CN101723459B - Method for manufacturing ceramic pigment chrome green from waste materials of chromium salt factory - Google Patents
Method for manufacturing ceramic pigment chrome green from waste materials of chromium salt factory Download PDFInfo
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- CN101723459B CN101723459B CN2008102306001A CN200810230600A CN101723459B CN 101723459 B CN101723459 B CN 101723459B CN 2008102306001 A CN2008102306001 A CN 2008102306001A CN 200810230600 A CN200810230600 A CN 200810230600A CN 101723459 B CN101723459 B CN 101723459B
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- chromium salt
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- chrome green
- salt factory
- waste materials
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- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 150000001844 chromium Chemical class 0.000 title claims abstract description 35
- 239000002699 waste material Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000919 ceramic Substances 0.000 title abstract description 8
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 239000000049 pigment Substances 0.000 title abstract description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 68
- 238000006243 chemical reaction Methods 0.000 claims abstract description 44
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000000047 product Substances 0.000 claims abstract description 21
- 239000002253 acid Substances 0.000 claims abstract description 18
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 17
- 239000012065 filter cake Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 7
- 235000017550 sodium carbonate Nutrition 0.000 claims description 32
- 238000001914 filtration Methods 0.000 claims description 14
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 230000001143 conditioned effect Effects 0.000 claims description 3
- PXLIDIMHPNPGMH-PJWPDVOUSA-N disodium;dioxido(dioxo)chromium-51 Chemical compound [Na+].[Na+].[O-][51Cr]([O-])(=O)=O PXLIDIMHPNPGMH-PJWPDVOUSA-N 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- JXAZAUKOWVKTLO-UHFFFAOYSA-L sodium pyrosulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OS([O-])(=O)=O JXAZAUKOWVKTLO-UHFFFAOYSA-L 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- MILMJAFFMWCPLL-UHFFFAOYSA-J sodium;chromium(3+);disulfate Chemical compound [Na+].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O MILMJAFFMWCPLL-UHFFFAOYSA-J 0.000 claims description 3
- 235000010265 sodium sulphite Nutrition 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 4
- 229910021529 ammonia Inorganic materials 0.000 abstract 2
- 239000010802 sludge Substances 0.000 abstract 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 239000008103 glucose Substances 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 5
- 238000003837 high-temperature calcination Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- PPNKDDZCLDMRHS-UHFFFAOYSA-N dinitrooxybismuthanyl nitrate Chemical compound [Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PPNKDDZCLDMRHS-UHFFFAOYSA-N 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- UYJXRRSPUVSSMN-UHFFFAOYSA-P ammonium sulfide Chemical compound [NH4+].[NH4+].[S-2] UYJXRRSPUVSSMN-UHFFFAOYSA-P 0.000 description 1
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 150000001661 cadmium Chemical class 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- CMOAHYOGLLEOGO-UHFFFAOYSA-N oxozirconium;dihydrochloride Chemical compound Cl.Cl.[Zr]=O CMOAHYOGLLEOGO-UHFFFAOYSA-N 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- -1 salt compounds Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 description 1
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- Inorganic Compounds Of Heavy Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for manufacturing a ceramic pigment chrome green from waste materials of a chromium salt factory, which comprises the following steps: taking rejected materials, namely acid sludge and waste acid water, of the chromium salt factory as raw materials, adding sodium carbonate and water into a reactor with a stirrer, adding the waste material, namely the acid sludge, of the chromium salt factory into the reactor after the sodium carbonate is completely dissolved to perform reaction, adding the waste acid water of the chromium salt factory after the reaction is completed, adjusting the pH value of the reaction solution, adding an industrial glucose or a sodium sulphite to perform reaction, standing and depositing the reaction result to obtain a clear liquid after reaction, adding an ammonia into the clear liquid, controlling the pH value to between 8 and 10, stopping adding the ammonia, and performing filter pressing and washing on the obtained solution to obtain a filter cake; and sequentially baking and cooling the filter cake, crushing the filter cake into powder, and thus obtaining the product, namely the chrome green. The method for manufacturing the ceramic pigment chrome green of the invention has the advantages of simple operation and low cost; the obtained product has a relatively strong tinting strength and can meet industrial requirements; and the method solves the problem of pollution of waste materials of the chromium salt factory, really realizes changing waste materials into things of value and has obvious economic and social benefits.
Description
One, technical field:
The present invention relates to a kind of working method of beramic color, particularly relate to a kind of method of utilizing waste materials of chromium salt factory to produce the beramic color chrome green.
