CN1031986A - Method with producing iron oxide red from iron borne soot of steel smelting - Google Patents
Method with producing iron oxide red from iron borne soot of steel smelting Download PDFInfo
- Publication number
- CN1031986A CN1031986A CN 87106377 CN87106377A CN1031986A CN 1031986 A CN1031986 A CN 1031986A CN 87106377 CN87106377 CN 87106377 CN 87106377 A CN87106377 A CN 87106377A CN 1031986 A CN1031986 A CN 1031986A
- Authority
- CN
- China
- Prior art keywords
- iron oxide
- raw material
- iron
- washing
- calcining
- 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.)
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 title description 8
- 239000010959 steel Substances 0.000 title description 8
- 238000003723 Smelting Methods 0.000 title description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title description 6
- 239000004071 soot Substances 0.000 title description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 11
- 238000001354 calcination Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000006396 nitration reaction Methods 0.000 claims abstract description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000003500 flue dust Substances 0.000 claims description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000006210 lotion Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims 2
- 238000000498 ball milling Methods 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000001054 red pigment Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 239000000428 dust Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 238000009628 steelmaking Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 235000014347 soups Nutrition 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 241001253206 Andrias Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- -1 iron ion Chemical class 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000012264 purified product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of production method of red iron oxide, be characterized in that with steelmaking oxygen blowing open hearth iron-containing dust be raw material, through nitration mixture leach, calcining changes the material crystalline structure, washing removal of impurities and make the still excellent red iron oxide product of quality.Compared with prior art, week production phase is short, method is simple, fully utilize waste resource and environmental improvement, and raw material abundance, with low cost reduces by 50% than traditional technology production cost, can obtain bigger society and economic benefit.
Description
The present invention relates to a kind of is the novel method of raw material production red iron oxide with fume containing iron from steel smelting, belongs to the production of mineral dye.
Synthesis method is generally adopted in the production of red iron oxide both at home and abroad.Can be divided into " dry method " and " wet method " two kinds by its flow process." dry method " is with the sheet iron of dilute sulphuric acid heating for dissolving less than 2 millimeters, makes ferrous sulfate, forms through calcining again; " wet method " be the ferrous sulfate salts solution under the effect of ironic hydroxide nucleus, oxide deposition and getting.As everyone knows, above-mentioned two kinds of conventional production methods, the production cycle is long, and consumes a large amount of iron sheet raw materials, production cost height.
Along with developing rapidly of Iron And Steel Industry, fume containing iron from steel smelting pollutes aggravation day by day.For a long time, this iron-containing dust does not have feasible solution to be handled, and lets alone to discharge in atmosphere, everywhere dust fall.This has not only caused a large amount of losses of valuable metal element, and has brought severe contamination to surrounding environment.If these iron-containing dusts are captured, as the raw material of production red iron oxide, recycle industrial waste, can not only alleviate or eliminate environmental pollution, also can save the iron sheet raw material simultaneously, reduce the production cost of red iron oxide.Thereby be the comprehensive utilization of fume containing iron from steel smelting and the development of pigment industry, opened up a new way.
Purpose of the present invention just is: seek a kind of industrial waste-fume containing iron from steel smelting that makes full use of, reduce the novel process of red iron oxide production cost, and eliminate environmental pollution.Characteristics of the present invention are that employing open hearth flue dust is a raw material, and its method comprises that acidleach, oven dry, calcining, washing, screening, oven dry wait production red iron oxide product.
Substance of the present invention is: the iron dust containing that is got by the capture of steelmaking oxygen blowing open hearth electric precipitation, it be a kind of under the condition of high temperature aerosol of iron vapor-phase oxidation, the powdered product that cohesion forms in process of cooling, its subparticle is spherule, size composition accounts for more than 90% less than 10 microns, and major ingredient is 80～85%Fe
2O
3, be the fair raw material of production red iron oxide.But wherein foreign matter content is higher, Fe
2O
3Middle γ-Fe
2O
3Account for main body, have ferromagnetism, must handle.The method of handling is: with iron-containing dust and nitration mixture (sulfuric acid: nitric acid＜equivalence ratio 〉=10～14: 1 total acidity is that 11～15N) inputs have in the pickling tank of agitator, logical steam-heated cal(l)andria controlled temperature stirs leaching more than 5 hours down at 70～100 ℃, make the oxide compound of iron partly change the existence of sulphate of iron form into, it is no more than 200 ℃ in baking room inner control temperature, being block crushing back to material drops in the High Temperature Furnaces Heating Apparatus (muffle furnace, rotary kiln or tunnel furnace), calcined 10～14 hours down at 600～690 ℃, make γ-Fe
2O
3Crystalline structure is converted into α-Fe
2O
3Type, remove solubility salts such as Ca, Mg in the calcining material, AL for purified product, then carry out wet ball mill after the material water logging after will calcining while hot, levigate particle diameter accounts for more than 95% less than 320 orders, it is 5～7 that soup compound after levigate is carried out hot wash PH in solution, and does not contain till the Fe ion, and other impurity is entered in the liquid phase, washing solid-liquid weight ratio is 5: 8～12, and temperature is 70 ℃～90 ℃.For guaranteeing the granularity requirements of product, the pulpous state liquid of washing back gained is carried out size sorting through swirler, remove larger particles, at last particle diameter is filtered with filter less than 320 purpose fine grain size post precipitations, with filter cake send in the dryer under 100 ℃～200 ℃ of temperature, dry to moisture content less than 1%, discharging promptly gets the red iron oxide product through crushing packing.
