CN1125196A - Producing iron oxide yellow (red) by using non-scale method containing iron offscum - Google Patents
Producing iron oxide yellow (red) by using non-scale method containing iron offscum Download PDFInfo
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- CN1125196A CN1125196A CN 95111044 CN95111044A CN1125196A CN 1125196 A CN1125196 A CN 1125196A CN 95111044 CN95111044 CN 95111044 CN 95111044 A CN95111044 A CN 95111044A CN 1125196 A CN1125196 A CN 1125196A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 65
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000003647 oxidation Effects 0.000 claims abstract description 34
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 11
- 239000003818 cinder Substances 0.000 claims abstract description 8
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052683 pyrite Inorganic materials 0.000 claims abstract description 8
- 239000011028 pyrite Substances 0.000 claims abstract description 8
- 230000002829 reductive effect Effects 0.000 claims abstract description 8
- 239000002699 waste material Substances 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims abstract description 5
- 239000012141 concentrate Substances 0.000 claims abstract description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 25
- 229910021529 ammonia Inorganic materials 0.000 claims description 21
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000002893 slag Substances 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 12
- 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 claims description 10
- 238000007599 discharging Methods 0.000 claims description 8
- 230000003472 neutralizing effect Effects 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 238000002386 leaching Methods 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 5
- 239000003245 coal Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000005243 fluidization Methods 0.000 claims description 4
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- 235000000177 Indigofera tinctoria Nutrition 0.000 claims description 3
- 230000003311 flocculating effect Effects 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 229940097275 indigo Drugs 0.000 claims description 3
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 claims description 3
- 239000002817 coal dust Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000005204 segregation Methods 0.000 claims description 2
- 238000005189 flocculation Methods 0.000 claims 6
- 230000016615 flocculation Effects 0.000 claims 6
- 230000009469 supplementation Effects 0.000 claims 4
- 238000007885 magnetic separation Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 3
- 239000002440 industrial waste Substances 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 235000003891 ferrous sulphate Nutrition 0.000 abstract 1
- 239000011790 ferrous sulphate Substances 0.000 abstract 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 229910052602 gypsum Inorganic materials 0.000 description 4
- 239000010440 gypsum Substances 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001034 iron oxide pigment Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 235000021110 pickles Nutrition 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The method using industrial waste residues of iron-rich ooze, pyrite cinder, iron scale, iron-containing smoke dust and iron ore as raw materials to produce iron oxide yellow (red) instead of scale method is characterized by that according to the different iron-containing waste residues, the different pretreatment processes are adopted, the choice concentrate is reduced to divalent iron by using reducing agent in fluidized reduction furnace under the condition of high temp., then the above-mentioned material is passed through such processes of acid-soaking and purification to prepare high-purity ferrous sulfate solution. Its air oxidation uses a negative pressure air charging system. It shortens production period and saves equipment and electric energy.
Description
The present invention is a kind of trade waste that utilizes---iron slag is a raw material, adopts the gas-liquid two-phase non-scale method to produce iron oxide yellow (red).
Utilize iron slag (liquid) wet production iron oxide pigment, reported in literature is all arranged both at home and abroad, be about to spent pickle liquor and after purifying, transfer pH value, add excessive iron sheet ferric iron is reduced to ferrous iron with sulfuric acid.Iron sheet is the soft steel scrap stock, and the quantity demand is very big, and second oxidation still adds excessive iron sheet, adopts conventional production methods, and the production cycle is longer; Utilize the also existing patent (CN85105994A) of steel mill's spent pickle liquor gas-liquid two-phase production red iron oxide, but also need add excessive iron sheet is reductive agent.
Deficiency in view of the prior art existence, the objective of the invention is to adopt a kind of novel process, make raw material with industrial waste fully, (only in the copperas solution of storing, adding a small amount of iron sheet) to prevent solution oxide, so just can make full use of waste, eliminate its pollution environment.Production cycle also shortens greatly simultaneously, both can produce iron oxide yellow, red iron oxide, can obtain the batching of by-produced gypsum as material of construction again.
