CN108706554A - A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles - Google Patents
A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles Download PDFInfo
- Publication number
- CN108706554A CN108706554A CN201810712687.XA CN201810712687A CN108706554A CN 108706554 A CN108706554 A CN 108706554A CN 201810712687 A CN201810712687 A CN 201810712687A CN 108706554 A CN108706554 A CN 108706554A
- Authority
- CN
- China
- Prior art keywords
- red mud
- ardealite
- lining brick
- machine press
- steel ladles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
-
- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/448—Sulphates or sulphites
-
- 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
-
- 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
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- 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
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention provides the techniques of a kind of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, include the following steps：Raw material are made in ardealite, red mud, 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 residue is obtained into sulfide through flotation；Sulfuric acid is made in sulfide processing；Isolated solution prepares aluminium oxide；Aluminium oxide obtained and white alundum powder, Brown Alundum particle and aluminum sulfate mixed grind are obtained into mixed material；Mixed material is sent into feed bin and close 3-5h, is molded using friction press, molding rear enclosed is dry in infrared dryer, cooling Machine press carbon-free lining brick for steel ladles.The present invention has relieving haperacidity and preparation Machine press carbon-free lining brick for steel ladles at low cost, waste residue utilization rate is high, it is simple for process, and the Machine press carbon-free lining brick for steel ladles for using aluminium oxide to prepare have the characteristics that without containing carbon, higher hot strength, density is big, compressive resistance is high, with long service life.
Description
Technical field
The present invention relates to the techniques of a kind of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, belong to metallurgicalization
Work field.
Background technology
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.
Red mud is to refine the waste generated in alumina process with bauxite.It is in crimson color muddy because it is rich in iron
And it gains the name.1 ton of aluminium oxide is often produced, 1.0-2.0 tons of red mud is about generated.The year yield of China's red mud is about 1.0 hundred million tons, is tired out
It is about 500,000,000 tons to count volume of cargo in storage.
Iron and steel smelting technology personnel pay attention to the carburetting in steel during metallurgical technology in various refractory materials further
Come, it is desirable that the use for reducing carbon containing refractory to the greatest extent in smelting low carbon fine steel grade technical process increases molten steel with reducing
Carbon adverse effect.In order to meet the requirement of Ferrous Metallurgy technique, refractory products are gradually to efficient, energy saving, ring
Guarantor's type converts, and the exploitation of ladle Carbon-free refractories receives the extensive attention of refractory material scientific research personnel with application.Existing
There are the Machine press carbon-free lining brick for steel ladles in technology, with high temperature break resistant intensity is high, the coefficient of expansion is small, corrosion resistance is good and chipping resistance
Property good characteristic, but be to use a large amount of aluminium oxide and other originals mostly in the production of existing Machine press carbon-free lining brick for steel ladles
Material processing is prepared, and the complex manufacturing technology of existing aluminium oxide, production cost are high, cause price of aluminium oxide expensive, greatly
Increase the production cost of Machine press carbon-free lining brick for steel ladles.
It is now currently, seldom for the technology of the comprehensive utilization of ardealite and red mud, it is substantially focused on building materials and paves the way
Traditional field, which results in the waste of a large amount of high value ingredients in ardealite and red mud, added value is very low.And by ardealite and
Red mud comprehensive utilization comes relieving haperacidity, while the technique of coproduction Machine press carbon-free lining brick for steel ladles, has not been reported.
Goal of the invention
The object of the present invention is to provide the techniques of a kind of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles.This
Invention has relieving haperacidity and preparation Machine press carbon-free lining brick for steel ladles at low cost, and waste residue utilization rate is high, simple for process, and uses aluminium oxide
The Machine press carbon-free lining brick for steel ladles of preparation have without containing carbon, higher hot strength, density is big, compressive resistance is high, uses the longevity
Order long feature.
Technical scheme of the present invention
A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, includes the following steps：
A, ardealite, red mud, 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, by residue isolated step B through flotation, sulfide is detached to obtain；
D, the step C 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；
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 and calcination are washed, aluminium oxide is obtained；
F, aluminium oxide made from step E being placed in mixed grind in kolleroang with white alundum powder, Brown Alundum particle and aluminum sulfate must mix
Material；
G, mixed material made from step F is sent into feed bin, closes 3-5h, is molded using friction press, be molded rear enclosed
It is dry in infrared dryer, obtain Machine press carbon-free lining brick for steel ladles after cooling.
