CN108623291A - A kind of technique preparing refractory castable for ladle coproduction acid - Google Patents
A kind of technique preparing refractory castable for ladle coproduction acid Download PDFInfo
- Publication number
- CN108623291A CN108623291A CN201810713866.5A CN201810713866A CN108623291A CN 108623291 A CN108623291 A CN 108623291A CN 201810713866 A CN201810713866 A CN 201810713866A CN 108623291 A CN108623291 A CN 108623291A
- Authority
- CN
- China
- Prior art keywords
- ladle
- refractory castable
- gahnite
- acid
- parts
- 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
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000002253 acid Substances 0.000 title claims abstract description 32
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 106
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910001676 gahnite Inorganic materials 0.000 claims abstract description 38
- 229910001884 aluminium oxide Inorganic materials 0.000 claims abstract description 34
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 31
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 25
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 24
- 239000011575 calcium Substances 0.000 claims abstract description 24
- 239000010431 corundum Substances 0.000 claims abstract description 24
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 24
- 229910001691 hercynite Inorganic materials 0.000 claims abstract description 23
- 150000003568 thioethers Chemical class 0.000 claims abstract description 21
- 239000011812 mixed powder Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000005188 flotation Methods 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 238000000227 grinding Methods 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims abstract description 8
- 230000000996 additive Effects 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000002244 precipitate Substances 0.000 claims description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 238000001354 calcination Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 8
- GNTDGMZSJNCJKK-UHFFFAOYSA-N Vanadium(V) oxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 7
- 238000007792 addition Methods 0.000 claims description 7
- 238000006555 catalytic reaction Methods 0.000 claims description 7
- 238000004090 dissolution Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 7
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000001187 sodium carbonate Substances 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 5
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical group C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 4
- 239000003830 anthracite Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- 238000004131 Bayer process Methods 0.000 claims description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 2
- NTGONJLAOZZDJO-UHFFFAOYSA-M disodium;hydroxide Chemical compound [OH-].[Na+].[Na+] NTGONJLAOZZDJO-UHFFFAOYSA-M 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 10
- 239000004411 aluminium Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 229910001388 sodium aluminate Inorganic materials 0.000 description 8
- IYJYQHRNMMNLRH-UHFFFAOYSA-N Sodium aluminate Chemical compound [Na+].O=[Al-]=O IYJYQHRNMMNLRH-UHFFFAOYSA-N 0.000 description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- GVALZJMUIHGIMD-UHFFFAOYSA-H Magnesium phosphate tribasic Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000004137 magnesium phosphate Substances 0.000 description 3
- 229960002261 magnesium phosphate Drugs 0.000 description 3
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 3
- 235000010994 magnesium phosphates Nutrition 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 229910052904 quartz Inorganic materials 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L Calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- SMYKVLBUSSNXMV-UHFFFAOYSA-J aluminum;tetrahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[Al+3] SMYKVLBUSSNXMV-UHFFFAOYSA-J 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- -1 calcirm-fluoride Chemical compound 0.000 description 2
- 239000006071 cream Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000011499 joint compound Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- JHLNERQLKQQLRZ-UHFFFAOYSA-N Calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 206010016256 Fatigue Diseases 0.000 description 1
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N Phosphite Chemical compound [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001399 aluminium compounds Chemical class 0.000 description 1
- YVKMMZAFUFUAAX-UHFFFAOYSA-N aluminum;tetrahydrate Chemical compound O.O.O.O.[Al] YVKMMZAFUFUAAX-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N silicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- 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
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
Abstract
The present invention provides a kind of techniques preparing refractory castable for ladle coproduction acid, 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 carries out being separated by solid-liquid separation isolated solution and prepares aluminium oxide；Aluminium oxide obtained and calcium hexaluminate, magnesia mixed grinding are obtained into mixed powder, refractory castable for ladle is uniformly mixed to obtain by corundum, hercynite and gahnite are added in mixed powder；Isolated residue is obtained into sulfide through flotation；Sulfuric acid is made in sulfide processing.The present invention, which has, prepares refractory castable for ladle and relieving haperacidity is at low cost, waste residue utilization rate is high, the refractory castable for ladle compressive resistance of preparation is high, heating when permanent Linear change rate is small, bulk density is larger, so that the feature that castable high volume stability is strong, thermal shock resistance is high, resistance to slag is good, simple for process.
