CN108751966A - A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining - Google Patents

A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining Download PDF

Info

Publication number
CN108751966A
CN108751966A CN201810713076.7A CN201810713076A CN108751966A CN 108751966 A CN108751966 A CN 108751966A CN 201810713076 A CN201810713076 A CN 201810713076A CN 108751966 A CN108751966 A CN 108751966A
Authority
CN
China
Prior art keywords
red mud
furnace lining
ardealite
hard heat
insulated plate
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
Application number
CN201810713076.7A
Other languages
Chinese (zh)
Inventor
陈肖虎
毛小浩
赵平源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou University
Original Assignee
Guizhou University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guizhou University filed Critical Guizhou University
Priority to CN201810713076.7A priority Critical patent/CN108751966A/en
Publication of CN108751966A publication Critical patent/CN108751966A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16Shaped 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 silicates other than clay
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00Sulfur; Compounds thereof
    • C01B17/69Sulfur trioxide; Sulfuric acid
    • C01B17/74Preparation
    • C01B17/76Preparation by contact processes
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00Compounds of aluminium
    • C01F7/02Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/141Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent
    • C01F7/142Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent with carbon dioxide
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00Compounds of aluminium
    • C01F7/02Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/44Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/441Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/62204Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/6303Inorganic additives
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66Monolithic refractories or refractory mortars, including those whether or not containing clay
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427Silicates other than clay, e.g. water glass
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/349Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/449Organic acids, e.g. EDTA, citrate, acetate, oxalate
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74Physical characteristics
    • C04B2235/77Density
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9607Thermal properties, e.g. thermal expansion coefficient

Abstract

The present invention provides the techniques of a kind of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining, include the following steps:Raw material are made in ardealite, red mud, additive and modifying agent mixed grinding, clinker is roasted to obtain in kiln;Clinker is dissolved out, and is separated by solid-liquid separation;Isolated solution prepares aluminium oxide;Aluminium oxide obtained is uniformly mixed to obtain mixed material with vermiculite power, floating bead, clay powder, silicon powder, expanded perlite, aluminate cement, calcium lignosulfonate, waterproofing agent of organosilicon and water;Mixed material is through sizing, exhaust, compacting, pressurize, demoulding, maintenance, dry the hard heat-insulated plate of furnace lining;Isolated residue is obtained into sulfide through flotation;Sulfuric acid is made in sulfide processing.The present invention, which has, prepares the hard heat-insulated plate of furnace lining and relieving haperacidity is at low cost, waste residue utilization rate is high, the hard heat-insulated harden structure intensity of furnace lining of preparation is high, reheating linear change rate on reheating is low, thermal coefficient is low, stable physical property under the moisture-proof, condition of high temperature, the simple feature of acid-making process.

