CN103193277B - Method for preparing iron oxide red pigment through copperas - Google Patents
Method for preparing iron oxide red pigment through copperas Download PDFInfo
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- CN103193277B CN103193277B CN201310117387.4A CN201310117387A CN103193277B CN 103193277 B CN103193277 B CN 103193277B CN 201310117387 A CN201310117387 A CN 201310117387A CN 103193277 B CN103193277 B CN 103193277B
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- Prior art keywords
- ferric oxide
- oxide red
- ferrous sulfate
- drying
- green vitriol
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- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 title claims abstract description 73
- 229910000359 iron(II) sulfate Inorganic materials 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 29
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000001054 red pigment Substances 0.000 title abstract 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229960005191 ferric oxide Drugs 0.000 claims abstract description 44
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 31
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 18
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 7
- 239000001062 red colorant Substances 0.000 claims description 23
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 22
- 239000013078 crystal Substances 0.000 claims description 16
- 239000000706 filtrate Substances 0.000 claims description 15
- 238000001354 calcination Methods 0.000 claims description 14
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 238000006396 nitration reaction Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 238000001953 recrystallisation Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 238000005422 blasting Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000001117 sulphuric acid Substances 0.000 claims description 5
- 235000011149 sulphuric acid Nutrition 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 239000012535 impurity Substances 0.000 abstract description 6
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000010936 titanium Substances 0.000 abstract description 2
- 229910052719 titanium Inorganic materials 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000011572 manganese Substances 0.000 abstract 1
- 239000012047 saturated solution Substances 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 239000001166 ammonium sulphate Substances 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000001038 titanium pigment Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- -1 iron ion Chemical class 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
The invention relates to a method for preparing an iron oxide red pigment through copperas, and belongs to the field of microwave heating application and material preparation. The method mainly comprises the following preparation processes of: recrystallizing the copperas; adding strong conductive phase ferric oxide; drying ferrous sulfate; roasting and decomposing; washing iron oxide red by water; and drying, wherein the dissolving temperature in the recrystallizing process is controlled to 70 to 90 DEG C; adding few iron scraps; adjusting the pH (Potential Of Hydrogen) of the saturated solution to 2.0 to 2.5 by sulfur-phosphorus mixed acid; removing few impurities such as titanium, manganese and magnesium; adding strong conductive phase ferric oxide red to the obtained purified ferrous sulfate; due to the characteristics of the microwave of fast heating and selective heating, heating by the microwave to remove the free water and the crystallization water; finally carrying out the roasting at 800 to 900 DEG C, absorbing the smoke for preparing sulfuric acid; washing the product by water and drying, thus the first-class oxide red pigment is obtained. According to the method for preparing the iron oxide red pigment through the copperas, the microwave is utilized for uniformly heating, thus the thermal efficiency is high, the cleanness can be ensured, and no pollution is brought; and the recrystallizing and impurity removing processes are introduced prior to roasting, thus the sulfur trioxide generated in the process can be absorbed and used for preparing the sulfuric acid.
Description
Technical field
The present invention relates to a kind of method that green vitriol prepares ferric oxide red colorant, belong to microwave heating application and field of material preparation.
Background technology
Ferrous sulfate, also known as green vitriol, is the solid waste in sulfuric acid method titanium pigment production process, often produces 1 t titanium dioxide, will produce the iron vitriol FeSO of 3t ~ 3.2t
47H
2o.According to statistics, within 2010, domestic green vitriol output is more than 3,000,000 tons, if so huge green vitriol is not processed, not only wastes limited resources, and can to environment.Current green vitriol is mainly used as fodder additives, water purification agent, fertilizer, but consumption is all less.If be used for the ferric oxide red colorant of production high added value, not only can solve the problem, and considerable economic benefit can be brought.
Ferric oxide red colorant is as a kind of conventional pigment, it has higher chemistry and physical stability, high covering power and the various superperformance such as nontoxic of color, be widely used in the fields such as rubber, paint, pottery, papermaking, printing ink paint, ferric oxide red colorant is the second largest mineral dye being only second to titanium dioxide, the current ferric oxide red colorant market requirement is large, and be worth high, market outlook are good.
Known ferric oxide red colorant production method mainly contains wet method and dry method.Produce iron oxide red as Xia Jupei etc. have studied by-product of white titanium pigment green vitriol oxidizing roasting method, it adopts and obtains red iron oxide to after green vitriol dinectly bruning, and in this method products obtained therefrom, impurities left is more; Xiaxin's stamen etc. adopt dry method to produce ferric oxide red colorant in addition, and it adopts multistep to calcine, the 4h that reaches consuming time, and product color is poor adds coating treatment step owing to obtaining.In addition Chinese patent CN1903735A
Disclose the method by ferrous sulfate production red iron oxide, it adopts the method production red iron oxide of ammonia neutralization dioxygen oxidation, obtains red iron oxide content 98%, and it produces ammonium sulphate waste liquor still needs further process.
Summary of the invention
The present invention proposes a kind of method that green vitriol prepares ferric oxide red colorant, the shortcoming that ferric oxide red colorant foreign matter content is high, calcination time is long existed for calcining dry method and the unmanageable drawback of wet process technique ammonium sulphate waste liquor, utilize the advantage that the conventional heating modes such as microwave heating is even, thermo-efficiency is high, cleanliness without any pollution are incomparable, by introducing recrystallization removal of impurities operation before calcination, and the sulphur trioxide that absorption process produces manufactures sulfuric acid.
Technical scheme concrete grammar of the present invention realizes as follows:
(1) under the temperature condition of 70 ~ 90 DEG C, industrial green vitriol and distilled water are carried out mixing and stirring 40 ~ 60min according to solid-to-liquid ratio 0.2 ~ 0.3:1kg/L, after filtration, obtains copperas solution;
(2) in copperas solution, iron filings are added according to solid-to-liquid ratio 0.02 ~ 0.03:1kg/L, be 2.0 ~ 2.5 by the pH value of sulphur-phosphorus nitration mixture regulator solution, then solution is heated to more than 70 DEG C and the ferrous sulfate filtrate of filtering pure, ferrous sulfate filtrate is filtered and is obtained ferrous sulfate crystal after naturally cooling recrystallization, and filtrate returns dissolves industrial green vitriol;
(3) according to strong conductive phase ferric oxide: ferrous sulfate crystal mass is than 1 ~ 3:9 ~ 7, strong conductive phase ferric oxide to be added in the ferrous sulfate crystal obtained in step (2) and to mix, then microwave environment calcining and decomposing is placed in, regulate microwave output power 6 ~ 15kW, temperature of charge is controlled 800 ~ 900 DEG C, the air amount of blasting is 500 ~ 1200m
3/ h, obtains croci after calcining 20 ~ 40min, and flue gas passes into after sulphuric acid soln absorption for the production of sulfuric acid through exhausting system.
(4) step (3) is calcined the croci prepared and obtain ferric oxide red colorant through washing also drying.Characterize by analysis, red iron oxide product reaches the requirement of GB GB1863-89 first grade.
Described iron filings are chemical pure iron powder, and granularity is 200 ~ 250 orders.
Described sulphur-phosphorus nitration mixture is mixed to get according to the mass ratio 1:1.5 ratio of sulfuric acid and phosphoric acid, and sulfuric acid and phosphoric acid are technical grade.
Described strong conductive phase ferric oxide refers to containing the croci of strong suction ripple substance oxidation iron level at more than 98wt%.
Drying is under the condition of temperature 80 ~ 120 DEG C in described step (4), time of drying 10 ~ 30min.
Advantage of the present invention and positively effect are:
(1) impurity such as sulphur-phosphorus nitration mixture control ph hydrolysis removing titanium are adopted in recrystallization.The complexing action of phosphoric acid to iron ion is utilized more effectively to remove impurity, the principle purification ferrous sulfate simultaneously utilizing ferrous sulfate solubility with temperature to change greatly;
(2) POV ferrous iron effectively removes free water and crystal water in green vitriol through microwave heating and obtains anhydrous slufuric acid ferrous iron, avoids acid mist to be formed, is conducive to production direct motion;
(3) enhance microwave heating process by adding strong conductive phase red iron oxide as product inductor, calcination time shortens greatly;
(4) present method is prepared ferric oxide red colorant and is not produced waste liquid, environment-friendly high-efficiency.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with (accompanying drawing and) embodiment, the invention will be further described.
Embodiment one: as shown in Figure 1, the step that the present embodiment green vitriol prepares ferric oxide red colorant is:
(1) under the temperature condition of 70 DEG C, industrial green vitriol and distilled water are carried out mixing and stirring 50min according to solid-to-liquid ratio 0.2:1kg/L, after filtration, obtains copperas solution;
(2) in copperas solution, adding granularity according to solid-to-liquid ratio 0.02:1kg/L is 200 ~ 250 object chemical pure iron powders, be 2.0 by the pH value of sulphur-phosphorus nitration mixture regulator solution, then solution is heated to 75 DEG C and the ferrous sulfate filtrate of filtering pure, ferrous sulfate filtrate is filtered and is obtained ferrous sulfate crystal after naturally cooling recrystallization, and filtrate returns dissolves industrial green vitriol; Sulphur-phosphorus nitration mixture is mixed to get according to the mass ratio 1:1.5 ratio of sulfuric acid and phosphoric acid, and sulfuric acid and phosphoric acid are technical grade.
(3) according to strong conductive phase ferric oxide: ferrous sulfate crystal mass compares 1:9, strong conductive phase ferric oxide to be added in the ferrous sulfate crystal obtained in step (2) and to mix, then microwave environment calcining and decomposing is placed in, regulate microwave output power 6kW, temperature of charge is controlled 900 DEG C, the air amount of blasting is 1000m
3/ h, obtains croci after calcining 20min, and flue gas passes into after sulphuric acid soln absorption for the production of sulfuric acid through exhausting system.Strong conductive phase ferric oxide refers to containing the croci of strong suction ripple substance oxidation iron level at more than 98wt%.
(4) step (3) is calcined the croci for preparing through washing and drying obtains ferric oxide red colorant, drying is under the condition of temperature 80 DEG C, time of drying 30min.Characterize by analysis, red iron oxide product reaches the requirement of GB GB1863-89 first grade.
Embodiment two: as shown in Figure 1, the step that the present embodiment green vitriol prepares ferric oxide red colorant is:
(1) under the temperature condition of 90 DEG C, industrial green vitriol and distilled water are carried out mixing and stirring 40min according to solid-to-liquid ratio 0.28:1kg/L, after filtration, obtains copperas solution;
(2) in copperas solution, adding granularity according to solid-to-liquid ratio 0.025:1kg/L is 220 ~ 250 object chemical pure iron powders, be 2.5 by the pH value of sulphur-phosphorus nitration mixture regulator solution, then solution is heated to more than 70 DEG C and the ferrous sulfate filtrate of filtering pure, ferrous sulfate filtrate is filtered and is obtained ferrous sulfate crystal after naturally cooling recrystallization, and filtrate returns dissolves industrial green vitriol; Sulphur-phosphorus nitration mixture is mixed to get according to the mass ratio 1:1.5 ratio of sulfuric acid and phosphoric acid, and sulfuric acid and phosphoric acid are technical grade.
(3) according to strong conductive phase ferric oxide: ferrous sulfate crystal mass compares 1:4, strong conductive phase ferric oxide to be added in the ferrous sulfate crystal obtained in step (2) and to mix, then microwave environment calcining and decomposing is placed in, regulate microwave output power 15kW, temperature of charge is controlled 800 DEG C, the air amount of blasting is 500m
3/ h, obtains croci after calcining 40min, and flue gas passes into after sulphuric acid soln absorption for the production of sulfuric acid through exhausting system.Strong conductive phase ferric oxide refers to containing the croci of strong suction ripple substance oxidation iron level at more than 98wt%.
(4) step (3) is calcined the croci for preparing through washing and drying obtains ferric oxide red colorant, drying is under the condition of temperature 100 DEG C, time of drying 10min.Characterize by analysis, red iron oxide product reaches the requirement of GB GB1863-89 first grade.
Embodiment three: as shown in Figure 1, the step that the present embodiment green vitriol prepares ferric oxide red colorant is:
(1) under the temperature condition of 80 DEG C, industrial green vitriol and distilled water are carried out mixing and stirring 60min according to solid-to-liquid ratio 0.3:1kg/L, after filtration, obtains copperas solution;
(2) in copperas solution, adding granularity according to solid-to-liquid ratio 0.03:1kg/L is 200 ~ 250 object chemical pure iron powders, be 2.3 by the pH value of sulphur-phosphorus nitration mixture regulator solution, then solution is heated to 80 DEG C and the ferrous sulfate filtrate of filtering pure, ferrous sulfate filtrate is filtered and is obtained ferrous sulfate crystal after naturally cooling recrystallization, and filtrate returns dissolves industrial green vitriol; Sulphur-phosphorus nitration mixture is mixed to get according to the mass ratio 1:1.5 ratio of sulfuric acid and phosphoric acid, and sulfuric acid and phosphoric acid are technical grade.
(3) according to strong conductive phase ferric oxide: ferrous sulfate crystal mass compares 3:7, strong conductive phase ferric oxide to be added in the ferrous sulfate crystal obtained in step (2) and to mix, then microwave environment calcining and decomposing is placed in, regulate microwave output power 10kW, temperature of charge is controlled 880 DEG C, the air amount of blasting is 1200m
3/ h, obtains croci after calcining 30min, and flue gas passes into after sulphuric acid soln absorption for the production of sulfuric acid through exhausting system.Strong conductive phase ferric oxide refers to containing the croci of strong suction ripple substance oxidation iron level at more than 98wt%.
