CN109626830A - Utilize dangerous waste treated quenched method and apparatus for preparing porous glass ceramics basic material and porous glass ceramics of hot molten slag - Google Patents
Utilize dangerous waste treated quenched method and apparatus for preparing porous glass ceramics basic material and porous glass ceramics of hot molten slag Download PDFInfo
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- CN109626830A CN109626830A CN201811600692.8A CN201811600692A CN109626830A CN 109626830 A CN109626830 A CN 109626830A CN 201811600692 A CN201811600692 A CN 201811600692A CN 109626830 A CN109626830 A CN 109626830A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
- C03C11/007—Foam glass, e.g. obtained by incorporating a blowing agent and heating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/02—Pretreated ingredients
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0063—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing waste materials, e.g. slags
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
Dangerous waste treated quenched method and apparatus for preparing porous glass ceramics basic material and porous glass ceramics of hot molten slag are directly utilized the present invention relates to a kind of.For the high problem of energy consumption in porous glass ceramics production process, a kind of device that can utilize hot molten slag online is provided, by taking the mating of slag and quenched material add-on system online, has got through the process route that hot molten slag prepares porous glass ceramics online.Pass through different dangerous wastes treated waste residue or the ingredient of solid waste compounding, pass through concurrent heating high temperature melting again, make it that Water Quenching Slag be made after the uniform melt of forming component in the molten state, raw material is provided for porous glass ceramics preparation, raw material can also be provided for other foamed ceramics industries, insulation material industry raw material sources widened, so that the manufacturing cost of porous glass ceramics substantially reduces, with the very strong market competitiveness, while adequately achieving the maximization that dangerous waste recycling recycles added value.
Description
Technical field
The invention belongs to utilization of waste as resource fields, are related to one kind and directly make porous using dangerous waste hot molten slag
The method and apparatus of glass ceramics, in particular to it is a kind of directly to utilize the hot molten of dangerous waste high-temperature fusion reduction treatment dangerous waste slag generation
The quenched method and apparatus for preparing porous glass ceramics basic material and porous glass ceramics of slag.
Technical background
Dangerous solid waste, which refers to be included in National Hazard waste register or identified according to the hazardous waste of national regulation, to be marked
Quasi- and identification method identification the waste with Hazardous Characteristics of Hazardous Wastes.If hazardous waste is mishandling, can to ecological environment and
Human health brings irreversible significant damage.After Hazardous Wastes Management soil and groundwater, the mankind once pass through food
With the long-term intake noxious material such as water, it will cause the accumulation of human toxin, lead to the distortion and canceration of internal cell.
Since dangerous solid waste is different from the particularity of general industry solid waste, consider it to the mankind and environment
Serious influence, various countries are also by special approaches and methods, therefore, to dangerous solid to the processing of dangerous solid waste
The processing disposition of waste is a valuable global problem.Developed country disposes the processing of dangerous solid waste
According to clean manufacturing, the principle that recycles and effectively control, ensure that the discharge of dangerous solid waste from beginning of production,
And advanced technological means and rigorous laws and regulations are used during handling disposition, constantly reinforce returning for dangerous solid waste
It receives, is finally reached minimizing, recycling and innoxious degree.Therefore, dangerous solid waste also belongs to resources development and utilization
Type waste has very big utility value.High-temperature fusion reduction treatment technology is the side that dangerous solid waste resource recovery recycles
One of method, process are as follows: carry out heating melting processing in the case where suitable additive is added in dangerous solid waste, make to endanger
Organic pollutant decomposes in useless, recycles the non-ferrous metal in dangerous waste, such as copper, lead, nickel, zinc, tin, gold, silver, platinum and other are dilute
There is metal, and slag is rapidly cooled to form fine and close, stable sintered glass body, the slag of formation is alternatively arranged as the materials such as building materials
Material.But slag comprehensive utilization is fabricated to different building products (such as concrete, cement porous brick, building-block, steamed brick
Deng) and roadbed after, there are heavy metal contaminants Transport And Transformation risks, and harmful heavy metal under rainwash in product may
It leaches, and enters in superficial water, soil, animal, plant and its intracorporal ecological chain of people, bring long-term danger to environment and human body
Evil.And the migration of heavy metal is solidified by high temperature, that is, is made through reactions such as oxidization-reductions using chemical method toxic
The valence state of heavy metal changes or is wrapped up by other substances, and heavy metal is fixed on interiors of products, can prevent its migration
Or be diffused into environment, so that heavy metal reduces the extent of injury of human body.Cellular glass as " Environmental harmony material " is made pottery
Porcelain is able to satisfy requirements above completely.
