CN101555988B - Method for preventing ore pulp scarring during long-distance delivery - Google Patents
Method for preventing ore pulp scarring during long-distance delivery Download PDFInfo
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- CN101555988B CN101555988B CN 200810068703 CN200810068703A CN101555988B CN 101555988 B CN101555988 B CN 101555988B CN 200810068703 CN200810068703 CN 200810068703 CN 200810068703 A CN200810068703 A CN 200810068703A CN 101555988 B CN101555988 B CN 101555988B
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- ore pulp
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000037390 scarring Effects 0.000 title claims abstract description 9
- 239000003513 alkali Substances 0.000 claims description 18
- 229910001570 bauxite Inorganic materials 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000003518 caustics Substances 0.000 claims description 6
- 238000002716 delivery method Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 17
- 206010039509 Scab Diseases 0.000 description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for preventing ore pulp scarring during long-distance delivery. Firstly, alumyte is ground and blended with lye into 40-60 percent of high-alkalinity ore pulp by weight ratio in a mine, and finally, the high-alkalinity ore pulp is delivered by a pipeline in a long-distance way. The invention adopts a high-concentration above-critical (particles are not subsided on a pipe wall) delivery method and also scientifically controls the concentration of the delivered high-alkalinity ore pulp inside the pipeline, thereby effectively preventing the high-alkalinity ore pulp inside the pipeline scarring when being delivered; in addition, the invention reduces the energy source consumption and saves the production cost, and the delivering distance can reach more than 100 kilometers.
Description
Technical field
The present invention relates to a kind of method of scabbing that prevents, is the method for preventing ore pulp scarring during long-distance delivery specifically.
Background technique
In process for making alumina mainly take bauxite as raw material, and generally, the distance of mine and alumina producing factory is all distant, tens kilometers kilometers even up to a hundred, just need to Ore Transportation be processed ore after alumina factory again with vehicle, this method not only wastes time and energy, and has improved cost of production, the long distance of ore slurry pipeline therefore just occurred and has carried.; at present ore pulp used is also to carry with pipeline alkali lye in alumina producing factory; and the pipeline ore pulp of use transportation at this moment is all (20% left and right), the low speed (1.5m left and right usually) of short distance (substantially all within hundred meters), low density; often the problem of scabbing can appear; at this moment just pipeline need to be excavated water and rinse, removing scabs.When but ore pulp long-distance was carried, it was all very difficult scabbing with removing in the position of determining to scab, and therefore how solving scabbing in the ore pulp long-distance conveying is exactly the current problem that faces.The method of continuing to use present short distance conveying is obviously not all right.
Summary of the invention
In ore pulp, alkali lye prevents that with bauxite allotment ratio and transporting velocity ore pulp from occurring scabbing to technical problem to be solved by this invention when the pipeline middle and long distance is carried by improving exactly.
In order to address the above problem, the invention provides and prevent the method that scabs when a kind of ore pulp long-distance is carried, first in the mine, bauxite being become weight ratio with alkali liquor preparing is the high-alkalinity ore pulp of 40:60 to 60:40, carries with pipe long-distance at last.
Bauxite becomes weight ratio with alkali liquor preparing be 46:54 to 50:50, most preferably 46:54.
Alkali lye is comprised of high caustic alkali and high-carbon soda acid; Press Na
2O concentration is calculated, and the concentration of high caustic alkali is 240～280g/L; The concentration of high-carbon soda acid is 25～50g/L.
High-alkalinity ore pulp is carried with the long distance of the flow velocity of 1.7～2.5m/s in pipeline, and the flow velocity of preferred ore pulp is 1.8～2.0m/s.
Compared with prior art, the present invention has adopted high concentration, overcritical (referring to not sedimentation of particle tube wall) delivery method, simultaneously the concentration of transfer ore pulp in the pipeline science of carrying out is controlled, the problem that scabs that has occurred when effectively having prevented pulp conveying in the pipeline, and reduced energy consumption, saved cost of production, fed distance can reach more than 100 kilometers.
In pipeline, the transporting velocity of ore pulp more large more being difficult for scabs, but the larger wearing and tearing to conveyance conduit of transporting velocity are larger, also will consider the working life of pipeline simultaneously in order effectively to prevent from scabbing, and determines the preferred 1.8～2.0m/s of flow velocity of ore pulp.