Description

A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining
Technical field
The present invention relates to the techniques of a kind of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining, belong to chemical metallurgy neck Domain.
Background technology
Furnace lining is the furnace wall of the stove for being refined to metal, due to often in high temperature service, generally with resistance to Fiery material is built by laying bricks or stones.Furnace lining in the smelting process of extremely complex, fierce physical-chemical reaction, be subjected to high-temperature molten steel with The chemical erosion of slag still suffers from the souring of molten steel, slag, furnace gas, and adds the mechanical impacts etc. of steel scrap.Existing The hard heat-insulated plate of furnace lining of technology is prepared using alumina powder and other Raw material processings, has structural strength height, reheating line The advantage that change rate is low, thermal coefficient is low, moisture-proof;The stable physical property under hot operation state, but existing alumina powder Complex manufacturing technology, production cost it is high, lead to alumina powder price, greatly increase the production of the hard heat-insulated plate of furnace lining Cost.
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.
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 comprehensively utilizes come the hard heat-insulated plate of furnace lining processed, while the technique of coproduction acid, 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 the hard heat-insulated plate coproduction acid of red mud furnace lining.The present invention With the hard heat-insulated plate of furnace lining is prepared and relieving haperacidity is at low cost, waste residue utilization rate is high, the hard heat-insulated harden structure intensity of furnace lining of preparation Height, reheating linear change rate on reheating is low, thermal coefficient is low, stable physical property under the moisture-proof, condition of high temperature, the simple feature of acid-making process.
Technical scheme of the present invention
A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining, 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, 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, by alumina powder made from step C and vermiculite power, floating bead, clay powder, silicon powder, expanded perlite, aluminate cement, Calcium lignosulfonate, waterproofing agent of organosilicon and water are uniformly mixed to obtain mixed material;
E, by made from step D mixed material be added shaper after, shaper is placed in forcing press, through exhaust, compacting, Pressurize makes mixed material reach dense state, and demoulding obtains blank, and gained blank is conserved, rear dry to blank moisture Less than 0.5% to get the hard heat-insulated plate of furnace lining;
F, by residue isolated step B through flotation, sulfide is detached to obtain;
G, the step F 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 the hard heat-insulated plate coproduction acid of ardealite and red mud furnace lining above-mentioned, 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 smokeless Coal, carbon or gangue.
In the technique of the hard heat-insulated plate coproduction acid of ardealite and red mud furnace lining above-mentioned, in step A, the raw material In, ardealite and red mud are according to 1:The ratio of 0.9-2 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 the hard heat-insulated plate coproduction acid of ardealite and red mud furnace lining above-mentioned, in step A, the kiln is industry Rotary kiln, Industry Tunnel Kiln or industrial shaft kiln.
It is in temperature in step A in the technique of the hard heat-insulated plate coproduction acid of ardealite and red mud furnace lining above-mentioned Roasting time 1-2h at 1000-1350 DEG C.
In the technique of the hard heat-insulated plate coproduction acid of ardealite and red mud furnace lining above-mentioned, in step B, clinker elder generation water It is dissolved out after mill;It is 4-6 that liquid when dissolution, which consolidates volume ratio,:1.
In the technique of the hard heat-insulated plate coproduction acid of ardealite and red mud furnace lining above-mentioned, in step C, calcination is in temperature Calcination time 3-5h at 800-1200 DEG C.
In the technique of the hard heat-insulated plate coproduction acid of ardealite and red mud furnace lining above-mentioned, in step D, by weight, The mixed material includes 10-15 parts of alumina powder, and 40-50 parts of vermiculite power, 10-15 parts of floating bead, 10-15 parts of clay powder, silicon are micro- 3-5 parts of powder, 8-13 parts of expanded perlite, 10-15 parts of aluminate cement, 45-50 parts of calcium lignosulfonate, waterproofing agent of organosilicon 5- 8 parts and 10-20 parts of water.
In the technique of the hard heat-insulated plate coproduction acid of ardealite and red mud furnace lining above-mentioned, in step E, the pressure of the compacting Power is 20-25MPa;The time of the pressurize is 20-30s, and the density when mixed material reaches dense state is 1.3- 1.8g/cm3
In the technique of the hard heat-insulated plate coproduction acid of ardealite and red mud furnace lining above-mentioned, in step E, the maintenance when Between be 200-240h, the temperature of the drying is 270-320 DEG C.
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↓+[sulphur]
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).[sulphur] in reaction equation refers 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 the hard heat-insulated plate of furnace lining, due to entire Mainly using ardealite and red mud as raw material in technique, adds other a small amount of substances and therefore greatly reduce relieving haperacidity and furnace lining The cost input of hard heat-insulated plate.The utilization rate for also greatly increasing ardealite and waste red mud residues, to alleviate ardealite and red mud There is 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 the hard heat-insulated plate of furnace lining, and the hard heat-insulated plate of furnace lining is high with structural strength, reheating linear change rate on reheating is low, thermal coefficient Under low, the moisture-proof, condition of high temperature the advantages of stable physical property, and the hard heat-insulated plate of furnace lining 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 the hard heat-insulated plate of furnace lining
Inventor carries out performance detection to the hard heat-insulated plate of furnace lining in following five groups of embodiments respectively, and testing result is shown in Table 1;
It is obtained by the hard heat-insulated plate testing result table analysis of 1 furnace lining of the present invention of table, the hard heat-insulated plate of furnace lining of the invention has Structural strength is high, reheating linear change rate on reheating is low, thermal coefficient is low, under the moisture-proof, condition of high temperature the advantages of stable physical property.