Description
Technical field
The present invention relates to a kind of techniques preparing refractory castable for ladle coproduction acid, belong to field of metallurgy and chemical engineering.
Background technology
Corundum, hercynite and gahnite are utilized for the existing existing inner lining refractory for ladle
As aggregate to improve the intensity of castable refractory, ensure that castable refractory is fast after coated in aluminium melting furnace using magnesium phosphate cement
Rapid hardening knot is shaped, and magnesia of the castable at the same time in magnesia powder, magnesium phosphate cement also react generation magnalium with alumina powder
Spinelle so improves castable refractory to be combined with corundum, hercynite and gahnite, calcium hexaluminate
Resistance to slag.But in the production of existing refractory castable for ladle, added using a large amount of aluminium oxide and other raw materials mostly
Work 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 refractory castable for ladle.
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.
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.
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 refractory castable for ladle processed, while the technique of coproduction acid, has not been reported.
Goal of the invention
The object of the present invention is to provide a kind of techniques preparing refractory castable for ladle coproduction acid.The present invention has system
Standby refractory castable for ladle and relieving haperacidity are at low cost, and waste residue utilization rate is high, the resistance to pressure of refractory castable for ladle of preparation
Degree is high, heating when permanent Linear change rate is small, bulk density is larger so that castable high volume stability is strong, thermal shock resistance
Feature high, resistance to slag is good, simple for process.
Technical scheme of the present invention
A kind of technique preparing refractory castable for ladle coproduction acid, 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, aluminium oxide is obtained；
D, aluminium oxide made from step C and calcium hexaluminate, magnesia mixed grinding are obtained into mixed powder, it is rigid by being added in mixed powder
Beautiful, hercynite and gahnite are uniformly mixed to obtain refractory castable for ladle；
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 above-mentioned for preparing refractory castable for ladle coproduction acid, in step A, the red mud is Bayer process
Produce the red mud that aluminium oxide generates；The additive is sodium carbonate, sodium sulphate or caustic soda；The modifying agent be anthracite, carbon or
Gangue.
In the technique above-mentioned for preparing refractory castable for ladle coproduction acid, in step A, in the raw material, phosphorus stone
Cream and red mud are according to 1:The ratio of 0.7-2 weight ratios mixes, and additive adding proportion presses contained Na in raw material2O and A12O3+Fe2O3
The 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 above-mentioned for preparing refractory castable for ladle coproduction acid, in step A, the kiln is that industry is turned round
Kiln, Industry Tunnel Kiln or industrial shaft kiln.
It is in temperature 1000-1350 in step A in the technique above-mentioned for preparing refractory castable for ladle coproduction acid
Roasting time 1-2h at DEG C.
It is molten after clinker elder generation water mill in step B in the technique above-mentioned for preparing refractory castable for ladle coproduction acid
Go out；It is 4-6 that liquid when dissolution, which consolidates volume ratio,:1.
In the technique above-mentioned for preparing refractory castable for ladle coproduction acid, in step C, calcination is in temperature 800-
Calcination time 3-5h at 1200 DEG C.
In the technique above-mentioned for preparing refractory castable for ladle coproduction acid, in step D, by weight, the iron
Water packet with castable refractory include 50-60 parts of aluminium oxide, 30-35 parts of corundum, calcium hexaluminate be 20-25 parts, 30-35 parts of magnesia,
20-25 parts of 20-25 parts of hercynite and gahnite.
In the technique above-mentioned for preparing refractory castable for ladle coproduction acid, in step D, the corundum, iron aluminium point are brilliant
Stone and gahnite are aggregate, and calcium hexaluminate, magnesia, aluminium oxide are powder.
In the technique above-mentioned for preparing refractory castable for ladle coproduction acid, in step D, a diameter of 2- of the corundum
3mm, a diameter of 1-1.5mm of gahnite, a diameter of 0.1-0.5mm of gahnite.