Two, background technology:
In the media such as beramic color is generally water insoluble, oily, solvent and resin; Can be scattered in the various media, it has opacifying power, tinting strength, and is relatively stable to light; Being to be used for the painted material of decorating ceramic products, generally is by purified nonmetal oxide (as: SiO
2, CaO) with some MOX (as: Fe
2O
3) material that forms through high-temperature calcination.Beramic color is generally powdery, during use it is added in the good corresponding parent glaze of configured in advance and grinds, adjusts, and processes glaze slip, again glaze slip is sprayed to porcelain base surface, after high-temperature calcination, makes ceramic become stable color.Kind according to nonmetal oxide that uses and MOX is different, and beramic color has different types of series, for example: Yellow series, red series, brown series, green-series, purple series, grey color system, black series or the like.
At present, the traditional technology of the general employing of the preparation of beramic color, it is even according to certain ratio ball mill mixing to be about to each coloring oxide and silicate oxide (as: aluminum oxide, quartz, zirconium white etc.), arrives certain fineness through high-temperature calcination and ball milling then.The main drawback that traditional technology exists: (1) each oxide compound at high temperature reacts not exclusively, is difficult for letting painted metal ion mixing in the stable ceramic mineral of high temperature color development; (2) used muriate, fluorochemical, nitrate salt, borate and the carbonate etc. of alkali metal containing and earth alkali metal in the production, and these salt compounds at high temperature decompose the gas that the back produced and can have a strong impact on environment.Shortcoming such as adopt that traditional technology produces that beramic color exists that cost is higher, contaminate environment, tinting strength are more weak.
Patent documentation report about beramic color and preparation method thereof also has many at present; For example: 1, application number is 200610031874.9; Name is called a kind of preparation method of pyroceramic pigment; The material that in this preparation method, adopts has cadmium salt soln, zirconium oxychloride, sodium sulphite or ammonium sulfide solution, silicate solutions, nitric acid etc., and calcining temperature is 800～1200 ℃.2, application number is 200510048271.5, and name is called high temperature scarlet ceramic pigment and working method, in working method, has adopted materials such as yttrium oxide, aluminum oxide, chromic oxide, and synthesis temperature is 1350 ℃.3, application number is 200710061841.3, and name is called the production technique of high-temp resistant bismuth vanadate yellow ceramic pigment, in this production technique, has adopted Bismuth trinitrate (Bi (NO
3)
3), ammonium vanadate (NH
4VO
3), material such as water glass and silicon-dioxide, maturing temperature is 500～900 ℃.
At present; In the domestic patent documentation about seldom to the concrete report of beramic color chrome green working method; The inventor has developed a kind of method of utilizing waste materials of chromium salt factory to produce the beramic color chrome green through great deal of experimental, and this method not only can be produced the beramic color chrome green product that satisfies industrial requirements; And the pollution problem that has solved the chromium salt factory refuse, help environment protection.
Three, content of the present invention:
The technical problem that the present invention will solve provides a kind of method of utilizing waste materials of chromium salt factory to produce the beramic color chrome green.
Address the above problem, the technical scheme that the present invention adopts is:
The present invention provides a kind of method of utilizing waste materials of chromium salt factory to produce the beramic color chrome green, and the detailed step of this method is following:
A; The stage of reaction: soda ash and water are put in the reactor of belt stirrer; The addition of water is 3 times of soda ash addition; Begin after the adding to stir and heat up; After soda ash fully dissolves; Add waste materials of chromium salt factory acid mud; The part by weight of soda ash and sour the two addition of mud is 1:2～2.6; When temperature reaches 80～100 ℃; Stop to heat up and continue to stir, reacted 1～3 hour, reaction finishes the back and adds the chromium salt factory waste acid water; The pH value to 2 of conditioned reaction solution～4; React after 1～2 hour, add industrial sugar or sodium sulfite, its addition is 10～20% of a reaction solution total amount; Obtain clear liquid behind the quiescent setting; In clear liquid, add concentration and be 15～20% ammoniacal liquor, the pH value of control solution is to stop stage of reaction agitator continuous stirring at 8～10 o'clock;
B, press filtration stage: step a gained reaction soln is carried out press filtration, washing, obtain filter cake after the washing;
C, roasting stage: step b gained filter cake is imported kiln carry out roasting; Maturing temperature is 750～950 ℃, and roasting time is 4～6 hours, after the end it is cooled to below 50 ℃; Then its lapping powder being broken into fineness is 320 purpose powder, is the product chrome green.