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 the hard heat-insulated plate coproduction acid of red mud furnace lining, 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 0.9 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, alumina powder is crushed to obtain after calcination time 5h at 800 DEG C of temperature;
F, by alumina powder made from step E and vermiculite power, floating bead, clay powder, silicon powder, expanded perlite, aluminate cement, Calcium lignosulfonate, waterproofing agent of organosilicon and water are uniformly mixed to obtain mixed material;Wherein by weight, 10 parts of alumina powder, 40 parts of vermiculite power, 10 parts of floating bead, 10 parts of clay powder, 3 parts of silicon powder, 8 parts of expanded perlite, 10 parts of aluminate cement, lignin 10 parts of 45 parts of sulfoacid calcium, 5 parts of waterproofing agent of organosilicon and water.
G, after shaper being added in mixed material made from step F, shaper is placed in forcing press, through being vented, It is suppressed in the case where pressure is 20-25MPa, pressurize 20-30s makes mixed material reach dense state, density when dense state For 1.3-1.8g/cm3, demoulding obtains blank, and gained blank carries out maintenance 200h, after be 270 DEG C in temperature at dry to blank water Content is divided to be less than 0.5% to get the hard heat-insulated plate of furnace lining.
Embodiment 2:A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining, 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 weight ratio mixes, caustic soda Adding proportion 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 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, alumina powder is crushed to obtain after calcination time 4h at 1000 DEG C of temperature;
F, by alumina powder made from step E and vermiculite power, floating bead, clay powder, silicon powder, expanded perlite, aluminate cement, Calcium lignosulfonate, waterproofing agent of organosilicon and water are uniformly mixed to obtain mixed material;Wherein by weight, 15 parts of alumina powder, 40 parts of vermiculite power, 15 parts of floating bead, 10 parts of clay powder, 5 parts of silicon powder, 8 parts of expanded perlite, 15 parts of aluminate cement, lignin 10 parts of 45 parts of sulfoacid calcium, 8 parts of waterproofing agent of organosilicon and water.
G, after shaper being added in mixed material made from step F, shaper is placed in forcing press, through being vented, It is suppressed in the case where pressure is 20-25MPa, pressurize 20-30s makes mixed material reach dense state, density when dense state For 1.3-1.8g/cm3, demoulding obtains blank, and gained blank carries out maintenance 220h, after be 300 DEG C in temperature at dry to blank water Content is divided to be less than 0.5% to get the hard heat-insulated plate of furnace lining.
Embodiment 3:A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining, 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 1.3 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, alumina powder is crushed to obtain after calcination time 3h at 1100 DEG C of temperature;
F, by alumina powder made from step E and vermiculite power, floating bead, clay powder, silicon powder, expanded perlite, aluminate cement, Calcium lignosulfonate, waterproofing agent of organosilicon and water are uniformly mixed to obtain mixed material;Wherein by weight, 15 parts of alumina powder, 45 parts of vermiculite power, 15 parts of floating bead, 13 parts of clay powder, 5 parts of silicon powder, 10 parts of expanded perlite, 15 parts of aluminate cement, lignin 15 parts of 48 parts of sulfoacid calcium, 8 parts of waterproofing agent of organosilicon and water.
G, after shaper being added in mixed material made from step F, shaper is placed in forcing press, through being vented, It is suppressed in the case where pressure is 20-25MPa, pressurize 20-30s makes mixed material reach dense state, density when dense state For 1.3-1.8g/cm3, demoulding obtains blank, and gained blank carries out maintenance 230h, after be 310 DEG C in temperature at dry to blank water Content is divided to be less than 0.5% to get the hard heat-insulated plate of furnace lining.
Embodiment 4:A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining, 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 1.6 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 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, alumina powder is crushed to obtain after calcination time 3h at 1200 DEG C of temperature;
F, by alumina powder made from step E and vermiculite power, floating bead, clay powder, silicon powder, expanded perlite, aluminate cement, Calcium lignosulfonate, waterproofing agent of organosilicon and water are uniformly mixed to obtain mixed material;Wherein by weight, 13 parts of alumina powder, 48 parts of vermiculite power, 12 parts of floating bead, 13 parts of clay powder, 5 parts of silicon powder, 10 parts of expanded perlite, 13 parts of aluminate cement, lignin 18 parts of 48 parts of sulfoacid calcium, 7 parts of waterproofing agent of organosilicon and water.
G, after shaper being added in mixed material made from step F, shaper is placed in forcing press, through being vented, It is suppressed in the case where pressure is 20-25MPa, pressurize 20-30s makes mixed material reach dense state, density when dense state For 1.3-1.8g/cm3, demoulding obtains blank, and gained blank carries out maintenance 230h, after be 320 DEG C in temperature at dry to blank water Content is divided to be less than 0.5% to get the hard heat-insulated plate of furnace lining.
Embodiment 5:A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining, 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 weight ratios mixes, and burns Alkali adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, anthracitic mixed proportion are 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, alumina powder is crushed to obtain after calcination time 5h at 1200 DEG C of temperature;
F, by alumina powder made from step E and vermiculite power, floating bead, clay powder, silicon powder, expanded perlite, aluminate cement, Calcium lignosulfonate, waterproofing agent of organosilicon and water are uniformly mixed to obtain mixed material;Wherein by weight, 15 parts of alumina powder, 50 parts of vermiculite power, 15 parts of floating bead, 15 parts of clay powder, 5 parts of silicon powder, 13 parts of expanded perlite, 15 parts of aluminate cement, lignin 20 parts of 50 parts of sulfoacid calcium, 8 parts of waterproofing agent of organosilicon and water.
G, after shaper being added in mixed material made from step F, shaper is placed in forcing press, through being vented, It is suppressed in the case where pressure is 20-25MPa, pressurize 20-30s makes mixed material reach dense state, density when dense state For 1.3-1.8g/cm3, demoulding obtains blank, and gained blank carries out maintenance 240h, after be 320 DEG C in temperature at dry to blank water Content is divided to be less than 0.5% to get the hard heat-insulated plate of furnace lining.