(4) step (3) is calcined the croci for preparing through washing and drying obtains ferric oxide red colorant, drying is under the condition of temperature 120 DEG C, time of drying 15min.Characterize by analysis, red iron oxide product reaches the requirement of GB GB1863-89 first grade.
Above (by reference to the accompanying drawings) the specific embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (4)
1. green vitriol prepares a method for ferric oxide red colorant, it is characterized in that concrete steps comprise as follows:
(1) under the temperature condition of 70 ~ 90 DEG C, industrial green vitriol and distilled water are carried out mixing and stirring 40 ~ 60min according to solid-to-liquid ratio 0.2 ~ 0.3:1kg/L, after filtration, obtains copperas solution;
(2) in copperas solution, iron filings are added according to solid-to-liquid ratio 0.02 ~ 0.03:1kg/L, be 2.0 ~ 2.5 by the pH value of sulphur-phosphorus nitration mixture regulator solution, then solution is heated to more than 70 DEG C and the ferrous sulfate filtrate of filtering pure, ferrous sulfate filtrate is filtered and is obtained ferrous sulfate crystal after naturally cooling recrystallization, and filtrate returns dissolves industrial green vitriol;
(3) according to strong conductive phase ferric oxide: ferrous sulfate crystal mass is than 1 ~ 3:9 ~ 7, strong conductive phase ferric oxide to be added in the ferrous sulfate crystal obtained in step (2) and to mix, then microwave environment calcining and decomposing is placed in, regulate microwave output power 6 ~ 15kW, temperature of charge is controlled 800 ~ 900 DEG C, the air amount of blasting is 500 ~ 1200m
3/ h, obtains croci after calcining 20 ~ 40min, and flue gas passes into after sulphuric acid soln absorption for the production of sulfuric acid through exhausting system; Wherein said strong conductive phase ferric oxide refers to containing the croci of strong suction ripple substance oxidation iron level at more than 98wt%;
(4) step (3) is calcined the croci prepared and obtain ferric oxide red colorant through washing also drying.
2. green vitriol according to claim 1 prepares the method for ferric oxide red colorant, it is characterized in that: described iron filings are chemical pure iron powder, and granularity is 200 ~ 250 orders.
3. green vitriol according to claim 1 prepares the method for ferric oxide red colorant, it is characterized in that: described sulphur-phosphorus nitration mixture is mixed to get according to the mass ratio 1:1.5 ratio of sulfuric acid and phosphoric acid, and sulfuric acid and phosphoric acid are technical grade.
4. green vitriol according to claim 1 prepares the method for ferric oxide red colorant, it is characterized in that: drying is under the condition of temperature 80 ~ 120 DEG C in described step (4), time of drying 10 ~ 30min.
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| CN103193277B true CN103193277B (en) | 2015-01-28 |
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| CN104058463B (en) * | 2013-10-30 | 2016-02-03 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of preparation method of the ferric oxide for hard magnetic material |
| CN105217694A (en) * | 2015-08-26 | 2016-01-06 | 昆明理工大学 | A kind of method preparing red iron oxide and ammonium chloride |
| CN105366736B (en) * | 2015-11-11 | 2017-09-22 | 深圳市长隆科技有限公司 | A kind of method of titanium white by product thing green vitriol dehydration with drying |
| CN106564959B (en) * | 2016-10-28 | 2017-11-10 | 昆明理工大学 | A kind of iron oxide red seed crystal preparation vessel and preparation method thereof |
| CN106564960B (en) * | 2016-10-28 | 2017-11-10 | 昆明理工大学 | A kind of iron oxide red synth sink |
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|---|---|---|---|---|
| CN1336327A (en) * | 2000-08-02 | 2002-02-20 | 湖南株洲化工集团有限责任公司 | Process of producing high-purity magnetic iron oxide with ferous sulfate as by-product of titanium white production |
| CN102181628A (en) * | 2011-03-30 | 2011-09-14 | 攀钢集团有限公司 | Method for producing rich iron ore from ferrous sulfate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62119119A (en) * | 1985-11-15 | 1987-05-30 | Kawasaki Steel Corp | Production of fine iron oxide |
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|---|---|---|---|---|
| CN1336327A (en) * | 2000-08-02 | 2002-02-20 | 湖南株洲化工集团有限责任公司 | Process of producing high-purity magnetic iron oxide with ferous sulfate as by-product of titanium white production |
| CN102181628A (en) * | 2011-03-30 | 2011-09-14 | 攀钢集团有限公司 | Method for producing rich iron ore from ferrous sulfate |
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| Title |
|---|
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| 微波煅烧绿矾制备铁精粉;余延涛 等;《非金属矿》;20121130;第35卷(第6期);53-56 * |
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