CN109232014A - A kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite - Google Patents
A kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite Download PDFInfo
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- CN109232014A CN109232014A CN201811056473.8A CN201811056473A CN109232014A CN 109232014 A CN109232014 A CN 109232014A CN 201811056473 A CN201811056473 A CN 201811056473A CN 109232014 A CN109232014 A CN 109232014A
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- contaminated soil
- cladding
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- feldspar
- feldspar tailing
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/009—Porous or hollow ceramic granular materials, e.g. microballoons
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
- C04B2235/321—Dolomites, i.e. mixed calcium magnesium carbonates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a kind of feldspar tailings to coat the method that disposition contaminated soil prepares haydite, comprising the following steps: the additive of contaminated soil dry mass 0.5%~5%, the mixed material after being mixed after sufficiently mixing are added first into contaminated soil；Green-ball again that the mixed material is conditioned, that 5mm~15mm is squeezed into after pugging；The green-ball is placed in the pelletizer added with feldspar tailing again and carries out cladding disposition；Dry 0.5h~5h under the conditions of the green-ball that external sheath has feldspar tailing is placed in 100 DEG C~300 DEG C again；Again by the green-ball after drying, through 3 DEG C~30 DEG C of heating rates to being roasted at 1000 DEG C~1200 DEG C, 5min~60min is kept the temperature, sintered balls are formed；The sintered balls after heat preservation are finally naturally cooling to room temperature, the haydite of feldspar tailing cladding contaminated soil preparation can be obtained.The haydite melting and solidification effect prepared through the invention is good, and intensity is high, and stability is good；And economic and environment-friendly, economic value with higher.
Description
[technical field]
The present invention relates to the technical fields more particularly to a kind of cladding disposition pollution of feldspar tailing of building materials and chemical industry environmental protection
The method of soil processing haydite.
[background technique]
Currently, with the development of industry, the requirement of the expansion in city and environmental protection, the industrial and mining enterprises of surrounding city
It is needed before re-using soil at contaminated soil around ground or mine containing the soil of heavy metal contaminants
It sets and utilizes, the development and utilization in related place could be carried out again.
There are mainly two types of the processing of contaminated soil: first is that planting specific plant, the heavy metal in contaminated soil being shifted
Afterwards, then by plant harvesting it handles；Second is that contaminated soil is replaced, that is, contaminated soil is removed, qualified soil is covered with
After use.Although the former is effectively, speed is slow, repair time is long, and time and effort consuming.Although the latter is also effective, progress is fast,
How the soil cemented out is disposed, dissolves, is utilized, it is also necessary to thorough consideration.It is limited by time requirement, technical restriction, environmental protection
It is required that, many factors such as processing cost, such contaminated soil still effectively can not be disposed or be utilized, by domestic and foreign scholars
Extensive concern, and become particular problem anxious to be resolved.Therefore, to the harmlessness disposing of contaminated soil or resource utilization
It has a very important significance, the sustainable development and stable particular problem concerning country and society.
[summary of the invention]
In view of this, in order to overcome the deficiencies of the prior art, the present invention provides a kind of feldspar tailing cladding disposition contaminated soil
The method for preparing haydite is valuably combined contaminated soil with feldspar resource of tailings, and it is more to seek out a kind of new cooperative disposal
The solidification method of disposal of kind solid waste, after mixing, damping, pugging, extrusion forming；Outer layer packet is carried out using feldspar tailing again
Disposition is covered, high temperature sintering, expansion, solidification are carried out to the contaminated soil of feldspar tailing cladding at high temperature, sintering effect is good, Gu
Change high-efficient, the product quality height after sintering curing, and environmentally protective, it is environmentally friendly, it is at low cost, it is economical and practical.
To achieve the above object, technical scheme is as follows:
A kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite, comprising the following steps:
(1) in the contaminated soil to natural air drying or with certain moisture be added contaminated soil dry mass 0.5%~
5% additive, the mixed material after being sufficiently mixed uniformly, after being mixed；
(2) green-ball said mixture material is conditioned, that 5mm~15mm is squeezed into after pugging；
(3) above-mentioned green-ball is placed in the pelletizer added with feldspar tailing and carries out cladding disposition；
(4) the contaminated soil green-ball that outer layer is coated with feldspar tailing in step (3) is placed under the conditions of 100 DEG C~300 DEG C
Dry 0.5h~5h；
(5) green-ball after again will be dry in above-mentioned steps (4), through 3 DEG C~30 DEG C of heating rates to 1000 DEG C~1200
It is roasted at DEG C, after maturing temperature is to 1000 DEG C~1200 DEG C, keeps the temperature 5min~60min, form sintered balls；
(6) sintered balls after heat preservation in above-mentioned steps (5) are taken out from high temperature furnace, is placed under natural conditions and drops naturally
It warms to room temperature, or power-off is naturally cooling to room temperature, the haydite of feldspar tailing cladding contaminated soil preparation can be obtained.
