CN108558374A - A kind of technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid - Google Patents
A kind of technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid Download PDFInfo
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Abstract
The present invention provides the techniques of a kind of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, include the following steps：Raw material are made in ardealite, flyash, additive and modifying agent mixed grinding, is sent into kiln and roasts to obtain clinker；Clinker is dissolved out, and is separated by solid-liquid separation；Isolated solution prepares aluminium oxide；Ball milling will be carried out after aluminium oxide obtained and silicon carbide, zirconium oxide and silicon powder dispensing, batch mixing, is crushed, is dried to obtain mixture a；Paraffin and oleic acid are melted to obtain mixture b；After mixing by mixture a and mixture b, hot die-casting molding is sintered to obtain High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic；Isolated residue is obtained into sulfide through flotation；Sulfuric acid is made in sulfide processing.The present invention, which has, prepares High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic and relieving haperacidity is at low cost, and waste residue utilization rate is high, and the High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic prepared using alumina powder has the advantages that high intensity, high abrasion, heat safe, and acid-making process is simple.
Description
Technical field
The present invention relates to the techniques of a kind of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, belong to metallurgicalization
Work field.
Background technology
Aluminium oxide ceramics is the main class of electronic ceramics and vacuum is opened the light, one of the leading products of vacuum condenser.
Aluminium oxide has higher thermal conductivity, high-melting-point, high insulation, low-k, low dielectric loss and good encapsulation work
The features such as skill, adaptability.And contain a large amount of aluminium oxide in the raw materials for production of existing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic, and existing oxygen
Complex manufacturing technology, the production cost for changing aluminium powder are high, lead to alumina powder price, greatly increase high abrasion-proof and high temperature resistant pottery
The production cost of porcelain.
Ardealite refer in phosphoric acid production with sulfuric acid treating phosphorite when the solid slag that generates, main component is sulfuric acid
Calcium（CaSO4）, content generally can reach 70-90% or so.In addition, ardealite also contains plurality of impurities：Undecomposed phosphorus ore,
Phosphoric acid, calcirm-fluoride, iron, aluminium compound, acid non-soluble substance, organic matter of non-washes clean etc..Ardealite is discharged every year about in China
20000000 tons, add up nearly hundred million tons of discharge capacity.For utilization rate of the ardealite in terms of building materials less than 5%, a large amount of gypsum stacks occupy soil
Ground seriously pollutes environment.
China is a big coal country, using coal as power generation substantially fuel.The energy industry stable development in China, power generation
Ability annual growth is 7.3%, and the rapid development of power industry brings sharply increasing for flyash discharge capacity, Hazards in Power Plant
The flyash total amount discharged every year increases year by year, and nineteen ninety-five flyash discharge capacity is up to 1.25 hundred million tons, 2000 about 1.5 hundred million
Ton, was up to 300,000,000 tons, the development of the national economy and ecological environment to China cause huge pressure by 2010.
It is now currently, seldom for the technology of the comprehensive utilization of ardealite and flyash, it is substantially focused on building materials and paves the way
Etc. traditional fields, which results in the waste of a large amount of high value ingredients in ardealite and flyash, added value is very low.And by phosphorus stone
Cream and total utilization of PCA are come High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic processed, while the technique of coproduction acid, have not been reported.
Goal of the invention
The object of the present invention is to provide the techniques of a kind of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid.This
Invention has preparation High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic and relieving haperacidity at low cost, and waste residue utilization rate is high, and the height prepared using alumina powder is resistance to
Mill refractory ceramics has the advantages that high intensity, high abrasion, heat safe, and acid-making process is simple.
Technical scheme of the present invention
A kind of technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, includes the following steps：
A, ardealite, flyash, additive and modifying agent are mixed and is ground and raw material are made, be sent into roasting in kiln, clinker is made；
B, clinker made from step A is dissolved out, and is separated by solid-liquid separation；
C, CO is added into solution isolated step B2It is no longer generated to white precipitate, it is clear after then filtering out white precipitate
Drying and calcination are washed, alumina powder is crushed to obtain；
D, ball milling, batch mixing, crushing, dry will be carried out after alumina powder made from step C and silicon carbide, zirconium oxide and silicon powder dispensing
It is dry to obtain mixture a；Paraffin and oleic acid are heated to 110-130 DEG C and obtain mixture b to fusing；By mixture a with mix
Object b after mixing, using hot die-casting molding, is sintered to obtain High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic；
E, by residue isolated step B through flotation, sulfide is detached to obtain；
F, the step E sulfide isolated is placed under the oxygen-enriched environment of 30-50%, 3-5h is roasted at 800-1200 DEG C, roasted
The flue gas of generation is absorbed using the concentrated sulfuric acid after vanadic anhydride catalysis reaction, sulfuric acid is made.