Substance of the present invention is as follows: at first iron slag is carried out pre-treatment.Iron slag comprises that the various iron mud that discharge in the dye chemical industry factory production process, sulfurous iron ore oxidizing roasting produces the burning slag that produces in the sulfuric acid process, iron scale, Steel Plant's utilizing smoke dust of oxygen blast open-hearth furnace and the iron ore etc. that Steel Mill's high temperature backing steel piece surface comes off.In order to improve its all iron content, pulverized 12～20 mesh sieves for the different pyrite cinder of iron-holder after, carry out the magnetic force sorting and obtain all iron content and surpass 65% washed ore; Can adopt similar magnetic force sorting or gravitational segregation technology for the low waste residue of other iron-holder.The concentrate of selecting is evenly admixed pulverized anthracite, and excess coefficient 1.8～3.0 reduced 30～60 minutes under 700～800 ℃ of temperature through the fluidisation reduction furnace.With the iron mud of producing the discharging of mphenylenediamine intermediate is raw material, then decolours earlier in the fluidisation reduction furnace and afterwards reduces.According to the different activities of raw material, for the sulfuric acid to leach of pyrite cinder, the iron mud of producing indigo or mphenylenediamine discharging, iron scale, iron-containing dust ash, iron ore etc. available 20～70%, fully reaction back thin up is to solid-to-liquid ratio 0.2～0.3, so that filter; Temperature of reaction is 75～90 ℃, in 20 minutes reaction times, the polyacrylamide flocculant and the additive of adding a small amount of 0.1～1.0% are promptly removed metallic impurity with the chemical coprecipitation principle in the immersion liquid, supernatant liquid is high-purity copperas solution, can be used as the raw materials for production of iron oxide pigment.In order to prevent the copperas solution oxidation by air, add iron sheet and make reductive agent (the iron sheet consumption is few), be 4.5～5.5 until pH value.In and oxidizing reaction adopt the gas-liquid two-phase reaction process, without iron sheet, during previously prepd iron oxide yellow (red) crystal seed added and the oxidation bucket, 75～85 ℃ of logical steam heating, because the negative pressure ventilation device of band Venturi tube is housed in the oxidation bucket, concentration is that 5～7% copperas solution circulates with recycle pump by pipeline in the bucket, air and ammonia steam since suction function also simultaneously by in the suction oxidation bucket rapidly, thereby accelerate oxidising process greatly, pH value is controlled in 3～6 the scope, at this moment the crystal grain of iron oxide yellow (red) is constantly grown up, and generates bright-coloured product iron oxide yellow (red) at last.After judging that according to color iron oxide yellow (red) is qualified, filter again, wash, dry, pulverize product iron oxide yellow (red).Filtrate filtered places in the ammonia still process groove of strap clamp cover, use steam heating, temperature is controlled at 95～110 ℃, feed little air, and adding lime ammonia still process, excess coefficient is about 1.2, makes neutralizing agent and thermal source with the oxidation bucket during the ammoniated steam of output turns back to by closed circuit pipeline, so that make full use of ammonia vapour physics heat.Residue slurry after the ammonia still process is through filtering, and its residue is a gypsum, can be used for cement ingredient or decorative panel for building.The washing sour water neutralize with lime, leave standstill 24 hours after, the upper strata clear water can be recycled.
The product iron oxide red promptly changed new high-purity mangesium oxide iron oxide red, α-Fe in one hour into through 700～800 ℃ of roastings
2O
3Content can reach more than 98.0%, can be used as the raw materials for production of ferrite magnetic material.
