CN101091842A - Sedimentation method for separating mixed ore pulp - Google Patents
Sedimentation method for separating mixed ore pulp Download PDFInfo
- Publication number
- CN101091842A CN101091842A CN 200710118663 CN200710118663A CN101091842A CN 101091842 A CN101091842 A CN 101091842A CN 200710118663 CN200710118663 CN 200710118663 CN 200710118663 A CN200710118663 A CN 200710118663A CN 101091842 A CN101091842 A CN 101091842A
- Authority
- CN
- China
- Prior art keywords
- ore pulp
- sedimentation
- mixed ore
- pulp
- red mud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004062 sedimentation Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 32
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims description 21
- 238000010790 dilution Methods 0.000 claims description 17
- 239000012895 dilution Substances 0.000 claims description 17
- 229910001648 diaspore Inorganic materials 0.000 claims description 14
- 238000013019 agitation Methods 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 125000000129 anionic group Chemical group 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 2
- 238000010348 incorporation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 239000006228 supernatant Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000004131 Bayer process Methods 0.000 abstract description 4
- 229910001679 gibbsite Inorganic materials 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005272 metallurgy Methods 0.000 abstract description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910000737 Duralumin Inorganic materials 0.000 abstract 2
- 150000001450 anions Chemical class 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- 239000004575 stone Substances 0.000 abstract 2
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 description 8
- 239000011707 mineral Substances 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000007667 floating Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 150000004684 trihydrates Chemical class 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical group [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 1
- 229910001608 iron mineral Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to a mix pulp separation by sedimentation method, involves in a the material liquid-solid separation method in the metallurgy chemical industry process, specially in the aluminum oxide production process, the Bayer process that dissolves out the pulp liquid-solid separation method, more specifically is the method that dissolves the mix pulp separation by sedimentation by the two different bauxites which is one water duralumin stone type and gibbsite type. The feature is that adds the gibbsite-bauxite into the dissolved one water duralumin stone type bauxite, through diluted, first adds polyacrylamide agents of the strong anion type and mixes to the pulp, then adds the anion different oxygen oxime group polyacrylamide agents and mixes to the pulp, and then subsides and separates. Using the invention method, the mix pulp red mud sinks fast, after separation by sedimentation, has high supernatant clarity and low undercurrent compresses L/S, can satisfy the industrial production.
Description
Technical field
A kind of sedimentation method for separating mixed ore pulp, the solid-liquid separating method that relates to material in a kind of metallurgy chemical process, particularly in the aluminum oxide production process, the bayer process ' s digested slurry solid-liquid separating method is more specifically said so about the method for two kinds of different bauxite stripping mixed ore pulps of diaspore type and gibbsite type sedimentation separation.
Background technology
Be energy savings and reduction production consumption, at present, domestic aluminium oxide enterprise updates the technology of alumina producing Bayer process, add the stripping of gibbsitic bauxite enrichment after adopting the stripping of diaspore type bauxite high pressure, be on the basis of original diaspore type bauxite high pressure dissolving-out process flow process, utilize the indirect steam of stripping flash system to carry out the stripping of gibbsitic bauxite, to obtain high Rp (Al in the sodium aluminate solution
2O
3Mass ratio with NaOH) sodium aluminate solution, thus the cycle efficieny of Bayer process improved significantly, increase output, reduce to produce consuming.In addition, after add the degree of supersaturation that ore deposit enrichment stripping can also improve solution, help the production of sandy alumina and plant the raising of branch output capacity.
On May 24th, 2006, disclosed application number was 200510134511.3 " adding stripping production method of alumina in ore deposit after a kind of diaspore type bauxite stripping " patent, on November 22nd, 2006, disclosed application number was in " batching process after leaching in alumina production " two top patents of 200510200289.2, the process conditions that add the ore deposit stripping after disclosing, referring in particular to the weight of understanding gibbsite type grinding particle size, ore pulp contains admittedly, and the stripping temperature of three water ore deposit addings etc., obtained good effect.But because the mineral composition difference in diaspore type bauxite and the gibbsitic bauxite is bigger, the iron mineral content height that exists with alumogoethite or goethite form in the bauxite trihydrate, the settling property of its dissolved mineral slurry is poor, together sedimentation separation difficulty of stripping mixed ore pulp for these two kinds of heterogeneity bauxite is bigger, the Rp that adds mixed ore pulp after the stripping of ore deposit after adding raises, the ore pulp viscosity increases, and makes the sedimentation separation of mixed ore pulp difficult more.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at above-mentioned prior art, and a kind of settling property that can effectively improve dissolved mineral slurry is provided, and the stripping mixed ore pulp that makes two kinds of heterogeneity bauxite is the method for sedimentation separation together.