In the technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid above-mentioned, in step A, the addition
Agent is sodium carbonate, sodium sulphate or caustic soda；The modifying agent is anthracite, carbon or gangue.
In the technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid above-mentioned, in step A, the life
In material, ardealite and flyash are according to 1:The ratio of 0.8-1.8 weight ratios mixes, and additive adding proportion is pressed contained in raw material
Na2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent are the 10-25% of raw material total weight.
In the technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid above-mentioned, in step A, the kiln is
Industrial rotary kiln, Industry Tunnel Kiln or industrial shaft kiln.
It is in temperature in step A in the technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid above-mentioned
Roasting time 1-2h at 1000-1350 DEG C.
In the technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid above-mentioned, in step B, the clinker
It is dissolved out after first water mill；It is 4-6 that liquid when dissolution, which consolidates volume ratio,:1.
In the technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid above-mentioned, in step C, calcination be
Calcination time 3-5h at 800-1200 DEG C of temperature.
In the technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid above-mentioned, in step D, by weight
Meter, the High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic include 70-90 parts of alumina powder, 30-40 parts of silicon carbide, 20-30 parts of zirconium oxide, silicon powder
0.4-0.6 parts of 1-3 parts, 10-15 parts of paraffin and oleic acid.
In the technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid above-mentioned, in step D, the mixing
The granularity of object a is 200-300 mesh.
In the technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid above-mentioned, in step D, the hot pressing
The pressure of type casting moulding is 0.5-1MP, and temperature is 70-80 DEG C；The sintering is to be sintered 3-4h in the case where temperature is 1500-1600 DEG C.
The present invention is by by ardealite and flyash reaction, recombination, making utility.The net reaction of principle
For：
CaSO4（Ardealite）+ Na2O·SiO2·Al2O3（Flyash）→ Na2O·Al2O3 + CaO·SiO2↓+[sulphur]
From the reaction equation it is found that with the SiO in the CaO and flyash in ardealite2Generate calcium orthosilicate（ CaO·SiO2↓）
Afterwards, soluble fabulous sodium aluminate is obtained（Na2O·Al2O3）.[sulphur] in reaction equation refers to by raw material doping and changing
Property agent technique, the metal sulfide of generation；After leaching the sodium aluminate in clinker, obtained sediment flotation be can be obtained into metal
Sulfide.
Advantageous effect
1, the present invention and is added after additive and modifying agent by using ardealite and flyash as raw material, in high temperature roasting
The clinker of main silicate-containing, aluminate and sulfide is obtained under the technique of burning, and the main component of the aluminate is sodium aluminate,
By sodium aluminate it is water-soluble go out after may be recovered, and after solid residue flotation, obtain sulfide, sulphur prepared using sulfide
Acid,
Aluminium oxide is prepared by the sodium aluminate of recycling, aluminium oxide and other raw materials are prepared into High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic, due to whole
Mainly using ardealite and flyash as raw material in a technique, add other a small amount of substances, therefore, greatly reduce relieving haperacidity and
The cost input of High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic.The utilization rate for also greatly increasing ardealite and fine coal waste slag, to alleviate phosphorus stone
Cream and flyash have important contribution to the pollution of environment.
2, the present invention by raw material by roasting after, obtained ingredient is clearly demarcated, aluminium mainly with aluminic acid na form exist, profit
The characteristic of water is highly soluble in sodium aluminate, can be simple and quick be isolated and be used to prepare aluminium oxide, by aluminium oxide with it is other
Raw material prepares High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic, and High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic has the advantages that high quality, wearability and stability are high, and
High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic is at low cost.
3, the present invention obtains after the solid residue flotation in technique sulfide, sulfuric acid, relieving haperacidity is prepared using sulfide
Cost it is low, acid-making process is simple.
Further to prove that the effect of the present invention, inventor have done following experiment.
1, the experiment of High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic
Inventor carries out wear-resisting and hot test, test result to the High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic in following five groups of embodiments respectively
It is shown in Table 1；
It is obtained by 1 High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic testing result table analysis of the present invention of table, High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic of the invention
Have the advantages that high quality, wearability and stability are high.