Preferably, the contaminated soil in the step (1) is to contain heavy metal pollution around industrial and mining enterprises place or mine
The soil of object.
Further, the additive in the step (1) is one of lime stone, dolomite, ankerite or a variety of.
Further, the damping in the step (2) is that control the moisture of the mixed material be 5%~20%.
Further, the pugging in the step (2) is to carry out extruding stirring to the mixed material after damping, to mention
The plasticity of the high mixed material, the plasticity index of the mixed material are 7~15.
Further, feldspar tailing described in the step (3) is feldspar ore after feldspar and quartz are extracted in flotation, is remained
Under solid waste, and in the feldspar tailing contain K2O+Na2O is 2%~7%, and granularity is -100 mesh.
Further, the drying temperature in the step (4) is 200 DEG C~260 DEG C, and drying time is 2h~3.5h.
Further, the heating rate in the step (5) is 10 DEG C~18 DEG C, and maturing temperature is 1080 DEG C~1150 DEG C,
Roast soaking time 10min~18min.
The beneficial effects of the present invention are: this method is a kind of new a variety of solid wastes of cooperative disposal, reach resource utilization
Solidify method of disposal, by wait dispose contaminated soil and a certain amount of additive mix after, utilize the feldspar tailing of external sheath
It is wrapped up, then reaches quasi- molten condition under certain hot conditions, and expanded and form light ceramic, then cool shape
At vitrified haydite, using the compact texture formed in temperature-fall period, complete the solidification of Heavy Metals in Contaminated Soils element with
Cladding.This method is adjusted using additive and is controlled the expansion multiple and bulk density of sintered body, the length obtained by this method
The melting and solidification effect that stone tailing cladding contaminated soil prepares haydite is good, and the melting and solidification body intensity with higher, for a long time
Stability is strong.Haydite is prepared using this method disposition contaminated soil, economic and environment-friendly, high-effect high-quality, economic valence with higher
Value.
[specific embodiment]
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff every other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
Now it is illustrated with four embodiments:
Embodiment 1:
The lime stone of contaminated soil dry mass 2.5% is added first into the contaminated soil of natural air drying, by abundant
After mixing, the mixed material after being mixed；By mixed material plus water damping, the mixture that water content is 15% is obtained
Material obtains the mixing clod that plasticity index is 9 after pug mill pugging, and being squeezed into diameter through double roller granulation extruder is 9mm
The green-ball of~10mm；K will be contained2O+Na2The feldspar tailing that O is 3%, granularity is -100 mesh is placed in pelletizer, then by green-ball
It is placed in the pelletizer added with feldspar tailing and carries out cladding disposition；External sheath is had to the contaminated soil green-ball of feldspar tailing
Dry 3h under the conditions of being placed in 200 DEG C；The contaminated soil green-ball through being dried is risen to 1100 DEG C by 10 DEG C of heating rate again
Under the conditions of roasted, roasting keeps the temperature 15min to after 1100 DEG C；Sintered balls after heat preservation are taken out from high temperature furnace, are placed in
It is naturally cooling to room temperature under natural conditions, the haydite of feldspar tailing cladding contaminated soil preparation can be obtained.
Embodiment 2:
The dolomite of contaminated soil dry mass 2.0% is added first into the contaminated soil containing 8% moisture, passes through
After being sufficiently mixed uniformly, the mixed material after being mixed；By mixed material plus water damping, obtain water content be 18% it is mixed
Material is closed, after pug mill pugging, obtains the mixing clod that plasticity index is 8, being squeezed into diameter through double roller granulation extruder is
The green-ball of 8mm~9mm；K will be contained2O+Na2The feldspar tailing that O is 4%, granularity is -100 mesh is placed in pelletizer, then will be given birth to
Ball, which is placed in the pelletizer added with feldspar tailing, carries out cladding disposition；There is the contaminated soil of feldspar tailing raw external sheath
Ball dry 2h under the conditions of being placed in 250 DEG C；The contaminated soil green-ball through being dried is risen to 1150 by 15 DEG C of heating rate again
It is roasted, is roasted to after 1150 DEG C under the conditions of DEG C, keep the temperature 10min；Sintered balls after heat preservation are taken out from high temperature furnace, are set
It is naturally cooling to room temperature under natural conditions, the haydite of feldspar tailing cladding contaminated soil preparation can be obtained.