For the above-mentioned method of utilizing waste materials of chromium salt factory to produce the beramic color chrome green, soda ash described in the step a is industrial one-level soda ash, its purity>98%, the stirring velocity of said whisking appliance is 38～45 rev/mins.
For the above-mentioned method of utilizing waste materials of chromium salt factory to produce the beramic color chrome green, the content of chromium sodium sulphate is 40～50% in the acid of waste materials of chromium salt factory described in the step a mud, and the content of Sodium chromate-51Cr and sodium sulfate is 10～15%, and all the other are water; Contain 25～35% sulfuric acid and 35～45% sodium pyrosulfate in the chromium salt factory waste acid water, surplus is water and impurity.
For the above-mentioned method of utilizing waste materials of chromium salt factory to produce the beramic color chrome green, flame filter press or horizontal centrifuge are adopted in press filtration described in the step b.
For the above-mentioned method of utilizing waste materials of chromium salt factory to produce the beramic color chrome green, kiln described in the step c is rotary kiln or tunnel.
Cr in the gained beramic color chrome green product of the present invention
2O
3Content greater than 95%.
Positive beneficial effect of the present invention:
1, to adopt the waste material acid mud and the waste acid water of chromium salt factory be raw material in the present invention, makes it obtain again utilizing, and solved the severe contamination problem of chromium salt factory refuse, helps environment protection.From environmental angle, the present invention has remarkable social benefit.
2, adopt the inventive method to produce the beramic color chrome green, simple to operate, products obtained therefrom can satisfy industrial requirements, and yield is higher, Cr in the products obtained therefrom chrome green
2O
3Content greater than 95%.
3. maturing temperature is lower in the working method of beramic color chrome green of the present invention, and production cost is lower, therefore, adopts the inventive method to produce beramic color chrome green remarkable in economical benefits.
4. adopt the beramic color chrome green tinting strength of working method preparation of the present invention stronger.
5, the present invention adopts waste materials of chromium salt factory to produce the beramic color chrome green; Not only solve the severe contamination problem of chromium salt factory waste, helped environment protection, and produced the beramic color chrome green product that can satisfy industrial requirements; Therefore, the present invention has remarkable economic efficiency and social benefit.
Four, embodiment:
Following examples have been merely and have further specified the present invention, do not limit content of the present invention.
Embodiment one: a kind of method of utilizing waste materials of chromium salt factory to produce the beramic color chrome green
Raw materials used soda ash is industrial one-level soda ash, its purity>98%; The content of chromium sodium sulphate is 40～50% in the waste materials of chromium salt factory acid mud, and the content of Sodium chromate-51Cr and sodium sulfate is 10～15%, and all the other are water; Contain 25～35% sulfuric acid and 35～45% sodium pyrosulfate in the chromium salt factory waste acid water, surplus is water and impurity.This method may further comprise the steps:
A; The stage of reaction: 1 ton of soda ash and 3 tons of water are put in the reactor of belt stirrer; The addition of water is 3 times of soda ash addition; Begin after the adding to stir and heat up; The mixing speed of agitator is 38～45 rev/mins; After soda ash fully dissolves; Add 2 tons in waste materials of chromium salt factory acid mud; The part by weight of soda ash and sour the two addition of mud is 1:2; When temperature reaches 90 ℃, stop to heat up; Continue to stir, reacted 2 hours; Reaction finishes the back and adds the chromium salt factory waste acid water; Reacted 1～2 hour the pH value to 2 of conditioned reaction solution～4, adds sodium sulfite then; Its addition is 15% of a reaction solution total amount; Obtain clear liquid behind the quiescent setting, in clear liquid, add concentration and be 15% ammoniacal liquor, the pH value of control solution is to stop in 9 o'clock;
B, press filtration stage: adopt flame filter press to carry out press filtration, washing step a gained reaction soln, obtain filter cake after the washing;
C, roasting stage: step b gained filter cake is imported rotary kiln carry out roasting; Maturing temperature is 800 ℃, and roasting time is 5 hours, after the end it is cooled to below 50 ℃; Then its lapping powder being broken into fineness is 320 purpose powder; Be the product chrome green, it is weighed obtains 0.27 ton of product, Cr in the chrome green product
2O
3Content greater than 95%.