Porous glass ceramics are made of glass phase, crystal and stomata three parts.In the glass for being uniform-distribution with a large amount of stomatas
In glass phase matrix, uniformly dispersing a large amount of tiny crystals, so that glass is linked together with crystal network, formed glass crystalline substance single fisherman's knot
Structure substantially increases the mechanical strength of material, so as to for making materials for wall, adsorbent material.Prepare porous glass ceramics
Raw material mainly from the multiple groups containing the transition metal elements such as silicon, aluminium, iron, calcium, magnesium, sodium, potassium and chromium, copper, zinc, manganese, nickel, titanium
Divide solid waste.But need to consume a large amount of energy in the production process of porous glass ceramics, energy consumption cost accounts for product cost
40% or more, cause its selling price to remain high.Therefore, the key for reducing porous glass ceramics production cost is to reduce energy
Consumption.
The hot molten slag that high-temperature fusion reduction treatment technology generates has very high temperature, then by suitable concurrent heating, then
Its residual heat resources not only can be sufficiently recycled, and is convenient for the recycling of slag body, while generation environment does not pollute.And different danger
The useless slag chemical component difference generated after treatment is larger, for slag the quenched formation of compounding meet glass ceramics with it is porous
The melt of glass ceramics provides good material base, realizes energy-saving and hot in porous glass ceramics preparation process
The organic unity that state slag heat recycles, is one of hot spot technology of Developing.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of by being generated using high-temperature fusion reduction treatment dangerous waste technology
Hot molten slag hardening and tempering process and device, obtain the basic material for being used to prepare porous glass ceramics and prepare cellular glass pottery
The method of porcelain.
Technical solution of the present invention:
A kind of direct quenched method for preparing porous glass ceramics basic material of hot molten slag handled using dangerous waste, including
Following steps:
(1) hot molten slag after taking a little dangerous waste to dispose, hot molten slag obtains Water Quenching Slag after water quenching, to the chemistry of Water Quenching Slag
Ingredient is analyzed, and according to the chemical composition of hot molten slag and parent glass, determines the composition of quenched material；
(2) quenched pellet is worn into powder, the spherical particle of 1-10mm is then made, it is spare；
(3) hot molten slag of dangerous waste processing was passed through slag runner to be introduced into the modifying device of dangerous waste processing hot molten slag,
And while hot molten slag flows into feed tank, quenched material is added in the modifying device by feed opening, is made quenched
Material is uniformly mixed in hot molten slag；The hot molten slag concurrent heating for being mixed with quenched material, heat preservation are given by heated by electrodes, make melt
Further homogenizing and clarification；Finally, melt is flowed out by the discharge port of material path, through water quenching, porous glass ceramics basic material is obtained；
(4) metallic element in dangerous waste processing hot molten slag obtains metal alloy, the conditioned dress of metal alloy after carrying out reduction
The tapping hole in bottom set portion flows out.
The quenched material is dangerous waste slag or solid waste, the main component (wt%) of dangerous waste slag or solid waste are as follows: SiO235-80%,
CaO 1-15%, Al2O35-18%, MgO 2-8%, TFe 2-8%.
The quenched material is mainly made of reducing agent and dangerous waste waste residue or Industrial Solid Waste, the reducing agent be coal dust, coke,
One of active carbon, coke powder and waste carbon-containing combustible organic, scrap anode carbon block powder or a variety of combinations.
Temperature after the hot molten slag concurrent heating is 1300 DEG C -1450 DEG C, and keeps the temperature 1-3h in this high temperature section.
The method of porous glass ceramics is directly prepared after a kind of dangerous waste processing hot molten slag is quenched, comprising the following steps:
(1) above-mentioned porous glass ceramics basic material is dried, is put into ball mill grinding in ball mill；
(2) by after ball milling water quenching material extrusion forming or stone form, burnt into sintering furnace by certain heating cycle
System, obtains porous glass ceramics after cooling.
The granularity of the ball mill grinding is 300 mesh hereinafter, the sintering furnace is roller kilns, tunnel oven or batch-type furnace, sintering
Temperature is 900-1150 DEG C, soaking time 1-3h.