Embodiment 3:
The ankerite of contaminated soil dry mass 3.0%, warp are added first into the contaminated soil containing 11% moisture
It crosses sufficiently after mixing, the mixed material after being mixed；By mixed material plus water damping, obtaining water content is 13%
Mixed material obtains the mixing clod that plasticity index is 10 after pug mill pugging, is squeezed into directly through double roller granulation extruder
Diameter is the green-ball of 11mm~12mm；K will be contained2O+Na2The feldspar tailing that O is 5%, granularity is -100 mesh is placed in pelletizer, so
Green-ball is placed in the pelletizer added with feldspar tailing afterwards and carries out cladding disposition；External sheath is had to the pollution of feldspar tailing
Soil green-ball dry 3.5h under the conditions of being placed in 220 DEG C；Again by the contaminated soil green-ball through being dried by 18 DEG C of heating rate
It is roasted, is roasted to after 1080 DEG C under the conditions of rising to 1080 DEG C, keep the temperature 18min；By the sintered balls after heat preservation from high temperature furnace
It takes out, is placed under natural conditions and is naturally cooling to room temperature, the haydite of feldspar tailing cladding contaminated soil preparation can be obtained.
Embodiment 4:
The lime stone and white clouds of contaminated soil dry mass 3.5% are added first into the contaminated soil of natural air drying
The mixture of stone, the mixed material after being sufficiently mixed uniformly, after being mixed；By mixed material plus water damping, contained
The mixed material that water is 11% obtains the mixing clod that plasticity index is 8.5, pelletizes and squeeze through double roller after pug mill pugging
Press is squeezed into the green-ball that diameter is 8mm~9mm；K will be contained2O+Na2The feldspar tailing that O is 5.5%, granularity is -100 mesh is placed in
In pelletizer, then green-ball is placed in the pelletizer added with feldspar tailing and carries out cladding disposition；External sheath there is into feldspar
The contaminated soil green-ball of tailing dry 2.5h under the conditions of being placed in 260 DEG C；Again by the contaminated soil green-ball through being dried by 18 DEG C
Heating rate rise to 1120 DEG C under the conditions of roasted, roasting keeps the temperature 13min to after 1120 DEG C；By the sintered balls after heat preservation
It is taken out from high temperature furnace, is placed under natural conditions and is naturally cooling to room temperature, the cladding contaminated soil preparation of feldspar tailing can be obtained
Haydite.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite, which comprises the following steps:
(1) adding for contaminated soil dry mass 0.5%~5% is added in the contaminated soil to natural air drying or with certain moisture
Add agent, the mixed material after being sufficiently mixed uniformly, after being mixed；
(2) green-ball said mixture material is conditioned, that 5mm~15mm is squeezed into after pugging；
(3) above-mentioned green-ball is placed in the pelletizer added with feldspar tailing and carries out cladding disposition；
(4) dry under the conditions of the contaminated soil green-ball that outer layer is coated with feldspar tailing in step (3) being placed in 100 DEG C~300 DEG C
0.5h~5h；
(5) green-ball after again will be dry in above-mentioned steps (4), through 3 DEG C~30 DEG C of heating rates at 1000 DEG C~1200 DEG C
It is roasted, after maturing temperature is to 1000 DEG C~1200 DEG C, keeps the temperature 5min~60min, form sintered balls；
(6) sintered balls after heat preservation in above-mentioned steps (5) are taken out from high temperature furnace, is placed under natural conditions and is naturally cooling to room
Temperature, or power-off are naturally cooling to room temperature, and the haydite of feldspar tailing cladding contaminated soil preparation can be obtained.
2. a kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite according to claim 1, feature exist
In the contaminated soil in the step (1) is the soil containing heavy metal contaminants around industrial and mining enterprises place or mine.
3. a kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite according to claim 1, feature exist
In the additive in the step (1) is one of lime stone, dolomite, ankerite or a variety of.
4. a kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite according to claim 1, feature exist
It is that control the moisture of the mixed material be 5%~20% in, the damping in the step (2).
5. a kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite according to claim 1, feature exist
In the pugging in the step (2) is to carry out extruding stirring to the mixed material after damping, to improve the mixed material
Plasticity.
6. a kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite according to claim 5, feature exist
In the plasticity index of the mixed material is 7~15.
7. a kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite according to claim 1, feature exist
In feldspar tailing described in the step (3) is feldspar ore after feldspar and quartz are extracted in flotation, remaining solid waste
Object.
8. a kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite according to claim 1 or claim 7, feature
It is, K is contained in feldspar tailing described in the step (3)2O+Na2O is 2%~7%, and granularity is -100 mesh.
9. a kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite according to claim 1, feature exist
In the drying temperature in the step (4) is 200 DEG C~260 DEG C, and drying time is 2h~3.5h.
10. a kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite according to claim 1, feature exist
In the heating rate in the step (5) is 10 DEG C~18 DEG C, and maturing temperature is 1080 DEG C~1150 DEG C, roasts soaking time
10min~18min.
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| CN201811056473.8A CN109232014A (en) | 2018-09-11 | 2018-09-11 | A kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite |
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| CN201811056473.8A CN109232014A (en) | 2018-09-11 | 2018-09-11 | A kind of method that feldspar tailing cladding disposition contaminated soil prepares haydite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111196731A (en) * | 2019-12-25 | 2020-05-26 | 山东山科生态环境研究院有限公司 | Method for fixing heavy metal in oil sludge dry slag, porous ceramsite and application |
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