In the technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles above-mentioned, in step A, described is red
Mud is the red mud that alumina producing Bayer process generates；The additive is sodium carbonate, sodium sulphate or caustic soda；The modifying agent is nothing
Bituminous coal, carbon or gangue.
In the technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles above-mentioned, in step A, the life
In material, ardealite and red mud are according to 1:The ratio of 0.8-2.2 weight ratios mixes, and 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 the 10-25% of raw material total weight.
In the technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles 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 red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles above-mentioned
Roasting time 1-2h at 1000-1350 DEG C.
In the technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles 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 red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles above-mentioned, in step E, calcination be
Calcination time 3-5h at 800-1200 DEG C of temperature.
In the technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles above-mentioned, in step F, by weight
Meter, the mixed material include 30-40 parts of aluminium oxide, 15-20 parts of white alundum powder, 20-25 parts of Brown Alundum particle and aluminum sulfate 8-
13 parts.
It is by step in step F in the technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles above-mentioned
Aluminium oxide made from E obtains mixture with mixed grind 20-30min in white alundum powder, Brown Alundum particle and aluminum sulfate merging kolleroang
Material.
It is described infrared in step G in the technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles above-mentioned
The drying temperature of line dry kiln is 200-250 DEG C, drying time 45-50h.
The present invention is by by ardealite and red mud reaction, recombination, making utility.The net reaction of principle is：
CaSO4（Ardealite）+ Na2O·SiO2·Al2O3（Red mud）→ Na2O·Al2O3 + CaO·SiO2↓ + [Liu ]
From the reaction equation it is found that with the SiO in the CaO and red mud in ardealite2Generate calcium orthosilicate（ CaO·SiO2↓）Afterwards,
Obtain soluble fabulous sodium aluminate（Na2O·Al2O3）.[ in reaction equation;Liu ], refer to by raw material doping and modification
Agent technique, the metal sulfide of generation；After leaching the sodium aluminate in clinker, obtained sediment flotation be can be obtained into metal sulphur
Compound.
Advantageous effect
1, the present invention and is added after additive and modifying agent by using ardealite and red mud as raw material, in high-temperature roasting
Technique under obtain the clinker of main silicate-containing, aluminate and sulfide, and the main component of the aluminate is sodium aluminate, will
Sodium aluminate it is water-soluble go out after may be recovered, and after solid residue flotation, obtain sulfide, sulfuric acid prepared using sulfide,
Aluminium oxide is prepared by the sodium aluminate of recycling, aluminium oxide and other raw materials are prepared into Machine press carbon-free lining brick for steel ladles, due to
Mainly using ardealite and red mud as raw material in entire technique, add other a small amount of substances, therefore, greatly reduce relieving haperacidity and
The cost input of Machine press carbon-free lining brick for steel ladles.The utilization rate for also greatly increasing ardealite and waste red mud residues, to alleviate phosphorus stone
Cream and red mud have important contribution to the pollution of environment.
2, 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.
3, 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 Machine press carbon-free lining brick for steel ladles, and it is big, resistance to without containing carbon, higher hot strength, density that machine presses carbon-free lining brick to have
Compressive Strength height, feature with long service life, and Machine press carbon-free lining brick for steel ladles are at low cost.
Further to prove that the effect of the present invention, inventor have done following experiment.
1, the detection of Machine press carbon-free lining brick for steel ladles
Inventor by the Machine press carbon-free lining brick for steel ladles in following five groups of embodiments respectively to it into line density, the resistance to pressure of room temperature
Degree, 1500 DEG C of compressive resistances and 1500 DEG C of lines become detection, and are compared with existing magnesia carbon brick and aluminium-magnesia carbon brick on the market, specifically
Testing result is as follows：
Pass through 1 magnesia carbon brick of table and aluminium-magnesia carbon brick testing result table and 2 Machine press carbon-free lining brick for steel ladles testing result table of the present invention of table
Comparative analysis obtains, and Machine press carbon-free lining brick for steel ladles machine of the invention presses carbon-free lining brick not contain carbon, and in 1500 DEG C of high temperature,
Compressive resistance increases substantially, and isochrone becomes smaller, and with higher hot strength, density is big, compressive resistance is high, service life
Long feature.
