CN109678467A - It is a kind of to utilize the haydite and preparation method thereof for smelting the preparation of dangerous waste slag - Google Patents
It is a kind of to utilize the haydite and preparation method thereof for smelting the preparation of dangerous waste slag Download PDFInfo
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- CN109678467A CN109678467A CN201910119108.5A CN201910119108A CN109678467A CN 109678467 A CN109678467 A CN 109678467A CN 201910119108 A CN201910119108 A CN 201910119108A CN 109678467 A CN109678467 A CN 109678467A
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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
- 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
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
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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
- 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
- C04B33/1328—Waste materials; Refuse; Residues without additional clay
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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
- 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
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
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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
- C04B2235/02—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
- C04B2235/3436—Alkaline earth metal silicates, e.g. barium silicate
- C04B2235/3454—Calcium silicates, e.g. wollastonite
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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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of using the haydite and preparation method thereof for smelting the preparation of dangerous waste slag, and the ingredient of haydite includes: to smelt dangerous waste slag 25%~35%, silica 30%~35%, flyash 35%~40%.The preparation method of haydite, which includes: (1), will smelt dangerous waste slag, silica and flyash and passes through Mechanical Crushing, sieves with 100 mesh sieve, takes the lower fine powder of sieve；(2) dangerous waste slag, silica and flyash then will be smelted to be uniformly mixed；(3) water is added into the mixed material obtained through step (2) and carries out pelletizing, and wet bulb is placed on outdoor place's natural air drying；(4) pellet obtained through step (3) is first subjected to pre-heating drying, then carries out high-temperature roasting, finally obtain haydite after cooling.For raw material of the invention using dangerous waste slag is smelted, smelting dangerous waste slag additive amount is big, both solves and smelts problem of environmental pollution caused by dangerous waste slag muck is deposited, while so that smelting dangerous waste slag is obtained recycling and rationally utilizing.
Description
Technical field
The invention belongs to smelt the innoxious governance technical field of dangerous waste slag, and in particular to a kind of to utilize smelting dangerous waste slag system
Standby haydite and preparation method thereof.
Background technique
The polluting property of hazardous waste has potentiality and chronicity, less bright to seeing on the pollution effect surface of environment
It is aobvious, be also easy it is ignored, but its damaging effect be it is long-term, consequence is difficult to clean off once showing, and costly,
The country generally uses security landfill, solidification method, chemical method when disposition has the industrial solid castoff of certain risk
And the modes such as high temperature incineration method, but comprehensive utilization ratio is poor, so the comprehensive utilization of hazardous waste resource seems especially heavy
It wants.Control the technical policy of noxious waste pollution, it is desirable that accomplish its minimizing, recycling and innoxious.Comparison dangerous waste slag exists
Requirement during each application field to raw material, current most effective processing mode is just made as light-weight aggregate product, by forging
Heavy metals immobilization in waste residue can be removed S etc. and endanger element by the mode of burning, can not only produce new product, again
SO2 can be absorbed and sulfuric acid is made, enterprise not only realizes cycle development, but also can bring economic benefit.
There are some methods for preparing haydite using melting waste slag at present, but is had the following disadvantages in these methods.(1) specially
In sharp CN 201610750892.6, haydite is prepared using manganese ore waste residue, other than 0.5~3% bentonite is added, haydite
Firing time is generally partially long, generally at 30~180 minutes；The firing of long-time high temperature greatly enhances energy consumption, increases
Production cost.(2) in patent CN201410068637.4, haydite is prepared using melting waste slag, the curing agent in Ceramsite formula
Additive amount is 0.1~10%, therefore this haydite materials cost is very high.(3) it in patent CN 201711429646.1, uses
Copper ashes magnetic separation slag and coal ash for manufacturing joined 0~30% clay, still can destroy arable land for sintering-expanded haydite in the formula of haydite
With consumption non-renewable resources.
Summary of the invention
Aiming at the shortcomings of the prior art, the present invention provide it is a kind of using smelt dangerous waste slag preparation haydite and its
Preparation method.
The present invention is achieved by the following technical solutions.
It is a kind of to utilize the haydite for smelting the preparation of dangerous waste slag, which is characterized in that it includes the raw material of following mass percent: smelting
Refine dangerous waste slag 25%~35%, silica 30%~35%, flyash 35%~40%.
According to above-mentioned haydite, which is characterized in that the smelting dangerous waste slag is nickeliferous for what is generated during metal smelting nickel
One of wastewater treatment sludge generated in the iron vitriol slag that generates in waste residue, Lead-Zinc Sintering Process, zinc regenerative process is a variety of
Mixture.
A kind of preparation method using the haydite for smelting the preparation of dangerous waste slag, which is characterized in that the method step includes:
(1) dangerous waste slag, silica and flyash will be smelted and passes through Mechanical Crushing, sieved with 100 mesh sieve, take the lower fine powder of sieve；
(2) dangerous waste slag, silica and flyash then will be smelted to be uniformly mixed；
(3) water is added into the mixed material obtained through step (2) and carries out pelletizing, and wet bulb is placed on outdoor place's natural wind
It is dry；
(4) pellet obtained through step (3) is first subjected to pre-heating drying, then carries out high-temperature roasting, finally after cooling
To haydite.
According to above-mentioned method, which is characterized in that the water being added in the step (3) is 10%~25%, natural air drying
Number of days be 1~3 day.
According to above-mentioned method, which is characterized in that the diameter of wet bulb is 5~25mm in the step (3).
According to above-mentioned method, which is characterized in that preheating temperature is 400~600 DEG C in the step (4), preheating time
10~30min.
According to above-mentioned method, which is characterized in that step (4) the high temperature maturing temperature is 1150 DEG C~1250 DEG C,
8~20min of calcining time.
According to above-mentioned method, which is characterized in that the tail gas generated after roasting in the step (4) is up to standard after treatment
Discharge.
According to above-mentioned method, which is characterized in that the bulk density of the haydite is 410~440kg/m3。
Advantageous effects of the invention:
(1) for raw material of the invention using dangerous waste slag is smelted, smelting dangerous waste slag additive amount is big, both solves and smelts dangerous waste slag muck
Problem of environmental pollution caused by depositing, while so that smelting dangerous waste slag is obtained recycling and rationally utilizing, improve resource utilization；
(2) the high-temperature roasting time of the present invention is short, not only saves the time, but also reduce cost；
(3) product of the present invention toxicity leaching experiment meets " hazardous waste judging standard-leaching characteristic identification "
Toxicity as defined in GB5085.3-2007, which leaches, to be required；
(4) product of the present invention belongs to Superlight ceramsites, and market application range is wider, and economic benefit is higher.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The raw material including following mass percent: a kind of haydite prepared using dangerous waste slag is smelted smelts dangerous waste slag 25%
~35%, silica 30%~35%, flyash 35%~40%.It is nickeliferous for what is generated during metal smelting nickel to smelt dangerous waste slag
One of wastewater treatment sludge generated in the iron vitriol slag that generates in waste residue, Lead-Zinc Sintering Process, zinc regenerative process is a variety of
Mixture.
As shown in Figure 1, a kind of preparation method using the haydite for smelting the preparation of dangerous waste slag, step include:
(1) dangerous waste slag, silica and flyash will be smelted and passes through Mechanical Crushing, sieved with 100 mesh sieve, take the lower fine powder of sieve；
(2) dangerous waste slag, silica and flyash then will be smelted to be uniformly mixed；
(3) water is added into the mixed material obtained through step (2) and carries out pelletizing, the water of addition is 10%~25%, and
It is that 5~25mm wet bulb is placed on outdoor place's natural air drying by diameter, the number of days of natural air drying is 1~3 day；
(4) pellet obtained through step (3) is first subjected to pre-heating drying, preheating temperature is 400~600 DEG C, preheating time
10~30min, then high-temperature roasting is carried out, high-temperature roasting temperature is 1150 DEG C~1250 DEG C, and 8~20min of calcining time is most passed through afterwards
It is 410~440kg/m that bulk density is obtained after cooling3Superlight ceramsites；The tail gas generated after roasting row up to standard after treatment
It puts.
Embodiment 1
It is a kind of to utilize the haydite and preparation method thereof for smelting the preparation of dangerous waste slag, comprising the following steps:
Step 1: nickel-contained waste slag, silica and flyash being passed through into Mechanical Crushing, sieved with 100 mesh sieve, the lower fine powder of sieve is taken；
Step 2 takes nickel-contained waste slag 25%, flyash 40%, silica 35% respectively by mass percentage, is uniformly mixed；
Step 3, the water that material gross mass 10% is added into mixed material carry out pelletizing, and wet bulb is placed on outdoor place certainly
So air-dry 1 day；
Pellet after natural air drying is first carried out 600 DEG C of preheating 10min, then carries out 1250 DEG C of high-temperature roastings by step 4
8min finally obtains ceramic product after cooling.
Ceramic product bulk density obtained by the present embodiment is 440kg/m3, belong to Superlight ceramsites.
Embodiment 2
It is a kind of to utilize the haydite and preparation method thereof for smelting the preparation of dangerous waste slag, comprising the following steps:
Step 1: iron vitriol slag, silica and flyash being passed through into Mechanical Crushing, sieved with 100 mesh sieve, the lower fine powder of sieve is taken；
Step 2 takes iron vitriol slag 30%, flyash 40%, silica 30% respectively by mass percentage, is uniformly mixed；
Step 3, the water that material gross mass 20% is added into mixed material carry out pelletizing, and wet bulb is placed on outdoor place certainly
So air-dry 2 days；
Pellet after natural air drying is first carried out 400 DEG C of preheating 30min, then carries out 1200 DEG C of high-temperature roastings by step 4
20min finally obtains ceramic product after cooling.
Ceramic product bulk density obtained by the present embodiment is 420kg/m3, belong to Superlight ceramsites.
Embodiment 3
It is a kind of to utilize the haydite and preparation method thereof for smelting the preparation of dangerous waste slag, comprising the following steps:
Step 1: the wastewater treatment sludge, silica and the flyash that generate in zinc regenerative process being passed through into Mechanical Crushing, cross 100
Mesh takes the lower fine powder of sieve；
Step 2 takes wastewater treatment sludge 35%, the flyash generated in zinc regenerative process respectively by mass percentage
35%, silica 30% is uniformly mixed；
Step 3, the water that material gross mass 25% is added into mixed material carry out pelletizing, and wet bulb is placed on outdoor place certainly
So air-dry 3 days；
Pellet after natural air drying is first carried out 500 DEG C of preheating 20min, then carries out 1150 DEG C of high-temperature roastings by step 4
15min finally obtains ceramic product after cooling.
Ceramic product bulk density obtained by the present embodiment is 410kg/m3, belong to Superlight ceramsites.
Embodiment 4
It is a kind of to utilize the haydite and preparation method thereof for smelting the preparation of dangerous waste slag, comprising the following steps:
Step 1: nickel-contained waste slag, iron vitriol slag, silica and flyash being passed through into Mechanical Crushing, sieved with 100 mesh sieve, is taken thin under sieve
Powder；
Step 2 takes nickel-contained waste slag 15%, iron vitriol slag 15%, flyash 40%, silica 30% respectively by mass percentage,
It is uniformly mixed；
Step 3, the water that material gross mass 20% is added into mixed material carry out pelletizing, and wet bulb is placed on outdoor place certainly
So air-dry 2 days；
Pellet after natural air drying is first carried out 450 DEG C of preheating 15min, then carries out 1200 DEG C of high-temperature roastings by step 4
20min finally obtains ceramic product after cooling.
Ceramic product bulk density obtained by the present embodiment is 430kg/m3, belong to Superlight ceramsites.
Embodiment 5
It is a kind of to utilize the haydite and preparation method thereof for smelting the preparation of dangerous waste slag, comprising the following steps:
Step 1: by the wastewater treatment sludge, silica and flyash that are generated in iron vitriol slag, zinc regenerative process by mechanical broken
It is broken, it sieves with 100 mesh sieve, takes the lower fine powder of sieve；
Step 2, the wastewater treatment sludge for taking iron vitriol slag 10% respectively by mass percentage, generating in zinc regenerative process
20%, flyash 40%, silica 30% are uniformly mixed；
Step 3, the water that material gross mass 25% is added into mixed material carry out pelletizing, and wet bulb is placed on outdoor place certainly
So air-dry 2 days；
Pellet after natural air drying is first carried out 500 DEG C of preheating 20min, then carries out 1150 DEG C of high-temperature roastings by step 4
20min finally obtains ceramic product after cooling.
Ceramic product bulk density obtained by the present embodiment is 415kg/m3, belong to Superlight ceramsites.
Embodiment 6
It is a kind of to utilize the haydite and preparation method thereof for smelting the preparation of dangerous waste slag, comprising the following steps:
Step 1: the wastewater treatment sludge, silica and flyash that generate in nickel-contained waste slag, iron vitriol slag, zinc regenerative process are passed through
Mechanical Crushing is crossed, is sieved with 100 mesh sieve, the lower fine powder of sieve is taken；
Step 2, take respectively by mass percentage nickel-contained waste slag 10%, iron vitriol slag 10%, generate in zinc regenerative process it is useless
Water treatment sludge 10%, flyash 40%, silica 30% are uniformly mixed；
Step 3, the water that material gross mass 15% is added into mixed material carry out pelletizing, and wet bulb is placed on outdoor place certainly
So air-dry 2 days；
Pellet after natural air drying is first carried out 600 DEG C of preheating 10min, then carries out 1230 DEG C of high-temperature roastings by step 4
18min finally obtains ceramic product after cooling.
Ceramic product bulk density obtained by the present embodiment is 425kg/m3, belong to Superlight ceramsites.
Above-described is only presently preferred embodiments of the present invention, not limitation invention.It should be understood that for the general of this field
For logical technical staff, under technical inspiration provided by the present invention, other equivalent improvement can also be made, this may be implemented
The purpose of invention, is regarded as protection scope of the present invention.
Claims (8)
1. a kind of utilize the haydite for smelting the preparation of dangerous waste slag, which is characterized in that it includes the raw material of following mass percent: smelting
Dangerous waste slag 25%~35%, silica 30%~35%, flyash 35%~40%.
2. haydite according to claim 1, which is characterized in that the smelting dangerous waste slag is generation during metal smelting nickel
Nickel-contained waste slag, the iron vitriol slag generated in Lead-Zinc Sintering Process, one of the wastewater treatment sludge generated in zinc regenerative process
Or a variety of mixtures.
3. a kind of preparation method using the haydite for smelting the preparation of dangerous waste slag as described in claim 1-2 is any, feature exist
In the method step includes:
(1) dangerous waste slag, silica and flyash will be smelted and passes through Mechanical Crushing, sieved with 100 mesh sieve, take the lower fine powder of sieve；
(2) dangerous waste slag, silica and flyash then will be smelted to be uniformly mixed；
(3) water is added into the mixed material obtained through step (2) and carries out pelletizing, and wet bulb is placed on outdoor place's natural air drying；
(4) pellet obtained through step (3) is first subjected to pre-heating drying, then carries out high-temperature roasting, finally made pottery after cooling
Grain.
4. according to the method described in claim 3, it is characterized in that, the water being added in the step (3) is 10%~25%, certainly
So air-dried number of days is 1~3 day.
5. according to the method described in claim 3, it is characterized in that, the diameter of wet bulb is 5~25mm in the step (3).
6. according to the method described in claim 3, it is characterized in that, preheating temperature is 400~600 DEG C in the step (4), in advance
Hot 10~30min of time.
7. according to the method described in claim 3, it is characterized in that, the step (4) high temperature maturing temperature be 1150 DEG C~
1250 DEG C, 8~20min of calcining time.
8. according to the method described in claim 3, it is characterized in that, the bulk density of the haydite is 410~440kg/m3。
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Cited By (5)
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| CN112028660A (en) * | 2020-08-24 | 2020-12-04 | 长沙中瓷资源循环利用有限公司 | Composition for preparing ultra-light ceramsite, ceramsite and preparation method thereof |
| CN112358279A (en) * | 2020-10-30 | 2021-02-12 | 煜环环境科技有限公司 | Method for preparing ultra-light ceramsite by using heavy organic contaminated soil and nonferrous metal smelting slag |
| CN113292353A (en) * | 2021-05-07 | 2021-08-24 | 荆门绿源环保产业发展有限公司 | Method for preparing ceramsite by using nickel wet-process smelting slag |
| CN113773051A (en) * | 2021-09-14 | 2021-12-10 | 中国科学院过程工程研究所 | Sulfur-fixing ceramsite and preparation method and application thereof |
| CN113979727A (en) * | 2021-11-30 | 2022-01-28 | 北京科技大学 | Method for preparing ceramic material by using secondary kiln slag of zinc extraction |
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| CN112028660B (en) * | 2020-08-24 | 2022-07-15 | 长沙中瓷资源循环利用有限公司 | Composition for preparing ultra-light ceramsite, ceramsite and preparation method thereof |
| CN112358279A (en) * | 2020-10-30 | 2021-02-12 | 煜环环境科技有限公司 | Method for preparing ultra-light ceramsite by using heavy organic contaminated soil and nonferrous metal smelting slag |
| CN113292353A (en) * | 2021-05-07 | 2021-08-24 | 荆门绿源环保产业发展有限公司 | Method for preparing ceramsite by using nickel wet-process smelting slag |
| CN113773051A (en) * | 2021-09-14 | 2021-12-10 | 中国科学院过程工程研究所 | Sulfur-fixing ceramsite and preparation method and application thereof |
| CN113979727A (en) * | 2021-11-30 | 2022-01-28 | 北京科技大学 | Method for preparing ceramic material by using secondary kiln slag of zinc extraction |
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