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 refractory castable for ladle, 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 refractory castable for ladle.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 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 refractory castable for ladle, refractory castable for ladle compressive resistance is high, heating when permanent Linear change rate it is small,
Bulk density is larger so that castable high volume stability is strong, thermal shock resistance is high, and resistance to slag is good, and foundry ladle fire resisting
Castable 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 refractory castable for ladle
Inventor is respectively to the refractory castable for ladle in following five groups of embodiments, using existing magnesium phosphate cement by iron
Water packet is shaped with castable refractory, and carries out performance detection, and testing result is shown in Table 1；
It is obtained by 1 refractory castable for ladle testing result table analysis of the present invention of table, foundry ladle fire resisting of the invention is poured
Material feeding compressive resistance is high, and permanent Linear change rate is small when heating, larger in 1500 DEG C of compressive resistance height, bulk densities, has good
Volume stability so that castable high volume stability is strong, thermal shock resistance is high, and resistance to slag is good.
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 preparing refractory castable for ladle coproduction acid, 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 0.7 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, aluminium oxide made from step E and calcium hexaluminate, magnesia mixed grinding are obtained into mixed powder, it is rigid by being added in mixed powder
Beautiful, hercynite and gahnite are uniformly mixed to obtain refractory castable for ladle；Wherein by weight, the molten iron
Packet castable refractory include 50 parts of aluminium oxide, 30 parts of corundum, calcium hexaluminate be 20 parts, 30 parts of magnesia, 20 parts of hercynite
With 20 parts of gahnite；The wherein described corundum, hercynite and gahnite are aggregate, calcium hexaluminate, magnesia, oxidation
Aluminium is powder；A diameter of 2-3mm of corundum, a diameter of 1-1.5mm of gahnite, a diameter of 0.1- of gahnite
0.5mm。
Embodiment 2：A kind of technique preparing refractory castable for ladle coproduction acid, 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 addition, carbon is that raw material are total
The 15% of 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, aluminium oxide made from step E and calcium hexaluminate, magnesia mixed grinding are obtained into mixed powder, it is rigid by being added in mixed powder
Beautiful, hercynite and gahnite are uniformly mixed to obtain refractory castable for ladle；Wherein by weight, the molten iron
Packet castable refractory include 60 parts of aluminium oxide, 30 parts of corundum, calcium hexaluminate be 25 parts, 30 parts of magnesia, 25 parts of hercynite
With 20 parts of gahnite；The wherein described corundum, hercynite and gahnite are aggregate, calcium hexaluminate, magnesia, oxidation
Aluminium is powder；A diameter of 2-3mm of corundum, a diameter of 1-1.5mm of gahnite, a diameter of 0.1- of gahnite
0.5mm。
Embodiment 3：A kind of technique preparing refractory castable for ladle coproduction acid, 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, calcination time 3h obtains aluminium oxide at 1100 DEG C of temperature；
F, aluminium oxide made from step E and calcium hexaluminate, magnesia mixed grinding are obtained into mixed powder, it is rigid by being added in mixed powder
Beautiful, hercynite and gahnite are uniformly mixed to obtain refractory castable for ladle；Wherein by weight, the molten iron
Packet castable refractory include 55 parts of aluminium oxide, 32 parts of corundum, calcium hexaluminate be 22 parts, 32 parts of magnesia, 23 parts of hercynite
With 20 parts of gahnite；The wherein described corundum, hercynite and gahnite are aggregate, calcium hexaluminate, magnesia, oxidation
Aluminium is powder；A diameter of 2-3mm of corundum, a diameter of 1-1.5mm of gahnite, a diameter of 0.1- of gahnite
0.5mm。
Embodiment 4：A kind of technique preparing refractory castable for ladle coproduction acid, 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, calcination time 3h obtains aluminium oxide at 1200 DEG C of temperature；