Specific implementation mode
With reference to embodiment, the present invention is further illustrated, but is not intended as the foundation limited the present invention.
The embodiment of the present invention
Embodiment 1：A kind of technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, steps are as follows：
A, ardealite, flyash, sodium carbonate and anthracite are mixed and is ground and raw material are made, be sent into industrial rotary kiln in temperature
Clinker is made in roasting time 1.5h at 1000 DEG C；Wherein, ardealite and flyash are according to 1:The ratio of 0.8 weight ratio mixes, carbon
Sour sodium adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, anthracitic mixed proportion
It is the 10% of raw material total weight；
B, clinker made from step A is consolidated into volume ratio as 4 with liquid:1 carries out water mill dissolution, and is separated by solid-liquid separation；
C, by residue isolated step B through flotation, sulfide is detached to obtain；
D, the step C sulfide isolated is placed under 30% oxygen-enriched environment, 5h is roasted at 800 DEG C, roast the flue gas of generation
After vanadic anhydride catalysis reaction, is absorbed using the concentrated sulfuric acid, sulfuric acid is made；
E, CO is added into solution isolated step B2It is no longer generated to white precipitate, it is clear after then filtering out white precipitate
Drying is washed, alumina powder is crushed to obtain after calcination time 5h at 800 DEG C of temperature；
F, ball milling, batch mixing, crushing, dry will be carried out after alumina powder made from step E and silicon carbide, zirconium oxide and silicon powder dispensing
It is dry to obtain mixture a；Paraffin and oleic acid are heated to 110 DEG C and obtain mixture b to fusing；Mixture a and mixture b are mixed
It is 0.5MP in pressure, temperature is hot die-casting molding at 70 DEG C, in the case where temperature is 1500 DEG C, is sintered get Gao Nai under 3h after closing uniformly
Grind refractory ceramics；Wherein by weight, the High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic include 70 parts of alumina powder, 30 parts of silicon carbide,
0.4 part of 20 parts of zirconium oxide, 1 part of silicon powder, 10 parts of paraffin and oleic acid；The granularity of the mixture a is 200 mesh.
Embodiment 2：A kind of technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, steps are as follows：
A, ardealite, flyash, sodium sulphate and carbon are mixed and is ground and raw material are made, be sent into industrial rotary kiln in temperature 1200
Clinker is made in roasting time 2h at DEG C；Wherein, ardealite and flyash are according to 1:The ratio of 1.1 weight ratios mixes, caustic soda addition
Ratio presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:The mixed proportion of 1.2 additions, carbon is raw material gross weight
The 15% of amount；
B, clinker made from step A is consolidated into volume ratio as 5 with liquid:1 carries out water mill dissolution, and is separated by solid-liquid separation；
C, by residue isolated step B through flotation, sulfide is detached to obtain；
D, the step C sulfide isolated is placed under 35% oxygen-enriched environment, 4h is roasted at 900 DEG C, roast the flue gas of generation
After vanadic anhydride catalysis reaction, is absorbed using the concentrated sulfuric acid, sulfuric acid is made；
E, CO is added into solution isolated step B2It is no longer generated to white precipitate, it is clear after then filtering out white precipitate
Drying is washed, alumina powder is crushed to obtain after calcination time 4h at 1000 DEG C of temperature；
F, ball milling, batch mixing, crushing, dry will be carried out after alumina powder made from step E and silicon carbide, zirconium oxide and silicon powder dispensing
It is dry to obtain mixture a；Paraffin and oleic acid are heated to 120 DEG C and obtain mixture b to fusing；Mixture a and mixture b are mixed
It is 0.7MP in pressure, temperature is hot die-casting molding at 80 DEG C, in the case where temperature is 1550 DEG C, is sintered get Gao Nai under 4h after closing uniformly
Grind refractory ceramics；Wherein by weight, the High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic include 80 parts of alumina powder, 35 parts of silicon carbide,
0.5 part of 25 parts of zirconium oxide, 2 parts of silicon powder, 12 parts of paraffin and oleic acid；The granularity of the mixture a is 300 mesh.