A kind of processing hot molten slag modifying device, including furnace body, burner hearth and material-receiving device, the furnace body both ends sealing,
The burner hearth matches with furnace body, and is fixed on furnace interior, thermal insulation material is equipped between furnace body and burner hearth, in furnace body
Equipped with through furnace body and extending into the graphite electrode of furnace interior, the furnace body upper end and two sides for being located at graphite electrode are respectively equipped with and pass through
The feed inlet and dust removal port for wearing furnace body are equipped with hearth electrode on the bottom surface of furnace interior cavity body, are equipped with and furnace in furnace body side
The discharge port and tapping hole of body connection, discharge port and tapping hole are respectively positioned on the surface of material-receiving device, lead on the side of furnace body
It crosses revolute pair and fixes two rotation axis stretched out horizontally outward, the material-receiving device is located at the obliquely downward of furnace body side, splicing
The axis of device and the axis of furnace body are parallel and coplanar, the axis and furnace body of the axis of the rotation axis perpendicular to material-receiving device
Face where axis, the side of the furnace body are equipped with the temp measuring system being connected to furnace interior.
The dangerous waste processing hot molten slag modifying device further includes control system, and control system is connect with temp measuring system,
The control system includes touch screen, PLC and executing agency, carries out parameters setting, thermometric system to PLC using touch screen
System output electric signal is converted by A/D, carries out PID arithmetic by PLC, then passes through D/A respectively to temperature according to PID arithmetic result
Degree, charging and charging process are controlled, and PLC is connect with touch screen, control circuit respectively by data/address bus；The control electricity
Contain the switching signal circuit of a certain number of manual switches and signal acquisition circuit that are connected with input terminal in road.
Beneficial effects of the present invention:
(1) present invention develops a kind of device that can utilize hot molten slag online, by taking slag and quenched material to add online
System it is mating, got through the process route that hot molten slag prepares porous glass ceramics online.
(2) present invention is by different dangerous wastes treated hot waste residue or the ingredient of solid waste compounding, then passes through concurrent heating high temperature
It is melted quenched, makes it that Water Quenching Slag be made after the uniform melt of forming component in the molten state, mentioned for porous glass ceramics preparation
For basic material, raw material can also be provided for other foamed ceramics industries, widen the raw material sources of insulation material industry, reduce water
It quenches slag cost.
(3) present invention some calcium, the higher waste residue of iron content can be used, and to prepare porous glass ceramics, beat
The low limitation of the high bring utilization rate of calcium in waste residue, iron content has been broken, the utilization rate of waste residue, solid waste utilization rate are substantially increased
Reach as high as 100%.
(4) present invention directly utilizes 1200 DEG C of temperature or more of hot molten slag, directly utilizes the thermal energy of hot molten slag, then leads to
It is quenched to cross melting furnace concurrent heating, produces porous glass ceramics, energy consumption is greatly saved, meets the energy-saving and emission-reduction policy of current country,
It is the significant technology innovation of domestic dangerous waste industry production, adequately achieves the maximization that dangerous waste recycling recycles added value.
(5) the parent glass raw material obtained after the present invention is conditioned is not required to add any foaming agent, and it is equal can to prepare aperture
It is even, intensity is higher, the good foam of heat insulation effect high entropy ceramics have very so that the manufacturing cost of the material further decreases
The strong market competitiveness.
Detailed description of the invention
Fig. 1 is the cross-sectional view that a kind of dangerous waste handles hot molten slag modifying device:
Fig. 2 is the top view that a kind of dangerous waste handles hot molten slag modifying device；
Fig. 3 is the left view of Fig. 2；
In figure: 1. furnace bodies, 2. burner hearths, 3. thermal insulation materials, 4. feed inlets, 5. dust removal ports, 6. graphite electrodes, 7. rotation axis,
8. hearth electrode, 9. temperature elements, 10. discharge ports, 11. material-receiving devices, 12. tapping holes.
Fig. 4 is the XRD spectrum of 3 porous glass ceramics of embodiment.
Fig. 5 is 3 porous glass ceramics Stereo microscope photo of embodiment.
Fig. 6 is the XRD spectrum of 4 porous glass ceramics of embodiment.
Fig. 7 is 4 porous glass ceramics Stereo microscope photo of embodiment.