Embodiment two: basic identical with embodiment one, something in common is no longer narrated, and difference is:
Add 2.5 tons in 1 ton of soda ash and sour mud among the step a; The part by weight of soda ash and sour the two addition of mud is 1:2.5; Reaction temperature is 100 ℃; Reacted 1 hour; The addition of sodium sulfite is 20% of a reaction solution total amount; Obtain clear liquid behind the quiescent setting, in clear liquid, add concentration and be 18% ammoniacal liquor, the pH value of control solution is to stop in 8 o'clock;
Adopt horizontal centrifuge that reaction soln is carried out press filtration among the step b;
Adopt rotary kiln to carry out roasting among the step c, maturing temperature is 750 ℃, and roasting time is 6 hours.
Obtain 0.32 ton of product chrome green at last.
Embodiment three: basic identical with embodiment one, something in common is no longer narrated, and difference is:
Add 4.4 tons in 2 tons of soda ash and sour mud among the step a; The part by weight of soda ash and sour the two addition of mud is 1:2.2; Reaction temperature is 80 ℃; Reacted 3 hours; The addition of sodium sulfite is 10% of a reaction solution total amount, obtains clear liquid behind the quiescent setting, and adding concentration is 20% ammoniacal liquor in clear liquid; The pH value of control solution is 10, reacts to stop in 1.5 hours;
Adopt horizontal centrifuge that reaction soln is carried out press filtration among the step b;
Adopt rotary kiln to carry out roasting among the step c, maturing temperature is 850 ℃, and roasting time is 4 hours.
Obtain 0.58 ton of product chrome green at last.
Embodiment four: basic identical with embodiment one, something in common is no longer narrated, and difference is:
Add 5.2 tons in 2 tons of soda ash and sour mud among the step a; The part by weight of soda ash and sour the two addition of mud is 1:2.6; Reaction temperature is 85 ℃; Reacted 3 hours; The addition of industry sugar is 13% of a reaction solution total amount, obtains clear liquid behind the quiescent setting, and adding concentration is 20% ammoniacal liquor in clear liquid; The pH value of control solution is 9, reacts to stop in 1 hour;
Adopt flame filter press that reaction soln is carried out press filtration among the step b;
Adopt rotary kiln to carry out roasting among the step c, maturing temperature is 950 ℃, and roasting time is 4 hours.
Obtain 0.65 ton of product chrome green at last.
Embodiment five: basic identical with embodiment one, something in common is no longer narrated, and difference is:
Add 2.5 tons in 1 ton of soda ash and sour mud among the step a; The part by weight of soda ash and sour the two addition of mud is 1:2.5; Reaction temperature is 95 ℃; Reacted 2 hours; The addition of sodium sulfite is 18% of a reaction solution total amount, obtains clear liquid behind the quiescent setting, and adding concentration is 15% ammoniacal liquor in clear liquid; The pH value of control solution is 8, reacts to stop in 2 hours;
Adopt horizontal centrifuge that reaction soln is carried out press filtration among the step b;
Adopt rotary kiln to carry out roasting among the step c, maturing temperature is 850 ℃, and roasting time is 4 hours.
Obtain 0.30 ton of product at last.
Embodiment six: basic identical with embodiment one, something in common is no longer narrated, and difference is:
Add 2.3 tons in 1 ton of soda ash and sour mud among the step a; The part by weight of soda ash and sour the two addition of mud is 1:2.3; Reaction temperature is 95 ℃; Reacted 1.5 hours; The addition of industry sugar is 18% of a reaction solution total amount; Obtain clear liquid behind the quiescent setting, in clear liquid, add concentration and be 20% ammoniacal liquor, the pH value of control solution is to stop in 9 o'clock;
Adopt horizontal centrifuge that reaction soln is carried out press filtration among the step b;
Adopt tunnel to carry out roasting among the step c, maturing temperature is 850 ℃, and roasting time is 5 hours.
Obtain 0.28 ton of product chrome green at last.
Embodiment seven: basic identical with embodiment one, something in common is no longer narrated, and difference is:
Add 2.05 tons in 1 ton of soda ash and sour mud among the step a; The part by weight of soda ash and sour the two addition of mud is 1:2.05; Reaction temperature is 90 ℃; Anti-2 hours; The addition of sodium sulfite is 16% of a reaction solution total amount; Obtain clear liquid behind the quiescent setting, in clear liquid, add concentration and be 15% ammoniacal liquor, the pH value of control solution is to stop in 10 o'clock;
Adopt flame filter press that reaction soln is carried out press filtration among the step b;
Adopt tunnel to carry out roasting among the step c, maturing temperature is 800 ℃, and roasting time is 5 hours.