The objective of the invention is to be achieved through the following technical solutions.
A kind of sedimentation method for separating mixed ore pulp, it is characterized in that its sedimentation separation process is to add the mixed ore pulp of three water-type bauxite strippings after the diaspore type bauxite stripping after dilution, the polyacrylamide flocculant that adds the reinforcing yin essence ionic mixes with ore pulp earlier, the different oxygen oximido polyacrylamide flocculant that adds anionic again mixes with ore pulp, carries out sedimentation separation then.
A kind of sedimentation method for separating mixed ore pulp of the present invention is characterized in that the stripping mixed ore pulp is to adopt an aluminum hydroxide wash liquor or a red mud wash liquor dilution.
A kind of sedimentation method for separating mixed ore pulp of the present invention is characterized in that diluting back mixed ore pulp Al
2O
3Concentration is 130g/l～200g/l.
A kind of sedimentation method for separating mixed ore pulp of the present invention, it is characterized in that mixed ore pulp dilution after, the amount of adding polyacrylamide flocculant earlier is 1/10000～1/1000 of a dried red mud weight, with the flowsheet of slurry agitation incorporation time be 10～600s; The amount of adding different oxygen oximido polyacrylamide flocculant again is 0.5/10000～1/1000 of a dried red mud weight, and the time of mixing with ore pulp is 5～300s.
Method of the present invention, to add the stripping mixed ore pulp of gibbsitic bauxite stripping mixed ore pulp after the stripping of diaspore bauxite after dilution, polyacrylamide (PAM) flocculant that adds the reinforcing yin essence ionic mixes with ore pulp earlier, different oxygen oximido polyacrylamide (HXPAM) flocculant that adds anionic again mixes with ore pulp, carries out sedimentation separation then.Method of the present invention, the supernatant clarity height after the mixed ore pulp sedimentation separation, red-mud settlement speed are fast, red mud underflow compressibility is good.Red-mud settlement speed＞5m/h, sedimentation supernatant floating material content＜400mg/l behind the 30min, industrial requirement can be satisfied in underflow compression L/S＜2.60.
The specific embodiment
A kind of sedimentation method for separating mixed ore pulp, its sedimentation separation process be two kinds of different bauxite stripping mixed ore pulps of diaspore type bauxite and gibbsitic bauxite, adopts red mud wash liquor or aluminum hydroxide wash liquor to be diluted to ore pulp Al
2O
3Concentration is 130g/l～200g/l, adds polyacrylamide flocculant by 1/10000～1/1000 of dried red mud weight earlier, mixes 10～600s with flowsheet of slurry agitation; In ore pulp, add different oxygen oximido polyacrylamide flocculant by 0.5/10000～1/1000 of dried red mud weight again, after mixing 5～300s, carry out the sedimentation separation operation.
Embodiment 1
Bauxite trihydrate enrichment dissolved mineral slurry will be added, with a red mud wash liquor dilution, Al in its solution after the diaspore type bauxite stripping
2O
3Concentration dilution is to 130g/l.Add reinforcing yin essence ionic polyacrylamide flocculant by 1/1000 of dried red mud weight earlier, mix 30s with flowsheet of slurry agitation, add the different oxygen oximido of anionic polyacrylamide flocculant by doing red mud amount 0.5/10000 again, and carry out the sedimentation separation operation after flowsheet of slurry agitation is mixed 12s.The heavy speed of its red mud is 18.5m/h, sedimentation supernatant floating material content 35mg/l behind the 30min, and underflow compression L/S is 2.43.