It is the requirement of raw material that the present invention has thoroughly removed with the soft steel sheet iron, adopt the negative pressure ventilation device, shortened the production cycle, time of producing iron oxide yellow (red) is reduced to about 20 hours from 3～4 days of conventional iron pico farad, 6～7 times of saves energy, and iron oxide yellow (red) is superior in quality, thoroughly eliminates the carbon dirt of bringing into owing to a large amount of iron sheet consumption in the second oxidation and dyes, waste material is fully utilized, and production cost reduces about 600 yuan/ton than iron sheet method; Ammonia still process is returned the oxidation bucket and is recycled, and utilizes the ammonia still process thermal source, and product per ton only need replenish about liquefied ammonia 70kg, and alkali consumption greatly reduces, and by-produced gypsum is as the building materials raw material; Sour water after the washing is with recycling non-secondary pollution in the lime He after the sedimentation.
Embodiment 1:
After pyrite cinder crossed 12～20 mesh sieves, select concentrate with magnetic separator, its all iron content is brought up to more than 65%, and the hard coal coal dust is evenly admixed in washed ore, excess coefficient 2.0, drop into the fluidisation reduction furnace continuously, about 800 ℃ of furnace temperature, continuously feeding, discharging continuously, high-temperature material is put into the airtight reduction bucket of band thermal insulation layer, in bucket, carry out 40 minutes reduction reaction, cooling discharging, pyrite cinder becomes the aterrimus powder by original brown; The leaching condition is: sulfuric acid concentration 25%, and excess coefficient 1.05, about 80 ℃ of temperature of reaction were reacted 20 minutes, filtered while hot, supernatant liquid is high-purity copperas solution.Under stirring state, in solution, carry out flocculating settling by 5mg/L adding polyacrylamide and a little ammoniacal liquor, add a small amount of iron sheet in the filtrate and store.
In and oxidation adopt the gas-liquid two-phase reaction process: the iron oxide yellow that will prepare (red) crystal seed place respectively and the oxidation bucket in, by being steam heated to 80～85 ℃, start recycle pump, because suction function, charge into air, concentration is 5～7% copperas solution and contains ammonia steam and also controlled by valve, the band Venturi tube of flowing through respectively pipeline, in feeding continuously and the oxidation bucket, so that strengthening transfer process shortens reaction time.In the slip in this moment oxidation bucket and oxygenizement evenly abundant, pH value 3～6 o'clock, slurries are retrogradation gradually, is reaction end (at this moment the iron oxide yellow mill base is mixed colours with a small amount of rare nitric acid) when color reaches the reference colour light time.About 20 hours of whole process of production, the technical indicator of product iron oxide yellow (red) reaches GB1862-80 and GB1863-89-HO respectively
01-02The first grade requirement, its α-Fe
2O
3Content is respectively 88.5% and 96.0%.The filtrate of slurries adds lime and feeds in the strap clamp cover ammonia still process groove, feeds little air, with being steam heated to about 100 ℃, ammonia still process continuously, the ammoniated steam of institute's output, in then can returning by pipeline and the oxidation bucket do neutralizing agent and thermal source use.Residue slurry after the ammonia still process obtains by-produced gypsum behind vacuum filtration.
Embodiment 2:
Iron mud with the discharging of production mphenylenediamine is raw material, without sorting, restores 30 minutes after 30 minutes through 800 ℃ of oxidations earlier after the drying and crushing.Other condition is the same, obtains identical result.
Embodiment 3:
With the iron scale is raw material, uses 70% sulfuric acid to leach, and other processing step obtains identical result with example 1.
The product iron oxide red obtains the spherical red iron oxide of new high purity, its α-Fe through 750 ℃ of roastings in a hour of retort furnace
2O
3Content is 98.4%.