F, aluminium oxide made from step E and calcium hexaluminate, magnesia mixed grinding are obtained into mixed powder, it is rigid by being added in mixed powder
Beautiful, hercynite and gahnite are uniformly mixed to obtain refractory castable for ladle；Wherein by weight, the molten iron
Packet castable refractory include 50 parts of aluminium oxide, 32 parts of corundum, calcium hexaluminate be 22 parts, 30 parts of magnesia, 23 parts of hercynite
With 25 parts of gahnite；The wherein described corundum, hercynite and gahnite are aggregate, calcium hexaluminate, magnesia, oxidation
Aluminium is powder；A diameter of 2-3mm of corundum, a diameter of 1-1.5mm of gahnite, a diameter of 0.1- of gahnite
0.5mm。
Embodiment 5：A kind of technique preparing refractory castable for ladle coproduction acid, 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, calcination time 5h obtains aluminium oxide at 1200 DEG C of temperature；
F, aluminium oxide made from step E and calcium hexaluminate, magnesia mixed grinding are obtained into mixed powder, it is rigid by being added in mixed powder
Beautiful, hercynite and gahnite are uniformly mixed to obtain refractory castable for ladle；Wherein by weight, the molten iron
Packet castable refractory include 50 parts of aluminium oxide, 35 parts of corundum, calcium hexaluminate be 25 parts, 35 parts of magnesia, 25 parts of hercynite
With 25 parts of gahnite；The wherein described corundum, hercynite and gahnite are aggregate, calcium hexaluminate, magnesia, oxidation
Aluminium is powder；A diameter of 2-3mm of corundum, a diameter of 1-1.5mm of gahnite, a diameter of 0.1- of gahnite
0.5mm。
Claims (10)
1. a kind of technique preparing refractory castable for ladle coproduction acid, 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, aluminium oxide is obtained；
D, aluminium oxide made from step C and calcium hexaluminate, magnesia mixed grinding are obtained into mixed powder, it is rigid by being added in mixed powder
Beautiful, hercynite and gahnite are uniformly mixed to obtain refractory castable for ladle；
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 according to claim 1 for preparing refractory castable for ladle coproduction acid, it is characterised in that：Step A
In, the red mud is the red mud that alumina producing Bayer process generates；The additive is sodium carbonate, sodium sulphate or caustic soda；Institute
It is anthracite, carbon or gangue to state modifying agent.
3. the technique according to claim 1 for preparing refractory castable for ladle coproduction acid, it is characterised in that：Step A
In, in the raw material, ardealite and red mud are according to 1:The ratio of 0.7-2 weight ratios mixes, and additive adding proportion presses raw material
In contained Na2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent are the 10- of raw material total weight
25%。
4. the technique according to claim 1 for preparing refractory castable for ladle coproduction acid, it is characterised in that：Step A
In, the kiln is industrial rotary kiln, Industry Tunnel Kiln or industrial shaft kiln.
5. the technique according to claim 1 for preparing refractory castable for ladle coproduction acid, it is characterised in that：Step A
In, it is the roasting time 1-2h at 1000-1350 DEG C of temperature.
6. the technique according to claim 1 for preparing refractory castable for ladle coproduction acid, it is characterised in that：Step B
In, it is dissolved out after clinker elder generation water mill；It is 4-6 that liquid when dissolution, which consolidates volume ratio,:1.
7. the technique according to claim 1 for preparing refractory castable for ladle coproduction acid, it is characterised in that：Step C
In, calcination is the calcination time 3-5h at 800-1200 DEG C of temperature.
8. the technique according to claim 1 for preparing refractory castable for ladle coproduction acid, it is characterised in that：Step D
In, by weight, the refractory castable for ladle is comprising 50-60 parts of aluminium oxide, 30-35 parts of corundum, calcium hexaluminate
20-25 parts of 20-25 parts, 30-35 parts of magnesia, 20-25 parts of hercynite and gahnite.
9. the technique according to claim 1 for preparing refractory castable for ladle coproduction acid, it is characterised in that：Step D
In, the corundum, hercynite and gahnite are aggregate, and calcium hexaluminate, magnesia, aluminium oxide are powder.
