CN109912294A - A kind of foamed ceramic material pre-oxidation manufacturing method - Google Patents
A kind of foamed ceramic material pre-oxidation manufacturing method Download PDFInfo
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- CN109912294A CN109912294A CN201811095106.9A CN201811095106A CN109912294A CN 109912294 A CN109912294 A CN 109912294A CN 201811095106 A CN201811095106 A CN 201811095106A CN 109912294 A CN109912294 A CN 109912294A
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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 foamed ceramic materials to pre-oxidize manufacturing method, includes the following steps: (1) feedstock processing；(2) it pre-oxidizes: mixed powder is put into revolution kiln drying calcining, the mixed powder in stirring calcining with the rotation of rotary kiln in rotary kiln, obtain it is fully oxidized, calcination temperature be 500-1000 DEG C, time 20-40 minute obtains aoxidizing thorough calcinated powder material；(3) foaming firing；(4) finished product is processed.
Description
Technical field
The present invention relates to a kind of foamed ceramic materials to pre-oxidize manufacturing method.
Background technique
Foamed ceramic is a kind of building material product, mainly uses waste ceramic brick, industrial residue, coal powder, dressing plant's tail
Mine, mud of cleaning up the pond etc. are raw material, by special foam process, produce the products such as light cellular partition board, external wall insulation, are had light
The advantages that matter, high-strength, sound insulation, waterproof is the environmental protection project for reducing solid waste pollution, resource regeneration.Current manufacturer
All it is the production technology production for taking comparison traditional, is all to prepare raw material by formula to wear into mud in the ball mill, with by spraying
Dry or filters pressing drying beats powder into powder, and then powder is tiled to the enterprising kiln of refractory slab and is burnt into, the powder without calcining is directly flat
Paving firing, powder is more, spread thick, internal moisture is high, easy to oxidize into kiln rear surface, and internal moisture volatilization and oxidation are slowly.It is raw
The greatest problem of production process is exactly that firing time is long, and energy consumption is high, at high cost.Oxidization time is very long, has elongated firing week significantly
Phase increases energy consumption, and production capacity is very low, improves cost, thus affects the product competitiveness of enterprise and the economic benefit of enterprise,
It popularizes and promotes in the market for also affecting such product simultaneously.
Summary of the invention
It is an object of the invention in place of overcome the deficiencies in the prior art, provide a kind of foamed ceramic material pre-oxidation system
Method is made, solves the problems in above-mentioned background technique.
The technical solution adopted by the present invention to solve the technical problems is: a kind of foamed ceramic material pre-oxidation manufacturer
Method includes the following steps:
(1) feedstock processing: taking raw material to mix with foam powder, and in grinding in ball mill, obtaining fineness is 250 mesh, tail over≤
1.5% mud, mud are put into mud pit after being sieved with vibrating screen, and slurry in mud pit is made by spray drying tower drying
Grain, obtains the mixed powder of raw material；The mixed powder moisture content is 5~8%；
(2) pre-oxidize: by mixed powder be put into revolution kiln drying calcining, the mixed powder in rotary kiln with return
The rotation of rotary kiln and stir calcined oxide, the rotative speed of the rotary kiln is 3~5 revs/min, calcination temperature 500-1000
DEG C, time 20-40 minute, the calcinated powder material for obtaining surface oxidation is stored to filler bin；
(3) foaming firing: the enterprising kiln of the refractory slab that above-mentioned calcinated powder material is placed in kiln car or roller kilns stick frame is burnt into,
Firing temperature is about 1100-1200 DEG C, and firing time is 7~14 hours, and kiln discharge obtains semifinished material；
(4) finished product is processed: above-mentioned semifinished material is carried out to the foamed ceramic plate for being cut into needs.
In a preferred embodiment of the present invention, the raw material and foam powder are mixed with the ratio of mass ratio 30-35:5, wherein
Raw material components are made of by quality point 68-72 parts of waste ceramic brick, 9-11 parts of cullet, 14-16 parts of sludge.
In a preferred embodiment of the present invention, the raw material and foam powder are mixed with the ratio of mass ratio 32:5, the original
Material component is made of by quality point 70 parts of waste ceramic brick, 10 parts of cullet, 15 parts of sludge.
In a preferred embodiment of the present invention, the calcining tail gas of rotary kiln is transmitted back to spray drying in the step (2)
Tower carries out secondary use；
In a preferred embodiment of the present invention, the kiln tail gas of firing is transmitted back to rotary kiln in the step (3) and is carried out
Secondary use.
In a preferred embodiment of the present invention, slurry in mud pit is formed by filter press filters pressing in the step (1)
Mud cake is shredded through vacuum pugging shredding machine and is dried, obtains the mixed powder of raw material by mud cake；
In a preferred embodiment of the present invention, preoxidation time is about 20~30 minutes in the step (2).
In a preferred embodiment of the present invention, Shao Shi Liang≤2% of calcinated powder material in the step (2).
In a preferred embodiment of the present invention, firing temperature is 1150 DEG C in the step (3).
The technical program compared with the background art, it has the following advantages:
(1) pre-oxidation process is increased newly, required physical-chemical reaction into kiln before being burnt into when by original firing product
It completes, since powder is state of dynamically stirring in rotary kiln, moisture evaporation and oxidation rate are fast, the thermal efficiency is high, oxidation is equal
It is even thorough.Powder by pre-oxidation can directly heat up into kiln firing, and blowing temperature is mentioned in the short time, burning is greatly shortened
At the period, kiln production capacity is improved, reduces energy consumption；
(2) powder by calcining is burnt into kiln, and kiln tail gas moisture is low, and temperature is high, can be sent to calcining kiln and calcining
Hot gas merges, and is dried, is calcined to powder, and calcining kiln exhaust gas is used for spray drying tower again and carries out spray drying powder processed (calcining
Kiln is equivalent to the hot-blast stove of drying tower), or dried for cachaza, achieve the purpose that waste heat makes full use of, in this way, energy saving
Effect is obvious, product cost sharp fall.
Detailed description of the invention
Fig. 1 is 1 process flow chart of embodiment.
Specific embodiment
Embodiment 1
Fig. 1 is please referred to, a kind of foamed ceramic material of the present embodiment pre-oxidizes manufacturing method, includes the following steps:
(1) feedstock processing: taking raw material to mix with foam powder, and in grinding in ball mill, obtaining fineness is 250 mesh, tail over≤
1.5% mud, mud are put into mud pit after being sieved with vibrating screen, and slurry in mud pit is made by spray drying tower drying
Grain, obtains the mixed powder of raw material；The mixed powder moisture content 5~8%.
In the present embodiment, spray drying can also be substituted by following manner: forming mud cake by filter press filters pressing, mud cake is passed through
The chopping drying of vacuum pugging shredding machine, obtains the mixed powder of raw material；
Wherein, the raw material and foam powder are mixed with the ratio of mass ratio 32:5, the raw material components by quality respectively by
70 parts of waste ceramic brick, 10 parts of cullet, 15 parts of sludge compositions.
(2) pre-oxidize: by mixed powder be put into revolution kiln drying calcining, the mixed powder in rotary kiln with return
The rotation of rotary kiln and stir calcined oxide, the rotative speed of the rotary kiln is 3~5 revs/min, calcination temperature 500-1000
DEG C, the time 30 minutes, the calcinated powder material for obtaining surface oxidation was stored to filler bin.
The rotary kiln includes cylinder, wheel belt, support roller, gear wheel, sealing device and transmission device, mixed powder by kiln hood into
Enter cylinder, drives barrel body rotation through driving wheel, powder stirs calcined oxide with the rotation of rotary kiln, sent again by kiln tail later
Out, stirring pre-oxidation can make powder directly contact high temperature and oxygen, and powder quick heating, oxidation is fast, oxidation is uniform；
The calcining tail gas of rotary kiln is transmitted back to spray drying tower in the step (2) and carries out secondary use, by pre- oxygen
The powder of change is burnt into kiln, and kiln tail gas moisture is low, and temperature is high, can be sent to calcining kiln and calcining hot gas merges, to powder into
Row drying, calcining, calcining kiln exhaust gas are used for spray drying tower again and carry out being spray-dried powder processed that (calcining kiln is equivalent to the heat of drying tower
Wind furnace), or dried for cachaza, achieve the purpose that waste heat makes full use of；
(3) foaming calcining: the enterprising kiln of the refractory slab that above-mentioned calcinated powder material is placed in kiln car or roller kilns stick frame is burnt into,
It is 1150 or so DEG C at temperature is burnt, firing time is 7~14 hours, and kiln discharge obtains semifinished material；
Burning kiln tail gas is transmitted back to rotary kiln in the step (3) and carries out secondary use.
(4) finished product is processed: above-mentioned semifinished material is carried out to the foamed ceramic plate for being cut into needs.
The above is only the preferred embodiment of the present invention, the range implemented of the present invention that therefore, it cannot be limited according to, i.e., according to
Equivalent changes and modifications made by the invention patent range and description, should still be within the scope of the present invention.
Claims (9)
1. a kind of foamed ceramic material pre-oxidizes manufacturing method, which comprises the steps of:
(1) feedstock processing: taking raw material to mix with foam powder, and in grinding in ball mill, obtaining fineness is 250 meshes, tail over≤
1.5% mud, mud are put into mud pit after being sieved with vibrating screen, and slurry in mud pit is made by spray drying tower drying
Grain, obtains the mixed powder of raw material；The mixed powder moisture content is 5~8%；
(2) pre-oxidize: by mixed powder be put into revolution kiln drying calcining, the mixed powder in rotary kiln with rotary kiln
Rotation and stir calcined oxide, the slewing rate of the rotary kiln is 3~5 revs/min, and calcination temperature is 500-1000 DEG C,
It time 20-40 minute, obtains aoxidizing thorough calcinated powder material and stores to filler bin；
(3) foaming firing: the enterprising kiln of the refractory slab that above-mentioned calcinated powder material is placed in kiln car or roller kilns stick frame is burnt into, firing
Temperature is 1100-1200 DEG C, and firing time is 7~14 hours, and kiln discharge obtains semifinished material；
(4) finished product is processed: above-mentioned semifinished material is carried out to the foamed ceramic plate for being cut into needs.
2. a kind of foamed ceramic material according to claim 1 pre-oxidizes manufacturing method, it is characterised in that: the raw material with
Foam powder is mixed with the ratio of mass ratio 30-35:5, and wherein raw material components are by quality point by 68-72 parts of waste ceramic brick, cullet
9-11 parts, 14-16 parts of sludge compositions.
3. a kind of foamed ceramic material according to claim 1 pre-oxidizes manufacturing method, it is characterised in that: the raw material with
Foam powder is mixed with the ratio of mass ratio 32:5, and the raw material components are by quality point by 70 parts of waste ceramic brick, 10 parts of cullet, dirt
15 parts of mud compositions.
4. a kind of foamed ceramic material according to claim 1 pre-oxidizes manufacturing method, it is characterised in that: the step
(2) the calcining tail gas of rotary kiln is transmitted back to spray drying tower in and carries out secondary use.
5. a kind of foamed ceramic material according to claim 1 pre-oxidizes manufacturing method, it is characterised in that: the step
(3) firing product kiln tail gas is transmitted back to rotary kiln in and carries out secondary use.
6. a kind of foamed ceramic material according to claim 1 pre-oxidizes manufacturing method, it is characterised in that: the step
(1) slurry in mud pit is formed into mud cake by filter press filters pressing in, mud cake is shredded through vacuum pugging shredding machine and is dried, is obtained
The mixed powder of raw material.
7. a kind of foamed ceramic material according to claim 1 pre-oxidizes manufacturing method, it is characterised in that: the step
(2) preoxidation time is 20~30 minutes in.
8. a kind of foamed ceramic material according to claim 1 pre-oxidizes manufacturing method, it is characterised in that: the step
(2) Liang≤2%. Shao Shi of calcinated powder material in
9. a kind of foamed ceramic material according to claim 1 pre-oxidizes manufacturing method, it is characterised in that: the step
(3) firing temperature is 1150 DEG C in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811095106.9A CN109912294A (en) | 2018-09-19 | 2018-09-19 | A kind of foamed ceramic material pre-oxidation manufacturing method |
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| CN201811095106.9A CN109912294A (en) | 2018-09-19 | 2018-09-19 | A kind of foamed ceramic material pre-oxidation manufacturing method |
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