Specific embodiment:
Embodiment 1: referring to Fig. 1-3, a kind of dangerous waste processing hot molten slag modifying device, including furnace body, burner hearth and splicing dress
It sets, the furnace body both ends sealing, burner hearth matches with furnace body, and is fixed on furnace interior, is equipped between furnace body and burner hearth
Thermal insulation material is equipped with through furnace body in furnace body and extend into the graphite electrode of furnace interior, furnace body upper end and is located at graphite electricity
The two sides of pole are respectively equipped with feed inlet and dust removal port through furnace body, and hearth electrode is equipped on the bottom surface of furnace interior cavity body,
Be equipped with the discharge port and tapping hole that are connected to furnace body in furnace body side, discharge port and tapping hole be respectively positioned on material-receiving device just on
Side, fixes two rotation axis stretched out horizontally outward by revolute pair on the side of furnace body, material-receiving device is located at furnace body side
Obliquely downward, the axis of material-receiving device and the axis of furnace body are parallel and coplanar, and the axis of the rotation axis is filled perpendicular to splicing
Face where the axis and furnace body axis set, the side of the furnace body are equipped with the temp measuring system being connected to furnace interior.
It further includes control system that the dangerous waste, which handles hot molten slag modifying device, and control system is connect with temp measuring system, described
Control system include touch screen, PLC and executing agency, parameters setting is carried out to PLC using touch screen, temp measuring system is defeated
Out electric signal by A/D convert, PID arithmetic is carried out by PLC, then according to PID arithmetic result by D/A respectively to temperature, into
Material and charging process are controlled, and PLC is connect with touch screen, control circuit respectively by data/address bus；The control circuit contains
There is the switching signal circuit of a certain number of manual switches and signal acquisition circuit that are connected with input terminal.
A kind of embodiment 2: dangerous waste processing quenched method for preparing porous glass ceramics basic material of hot molten slag
(1) surface treatment waste HW17 (electroplating sludge) is obtained after blister copper is extracted in reduction treatment by high-temperature fusion
To hot molten slag；Hot molten slag after taking a little dangerous waste to dispose, hot molten slag obtains Water Quenching Slag after water quenching, to the chemistry of Water Quenching Slag
Ingredient is analyzed；It the results are shown in Table 1.
The chemical composition (wt%) of Water Quenching Slag after 1 dangerous waste HW17 (electroplating sludge) of table processing
(2) according to the chemical composition of hot molten slag and parent glass, the composition of quenched material is determined；In the example quenched material by
85% dangerous waste HW50 (catalyst waste slag powder), 12% molybdic tailing and 3% active powdered carbon forms；By quenched material mix grinding, 5mm is made
Spherical particle, it is spare；
(3) dangerous waste processing hot molten slag was passed through into the quenched device of processing hot molten slag that slag runner is introduced into embodiment 1
It is interior, and while hot molten slag flows into feed tank, quenched pellet is added in modifying device by quenched material feed opening,
It is uniformly mixed in quenched material in hot molten slag；
(4) make hot molten slag in 1350 DEG C of heat preservation 3h, warp to the hot molten slag concurrent heating for mixing quenched material by heated by electrodes
Cross melt to be further homogenized and clarify, after obtaining good, uniform melt, then tilt main furnace body, melt by material path discharging
Mouth outflow, through water quenching, obtains water quenching material, i.e. porous glass ceramics basic material (chemical composition is shown in Table 2).
The primary chemical of 2 porous glass ceramics basic material of table forms (wt%)
| Ingredient | SiO2 | TFe | Al2O3 | CaO | MgO | Na2O | K2O |
| Content | 50-60 | 2-6 | 6-8 | 7-10 | 3-6 | 0.4-2.5 | 0.2-0.5 |
(5) metal in dangerous waste processing hot molten slag obtains metal alloy through reduction, through hot molten slag thermal refining device
Tapping hole outflow, obtain metal reduction after product.
Embodiment 3: a method of porous glass ceramics are prepared with the dangerous waste processing quenched raw material of hot molten slag.
(1) the obtained porous glass ceramics basic material of 2 step of embodiment (4) is dried, is put into ball mill and carries out
It is milled to 300 mesh or less；
(3) the water quenching feed powder end stone after ball milling is formed, into tunnel oven at 1050 DEG C, soaking time is to be burnt under 2h
It binds up one's hair bubble, cooling obtains porous glass ceramics.
Fig. 4 is the XRD spectrum of porous glass ceramics.The principal crystalline phase of porous glass ceramics as seen from the figure are as follows: albite and
Quartz.
Fig. 5 is porous glass ceramics Stereo microscope photo.Porous glass ceramics even aperture distribution as seen from the figure, hole
Diameter size is in 2-3mm.