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 red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, steps are as follows：
A, ardealite, Bayer red mud, 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 of degree；Wherein, ardealite and Bayer red mud are according to 1:The ratio of 0.8 weight ratio is mixed
It closes, sodium carbonate adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, it is anthracitic mixed
Composition and division in a proportion example 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, calcination time 5h obtains aluminium oxide at 800 DEG C of temperature；
F, by mixed grind 20min in aluminium oxide made from step E and white alundum powder, Brown Alundum particle and aluminum sulfate merging kolleroang
Obtain mixed material；Wherein by weight, the mixed material includes 30 parts of aluminium oxide, 15 parts of white alundum powder, Brown Alundum particle
20 parts and 8 parts of aluminum sulfate；
G, by made from step F mixed material be sent into feed bin in, close 3h, be molded using friction press, molding rear enclosed in
In infrared dryer, at 200 DEG C after dry 50h, it is cooled to room temperature to obtain Machine press carbon-free lining brick for steel ladles.
Embodiment 2：A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, steps are as follows：
A, ardealite, Bayer red mud, sodium sulphate and carbon 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 Bayer red mud are according to 1:The ratio of 1.2 weight ratios mixes, and burns
Alkali adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:The mixed proportion of 1 addition, carbon is raw material
The 15% 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 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, calcination time 4h obtains aluminium oxide at 1000 DEG C of temperature；
F, by mixed grind 25min in aluminium oxide made from step E and white alundum powder, Brown Alundum particle and aluminum sulfate merging kolleroang
Obtain mixed material；Wherein by weight, the mixed material includes 30 parts of aluminium oxide, 20 parts of white alundum powder, Brown Alundum particle
20 parts and 13 parts of aluminum sulfate；
G, by made from step F mixed material be sent into feed bin in, close 4h, be molded using friction press, molding rear enclosed in
In infrared dryer, at 220 DEG C after dry 48h, it is cooled to room temperature to obtain Machine press carbon-free lining brick for steel ladles.
Embodiment 3：A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, steps are as follows：
A, ardealite, Bayer red mud, 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 Bayer red mud are according to 1:The ratio of 1.5 weight ratios mixes,
Sodium carbonate adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixing ratio of gangue
Example 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, calcination time 3h obtains aluminium oxide at 1100 DEG C of temperature；
F, by mixed grind 30min in aluminium oxide made from step E and white alundum powder, Brown Alundum particle and aluminum sulfate merging kolleroang
Obtain mixed material；Wherein by weight, the mixed material includes 35 parts of aluminium oxide, 17 parts of white alundum powder, Brown Alundum particle
23 parts and 10 parts of aluminum sulfate；
G, by made from step F mixed material be sent into feed bin in, close 5h, be molded using friction press, molding rear enclosed in
In infrared dryer, at 240 DEG C after dry 45h, it is cooled to room temperature to obtain Machine press carbon-free lining brick for steel ladles.
Embodiment 4：A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, steps are as follows：
A, ardealite, Bayer red mud, 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 of degree；Wherein, ardealite and Bayer red mud 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, the mixed proportion of gangue
It is the 25% of raw material 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, calcination time 3h obtains aluminium oxide at 1200 DEG C of temperature；
F, by mixed grind 25min in aluminium oxide made from step E and white alundum powder, Brown Alundum particle and aluminum sulfate merging kolleroang
Obtain mixed material；Wherein by weight, the mixed material includes 40 parts of aluminium oxide, 17 parts of white alundum powder, Brown Alundum particle
25 parts and 10 parts of aluminum sulfate；
G, by made from step F mixed material be sent into feed bin in, close 4h, be molded using friction press, molding rear enclosed in
In infrared dryer, at 240 DEG C after dry 48h, it is cooled to room temperature to obtain Machine press carbon-free lining brick for steel ladles.
Embodiment 5：A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, steps are as follows：
A, ardealite, Bayer red mud, 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 of degree；Wherein, ardealite and Bayer red mud are according to 1:The ratio of 2.2 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
It is the 20% 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 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, calcination time 5h obtains aluminium oxide at 1200 DEG C of temperature；
F, by mixed grind 30min in aluminium oxide made from step E and white alundum powder, Brown Alundum particle and aluminum sulfate merging kolleroang
Obtain mixed material；Wherein by weight, the mixed material includes 40 parts of aluminium oxide, 20 parts of white alundum powder, Brown Alundum particle
25 parts and 13 parts of aluminum sulfate；
G, by made from step F mixed material be sent into feed bin in, close 5h, be molded using friction press, molding rear enclosed in
In infrared dryer, at 250 DEG C after dry 50h, it is cooled to room temperature to obtain Machine press carbon-free lining brick for steel ladles.
Claims (10)
1. the technique of a kind of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, which is characterized in that including walking as follows
Suddenly：
A, ardealite, red mud, 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, by residue isolated step B through flotation, sulfide is detached to obtain；
D, the step C 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；
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 and calcination are washed, aluminium oxide is obtained；
F, aluminium oxide made from step E being placed in mixed grind in kolleroang with white alundum powder, Brown Alundum particle and aluminum sulfate must mix
Material；
G, mixed material made from step F is sent into feed bin, closes 3-5h, is molded using friction press, be molded rear enclosed
It is dry in infrared dryer, obtain Machine press carbon-free lining brick for steel ladles after cooling.
2. the technique of ardealite according to claim 1 and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, feature
It is：In step A, the red mud is the red mud that alumina producing Bayer process generates；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 red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, feature
It is：In step A, in the raw material, ardealite and red mud are according to 1:The ratio of 0.8-2.2 weight ratios mixes, and additive adds
Add ratio by contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:The mixed proportion of 1 addition, modifying agent is raw material
The 10-25% of total weight.
4. the technique of ardealite according to claim 1 and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, 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 red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, 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 red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, 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 red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, feature
It is：In step E, calcination is the calcination time 3-5h at 800-1200 DEG C of temperature.
8. the technique of ardealite according to claim 1 and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, feature
It is：In step F, by weight, the mixed material includes 30-40 parts of aluminium oxide, 15-20 parts of white alundum powder, Brown Alundum
8-13 parts of 20-25 parts of particle and aluminum sulfate.
9. the technique of ardealite according to claim 1 and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, feature
It is：In step F, being will be in aluminium oxide made from step E and white alundum powder, Brown Alundum particle and aluminum sulfate merging kolleroang
Mixed grind 20-30min obtains mixed material.
10. the technique of ardealite according to claim 1 and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles, feature
It is：In step G, the drying temperature of the infrared dryer is 200-250 DEG C, drying time 45-50h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810712687.XA CN108706554A (en) | 2018-07-03 | 2018-07-03 | A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810712687.XA CN108706554A (en) | 2018-07-03 | 2018-07-03 | A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108706554A true CN108706554A (en) | 2018-10-26 |
Family
ID=63872253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810712687.XA Pending CN108706554A (en) | 2018-07-03 | 2018-07-03 | A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108706554A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3944648A (en) * | 1973-07-07 | 1976-03-16 | Aluterv Aluminiumipari Tervezo Vallalat | Method for processing bauxites |
| CN101434403A (en) * | 2008-12-16 | 2009-05-20 | 重庆市博赛矿业（集团）有限公司 | Novel method for processing calx sodica sintered alumina by dry method |