Accompanying drawing: producing iron oxide red from iron borne soot of steel smelting process flow sheet.
Implement example of the present invention below in conjunction with description of drawings.
The nitric acid (2) of 92% sulfuric acid (1) and 60% added respectively in 6: 1 by volume fill in advance in the nitration mixture storage tank (3) of less water, and then to add water move to total acidity be 13N.
Earlier the acid solution (4) of nitration mixture storage tank (3) is put into the pickling tank (5) that has chuck and agitator, then iron-containing dust (6) is slowly dropped into pickling tank (5) under stirring state, by solid-to-liquid ratio is that usefulness steam indirect heating reaction in 1: 0.8 is more than 5 hours, soup compound after the acidleach (7) is put into charging tray to be placed in the baking room (8), under 200 ℃, dry to moisture content less than 5%, block (9) after the oven dry is sent into crusher (10) suitably to be smashed, with the block after smashing (11) rotary kiln (12) of packing into, calcined 12 hours down at 690 ℃, to calcine after the blow-on material (13) while hot water pour ball mill (14) and carry out wet ball mill, soup compound after levigate (15) inflow is had in the tank (16) of agitator, press the solid-liquid weight ratio down at 80 ℃ and stir washing 30 minutes at 1: 2, place clarification back abandoning supernatant, repeatedly several times, in water lotion till the no iron ion of routine check and PH are 5～7.Slurries (1) after the washing are entered in the swirler (18) and carry out sorting repeatedly, remove larger particles (19), collect particle diameter say to sleep through less than 320 purpose fine-grained sediments suck 0), the charging tray of packing into places in the stoving oven (21), under 150 ℃, dry to moisture content less than 1%.The oven dry material is treated to pulverize behind the naturally cooling, packing promptly gets red iron oxide product (22).
The present invention propose through simple processes such as acidleach processing, calcining transformation and washing removal of impurities, successfully problem has obtained the inaccessible good result of conventional method, its product analysis the results are shown in Table.
The present invention compared with prior art has the following advantages: with short production cycle, method is simple, the comprehensive utilization industrial waste, and the raw material abundance, with low cost, product quality is still excellent. Administer simultaneously environment, eliminated pollution. And significant society and economic benefit have been obtained.
The red iron oxide analytical results
Claims (7)
1, a kind of is the method that raw material is made red pigment with the iron dust containing, and being particularly suitable for the open hearth flue dust is the novel method that raw material is produced red iron oxide, and it comprises that diluted acid processing iron sheet makes ferrous salt and forms through calcining.The invention is characterized in that adopting the open hearth flue dust is raw material, carries out acidleach, oven dry, calcination, ball milling, washing, screening, oven dry and promptly gets the red iron oxide product.
2, method according to claim 1, what it is characterized in that wherein acidleach uses is nitration mixture (sulfuric acid and nitric acid), nitration mixture is a sulfuric acid than (by volume): nitric acid is 5～6: 1, and total acidity is 11～15N; The acidleach solid-to-liquid ratio is 1: 0.7～0.8; 70～100 ℃ of temperature; Stirring reaction is more than 5 hours.
3, method according to claim 1 is characterized in that oven dry wherein can adopt baking room drying plants such as (or drying kilns), controlled temperature be no more than dry under 200 ℃ to moisture less than 5%.
4, method according to claim 1 is characterized in that calcining wherein can adopt calciners such as muffle furnace, rotary kiln or tunnel furnace, and temperature is controlled at 600～690 ℃ and kept 10～14 hours down.
5, method according to claim 1 is characterized in that washing wherein is to add water washing behind the calcining material wet ball mill, and solid-to-liquid ratio (by weight) is 5: 8～12, washes 3～5 times down at 70～90 ℃, to water lotion pH value 5～7.
6, method according to claim 1 is characterized in that particle screen selecting wherein is through swirler sorting, wet filter with the slurries after the washing.
7, method according to claim 1 is characterized in that screening gained powder material, temperature be controlled at 100～200 ℃ dry to moisture content less than 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87106377 CN1011961B (en) | 1987-09-14 | 1987-09-14 | Method for producing iron oxide red from iron borne soot of steel smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87106377 CN1011961B (en) | 1987-09-14 | 1987-09-14 | Method for producing iron oxide red from iron borne soot of steel smelting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031986A true CN1031986A (en) | 1989-03-29 |
| CN1011961B CN1011961B (en) | 1991-03-13 |
Family
ID=4815674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87106377 Expired CN1011961B (en) | 1987-09-14 | 1987-09-14 | Method for producing iron oxide red from iron borne soot of steel smelting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011961B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314675A (en) * | 2022-01-13 | 2022-04-12 | 鞍钢股份有限公司 | Pure iron powder fuel and preparation and application methods thereof |
-
1987
- 1987-09-14 CN CN 87106377 patent/CN1011961B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314675A (en) * | 2022-01-13 | 2022-04-12 | 鞍钢股份有限公司 | Pure iron powder fuel and preparation and application methods thereof |
| CN114314675B (en) * | 2022-01-13 | 2023-12-15 | 鞍钢股份有限公司 | Pure iron powder fuel and preparation and application methods thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1011961B (en) | 1991-03-13 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |