CN108046630A - It is a kind of using copper ashes magnetic separation slag and coal ash for manufacturing for the method for sintering-expanded haydite - Google Patents
It is a kind of using copper ashes magnetic separation slag and coal ash for manufacturing for the method for sintering-expanded haydite Download PDFInfo
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- CN108046630A CN108046630A CN201711429646.1A CN201711429646A CN108046630A CN 108046630 A CN108046630 A CN 108046630A CN 201711429646 A CN201711429646 A CN 201711429646A CN 108046630 A CN108046630 A CN 108046630A
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- haydite
- sintering
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to it is a kind of using copper ashes magnetic separation slag and coal ash for manufacturing for the method for sintering-expanded haydite, including：After swollen raw material stoving, fine grinding processing will be burnt, mixed in proportion, obtain sintering-expanded haydite base-material；Sintering-expanded haydite base-material is subjected to forming processes, obtains haydite pelletizing；Haydite pelletizing is dried, obtains dry pelletizing；Dry pelletizing is roasted, obtains sintering-expanded haydite.The present invention is primary raw material using copper ashes magnetic separation slag and flyash, sintering-expanded haydite is prepared by raw material proportioning and production technology, since copper ashes magnetic separation slag contains a certain amount of ferriferous oxide and carbon residue, so that copper ashes magnetic separation slag gas forming amount is larger, production process calcination temperature is low, and haydite swelling rate is high, is not only utilized the copper ashes stored up for a long time magnetic separation slag, cost of material is low, while saves the energy consumption in production process.Prepared sintering-expanded haydite density is low, intensity is high, can meet the requirement of lightweight concrete light-weight aggregate.
Description
Technical field
The present invention relates to field of inorganic nonmetallic material, and be more particularly related to it is a kind of using copper ashes magnetic separation slag and
Coal ash for manufacturing for sintering-expanded haydite method.
Background technology
Sintering-expanded haydite is a kind of ceramic granule of lightweight, is mostly spherical or elliposoidal, and inner structural features are in fine and closely woven honeycomb
Shape micropore, density are much smaller than sandstone, for heavy sandstone to be replaced to produce lightweight concrete.Lightweight concrete is a kind of new builds
The characteristics of material is small with density, and intensity is high, and heat-and sound-insulating performance is good is built, is widely promoted as energy-saving wall material
Using, also, lightweight concrete can significantly reduce building dead weight, improve the efficiency of energy utilization of building.
80% metallic copper produces for pyrometallurgical smelting in the world at present, and the intermediate product of copper smelting by pyrometallurgy is matte, matte smelting
The by-product of refining is copper ashes, and about 2.2 tons of copper ashes can be generated by often producing 1 ton of copper, and the main chemical compositions of copper ashes are FeO, SiO2、
CaO、Al2O3Deng, wherein Iron grade more than 40% have recyclable value.Copper ashes recycling iron resource generally use is directly also
It is former --- magnetic separation mode is recycled, and the by-product of the technique is copper ashes magnetic separation tailings.Copper ashes magnetic separation tailings is as a kind of secondary
Metallurgical solid waste, main chemical composition are SiO2、CaO、Al2O3, MgO etc., profit can be subject to as a kind of inorganic non-metallic material
With, but for the solid waste, there has been no excessive achievements in research at present.
Flyash is a kind of solid waste generated in coal-burning power plant's power generation process, main chemical compositions SiO2,
Al2O3、FeO、Fe2O3、CaO、TiO2Deng belonging to inorganic non-metallic material.Flyash is the larger Industry Waste of the current discharge capacity in China
One of slag, for China year bed drain purge up to 300,000,000 tons, total volume of cargo in storage reaches 2,000,000,000 tons at this stage.It is coal-fired with the development of power industry
The flyash discharge capacity of power plant increases year by year.Substantial amounts of flyash will generate airborne dust if not being pocessed, and pollute air；If
Being discharged into water system can cause river to silt up；Toxic chemical substance therein can also damage to human body and biology.Therefore, flyash
Processing and Utilizing question people is caused widely to pay attention to.For flyash, researcher both domestic and external expands substantial amounts of research
And great successes are achieved, flyash is applied primarily to the directions such as roadbed, cement, brickmaking at present.
In conclusion prior art discloses the method that some prepare sintering-expanded haydite, such as using architecture sediment, waterworks sludge
Or flyash is mixed with other raw materials and prepared, but existing method still generally existing raw material sources are limited, and production cost is handed over
The shortcomings of height, gas forming amount is small, and expansion rate is low, and calcination temperature is high, high energy consumption, haydite pelletizing expansion rate and the indexs such as density, intensity
It still needs to improve.Still belong to blank for the method that sintering-expanded haydite is prepared using copper ashes magnetic separation slag as primary raw material.
Based on this, the prior art still has much room for improvement.
The content of the invention
The present invention is in view of the above-mentioned problems, be designed to provide a kind of utilization copper ashes magnetic separation slag and coal ash for manufacturing for sintering-expanded haydite
Method.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
One embodiment of the invention discloses a kind of method using copper ashes magnetic separation slag and coal ash for manufacturing for sintering-expanded haydite, bag
Include following steps：
After step (1) will burn swollen raw material stoving, fine grinding processing, mixed in proportion, obtain sintering-expanded haydite base-material；
The sintering-expanded haydite base-material is carried out forming processes by step (2), obtains haydite pelletizing；
The haydite pelletizing is dried step (3), obtains dry pelletizing；
Step (4) roasts the dry pelletizing, obtains sintering-expanded haydite.
Preferably, it is described to burn in swollen raw material, by percentage to the quality,
It is further preferred that
It is further preferred that
It is further preferred that
Wherein, copper ashes magnetic separation slag be copper ashes that copper smelting by pyrometallurgy obtains after rotary hearth furnace is reduced directly, magneticly elect the tailings come,
Main component is SiO2、Al2O3, FeO, CaO, MgO etc., main chemical compositions content is shown in Table 1, and copper ashes magnetic separation slag is preferably changed
It learns component content and is shown in Table 2.
1 copper ashes magnetic separation slag main chemical compositions of table
2 preferred copper ashes magnetic separation slag main chemical compositions of table
Flyash is the discarded object of coal-burning power plant's output, main component SiO2、Al2O3、Fe2O3, CaO, MgO etc., ingredient
Content is shown in Table 3, and the preferred chemical composition content of flyash is shown in Table 4.
3 flyash main chemical compositions of table
4 preferred flyash main chemical compositions of table
The main chemical compositions scope of clay is shown in Table 5, and the preferred chemical composition content of clay is shown in Table 6.
5 clay main chemical compositions of table
6 preferably clay main chemical compositions of table
Potassium feldspar is that a kind of mineral resources main chemical compositions are predominantly SiO2、Al2O3、K2O.Its Contents of Main Components
Scope is shown in Table 7, and the preferred component content scope of potassium feldspar is shown in Table 8.
7 potassium feldspar main chemical compositions of table
8 preferred potassium feldspar main chemical compositions of table
Further, in step (1), the drying is less than 0.5% for the dry mass content to moisture.Preferably, will
It respectively burns swollen raw material and is respectively fed to drying box drying.
Further, in step (1), the fine grinding processing accounts for total weight of material for the material being finely ground to less than 200 mesh
More than 90%.
Further, in step (2), the forming processes are that the sintering-expanded haydite base-material is made in disc balling machine
Haydite pelletizing.Preferably, disk pelletizing process is：By mixed sintering-expanded haydite base-material, the inclination being packed on disc balling machine
Balling disk (-sc) in, while vaporific shower water is supplied by water pipe, balling disk (-sc) is rotated by machine driving, base-material is under the action of shower water
The rolling balling in disk.
Further, in step (3), the drying is less than 0.5% for the dry mass percentage to moisture.
Further, in step (3), the drying is dried for the haydite pelletizing is placed in 105-120 DEG C of drying baker
When dry 2-12 is small, when dry, it is preferable that thickness of feed layer is less than 10cm.
Further, in step (4), the roasting includes the dry pelletizing being fitted into roasting disk, is placed in roasting
In equipment, burnt till.Preferably, dry pelletizing being fitted into roasting disk, roasting disk roasts disk for heat safe aluminum oxide,
The magnesium oxide sand that disk layer overlay granularity is 0.1mm-0.5mm is roasted, the oxidation then haydite pelletizing being encased in roasting disk
On magnesia, the roasting disk for filling haydite pelletizing is placed in Muffle furnace, by Muffle furnace with certain roasting system from room temperature
To firing temperature, certain time is roasted, which is known as firing time, stops heating after roasting and naturally cools to 550
Below DEG C, take out roasting disk and be cooled to room temperature to obtain sintering-expanded haydite.The present embodiment can be prevented effectively by being laid with magnesium oxide sand
It sticks together between haydite and roasting disk, the preferred range of the thickness of magnesium oxide sand is 2-5mm, and the granularity of magnesium oxide sand is excessive can
Roasting disk space can be caused to utilize insufficient, too small then easy generation adhesion.The bed of material is blocked up and occur non-burn-through in order to prevent
Phenomenon, it is desirable that the haydite pelletizing bed of material is advisable for layer 2-3, about 2-4cm, and it is insufficient that the individual layer bed of material can cause roasting disk space to utilize.
Further, the firing temperature is 1100-1300 DEG C, and firing time is 20-60 minutes.
Further, the roasting includes：
In room temperature to 200 DEG C of sections, heat up 60 minutes；
At 200 DEG C, 15 minutes are kept the temperature；
In 200-580 DEG C of section, heat up 60 minutes；
At 580 DEG C, 15 minutes are kept the temperature；
In 580 DEG C-firing temperature section, heat up 60 minutes；
In firing temperature section, 20-60 minutes are kept the temperature；
Stop heating, natural cooling after roasting.
The beneficial effects of the invention are as follows：
The present invention is primary raw material using the waste coal ash of copper ashes magnetic separation slag and coal-burning power plant, passes through rational raw material
Proportioning and production technology prepare sintering-expanded haydite, since copper ashes magnetic separation slag contains a certain amount of ferriferous oxide and carbon residue so that copper ashes
Magnetic separation slag gas forming amount is larger, and production process calcination temperature is low, and haydite swelling rate is high, and sintering-expanded haydite is produced using copper ashes magnetic separation slag,
It can not only be utilized the copper ashes stored up for a long time magnetic separation slag, cost of material is low, while saves the energy consumption in production process.Institute
The sintering-expanded haydite density of preparation is low, intensity is high, can meet the requirement of lightweight concrete light-weight aggregate.
Description of the drawings
Fig. 1 is the process flow chart of one embodiment of the invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
Embodiment 1
Raw materials used chemical composition, with mass content radiometer, respectively as shown in table 1-1,1-2,1-3,1-4
Table 1-1 copper ashes magnetic separation slag main chemical compositions
Table 1-2 flyash main chemical compositions
Table 1-3 clay main chemical compositions
Table 1-4 potassium feldspar main chemical compositions
Haydite base-material charge ratio is：By weight, copper ashes magnetic separation slag be 40 parts by weight, 30 parts by weight of flyash, clay 20
Parts by weight, 10 parts by weight of feldspar in powder.
Processing step is as shown in Figure 1：
(1) pre-process：Copper ashes magnetic separation slag, flyash, clay, feldspar in powder are respectively fed to drying box drying, drying is extremely
Material moisture is less than 0.5%, carries out fine grinding as tested the dry material completed of mill with fine grinding equipment, is finely ground to less than 200 purposes
Material accounts for more than 90%.
(2) mix：The copper ashes magnetic separation slag of respective amount, flyash, clay, feldspar in powder are weighed in batch mixer by proportion scale
Sintering-expanded haydite base-material is made in middle mixing.
(3) it is molded：Haydite pelletizing is made in disc balling machine for mixed base-material, disk pelletizing process is：After mixing
Base-material, be packed into the inclined balling disk (-sc) on disc balling machine, while vaporific shower water supplied by water pipe, revolved by machine driving
Turn balling disk (-sc), base-material rolling balling in disk under the action of shower water.The manufactured a diameter of 8-12mm of haydite pelletizing.
(4) it is dry：Haydite pelletizing is placed in 105 DEG C of drying baker and dries 12h.
(5) roast：Haydite pelletizing is fitted into roasting disk, roasting disk roasts disk for aluminum oxide, roasts disk layer overlay
Granularity is the magnesium oxide sand of 0.1mm-0.5mm, and haydite pelletizing is encased in roasting disk, the roasting disk for filling haydite pelletizing is put
In Muffle furnace, by Muffle furnace with certain roasting system from room temperature to 1100 DEG C of firing temperature, 60min, roasting are roasted
After stop heating and naturally cool to less than 550 DEG C, take out and roast disk and be cooled to room temperature to obtain sintering-expanded haydite.
System is roasted described in above-mentioned method of roasting is：
A. in room temperature~200 DEG C section, heat up 60min；
B.200 DEG C heat preservation 15min
C. in 200~580 DEG C of sections, heat up 60min,
D.580 DEG C heat preservation 15min；
E.580~firing temperature section, heat up 60min,
F. firing time is kept the temperature under firing temperature,
G. heating is stopped after roasting, Muffle furnace naturally cools to less than 550 DEG C, takes out roasting disk and is cooled to room temperature
To sintering-expanded haydite.
The sintering-expanded haydite pelletizing expansion rate that the present embodiment obtains is 43.5%, and sintering-expanded haydite density is 610g/cm3, burn swollen
The intensity of haydite is 2.3MPa.
Embodiment 2
Raw materials used chemical composition, it is shown respectively by table 2-1,2-2,2-3,2-4
Table 2-1 copper ashes magnetic separation slag main chemical compositions
Table 2-2 flyash main chemical compositions
Table 2-3 clay main chemical compositions
Table 2-4 potassium feldspar main chemical compositions
Haydite base-material charge ratio is：By weight, copper ashes magnetic separation slag be 50 parts by weight, 25 parts by weight of flyash, clay 15
Parts by weight, 10 parts by weight of feldspar in powder.
Processing step is as shown in Figure 1：
(1) pre-process：Copper ashes magnetic separation slag, flyash, clay, feldspar in powder are respectively fed to drying box drying, drying is extremely
Material moisture is less than 0.5%, carries out fine grinding as tested the dry material completed of mill with fine grinding equipment, is finely ground to less than 200 purposes
Material accounts for more than 90%.
(2) mix：The copper ashes magnetic separation slag of respective amount, flyash, clay, feldspar in powder are weighed in batch mixer by proportion scale
Sintering-expanded haydite base-material is made in middle mixing.
(3) it is molded：Haydite pelletizing is made in disc balling machine for mixed base-material, disk pelletizing process is：After mixing
Base-material, be packed into the inclined balling disk (-sc) on disc balling machine, while vaporific shower water supplied by water pipe, revolved by machine driving
Turn balling disk (-sc), base-material rolling balling in disk under the action of shower water.The manufactured a diameter of 8-12mm of haydite pelletizing.
(4) it is dry：Haydite pelletizing is placed in 110 DEG C of drying baker and dries 4h.
(5) roast：Haydite pelletizing is fitted into roasting disk, roasting disk roasts disk for aluminum oxide, roasts disk layer overlay
Granularity is the magnesium oxide sand of 0.1mm-0.5mm, and haydite pelletizing is encased in roasting disk, the roasting disk for filling haydite pelletizing is put
In Muffle furnace, by Muffle furnace with certain roasting system from room temperature to 1200 DEG C of firing temperature, 40min, roasting are roasted
After stop heating and naturally cool to less than 550 DEG C, take out and roast disk and be cooled to room temperature to obtain sintering-expanded haydite.
System is roasted described in above-mentioned method of roasting is：
A. in room temperature~200 DEG C section, heat up 60min；
B.200 DEG C heat preservation 15min
C. in 200~580 DEG C of sections, heat up 60min,
D.580 DEG C heat preservation 15min；
E.580~firing temperature section, heat up 60min,
F. firing time is kept the temperature under firing temperature,
G. heating is stopped after roasting, Muffle furnace naturally cools to less than 550 DEG C, takes out roasting disk and is cooled to room temperature
To sintering-expanded haydite.
The sintering-expanded haydite pelletizing expansion rate that the present embodiment obtains is 48.6%, and sintering-expanded haydite density is 529g/cm3, burn swollen
The intensity of haydite is 1.58MPa.
Embodiment 3
Raw materials used chemical composition, it is shown respectively by table 3-1,3-2,3-3,3-4
Table 3-1 copper ashes magnetic separation slag main chemical compositions
Table 3-2 flyash main chemical compositions
Table 3-3 clay main chemical compositions
Table 3-4 potassium feldspar main chemical compositions
Haydite base-material charge ratio is：By weight, copper ashes magnetic separation slag be 60 parts by weight, 20 parts by weight of flyash, clay 15
Parts by weight, 5 parts by weight of feldspar in powder.
Processing step is as shown in Figure 1：
(1) pre-process：Copper ashes magnetic separation slag, flyash, clay, feldspar in powder are respectively fed to drying box drying, drying is extremely
Material moisture is less than 0.5%, carries out fine grinding as tested the dry material completed of mill with fine grinding equipment, is finely ground to less than 200 purposes
Material accounts for more than 90%.
(2) mix：The copper ashes magnetic separation slag of respective amount, flyash, clay, feldspar in powder are weighed in batch mixer by proportion scale
Sintering-expanded haydite base-material is made in middle mixing.
(3) it is molded：Haydite pelletizing is made in disc balling machine for mixed base-material, disk pelletizing process is：After mixing
Base-material, be packed into the inclined balling disk (-sc) on disc balling machine, while vaporific shower water supplied by water pipe, revolved by machine driving
Turn balling disk (-sc), base-material rolling balling in disk under the action of shower water.The manufactured a diameter of 8-12mm of haydite pelletizing.
(4) it is dry：Haydite pelletizing is placed in 120 DEG C of drying baker and dries 2h.
(5) roast：Haydite pelletizing is fitted into roasting disk, roasting disk roasts disk for aluminum oxide, roasts disk layer overlay
Granularity is the magnesium oxide sand of 0.1mm-0.5mm, and haydite pelletizing is encased in roasting disk, the roasting disk for filling haydite pelletizing is put
In Muffle furnace, by Muffle furnace with certain roasting system from room temperature to 1300 DEG C of firing temperature, 20min, roasting are roasted
After stop heating and naturally cool to less than 550 DEG C, take out and roast disk and be cooled to room temperature to obtain sintering-expanded haydite.
System is roasted described in above-mentioned method of roasting is：
A. in room temperature~200 DEG C section, heat up 60min；
B.200 DEG C heat preservation 15min
C. in 200~580 DEG C of sections, heat up 60min,
D.580 DEG C heat preservation 15min；
E.580~firing temperature section, heat up 60min,
F. firing time is kept the temperature under firing temperature,
G. heating is stopped after roasting, Muffle furnace naturally cools to less than 550 DEG C, takes out roasting disk and is cooled to room temperature
To sintering-expanded haydite.
The sintering-expanded haydite pelletizing expansion rate that the present embodiment obtains is 50.3%, and sintering-expanded haydite density is 422g/cm3, burn swollen
The intensity of haydite is 1.24MPa.
Embodiment 4
Difference from Example 2 is that haydite base-material charge ratio is：By weight, copper ashes magnetic separation slag is 30 parts by weight,
50 parts by weight of flyash.
The sintering-expanded haydite pelletizing expansion rate that the present embodiment obtains is 45.6%, and sintering-expanded haydite density is 534g/cm3, burn swollen
The intensity of haydite is 1.76MPa.
Embodiment 5
Difference from Example 2 is that haydite base-material charge ratio is：By weight, copper ashes magnetic separation slag is 80 parts by weight,
10 parts by weight of flyash, 5 parts by weight of clay, 20 parts by weight of feldspar in powder.
The sintering-expanded haydite pelletizing expansion rate that the present embodiment obtains is 51.9%, and sintering-expanded haydite density is 409g/cm3, burn swollen
The intensity of haydite is 1.29MPa.
Embodiment 6
Difference from Example 2 is that haydite base-material charge ratio is：By weight, copper ashes magnetic separation slag is 65 parts by weight,
40 parts by weight of flyash, 30 parts by weight of clay, 15 parts by weight of feldspar in powder.
The sintering-expanded haydite pelletizing expansion rate that the present embodiment obtains is 53.6%, and sintering-expanded haydite density is 394g/cm3, burn swollen
The intensity of haydite is 1.18MPa.
Embodiment 7
Difference from Example 2 is that haydite base-material charge ratio is：By weight, copper ashes magnetic separation slag is 45 parts by weight,
25 parts by weight of flyash, 25 parts by weight of clay.
The sintering-expanded haydite pelletizing expansion rate that the present embodiment obtains is 48.6%, and sintering-expanded haydite density is 588g/cm3, burn swollen
The intensity of haydite is 1.95MPa.
Embodiment 8
Difference from Example 2 is that haydite base-material charge ratio is：By weight, copper ashes magnetic separation slag is 55 parts by weight,
30 parts by weight of flyash, 10 parts by weight of clay, 8 parts by weight of feldspar in powder.
The sintering-expanded haydite pelletizing expansion rate that the present embodiment obtains is 52.3%, and sintering-expanded haydite density is 492g/cm3, burn swollen
The intensity of haydite is 1.34MPa.