The performance parameter of porous glass ceramics made from this example: bulk density 0.28g/cm3, thermal coefficient rate is 0.06W/
(m.k), compression strength 2.1MPa.
Embodiment 4: a method of porous glass ceramics are prepared with the dangerous waste processing quenched raw material of hot molten slag
(1) quenched material group is divided into 88% dangerous waste HW50 (dead catalyst), 5% coal-to-olefin gasification fine slag and 7% coal
Powder composition, is made 8mm spherical particle, spare；
(3) dangerous waste processing hot molten slag was passed through slag runner to be introduced into the quenched device of processing hot molten slag, and
While hot molten slag flows into feed tank, quenched pellet is added to the quenched dress of processing hot molten slag by quenched material feed opening
In setting, it is uniformly mixed in quenched material in hot molten slag；
(4) hot molten slag is handled 1400 DEG C of high-temperature regions to the hot molten slag concurrent heating for mixing quenched material by heated by electrodes
Between keep the temperature 2h, be further homogenized and clarify by melt, after obtaining good, uniform melt, then tilt main furnace body, melt
It is flowed out by the discharge port of material path, water quenching obtains porous ceramic matrix plinth raw material (chemical composition is shown in Table 2).
(5) product in dangerous waste processing hot molten slag after the metallic elements reduction such as iron, through hot molten slag thermal refining device
Tapping hole outflow, obtain metal reduction after product；
(6) drying of water quenching material is put into ball mill, carries out ball mill grinding to 200 mesh or less；
(7) the water quenching feed powder end stone after ball milling is formed, into tunnel oven at 1050 DEG C, soaking time is to be burnt under 3h
It binds up one's hair bubble, cooling obtains porous glass ceramics.
Fig. 6 is the XRD spectrum of 4 porous glass ceramics of embodiment.The principal crystalline phase of porous glass ceramics as seen from the figure are as follows: sodium
Feldspar and quartz.
Fig. 7 is 4 porous glass ceramics Stereo microscope photo of embodiment.Porous glass ceramics pore-size distribution as seen from the figure
Uniformly, aperture size is in 1-2mm.
The performance parameter of porous glass ceramics made from this example: bulk density 0.55g/cm3, thermal coefficient rate is 0.08W/
(m.k), compression strength 6.3MPa.
The chemical composition (wt%) of 3 dangerous waste HW50 (dead catalyst) of table
The primary chemical of 4 solid waste of table forms (wt%)
The main chemical compositions (wt%) of 5 embodiment of table, 2 metal alloy
| Fe | Cu | Zn | Cr | Pb |
| 37.80 | 59.06 | 0.43 | 1.71 | 0.18 |
Note: this experimental result uses the AAnalyst800 type atomic absorption spectrophotometry light of U.S. PerkinElmer company production
Degree measurement examination.
The Leaching of Heavy Metals test result (mg/l) of 6 embodiment of table, 3 product
| Heavy metal element | Total chromium | Total lead | Total copper | Total zinc | Total cadmium |
| National standard limits value | 12 | 5 | 75 | 76 | 0.5 |
| Porous glass ceramics | 7.747 | 0.195 | 1.308 | 0.009 | It is not detected |
Note: the control limit of landfill area's heavy metal is 1. allowed access into leachate according to " hazard waste landfill contamination control
Standard " (GB 18598-2001).
2. this experimental result is according to leaching toxicity from solid waste method sulfonitric method measurement (HJ/T299-2007).
3. this experimental result uses the AAnalyst800 type atomic absorption spectrophotometry light of U.S. PerkinElmer company production
Degree measurement examination.
Claims (8)
1. a kind of directly utilize the quenched method for preparing porous glass ceramics basic material of hot molten slag of dangerous waste processing, feature
It is, method includes the following steps:
(1) hot molten slag after taking a little dangerous waste to dispose, hot molten slag obtains Water Quenching Slag after water quenching, to the chemical component of Water Quenching Slag
It is analyzed, according to the chemical composition of hot molten slag and parent glass, determines the composition of quenched material；
(2) quenched pellet is worn into powder, the spherical particle of 1-10mm is then made, it is spare；
(3) hot molten slag of dangerous waste processing was passed through slag runner to be introduced into the modifying device of dangerous waste processing hot molten slag, and
While hot molten slag flows into feed tank, quenched material is added in the modifying device by feed opening, keeps quenched material equal
It is blended in hot molten slag evenly；The hot molten slag concurrent heating for being mixed with quenched material, heat preservation are given by heated by electrodes, make melt into one
Step homogenizing and clarification；Finally, melt is flowed out by the discharge port of material path, through water quenching, porous glass ceramics basic material is obtained；
(4) metallic element in dangerous waste processing hot molten slag obtains metal alloy, the conditioned device bottom of metal alloy after carrying out reduction
The tapping hole in portion flows out.