Claims (9)
1. a method of producing iron oxide yellow (red) with the iron slag non-scale method is characterized in that: according to the different pretreatment technology of different properties employing of iron slag raw material; The concentrate of selecting after the drying sorting adds hard coal and makes reductive agent, is raw material with the iron mud of producing the discharging of mphenylenediamine intermediate, then initial oxidation decolouring back reduction in the fluidisation reduction furnace; According to the different activities of the raw material sulfuric acid to leach with different concns, leaching liquid adds a small amount of additive and flocculation agent flocculation, filters, in and oxidation adopt the gas-liquid two-phase reaction, make neutralizing agent with ammonia, the atmospheric oxidation device adopts recycle pump negative pressure inflation mechanism.
2. method of producing iron oxide yellow (red) with the iron slag non-scale method according to claim 1 is characterized in that: described " pretreatment technology " is meant to cross for the different pyrite cinder of iron-holder and carries out the magnetic force sorting behind 12～20 mesh sieves and obtain all iron content and surpass 65% washed ore; Also adopt similar magnetic separation or gravitational segregation technology for the low waste residue of other iron-holder.
3. method of producing iron oxide yellow (red) with the iron slag non-scale method according to claim 1 and 2, it is characterized in that: described " making reductive agent with hard coal " is meant and evenly admixes the hard coal coal dust, excess coefficient 1.8～3.0,700～800 ℃ of reduction temperatures, 30～60 minutes recovery times.
4. method of producing iron oxide yellow (red) with the iron slag non-scale method according to claim 1 and 2, it is characterized in that: described " using the sulfuric acid to leach of different concns according to the different activities of raw material; leaching liquid adds a small amount of additive and flocculation agent flocculation; filter " is meant because pyrite cinder, produce the iron mud of dischargings such as indigo or mphenylenediamine, iron scale, the iron-containing dust ash, the active difference of iron ore, usable concentration is 20%～70% sulfuric acid to leach, solid-to-liquid ratio 0.2～0.3,75～90 ℃ of leaching temperatures, the polyacrylamide that adds a small amount of additive and 0.1～1% in the immersion liquid carries out flocculating settling, putting into iron sheet in the filtrate and leave standstill, is 4.5～5.5 until pH value.
5. method of producing iron oxide yellow (red) with the iron slag non-scale method according to claim 3, it is characterized in that: described " using the sulfuric acid to leach of different concns according to the different activities of raw material; leaching liquid adds a small amount of additive and flocculation agent flocculation; filter " is meant because pyrite cinder, produce the iron mud of dischargings such as indigo or mphenylenediamine, iron scale, the iron-containing dust ash, the active difference of iron ore, usable concentration is 20%～70% sulfuric acid to leach, solid-to-liquid ratio 0.2～0.3,75～90 ℃ of leaching temperatures, the polyacrylamide that adds a small amount of additive and 0.1～1% in the immersion liquid carries out flocculating settling, putting into iron sheet in the filtrate and leave standstill, is 4.5～5.5 until pH value.
6. method of producing iron oxide yellow (red) with the iron slag non-scale method according to claim 1 and 2, it is characterized in that: described " in and oxidation adopt the gas-liquid two-phase reaction; make neutralizing agent with ammonia; the atmospheric oxidation device adopts recycle pump negative pressure inflation mechanism " be meant in and oxidation adopt the gas-liquid two-phase reaction, without iron sheet, temperature is controlled at 75～85 ℃, pH value 3～6, fills atmospheric oxidation, continuous supplementation copperas solution and ammonia; Adopt recycle pump to make the slurries circulation, slurry stream is through the negative pressure ventilation device of band Venturi tube.
7. method of producing iron oxide yellow (red) with the iron slag non-scale method according to claim 3, it is characterized in that: described " in and oxidation adopt the gas-liquid two-phase reaction; make neutralizing agent with ammonia; the atmospheric oxidation device adopts recycle pump negative pressure inflation mechanism " be meant in and oxidation adopt the gas-liquid two-phase reaction, without iron sheet, temperature is controlled at 75～85 ℃, pH value 3～6, fills atmospheric oxidation, continuous supplementation copperas solution and ammonia; Adopt recycle pump to make the slurries circulation, slurry stream is through the negative pressure ventilation device of band Venturi tube.
8. method of producing iron oxide yellow (red) with the iron slag non-scale method according to claim 4, it is characterized in that: described " in and oxidation adopt the gas-liquid two-phase reaction; make neutralizing agent with ammonia; the atmospheric oxidation device adopts recycle pump negative pressure inflation mechanism " be meant in and oxidation adopt the gas-liquid two-phase reaction, without iron sheet, temperature is controlled at 75～85 ℃, pH value 3～6, fills atmospheric oxidation, continuous supplementation copperas solution and ammonia; Adopt recycle pump to make the slurries circulation, slurry stream is through the negative pressure ventilation device of band Venturi tube.
9. method of producing iron oxide yellow (red) with the iron slag non-scale method according to claim 5, it is characterized in that: described " in and oxidation adopt the gas-liquid two-phase reaction; make neutralizing agent with ammonia; the atmospheric oxidation device adopts recycle pump negative pressure inflation mechanism " be meant in and oxidation adopt the gas-liquid two-phase reaction, without iron sheet, temperature is controlled at 75～85 ℃, pH value 3～6, fills atmospheric oxidation, continuous supplementation copperas solution and ammonia; Adopt recycle pump to make the slurries circulation, slurry stream is through the negative pressure ventilation device of band Venturi tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111044 CN1125196A (en) | 1995-05-13 | 1995-05-13 | Producing iron oxide yellow (red) by using non-scale method containing iron offscum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111044 CN1125196A (en) | 1995-05-13 | 1995-05-13 | Producing iron oxide yellow (red) by using non-scale method containing iron offscum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1125196A true CN1125196A (en) | 1996-06-26 |
Family
ID=5078362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95111044 Pending CN1125196A (en) | 1995-05-13 | 1995-05-13 | Producing iron oxide yellow (red) by using non-scale method containing iron offscum |
Country Status (1)
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|---|---|
| CN (1) | CN1125196A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863516A (en) * | 2010-05-26 | 2010-10-20 | 松阳县环境监测站 | Method for recovering ferrite containing chromium and nickel in stainless steel pickling waste water sludge |
| CN102690942A (en) * | 2012-06-18 | 2012-09-26 | 中南大学 | Method for reduction roasting and fortified acid dissolving of sulfur-containing gold concentrate calcine |
| CN106219611A (en) * | 2016-07-27 | 2016-12-14 | 升华集团德清华源颜料有限公司 | A kind of low viscosity iron oxide yellow |
| RU2655336C1 (en) * | 2017-05-23 | 2018-05-25 | Валерий Константинович Ларин | Method of obtaining iron oxide pigments |
-
1995
- 1995-05-13 CN CN 95111044 patent/CN1125196A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863516A (en) * | 2010-05-26 | 2010-10-20 | 松阳县环境监测站 | Method for recovering ferrite containing chromium and nickel in stainless steel pickling waste water sludge |
| CN101863516B (en) * | 2010-05-26 | 2013-12-11 | 松阳县环境监测站 | Method for recovering ferrite containing chromium and nickel in stainless steel pickling waste water sludge |
| CN102690942A (en) * | 2012-06-18 | 2012-09-26 | 中南大学 | Method for reduction roasting and fortified acid dissolving of sulfur-containing gold concentrate calcine |
| CN106219611A (en) * | 2016-07-27 | 2016-12-14 | 升华集团德清华源颜料有限公司 | A kind of low viscosity iron oxide yellow |
| CN106219611B (en) * | 2016-07-27 | 2017-07-11 | 升华集团德清华源颜料有限公司 | A kind of low viscosity iron oxide yellow |
| RU2655336C1 (en) * | 2017-05-23 | 2018-05-25 | Валерий Константинович Ларин | Method of obtaining iron oxide pigments |
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