Embodiment
Embodiment 1: alkali lye is by high caustic alkali (NaOH) and high-carbon soda acid (NaCO
3) form; In alkali lye, the concentration of high caustic alkali is with Na
2O concentration is calculated as 250～260g/L; The concentration of high-carbon soda acid is with Na
2O concentration is calculated as 30～40g/L; First bauxite is mixed with alkali lye in the mine, be made into that weight ratio bauxite accounts for 46%, alkali lye accounts for 54% high-alkalinity ore pulp, then carries with pipe long-distance; And high-alkalinity ore pulp is carried with the long distance of the flow velocity of 1.8～2.0m/s in pipeline.
Claims (4)
1. method for preventing ore pulp scarring during long-distance delivery, it is characterized in that: first bauxite being become weight ratio with alkali liquor preparing is the high-alkalinity ore pulp of 40:60 to 60:40, then carries with pipe long-distance; Alkali lye is comprised of high caustic alkali and high-carbon soda acid; Press Na
2O concentration is calculated, and the concentration of high caustic alkali is 240～280g/L; The concentration of high-carbon soda acid is 25～50g/L.
2. method for preventing ore pulp scarring during long-distance delivery according to claim 1, it is characterized in that: bauxite becomes weight ratio with alkali liquor preparing be 46:54 to 50:50.
3. method for preventing ore pulp scarring during long-distance delivery according to claim 1 is characterized in that: high-alkalinity ore pulp is carried with the long distance of the flow velocity of 1.7～2.5m/s in pipeline.
4. method for preventing ore pulp scarring during long-distance delivery according to claim 3, it is characterized in that: the flow velocity of ore pulp is 1.8～2.0m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810068703 CN101555988B (en) | 2008-04-10 | 2008-04-10 | Method for preventing ore pulp scarring during long-distance delivery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810068703 CN101555988B (en) | 2008-04-10 | 2008-04-10 | Method for preventing ore pulp scarring during long-distance delivery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101555988A CN101555988A (en) | 2009-10-14 |
| CN101555988B true CN101555988B (en) | 2013-06-12 |
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ID=41174208
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810068703 Active CN101555988B (en) | 2008-04-10 | 2008-04-10 | Method for preventing ore pulp scarring during long-distance delivery |
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| CN (1) | CN101555988B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900248A (en) * | 2009-11-05 | 2010-12-01 | 中国恩菲工程技术有限公司 | Long-distance pipeline transportation process of lateritic nickel ores |
| CN102518944A (en) * | 2011-12-15 | 2012-06-27 | 攀钢集团工程技术有限公司 | Raw ore transporting method |
| CN102518943A (en) * | 2011-12-15 | 2012-06-27 | 攀钢集团工程技术有限公司 | Pipeline transportation process for raw ore pulp |
| CN103939743B (en) * | 2014-04-21 | 2016-10-05 | 云南大红山管道有限公司 | The Slurry Pipeline Transportation system of a kind of low abrasion and carrying method |
| CN112482313B (en) * | 2020-11-17 | 2022-07-22 | 太原钢铁(集团)有限公司 | Long-distance high-concentration tailing discharge process for damming by tailing center line method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5706866A (en) * | 1993-02-18 | 1998-01-13 | Pont-A-Mousson S.A. | Pipe member for buried conduit with corrosion protection and process therefor |
| CN1405090A (en) * | 2002-11-12 | 2003-03-26 | 中国铝业股份有限公司 | Bayer production method for aluminium oxide |
| CN1730363A (en) * | 2005-08-23 | 2006-02-08 | 贵阳铝镁设计研究院 | Beauxite applied pipeline transportation method |
-
2008
- 2008-04-10 CN CN 200810068703 patent/CN101555988B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5706866A (en) * | 1993-02-18 | 1998-01-13 | Pont-A-Mousson S.A. | Pipe member for buried conduit with corrosion protection and process therefor |
| CN1405090A (en) * | 2002-11-12 | 2003-03-26 | 中国铝业股份有限公司 | Bayer production method for aluminium oxide |
| CN1730363A (en) * | 2005-08-23 | 2006-02-08 | 贵阳铝镁设计研究院 | Beauxite applied pipeline transportation method |
Non-Patent Citations (2)
| Title |
|---|
| 吴湘福.矿浆管道输送技术的发展与展望.《金属矿山》.2000,(第6期),1-7. * |
| 李小斌等.拜耳法管道化溶出系统的能量分析.《矿冶工程》.2005,第25卷(第5期),42-46. * |
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| CN101555988A (en) | 2009-10-14 |
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