Embodiment 3：A kind of technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, steps are as follows：
A, ardealite, flyash, caustic soda and gangue are mixed and is ground and raw material are made, be sent into industrial rotary kiln in temperature
Clinker is made in roasting time 1.5h at 1300 DEG C；Wherein, ardealite and flyash are according to 1:The ratio of 1.3 weight ratios mixes, carbon
Sour sodium adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of gangue
It is the 20% of raw material total weight；
B, clinker made from step A is consolidated into volume ratio as 6 with liquid:1 carries out water mill dissolution, and is separated by solid-liquid separation；
C, by residue isolated step B through flotation, sulfide is detached to obtain；
D, the step C sulfide isolated is placed under 45% oxygen-enriched environment, 3h is roasted at 1000 DEG C, roast the cigarette of generation
Gas is absorbed using the concentrated sulfuric acid after vanadic anhydride catalysis reaction, sulfuric acid is made；
E, CO is added into solution isolated step B2It is no longer generated to white precipitate, it is clear after then filtering out white precipitate
Drying is washed, alumina powder is crushed to obtain after calcination time 3h at 1100 DEG C of temperature；
F, ball milling, batch mixing, crushing, dry will be carried out after alumina powder made from step E and silicon carbide, zirconium oxide and silicon powder dispensing
It is dry to obtain mixture a；Paraffin and oleic acid are heated to 130 DEG C and obtain mixture b to fusing；Mixture a is mixed with mixture b
It is 0.8MP in pressure, temperature is hot die-casting molding at 80 DEG C, in the case where temperature is 1600 DEG C, is sintered under 3h and obtains high abrasion after uniform
Refractory ceramics；Wherein by weight, the High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic includes 85 parts of alumina powder, 38 parts of silicon carbide, oxygen
Change 0.6 part of 25 parts of zirconium, 3 parts of silicon powder, 13 parts of paraffin and oleic acid；The granularity of the mixture a is 200 mesh.
Embodiment 4：A kind of technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, steps are as follows：
A, ardealite, flyash, sodium carbonate and gangue are mixed and is ground and raw material are made, be sent into industrial rotary kiln in temperature
Clinker is made in roasting time 1h at 1350 DEG C；Wherein, ardealite and flyash are according to 1:The ratio of 1.6 weight ratios mixes, caustic soda
Adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of gangue are made a living
Expect the 25% of total weight；
B, clinker made from step A is consolidated into volume ratio as 5 with liquid:1 carries out water mill dissolution, and is separated by solid-liquid separation；
C, by residue isolated step B through flotation, sulfide is detached to obtain；
D, the step C sulfide isolated is placed under 45% oxygen-enriched environment, 3h is roasted at 1200 DEG C, roast the cigarette of generation
Gas is absorbed using the concentrated sulfuric acid after vanadic anhydride catalysis reaction, sulfuric acid is made；
E, CO is added into solution isolated step B2It is no longer generated to white precipitate, it is clear after then filtering out white precipitate
Drying is washed, alumina powder is crushed to obtain after calcination time 3h at 1200 DEG C of temperature；
F, ball milling, batch mixing, crushing, dry will be carried out after alumina powder made from step E and silicon carbide, zirconium oxide and silicon powder dispensing
It is dry to obtain mixture a；Paraffin and oleic acid are heated to 120 DEG C and obtain mixture b to fusing；Mixture a is mixed with mixture b
It is 0.9MP in pressure, temperature is hot die-casting molding at 70 DEG C, in the case where temperature is 1500 DEG C, is sintered under 4h and obtains high abrasion after uniform
Refractory ceramics；Wherein by weight, the High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic includes 85 parts of alumina powder, 33 parts of silicon carbide, oxygen
Change 0.5 part of 28 parts of zirconium, 2 parts of silicon powder, 13 parts of paraffin and oleic acid；The granularity of the mixture a is 300 mesh.