Embodiment 9
Difference from Example 2 is that haydite base-material charge ratio is：By weight, copper ashes magnetic separation slag is 50 parts by weight,
25 parts by weight of flyash, 13 parts by weight of feldspar in powder.
The sintering-expanded haydite pelletizing expansion rate that the present embodiment obtains is 49.6%, and sintering-expanded haydite density is 484g/cm3, burn swollen
The intensity of haydite is 1.66MPa.
Table 9
As shown in Table 9, by sintering-expanded haydite made from the method for the present invention, pelletizing expansion rate is high, density is low, intensity is high,
Parameters can meet the requirement of lightweight concrete light-weight aggregate.
The foregoing is merely presently preferred embodiments of the present invention, is not used for limiting the practical range of the present invention；If it does not take off
It from the spirit and scope of the present invention, modifies or equivalently replaces the present invention, should all cover in the claims in the present invention
Among protection domain.
Claims (10)
1. it is a kind of using copper ashes magnetic separation slag and coal ash for manufacturing for the method for sintering-expanded haydite, which is characterized in that comprise the following steps：
After step (1) will burn swollen raw material stoving, fine grinding processing, mixed in proportion, obtain sintering-expanded haydite base-material；
The sintering-expanded haydite base-material is carried out forming processes by step (2), obtains haydite pelletizing；
The haydite pelletizing is dried step (3), obtains dry pelletizing；
Step (4) roasts the dry pelletizing, obtains sintering-expanded haydite.
2. according to the method described in claim 1, it is characterized in that, described burn in swollen raw material, by percentage to the quality,
3. according to the method described in claim 1, it is characterized in that, in step (1), the drying is the dry quality to moisture
Content is less than 0.5%.
4. method according to claim 1 or 2, which is characterized in that in step (1), the fine grinding processing is small to be finely ground to
More than the 90% of total weight of material is accounted in the material of 200 mesh.
5. according to the method described in claim 1, it is characterized in that, in step (2), the forming processes are to burn swollen pottery by described
Haydite pelletizing is made in grain base-material in disc balling machine.
6. according to the method described in claim 1, it is characterized in that, in step (3), the drying is the dry quality to moisture
Percentage composition is less than 0.5%.
7. according to the method described in claim 6, it is characterized in that, in step (3), the drying is to put the haydite pelletizing
When drying 2-12 is small in 105-120 DEG C of drying baker.
8. according to the method described in claim 1, it is characterized in that, in step (4), the roasting is included the dry pelletizing
It is fitted into roasting disk, is placed in roasting apparatus, is burnt till.
9. according to the method described in claim 8, it is characterized in that, the firing temperature is 1100-1300 DEG C, firing time is
20-60 minutes.
10. according to the method described in claim 9, it is characterized in that, the roasting includes：
In room temperature to 200 DEG C of sections, heat up 60 minutes；
At 200 DEG C, 15 minutes are kept the temperature；
In 200-580 DEG C of section, heat up 60 minutes；
At 580 DEG C, 15 minutes are kept the temperature；
In 580 DEG C-firing temperature section, heat up 60 minutes；
In firing temperature section, 20-60 minutes are kept the temperature；
Stop heating, natural cooling after roasting.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112939496A (en) * | 2021-02-03 | 2021-06-11 | 合肥工业大学 | Microwave sintering method of clay ceramsite |
| CN115093242A (en) * | 2022-07-01 | 2022-09-23 | 陈松靖 | High-strength copper tailing ceramsite and preparation method thereof |
| CN115159998A (en) * | 2022-07-05 | 2022-10-11 | 武汉科技大学 | Refractory silica brick and method for preparing refractory silica brick by using copper slag |
-
2017
- 2017-12-26 CN CN201711429646.1A patent/CN108046630A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112939496A (en) * | 2021-02-03 | 2021-06-11 | 合肥工业大学 | Microwave sintering method of clay ceramsite |
| CN112939496B (en) * | 2021-02-03 | 2022-07-22 | 合肥工业大学 | Microwave sintering method of clay ceramsite |
| CN115093242A (en) * | 2022-07-01 | 2022-09-23 | 陈松靖 | High-strength copper tailing ceramsite and preparation method thereof |
| CN115159998A (en) * | 2022-07-05 | 2022-10-11 | 武汉科技大学 | Refractory silica brick and method for preparing refractory silica brick by using copper slag |
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