Claims (10)

1. the technique of a kind of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining, which is characterized in that include 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, 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, by alumina powder made from step C and vermiculite power, floating bead, clay powder, silicon powder, expanded perlite, aluminate cement, Calcium lignosulfonate, waterproofing agent of organosilicon and water are uniformly mixed to obtain mixed material;
E, by made from step D mixed material be added shaper after, shaper is placed in forcing press, through exhaust, compacting, Pressurize makes mixed material reach dense state, and demoulding obtains blank, and gained blank is conserved, rear dry to blank moisture Less than 0.5% to get the hard heat-insulated plate of furnace lining;
F, by residue isolated step B through flotation, sulfide is detached to obtain;
G, the step F 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 the hard heat-insulated plate coproduction acid of red mud furnace lining, it is characterised in that: In step A, the red mud is the red mud that alumina producing Bayer process generates;The additive is sodium carbonate, sodium sulphate or burning Alkali;The modifying agent is anthracite, carbon or gangue.
3. the technique of ardealite according to claim 1 and the hard heat-insulated plate coproduction acid of red mud furnace lining, it is characterised in that: In step A, in the raw material, ardealite and red mud are according to 1:The ratio of 0.9-2 weight ratios mixes, and additive adding proportion is pressed 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 total weight 10-25%。
4. the technique of ardealite according to claim 1 and the hard heat-insulated plate coproduction acid of red mud furnace lining, it is characterised in that: 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 the hard heat-insulated plate coproduction acid of red mud furnace lining, it is characterised in that: 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 the hard heat-insulated plate coproduction acid of red mud furnace lining, it is characterised in that: 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 the hard heat-insulated plate coproduction acid of red mud furnace lining, it is characterised in that: 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 the hard heat-insulated plate coproduction acid of red mud furnace lining, it is characterised in that: In step D, by weight, the mixed material include 10-15 parts of alumina powder, 40-50 parts of vermiculite power, 10-15 parts of floating bead, 10-15 parts of clay powder, 3-5 parts of silicon powder, 8-13 parts of expanded perlite, 10-15 parts of aluminate cement, calcium lignosulfonate 45- 10-20 parts of 50 parts, 5-8 parts of waterproofing agent of organosilicon and water.
9. the technique of ardealite according to claim 1 and the hard heat-insulated plate coproduction acid of red mud furnace lining, it is characterised in that: In step E, the pressure of the compacting is 20-25MPa;The time of the pressurize is 20-30s, and the mixed material reaches closely knit Density when state is 1.3-1.8g/cm3
10. the technique of ardealite according to claim 1 and the hard heat-insulated plate coproduction acid of red mud furnace lining, feature exist In:In step E, the time of the maintenance is 200-240h, and the temperature of the drying is 270-320 DEG C.
CN201810713076.7A 2018-07-03 2018-07-03 A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining Pending CN108751966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810713076.7A CN108751966A (en) 2018-07-03 2018-07-03 A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810713076.7A CN108751966A (en) 2018-07-03 2018-07-03 A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining

Publications (1)

Publication Number Publication Date
CN108751966A true CN108751966A (en) 2018-11-06

Family

ID=63975535

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810713076.7A Pending CN108751966A (en) 2018-07-03 2018-07-03 A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining

Country Status (1)

Country Link
CN (1) CN108751966A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114149231A (en) * 2021-12-17 2022-03-08 郑州金瑜隆隔热材料有限公司 Low-heat-conduction heat preservation method, low-heat-conduction material and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013176447A1 (en) * 2012-05-23 2013-11-28 스키너스 주식회사 Hybrid foundation structure, and method for building same
CN104311040A (en) * 2014-04-03 2015-01-28 郑州金瑜隆隔热材料有限公司 Powder for preparing magnesium-silicon hard insulation board, magnesium-silicon hard insulation board 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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013176447A1 (en) * 2012-05-23 2013-11-28 스키너스 주식회사 Hybrid foundation structure, and method for building same
CN104311040A (en) * 2014-04-03 2015-01-28 郑州金瑜隆隔热材料有限公司 Powder for preparing magnesium-silicon hard insulation board, magnesium-silicon hard insulation board 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 (3)

* Cited by examiner, † Cited by third party
Title
厉衡隆 等主编: "《铝冶炼生产技术手册》", 31 July 2011, 冶金工业出版社 *
朱绍忠 等编译: "《应用化学手册》", 28 February 1989, 上海科学技术出版社出版 *
王福元 等主编: "《粉煤灰利用手册》", 31 July 1997, 中国电力出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114149231A (en) * 2021-12-17 2022-03-08 郑州金瑜隆隔热材料有限公司 Low-heat-conduction heat preservation method, low-heat-conduction material and preparation method thereof

Similar Documents

Publication Publication Date Title
CN103922622B (en) A kind of technique utilizing aluminium ash to produce aluminosulfate cement
Balomnenos et al. The ENEXAL bauxite residue treatment process: industrial scale pilot plant results
CN103397128A (en) Method used for extracting iron from red mud by drastic reduction and method used for preparing gel material from secondary tailings
CN103074456A (en) Method for recycling iron from waste red mud in alumina production
CN103351117A (en) Autoclaved blue brick or grey tile and manufacturing method thereof
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
CN103304141B (en) A kind of glass-ceramic utilizing slag and red mud compound to prepare and preparation method thereof
CN101003422B (en) New method for producing sulfuric acid and cement by using phosphogypsum
CN104446363A (en) Method of preparing ceramsite from manganese carbonate residues
CN108793815A (en) A kind of technique of ardealite and red mud relieving haperacidity coproduction concrete accelerator
CN101450843B (en) Iron and aluminum complex ore comprehensive utilization method
CN104961473B (en) A kind of method for producing outlet content of MgO rich forsterite sand less than 70%
CN108751966A (en) A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining
CN107759176A (en) The solid waste comprehensive utilization of slag powders makes building material
CN108623291A (en) A kind of technique preparing refractory castable for ladle coproduction acid
CN108689388A (en) A kind of method of ardealite and red mud relieving haperacidity coproduction ceramic body brightening agent
CN108557779A (en) A kind of method of ardealite and flyash relieving haperacidity coproduction mullite firebrick
CN108484174A (en) A kind of technique using ardealite and red mud relieving haperacidity coproduction porous silicon carbide ceramic
CN108751141A (en) A kind of method of ardealite and red mud relieving haperacidity coproduction modified phosphate binder
CN108623293A (en) The technique that a kind of ardealite and red mud prepare high white pottery ceramic material coproduction acid
CN108706555A (en) A kind of technique of ardealite and low product bauxite ceramic cutting tool material coproduction acid
CN108794024A (en) The technique that a kind of ardealite and low product bauxite prepare saggar repair materials 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
CN108706550A (en) A kind of technique of ardealite and red mud refractory plate 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
RJ01 Rejection of invention patent application after publication

Application publication date: 20181106