Embodiment 5：A kind of technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, steps are as follows：
A, ardealite, flyash, sodium sulphate and anthracite are mixed and is ground and raw material are made, be sent into industrial rotary kiln in temperature
Clinker is made in roasting time 2h at 1200 DEG C；Wherein, ardealite and flyash are according to 1:The ratio of 1.8 weight ratios mixes, caustic soda
Adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, anthracitic mixed proportion are made a living
Expect the 20% of total weight；
B, clinker made from step A is consolidated into volume ratio as 4 with liquid:1 carries out water mill dissolution, and is separated by solid-liquid separation；
C, by residue isolated step B through flotation, sulfide is detached to obtain；
D, the step C sulfide isolated is placed under 50% oxygen-enriched environment, 4h is roasted at 1100 DEG C, roast the cigarette of generation
Gas is absorbed using the concentrated sulfuric acid after vanadic anhydride catalysis reaction, sulfuric acid is made；
E, CO is added into solution isolated step B2It is no longer generated to white precipitate, it is clear after then filtering out white precipitate
Drying is washed, alumina powder is crushed to obtain after calcination time 5h at 1200 DEG C of temperature；
F, ball milling, batch mixing, crushing, dry will be carried out after alumina powder made from step E and silicon carbide, zirconium oxide and silicon powder dispensing
It is dry to obtain mixture a；Paraffin and oleic acid are heated to 130 DEG C and obtain mixture b to fusing；Mixture a is mixed with mixture b
It is 1MP in pressure after uniformly, temperature is hot die-casting molding at 80 DEG C, in the case where temperature is 1600 DEG C, is sintered under 4h and is sintered get Gao Nai
Grind refractory ceramics；Wherein by weight, the High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic include 90 parts of alumina powder, 40 parts of silicon carbide,
0.6 part of 30 parts of zirconium oxide, 3 parts of silicon powder, 15 parts of paraffin and oleic acid；The granularity of the mixture a is 300 mesh.
Claims (10)
1. the technique of a kind of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, which is characterized in that including walking as follows
Suddenly：
A, ardealite, flyash, additive and modifying agent are mixed and is ground and raw material are made, be sent into roasting in kiln, clinker is made；
B, clinker made from step A is dissolved out, and is separated by solid-liquid separation；
C, CO is added into solution isolated step B2It is no longer generated to white precipitate, it is clear after then filtering out white precipitate
Drying and calcination are washed, alumina powder is crushed to obtain；
D, ball milling, batch mixing, crushing, dry will be carried out after alumina powder made from step C and silicon carbide, zirconium oxide and silicon powder dispensing
It is dry to obtain mixture a；Paraffin and oleic acid are heated to 110-130 DEG C and obtain mixture b to fusing；By mixture a with mix
Object b after mixing, using hot die-casting molding, is sintered to obtain High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic；
E, by residue isolated step B through flotation, sulfide is detached to obtain；
F, the step E sulfide isolated is placed under the oxygen-enriched environment of 30-50%, 3-5h is roasted at 800-1200 DEG C, roasted
The flue gas of generation is absorbed using the concentrated sulfuric acid after vanadic anhydride catalysis reaction, sulfuric acid is made.
2. the technique of ardealite according to claim 1 and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, feature
It is：In step A, the additive is sodium carbonate, sodium sulphate or caustic soda；The modifying agent is anthracite, carbon or gangue.
3. the technique of ardealite according to claim 1 and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, feature
It is：In step A, in the raw material, ardealite and flyash are according to 1:The ratio of 0.8-1.8 weight ratios mixes, additive
Adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent are made a living
Expect the 10-25% of total weight.
4. the technique of ardealite according to claim 1 and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, feature
It is：In step A, the kiln is industrial rotary kiln, Industry Tunnel Kiln or industrial shaft kiln.
5. the technique of ardealite according to claim 1 and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, feature
It is：It is the roasting time 1-2h at 1000-1350 DEG C of temperature in step A.
6. the technique of ardealite according to claim 1 and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, feature
It is：In step B, dissolved out after clinker elder generation water mill；It is 4-6 that liquid when dissolution, which consolidates volume ratio,:1.
7. the technique of ardealite according to claim 1 and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, feature
It is：In step C, calcination is the calcination time 3-5h at 800-1200 DEG C of temperature.
8. the technique of ardealite according to claim 1 and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, feature
It is：In step D, by weight, the High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic includes 70-90 parts of alumina powder, silicon carbide 30-40
Part, 20-30 parts of zirconium oxide, 1-3 parts of silicon powder, 10-15 parts of paraffin and 0.4-0.6 parts of oleic acid.
9. the technique of ardealite according to claim 1 and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, feature
It is：In step D, the granularity of the mixture a is 200-300 mesh.
10. the technique of ardealite according to claim 1 and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid, feature
It is：In step D, the pressure of the hot die-casting molding is 0.5-1MP, and temperature is 70-80 DEG C；The sintering is to be in temperature
At 1500-1600 DEG C, it is sintered 3-4h.
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| CN114890448A (en) * | 2022-06-09 | 2022-08-12 | 北京科技大学 | Resource treatment method of desulfurized gypsum |
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