Embodiment 2
Bauxite trihydrate enrichment dissolved mineral slurry will be added, with aluminum hydroxide wash liquor dilution, Al in its solution after the diaspore type bauxite stripping
2O
3Concentration dilution is to 180g/l.Earlier by the 1/10000 interpolation reinforcing yin essence ionic polyacrylamide flocculant of doing red mud amount, mix 120s with flowsheet of slurry agitation, add the different oxygen oximido of anionic polyacrylamide flocculant by doing red mud amount 2/10000 again, and carry out the sedimentation separation operation after flowsheet of slurry agitation is mixed 5s.Its red mud sinks fast 9.7m/h, sedimentation supernatant floating material content 310mg/l behind the 30min, and underflow compression L/S is 2.31.
Embodiment 3
Bauxite trihydrate enrichment dissolved mineral slurry will be added, with aluminum hydroxide wash liquor dilution, Al in its solution after the diaspore type bauxite stripping
2O
3Concentration dilution is to 200g/l.Earlier by the 3/10000 interpolation reinforcing yin essence ionic polyacrylamide flocculant of doing red mud amount, mix 100s with flowsheet of slurry agitation, add the different oxygen oximido of anionic polyacrylamide flocculant by doing red mud amount 1/1000 again, and carry out the sedimentation separation operation after flowsheet of slurry agitation is mixed 200s.Its red mud sinks fast 6.5m/h, sedimentation supernatant floating material content 350mg/l behind the 30min, and underflow compression L/S is 2.53.
Embodiment 4
Bauxite trihydrate enrichment dissolved mineral slurry will be added, with a red mud wash liquor dilution, Al in its solution after the diaspore type bauxite stripping
2O
3Concentration dilution is to 165g/l.Earlier by the 4/10000 interpolation reinforcing yin essence ionic polyacrylamide flocculant of doing red mud amount, mix 240s with flowsheet of slurry agitation, add the different oxygen oximido of anionic polyacrylamide flocculant by doing red mud amount 0.5/10000 again, and carry out the sedimentation separation operation after flowsheet of slurry agitation is mixed 12s.Its red mud sinks fast 17.3m/h, sedimentation supernatant floating material content 80mg/l behind the 30min, and underflow compression L/S is 2.26.
Embodiment 5
Bauxite trihydrate enrichment dissolved mineral slurry will be added, with aluminum hydroxide wash liquor dilution, Al in its solution after the diaspore type bauxite stripping
2O
3Concentration dilution is to 172g/l.Earlier by the 1.5/10000 interpolation reinforcing yin essence ionic polyacrylamide flocculant of doing red mud amount, mix 300s with flowsheet of slurry agitation, add the different oxygen oximido of anionic polyacrylamide flocculant by doing red mud amount 5/10000 again, and carry out the sedimentation separation operation after flowsheet of slurry agitation is mixed 300s.The heavy speed of its red mud is 6.5m/h, sedimentation supernatant floating material content 106mg/l behind the 30min, and underflow compression L/S is 2.35.
Claims (4)
1. sedimentation method for separating mixed ore pulp, it is characterized in that its sedimentation separation process is to add the mixed ore pulp of three water-type bauxite strippings after the diaspore type bauxite stripping after dilution, the polyacrylamide flocculant that adds the reinforcing yin essence ionic mixes with ore pulp earlier, the different oxygen oximido polyacrylamide flocculant that adds anionic again mixes with ore pulp, carries out sedimentation separation then.
2. a kind of sedimentation method for separating mixed ore pulp according to claim 1 is characterized in that the stripping mixed ore pulp is to adopt an aluminum hydroxide wash liquor or a red mud wash liquor dilution.
3. a kind of sedimentation method for separating mixed ore pulp according to claim 1 is characterized in that diluting back mixed ore pulp Al
2O
3Concentration is 130g/l～200g/l.