10. the technique according to claim 1 for preparing refractory castable for ladle coproduction acid, it is characterised in that：Step D
In, a diameter of 2-3mm of the corundum, a diameter of 1-1.5mm of gahnite, a diameter of 0.1- of gahnite
0.5mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713866.5A CN108623291A (en) | 2018-07-03 | 2018-07-03 | A kind of technique preparing refractory castable for ladle coproduction acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713866.5A CN108623291A (en) | 2018-07-03 | 2018-07-03 | A kind of technique preparing refractory castable for ladle coproduction acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108623291A true CN108623291A (en) | 2018-10-09 |
Family
ID=63689439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810713866.5A Pending CN108623291A (en) | 2018-07-03 | 2018-07-03 | A kind of technique preparing refractory castable for ladle coproduction acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108623291A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111792927A (en) * | 2019-04-09 | 2020-10-20 | 宝山钢铁股份有限公司 | Low-heat-conduction refractory brick for ladle working lining and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396128A (en) * | 2013-07-25 | 2013-11-20 | 浙江锦诚耐火材料有限公司 | Casting method of aluminum melting furnace |
| WO2013176447A1 (en) * | 2012-05-23 | 2013-11-28 | 스키너스 주식회사 | Hybrid foundation structure, and method for building same |
| CN104311069A (en) * | 2014-10-09 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Refractory castable for ladles |
| 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 CN201810713866.5A patent/CN108623291A/en active Pending
Patent Citations (4)
| 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 |
| CN103396128A (en) * | 2013-07-25 | 2013-11-20 | 浙江锦诚耐火材料有限公司 | Casting method of aluminum melting furnace |
| CN104311069A (en) * | 2014-10-09 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Refractory castable for ladles |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111792927A (en) * | 2019-04-09 | 2020-10-20 | 宝山钢铁股份有限公司 | Low-heat-conduction refractory brick for ladle working lining and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101914673B (en) | Sodium-translated roasting method of vanadium minerals | |
| CN108752005A (en) | The technique that a kind of ardealite and red mud prepare composite ceramic material co-producing sulfuric acid | |
| CN108623291A (en) | A kind of technique preparing refractory castable for ladle coproduction acid | |
| CN104961473B (en) | A kind of method for producing outlet content of MgO rich forsterite sand less than 70% | |
| CN108793815A (en) | A kind of technique of ardealite and red mud relieving haperacidity coproduction concrete accelerator | |
| CN109836128A (en) | Utilize the haydite and preparation method thereof of aggregate sandstone tailing production | |
| CN105063362B (en) | Preparation method for active nickel iron residues | |
| CN108751966A (en) | A kind of technique of ardealite and the hard heat-insulated plate coproduction acid of red mud furnace lining | |
| CN108623293A (en) | The technique that a kind of ardealite and red mud prepare high white pottery ceramic material coproduction acid | |
| 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 | |
| CN108658112A (en) | It is a kind of with the technique of ardealite and red mud aluminium coproduction urea-base compound fertilizer | |
| 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 | |
| CN108558374A (en) | A kind of technique of ardealite and coal ash for manufacturing High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic coproduction acid | |
| CN108706550A (en) | A kind of technique of ardealite and red mud refractory plate coproduction acid | |
| CN108706555A (en) | A kind of technique of ardealite and low product bauxite ceramic cutting tool material coproduction acid | |
| CN108751141A (en) | A kind of method of ardealite and red mud relieving haperacidity coproduction modified phosphate binder | |
| CN108751144A (en) | A kind of technique of ardealite and low product bauxite overfiring-proof coating coproduction acid | |
| CN108623295A (en) | A kind of technique preparing insulating brick coproduction acid | |
| CN108751954A (en) | A kind of technique of ardealite and flyash relieving haperacidity coproduction pressure-and heat-resistance ceramic material | |
| CN108793954A (en) | A kind of technique preparing domestic ceramics mud coproduction acid | |
| CN108946681A (en) | A kind of technique preparing wear-resisting silicon nitride ceramic material coproduction acid | |
| CN108795008A (en) | A kind of technique of ardealite and flyash relieving haperacidity coproduction heat-proof combustion-resistant ABS/PC alloys | |
| 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: 20181009 |
|
| RJ01 | Rejection of invention patent application after publication |