temperature area (400 DEG C, 500 DEG C, 600
DEG C, 700 DEG C) temperature, regulation peristaltic pump 6-2 flow sets spraying intensity be 10ml/min, adjusts glass rotameter 4-1
Aeration quantity is set as 20ml/min, parameter setting carries out high-temperature area leaching simulated experiment after terminating；
Step 5: leaching liquor obtained by during collecting simulated experiment respectively as Filtrate collection device and gas collector
With toxic and harmful gas, detect the pH value of leaching liquor, conductivity value, oxidation-reduction potential, total solids content and heavy metal (Pb,
Cu, Cd, Hg) index such as content, SO in gas collected by detection2、H2S, CO concentration；
Step 6: simulated eluviation experiment is taken in different time stage and different heaps by quartzy leaching pipe 2-1 thief holes
The coal gangue sample of opening position is deposited, detects the physico-chemical property of coal gangue sample；
Step 7: after simulated eluviation experiment terminates, close successively and dismantle quantitatively controllable spray system, air blasts dress
Put, intelligent heating temperature control system, temperature detection record system, Filtrate collection device, gas collector and quartz material leaching
System, and column entirety discharging is carried out to stockpiling in quartzy leaching pipe 2-1, the material of specified temp field different zones is entered
Row sampling detection, the front and rear physico-chemical property change of analysis gangue reaction.
It is described above, only it is presently preferred embodiments of the present invention, any restrictions is not done to the present invention, it is every according to invention skill
Any simple modification, change and the equivalent structure change that art is substantially made to above example, still fall within the technology of the present invention
In the protection domain of scheme.
Bibliography
[1] Cao Hai flies spontaneous combustion of coal gangue hill and prevention and controls inquire into [J] hydraulic coal minings and pipeline transportation, 2009 (1):80-81.
[2]Johnson D B,Hallberg K B.Acid mine drainage remediation options:a
review[J].Science of the Total Environment,2005,338(1-2):3-14.
[3] flat China's coal-mines Coal Gangue Heap Treatment process [J] the mining safeties of Yue Chao and environmental protection, 2007,34 (b06):73-75.
[4] Chen Yan, yellow great favor, Li Weiqing, low-sulfur gangues leaching characteristics are waited to study [J] Chongqing Environmental Sciences, 1988 (5):
17-22.
Claims (9)
- A kind of 1. coal gangue hill high-temperature area rainfall leaching analogue experiment installation, it is characterised in that：Including heating temperature-control system, stone English material leaching system, quantitative controllable spray system, system for detecting temperature, Filtrate collection device, gas collector, air drum Enter device and stainless steel frame (8)；The heating temperature-control system includes red ceramic Electrothermal ring (1-1), digital display temperature-control case (1- 2), compressed spring type thermocouple (1-3)；The quartz material leaching system includes quartzy leaching pipe (2-1), aluminium oxide ceramics heat-insulating plug (2-2), Quick hoop (2-3), quartzy filtrate collecting tank (2-4), adjustable chuck (2-5), fixed chuck (2-6)；It is described quantitative Controllable spray system includes leaching liquid storage bottle (6-1), peristaltic pump (6-2), drip irrigation emitter (6-3)；The system for detecting temperature bag Include K-type thermocouple (5-1) and multichannel temperature recorder (5-2)；The Filtrate collection device includes sealing valve (3-1), beaten Hole rubber stopper (3-2), filtrate receiving flask (3-3), U-shaped drying tube (3-4)；Gas collector is aluminium foil gas production bag (7)；Air Blasting device includes glass rotameter (4-1) and electromagnetic air pump (4-2).
- A kind of 2. coal gangue hill high-temperature area rainfall leaching analogue experiment installation according to claim 1, it is characterised in that： The quartzy leaching pipe (2-1) of the red ceramic Electrothermal ring (1-1) and periphery parcel aluminium-foil paper protective layer passes through lock ring bolt It is fixed, is placed on the adjustable chuck (2-5), it is red to set tightens position for lower nut on regulation adjustable chuck (2-5) The vertical height of color ceramic electric heating circle (1-1)；It is internal that the digital display temperature-control case (1-2) is placed on the stainless steel frame (8)； Compressed spring type thermocouple (1-3) binding post is connected with digital display temperature-control case (1-2) input, compressed spring type thermocouple (1-3) Pop one's head in through patchhole among the red ceramic Electrothermal ring (1-1) and quartzy leaching pipe (2-1) the surface contact thermography.
- 3. a kind of coal gangue hill high-temperature area rainfall leaching analogue experiment installation according to claim 1 or 2, its feature exist In：The quartzy leaching pipe (2-1) four thief holes of equidistant placement vertically；Quartzy leaching pipe (2-1) the bottom parcel is resistance to High temperature silicon offset plate (2-8) is interference fitted with Quick hoop top connection (2-3-1), Quick hoop top connection (2-3-1) bottom Flushed with quartzy leaching pipe (2-1) bottom, quartzy leaching pipe (2-1) is smeared anti-with Quick hoop top connection (2-3-1) joining place Fiery fire retardant glue is sealed；The adjustable chuck (2-5) is nested in Quick hoop top connection (2-3-1) outer, adjustable card Disk (2-5) internal diameter is identical with Quick hoop top connection (2-3-1) top external diameter；The Quick hoop top connection (2-3-1) with it is fast The hoop lower contact (2-3-2) that is loaded is sealed by silica gel sealing ring (2-3-3), Quick hoop top connection (2-3-1) and Quick hoop Lower contact (2-3-2) tightens connection with Quick hoop cutting ferrule (2-3-4)；Quartzy filtrate collecting tank (2-4) flange diameter with Through hole silica gel ring (2-7) hole clipping diameter is identical, the through hole silica gel ring (2-7) and quartzy filtrate collecting tank (2-4) upper end cylinder Part is interference fitted, quartzy filtrate collecting tank (2-4) flange bottom and through hole silica gel ring (2-7) hole clipping tip contact；Institute State Quick hoop lower contact (2-3-2) to be interference fitted with through hole silica gel ring (2-7), Quick hoop lower contact (2-3-2) top End is concordant with through hole silica gel ring (2-7) edge；The quartzy filtrate collecting tank (2-4) and Quick hoop lower contact (2-3-2) it Between gap sealed by smearing fire protection flame retarding glue；The Quick hoop lower contact (2-3-2) is nested in the fixed chuck (2-6) is internal, and fixed chuck (2-6) internal diameter is identical with Quick hoop lower contact (2-3-2) top external diameter；The fixed chuck (2-6) is fixed on stainless steel frame (8) panel with adjustable chuck (2-5) by bolt hole.
- A kind of 4. coal gangue hill high-temperature area rainfall leaching analogue experiment installation according to claim 3, it is characterised in that： Quartzy filtrate collecting tank (2-4) the bottom leakage fluid dram is connected by rubber hose with sealing valve (3-1) input, described to stop Penstock (3-1) output end is tightly connected by punching rubber stopper (3-2) inlet opening with filtrate receiving flask (3-3), the punching Rubber stopper (3-2) steam vent is connected by rubber hose with U-shaped drying tube (3-4), filling soda lime in U-shaped drying tube (3-4) Drier, for removing the CO in air2Gas, prevent CO2Leaching liquor is dissolved in impact pH indexs.
- A kind of 5. coal gangue hill high-temperature area rainfall leaching analogue experiment installation according to claim 4, it is characterised in that： Quartzy filtrate collecting tank (2-4) the side air admission hole is connected with glass rotameter (4-1) exhaust port by appendix, It is 6~60ml/min that the glass rotameter (4-1), which controls air inflow scope,；The glass rotameter (4-1) is entered Gas port is connected with electromagnetic air pump (4-2) by appendix；The electromagnetic air pump (4-2) provides wind regime, maximum row Tolerance is 40L/min.
- A kind of 6. coal gangue hill high-temperature area rainfall leaching analogue experiment installation according to claim 5, it is characterised in that： Aluminium oxide ceramics heat-insulating plug (2-2) is set to be sealed at the top of the quartzy leaching pipe (2-1)；The K-type thermocouple (5-1) is visited Pin inserts material inside specified location, K-type in quartzy leaching pipe (2-1) through aluminium oxide ceramics heat-insulating plug positioning hole (2-2-2) Thermocouple (5-1) binding post is connected with multichannel temperature recorder (5-2), and the multichannel temperature recorder (5-2) is used to remember Record the temperature change of specified location inside material in quartz ampoule (2-1)；The aluminium oxide ceramics heat-insulating plug (2-2) is equidistant along axis It is distributed 6 positioning holes；Gap passes through painting between the K-type thermocouple (5-1) and aluminium oxide ceramics heat-insulating plug positioning hole (2-2-2) Fire protection flame retarding glue is smeared to be sealed.
- A kind of 7. coal gangue hill high-temperature area rainfall leaching analogue experiment installation according to claim 6, it is characterised in that： The leaching liquid storage bottle (6-1) is connected by rubber hose with peristaltic pump (6-2) input, and peristaltic pump (6-2) flow is adjusted Adjusting range is 0~100ml/min；Wriggling (6-2) pump output terminal is connected by rubber hose with drip irrigation emitter (6-3), institute State drip irrigation emitter (6-3) to be fixed on aluminium oxide ceramics heat-insulating plug inlet opening (2-2-1), drip irrigation emitter (6-3) is made pottery with aluminum oxide Gap is sealed by smearing fire protection flame retarding glue between porcelain heat-insulating plug inlet opening (2-2-1).
- A kind of 8. coal gangue hill high-temperature area rainfall leaching analogue experiment installation according to claim 7, it is characterised in that： It is connected between aluminium foil gas production bag (7) air admission hole and aluminium oxide ceramics heat-insulating plug steam vent (2-2-3) by appendix, it is described Aluminium oxide ceramics heat-insulating plug steam vent (2-2-3) gap between appendix is sealed by smearing fire protection flame retarding glue.
- A kind of 9. experimental method using experimental provision described in any one in claim 1~8, it is characterised in that：Including with Lower step：Step 1: assembling quartz material leaching system：Quick hoop top connection (2-3-1) and silica gel sealing ring (2-3-3) it Between stainless steel filtering net (2-9) is set, play a part of supporting material, quartzy leaching pipe (2-1) side wall thief hole made pottery with aluminum oxide Porcelain plug blocks, and assembling, which finishes, fills water in backward leaching system, detect the sealing of leaching system；Step 2: the charge material into sealing good quartz material leaching system, quartzy leaching pipe (2-1) periphery parcel aluminium Foil paper protective layer, additional red ceramic Electrothermal ring (1-1), regulation adjustable chuck (2-5) set red ceramic Electrothermal ring (1- 1) vertical height；Step 3: with aluminium oxide ceramics heat-insulating plug (2-2) to being sealed at the top of quartzy leaching pipe (2-1), K-type thermocouple (5- 1) quartzy leaching pipe (2-1) setting position is embedded in through aluminium oxide ceramics heat-insulating plug positioning hole (2-2-2), connects temperature inspection Survey record system, quantitative controllable spray system, air and blast device, Filtrate collection device and air collecting device；Step 4: simulation coal gangue hill high-temperature area specified temp, regulation peristaltic pump (6- are set by digital display temperature-control case (1-2) 2) flow set spraying intensity, regulation glass rotameter (4-1) setting aeration quantity, parameter setting carry out high-temperature region after terminating Domain leaching simulated experiment；Step 5: leaching liquor is with having obtained by during collecting simulated experiment respectively as Filtrate collection device and gas collector Malicious pernicious gas, and detect the indices of leaching liquor and toxic and harmful gas；Step 6: simulated eluviation experiment is taken in different time stage and different stockpilings by quartzy leaching pipe (2-1) thief hole The coal gangue sample of opening position, detect the physico-chemical property of coal gangue sample；Step 7: after simulated eluviation experiment terminates, close successively and dismantle quantitatively controllable spray system, air blasts device, intelligence Energy heating temperature-control system, temperature detection record system, Filtrate collection device, gas collector and quartz material leaching system, And column entirety discharging is carried out to stockpiling in quartzy leaching pipe (2-1), the material of specified temp field different zones is carried out Sampling detection, the front and rear physico-chemical property change of analysis gangue reaction.
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