Obtain 0.26 ton of product chrome green at last.
Embodiment eight: basic identical with embodiment one, something in common is no longer narrated, and difference is:
Add 2.55 tons in 1 ton of soda ash and sour mud among the step a; The part by weight of soda ash and sour the two addition of mud is 1:2.55; Reaction temperature is 85 ℃; Reacted 2.5 hours; The addition of industry sugar is 14% of a reaction solution total amount; Obtain clear liquid behind the quiescent setting, in clear liquid, add concentration and be 20% ammoniacal liquor, the pH value of control solution is to stop in 8 o'clock;
Adopt horizontal centrifuge that reaction soln is carried out press filtration among the step b;
Adopt rotary kiln to carry out roasting among the step c, maturing temperature is 800 ℃, and roasting time is 5 hours.
Obtain 0.33 ton of product chrome green at last.
Claims (2)
1. method of utilizing waste materials of chromium salt factory to produce the beramic color chrome green is characterized in that this method may further comprise the steps:
A, step of reaction: soda ash and water are put in the reactor drum of belt stirrer, and the add-on of water is 3 times of soda ash add-on, begins after the adding to stir to heat up; After soda ash fully dissolves, add waste materials of chromium salt factory acid mud, the part by weight of soda ash and sour the two add-on of mud is 1: 2～2.6; When temperature reaches 80～100 ℃, to react 1～3 hour, reaction finishes the back and adds the chromium salt factory waste acid water; Reacted 1～2 hour pH value to 2～4 of conditioned reaction solution, adds industrial sugar or S-WAT then and continue reaction; Its add-on is 10～20% of a reaction soln total amount; Obtain clear liquid behind the quiescent setting, in clear liquid, add concentration and be 15～20% ammoniacal liquor, the pH value of control solution is 8～10 to stop;
Said soda ash is industrial one-level soda ash, its purity＞98%; The stirring velocity of said whisking appliance is 38～45 rev/mins; The content of chromium sodium sulphate is 40～50% in the said waste materials of chromium salt factory acid mud, and the content of Sodium chromate-51Cr and sodium sulfate is 10～15%, and all the other are water; Contain 25～36% sulfuric acid and 35～45% sodium pyrosulfate in the said chromium salt factory waste acid water, surplus is water and impurity;
B, press filtration stage: step a gained reaction soln is carried out press filtration, washing, obtain filter cake after the washing;
C, roasting stage: step b gained filter cake is imported kiln carry out roasting, maturing temperature is 750～950 ℃, and roasting time is 4～6 hours; After the end it is cooled to below 50 ℃; Then its lapping powder being broken into fineness is 320 purpose powder, is the product chrome green, Cr in the gained chrome green product
2O
3Content greater than 95%.
2. the method for utilizing waste materials of chromium salt factory to produce the beramic color chrome green according to claim 1, it is characterized in that: kiln described in the step c is rotary kiln or tunnel.
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| CN103159505B (en) * | 2013-03-29 | 2014-12-31 | 佛山市南海万兴材料科技有限公司 | Process for preparing zirconium-cadmium-selenium series colorant from recycled cadmium-containing wastewater |
| CN106046858A (en) * | 2016-06-01 | 2016-10-26 | 佛山市高明区海帝陶瓷原料有限公司 | Method for preparing black ceramic pigment with chromium-based waste materials and black ceramic pigment |
| CN106315675B (en) * | 2016-08-23 | 2017-09-15 | 张晓东 | A kind of method that utilization tanned wastes chromium mud produces chromium sulfate basic |
| CN114212821A (en) * | 2022-01-07 | 2022-03-22 | 重庆民丰化工有限责任公司 | Method for producing chromium green by using chromic anhydride by-product |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070187A (en) * | 2007-03-15 | 2007-11-14 | 李兴 | Chromium-salt clean production process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101070187A (en) * | 2007-03-15 | 2007-11-14 | 李兴 | Chromium-salt clean production process |
Non-Patent Citations (2)
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| 丁翼 等.《酸泥制碱式硫酸铬》.《铬化合物生产与应用》.化学工业出版社,2003,第233页. * |
| 秦玉楠.用制革废液生产氧化铬绿.《涂料工业》.1991,(第2期),第25-26页. * |
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