2. dangerous waste according to claim 1 handles hot molten slag hardening and tempering method, which is characterized in that the quenched material is dangerous waste
The main component (wt%) of slag or solid waste, dangerous waste slag or solid waste are as follows: SiO235-80%, CaO 1-15%, Al2O35-18%,
MgO 2-8%, TFe 2-8%.
3. dangerous waste according to claim 1 handles hot molten slag hardening and tempering method, which is characterized in that the quenched material mainly by
Reducing agent and dangerous waste waste residue or Industrial Solid Waste form, and the reducing agent is that coal dust, coke, active carbon, coke powder and waste carbon-containing can
Fire one of organic matter, scrap anode carbon block powder or a variety of combinations.
4. dangerous waste according to claim 1 handles hot molten slag hardening and tempering method, which is characterized in that the hot molten slag concurrent heating
Temperature afterwards is 1300 DEG C -1450 DEG C, and keeps the temperature 1-3h in this high temperature section.
5. directly preparing the method for porous glass ceramics after a kind of dangerous waste processing hot molten slag is quenched, which is characterized in that this method
The following steps are included:
(1) porous glass ceramics basic material described in claim 1 step (3) is dried, is put into ball mill grinding in ball mill；
(2) by after ball milling water quenching material extrusion forming or stone form, be fired into sintering furnace by certain heating cycle, pass through
Porous glass ceramics are obtained after cooling.
6. directly preparing the preparation method of porous glass ceramics, feature after hot molten slag according to claim 5 is quenched
It is, the granularity of the ball mill grinding is 300 mesh hereinafter, the sintering furnace is roller kilns, tunnel oven or batch-type furnace, sintering temperature
It is 900-1150 DEG C, soaking time 1-3h.
7. a kind of processing hot molten slag modifying device described in claim 1, including furnace body, burner hearth and material-receiving device, feature
Be: the furnace body both ends sealing, the burner hearth matches with furnace body, and is fixed on furnace interior, in furnace body and burner hearth
Between be equipped with thermal insulation material, be equipped in furnace body through furnace body and extend into the graphite electrode of furnace interior, furnace body upper end and position
It is respectively equipped with the feed inlet and dust removal port through furnace body in the two sides of graphite electrode, is equipped on the bottom surface of furnace interior cavity body
Hearth electrode is equipped with the discharge port and tapping hole being connected to furnace body in furnace body side, and discharge port and tapping hole are respectively positioned on material-receiving device
Surface, two rotation axis stretched out horizontally outward, the material-receiving device are fixed by revolute pair on the side of furnace body
Positioned at the obliquely downward of furnace body side, the axis of material-receiving device and the axis of furnace body are parallel and coplanar, the axis of the rotation axis
Perpendicular to the face where the axis and furnace body axis of material-receiving device, the side of the furnace body is equipped with the thermometric being connected to furnace interior
System.
8. processing hot molten slag modifying device according to claim 7, it is characterised in that: the dangerous waste processing is hot molten
Slag modifying device further includes control system, and control system is connect with temp measuring system, and the control system includes touch screen, PLC
And executing agency, parameters setting is carried out to PLC using touch screen, temp measuring system exports electric signal and converts by A/D, by
PLC carries out PID arithmetic, is then controlled respectively temperature, charging and charging process according to PID arithmetic result by D/A,
PLC is connect with touch screen, control circuit respectively by data/address bus；The control circuit contains the fixed number being connected with input terminal
The manual switch of amount and the switching signal circuit of signal acquisition circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811600692.8A CN109626830A (en) | 2018-12-26 | 2018-12-26 | Utilize dangerous waste treated quenched method and apparatus for preparing porous glass ceramics basic material and porous glass ceramics of hot molten slag |
Applications Claiming Priority (1)
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| CN115716710A (en) * | 2021-08-25 | 2023-02-28 | 宝山钢铁股份有限公司 | Method for on-line harmless treatment of chromium-containing sludge by using thermal-state blast furnace slag |
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| CN115724572A (en) * | 2021-08-25 | 2023-03-03 | 宝山钢铁股份有限公司 | Chromium-containing sludge vitrification harmless treatment method and device |
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