4. a kind of sedimentation method for separating mixed ore pulp according to claim 1, it is characterized in that mixed ore pulp dilution after, the amount of adding polyacrylamide flocculant earlier is 1/10000～1/1000 of a dried red mud weight, with the flowsheet of slurry agitation incorporation time be 10～600s; The amount of adding different oxygen oximido polyacrylamide flocculant again is 0.5/10000～1/1000 of a dried red mud weight, and the time of mixing with ore pulp is 5～300s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710118663 CN101091842A (en) | 2007-07-12 | 2007-07-12 | Sedimentation method for separating mixed ore pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710118663 CN101091842A (en) | 2007-07-12 | 2007-07-12 | Sedimentation method for separating mixed ore pulp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101091842A true CN101091842A (en) | 2007-12-26 |
Family
ID=38990392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710118663 Pending CN101091842A (en) | 2007-07-12 | 2007-07-12 | Sedimentation method for separating mixed ore pulp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101091842A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103717533A (en) * | 2011-08-08 | 2014-04-09 | 巴斯夫欧洲公司 | Method for producing ultrapure aluminum oxide by cleaning clay |
| CN105251247A (en) * | 2015-10-28 | 2016-01-20 | 柳州华锡铟锡材料有限公司 | Method for fast sedimentating stanniferous fine silt slurry solid particles in sodium stannate production process |
-
2007
- 2007-07-12 CN CN 200710118663 patent/CN101091842A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103717533A (en) * | 2011-08-08 | 2014-04-09 | 巴斯夫欧洲公司 | Method for producing ultrapure aluminum oxide by cleaning clay |
| CN105251247A (en) * | 2015-10-28 | 2016-01-20 | 柳州华锡铟锡材料有限公司 | Method for fast sedimentating stanniferous fine silt slurry solid particles in sodium stannate production process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2014392419B2 (en) | Method for recycling alkali and aluminum during treatment of Bayer red mud by using calcification-carbonization process | |
| CN103588235B (en) | Method for producing polyaluminium sulfate by using red mud slag | |
| CN100441708C (en) | Stripping method for diasporite type bauxite | |
| CN101875129B (en) | Method for comprehensive utilization of high-iron bauxite | |
| CA2359235A1 (en) | Rheology modification of settled solids in mineral processing | |
| CN102489406A (en) | Method for treating sulfur bauxite | |
| CN101070172A (en) | Improved series method for producing aluminium oxide | |
| CN101289211A (en) | Method for recovering sodium oxide and aluminum oxide from red mud by bayer process | |
| CN102826577A (en) | Two-stage digestion process of boehmite-gibbsite hybrid bauxite | |
| CN1191992C (en) | Process for purifying bayer process streams | |
| CN104962739A (en) | Quick impurity removing method for rare earth leach liquor of weathering crust elution-deposited rare earth ores | |
| CN110055365A (en) | A kind of method that calcification-carbonization iron red mud recycles iron and tailings cement | |
| CN107502313A (en) | Spacetabs type fluid loss agent and preparation method and application are used in a kind of seawater well cementation | |
| CN112551658A (en) | High-alumina fly ash defluorination flocculant and preparation method and application thereof | |
| CN107188209A (en) | The method that the hot method of the step alkali of andradite one handles middle-low bauxite production metallurgy grade aluminum oxide | |
| CN101091842A (en) | Sedimentation method for separating mixed ore pulp | |
| CN104525384A (en) | Preparation method of inhibitor of limonite | |
| CN102417980B (en) | Method for producing nickel sulfate by leaching Lateritic nickle ores with both sulfuric acid and ammonia | |
| CN110237937A (en) | A kind of test method for realizing magnesite single step Counterfloatating desiliconization decalcification | |
| CN101289212A (en) | Stripping process for high iron diaspore bauxite | |
| CN103771546B (en) | Process for continuously producing nickel hydroxide by using pickle liquor of nickel laterite ore | |
| CN104073651A (en) | Method for extracting aluminum and iron from high iron gibbsite-type bauxite | |
| CN102398913B (en) | Process for extracting metallurgical grade alumina through treatment of high alumina fly ash by using sulfuric acid method | |
| CN108910923A (en) | A kind of method of alumina producing Bayer process | |
| CN105642449B (en) | A kind of method that tungsten mine water cycle and collecting agent recycle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20071226 |