| CN103183516A (en) * | 2013-04-10 | 2013-07-03 | 济南钢铁集团耐火材料有限责任公司 | Machine pressing carbon-free lining brick for steel ladles |
| CN103539467A (en) * | 2013-10-16 | 2014-01-29 | 马鞍山利尔开元新材料有限公司 | Mechanically-pressed carbon-free corundum spinel ladle brick as well as preparation method thereof |
| CN104370533A (en) * | 2014-10-27 | 2015-02-25 | 合肥市东庐机械制造有限公司 | Low-cost ceramic cutting tool material and preparation method thereof |
| CN105776150A (en) * | 2014-12-23 | 2016-07-20 | 中国科学院过程工程研究所 | Method for cooperative activation of fly ash and decomposition of gypsum for recovery of sulfur resource |
-
2018
- 2018-07-03 CN CN201810712687.XA patent/CN108706554A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3944648A (en) * | 1973-07-07 | 1976-03-16 | Aluterv Aluminiumipari Tervezo Vallalat | Method for processing bauxites |
| CN101434403A (en) * | 2008-12-16 | 2009-05-20 | 重庆市博赛矿业（集团）有限公司 | Novel method for processing calx sodica sintered alumina by dry method |
| CN103183516A (en) * | 2013-04-10 | 2013-07-03 | 济南钢铁集团耐火材料有限责任公司 | Machine pressing carbon-free lining brick for steel ladles |
| CN103539467A (en) * | 2013-10-16 | 2014-01-29 | 马鞍山利尔开元新材料有限公司 | Mechanically-pressed carbon-free corundum spinel ladle brick as well as preparation method thereof |
| CN104370533A (en) * | 2014-10-27 | 2015-02-25 | 合肥市东庐机械制造有限公司 | Low-cost ceramic cutting tool material and preparation method thereof |
| CN105776150A (en) * | 2014-12-23 | 2016-07-20 | 中国科学院过程工程研究所 | Method for cooperative activation of fly ash and decomposition of gypsum for recovery of sulfur resource |
Non-Patent Citations (2)
| Title |
|---|
| 厉衡隆等: "《铝冶炼生产技术手册》", 31 July 2011, 冶金工业出版社 * |
| 张彰: "《工厂应用化学》", 31 August 1981, 云南人民出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Balomnenos et al. | The ENEXAL bauxite residue treatment process: industrial scale pilot plant results | |
| CN103074456A (en) | Method for recycling iron from waste red mud in alumina production | |
| CN103030312B (en) | Treatment method of magnesium metal smelting waste slag | |
| CN108752005A (en) | The technique that a kind of ardealite and red mud prepare composite ceramic material co-producing sulfuric acid | |
| CN107365161B (en) | Copper composite magnesia-chrome brick and manufacturing method thereof | |
| CN108623293A (en) | The technique that a kind of ardealite and red mud prepare high white pottery ceramic material coproduction acid | |
| CN108793815A (en) | A kind of technique of ardealite and red mud relieving haperacidity coproduction concrete accelerator | |
| CN108623291A (en) | A kind of technique preparing refractory castable for ladle coproduction acid | |
| CN108706554A (en) | A kind of technique of ardealite and red mud relieving haperacidity coproduction Machine press carbon-free lining brick for steel ladles | |
| CN108484174A (en) | A kind of technique using ardealite and red mud relieving haperacidity coproduction porous silicon carbide ceramic | |
| CN108751966A (en) | A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining | |
| CN108546096A (en) | A kind of technique of ardealite and red mud preparation high tenacity ceramic nozzle material coproduction acid | |
| CN108794024A (en) | The technique that a kind of ardealite and low product bauxite prepare saggar repair materials coproduction acid | |
| CN108706555A (en) | A kind of technique of ardealite and low product bauxite ceramic cutting tool material coproduction acid | |
| CN108558374A (en) | A kind of technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid | |
| CN108751145A (en) | A kind of sanitary ware preparing sour coproduction artificial marble technique | |
| CN110066921A (en) | A kind of method of red mud dealkalization production ferro-titanium and clinker | |
| CN108689388A (en) | A kind of method of ardealite and red mud relieving haperacidity coproduction ceramic body brightening agent | |
| CN108751141A (en) | A kind of method of ardealite and red mud relieving haperacidity coproduction modified phosphate binder | |
| CN108658112A (en) | It is a kind of with the technique of ardealite and red mud aluminium coproduction urea-base compound fertilizer | |
| CN111167831B (en) | Method for catalytically decomposing aluminosilicate | |
| CN108706550A (en) | A kind of technique of ardealite and red mud refractory plate coproduction acid | |
| CN108751144A (en) | A kind of technique of ardealite and low product bauxite overfiring-proof coating coproduction acid | |
| CN108793954A (en) | A kind of technique preparing domestic ceramics mud coproduction acid | |
| CN108706553A (en) | A kind of technique of ardealite and coal ash for manufacturing glass bending modular brick coproduction acid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181026 |
|
| RJ01 | Rejection of invention patent application after publication |