CN101708482A - New technology for processing iron tailings - Google Patents
New technology for processing iron tailings Download PDFInfo
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- CN101708482A CN101708482A CN200810229230A CN200810229230A CN101708482A CN 101708482 A CN101708482 A CN 101708482A CN 200810229230 A CN200810229230 A CN 200810229230A CN 200810229230 A CN200810229230 A CN 200810229230A CN 101708482 A CN101708482 A CN 101708482A
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Abstract
The invention relates to the technical field of iron tailings processing, in particular to a technology for processing iron tailings, and two sections of classification technology and an efficient concentration technology are adopted. The technology comprises the following steps: feeding iron tailings pulp to a first section classifier and feeding oversize products into a second section classifier, wherein, the oversize products on the second section classifier are coarse fraction products; feeding the overflow of the first section classifier and the second section classifier into an efficient concentrator together with efficient coagulant; feeding the overflow water in the efficient concentrator into a recycling water pipeline; and feeding the paste tailings to a tailing reservoir for storing. The content of 200 meshes of particles contained in the iron tailings can reach over 25% by weight percent; the concentration of the paste tailings reaches over 70%; and the efficient coagulant is polyacrylamide. The technology of the invention has the beneficial effects of saving water to a largest extent, lowering energy consumption, reducing land occupation, and reducing the influence to the environment; the existing tailing reservoir is converted into paste tailings stack, thus prolonging the service life, and being beneficial to reclaimation after the tailing reservoir is closed.
Description
Technical field
The present invention relates to the iron tailings processing technology field, the technology that particularly a kind of iron tailings is handled.
Background technology
In China, as the iron ore of steel and iron industry primary raw material, the overwhelming majority is to need the lean ore that just can enter smelting procedure after the enrichment through sorting, and when producing the finished iron concentrate, has also produced a large amount of solid waste---iron tailings.At present China's metal mine tailing heap storage has reached 5,000,000,000 tons, and annual speed increment with 2～300,000,000 tons, because utilization rate is low, need take a large amount of soils, annual about 10～1,500,000,000 yuan of stacking expense.In addition, the concentrated and long distance of mine tailing is carried and need be expended a large amount of energy.The iron tailings transportation concentration adopts to be pumped to the storage of mine tailing storehouse generally below 50% at present.Contain a large amount of fine grain particles in the mine tailing that forms in ore dressing production production process, the efficient concentrated high concentration pipe transportation technology that reaches has possessed mature technique.
Summary of the invention
The new technology that the purpose of this invention is to provide a kind of iron tailings processing, purpose are to solve present iron tailings storage needs a large amount of the occupation of land, and the concentrated and length distance of iron tailings is carried the problem that need expend a large amount of energy, realizes economizing the land resource and the energy.
The objective of the invention is to realize by following technical proposals.
The new technology that iron tailings of the present invention is handled is characterized in that adopting two sections grading technologies and efficient concentration technology, comprises the steps:
1) the iron tailings ore pulp is sent into one section grader,
2) oversize of one section grader is sent into two sections graders,
3) oversize of two sections graders is the coarse fraction product,
4) the overflow merging of one section grader and two sections graders is sent into high-efficiency concentrator together with efficient flocculant,
5) overflow water of high-efficiency concentrator is sent into recycling water lines, and the lotion mine tailing of high-efficiency concentrator is delivered to the mine tailing storehouse and stored.
Contain-200 purpose granule contents in the described iron tailings and should reach percentage by weight more than 25%.
The concentration of described lotion mine tailing reaches the solids content percentage by weight more than 70%.
Described efficient flocculant is a polyacrylamide.
The lotion mine tailing of described high-efficiency concentrator is delivered to the mine tailing storehouse by pump and pipeline and is stored.
The new technology that iron tailings of the present invention is handled is carried out pre-classification with the iron tailings slurry and is handled, and the coarse fraction product is used for building sand, fine fraction product after efficient concentrating, and concentration reaches 70% or more formation lotion mine tailing and delivers to the stacking of mine tailing storehouse.
The beneficial effect of the new technology that iron tailings of the present invention is handled is:
1) conserves water to greatest extent, reduce energy consumption;
2) reduce land seizure;
3) minimizing is to the influence of environment;
4) will have the mine tailing storehouse now is converted to lotion tailing heap exoergic and prolongs its service life;
5) reclaiming after helping the mine tailing storehouse and closing.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
The specific embodiment
Below in conjunction with embodiment explanation the specific embodiment of the present invention shown in the drawings.
As shown in Figure 1, the new technology that iron tailings of the present invention is handled is characterized in that adopting two sections grading technologies and efficient concentration technology, comprises the steps:
1) iron tailings ore pulp 1 is sent into one section grader 2,
2) oversize of one section grader 2 is sent into two sections graders 3,
3) oversize of two sections graders 3 is a coarse fraction product 6,
4) the overflow merging of one section grader 2 and two sections graders 3 is sent into high-efficiency concentrator 5 together with efficient flocculant 4,
5) overflow water 7 of high-efficiency concentrator 5 is sent into recycling water lines, and the lotion mine tailing 8 of high-efficiency concentrator 5 is delivered to the mine tailing storehouse and stored.
Contain-200 purpose granule contents in the described iron tailings ore pulp 1 and should reach percentage by weight more than 25%.
The concentration of described lotion mine tailing 8 reaches the solids content percentage by weight more than 70%.
Described efficient flocculant 4 is a polyacrylamide.
The lotion mine tailing 8 of described high-efficiency concentrator 5 is delivered to the mine tailing storehouse by pump and pipeline and is stored.
Two sections graded operations in the process chart of the present invention can suitably be chosen according to mine tailing granularmetric composition, this technology can be used in technology of producing at present or newly-built technology, the iron tailings slurry is carried out pre-classification to be handled, the coarse fraction product is used for building sand, fine fraction product after efficient concentrating, and concentration reaches and forms the lotion mine tailing 70% or more and deliver to the stacking of mine tailing storehouse.
Claims (5)
1. the new technology that iron tailings is handled is characterized in that adopting two sections grading technologies and efficient concentration technology, comprises the steps:
1) the iron tailings ore pulp is sent into one section grader,
2) oversize of one section grader is sent into two sections graders,
3) oversize of two sections graders is the coarse fraction product,
4) the overflow merging of one section grader and two sections graders is sent into high-efficiency concentrator together with efficient flocculant,
5) overflow water of high-efficiency concentrator is sent into recycling water lines, and the lotion mine tailing of high-efficiency concentrator is delivered to the mine tailing storehouse and stored.
2. the new technology that iron tailings according to claim 1 is handled is characterized in that containing in the described iron tailings ore pulp-200 purpose granule contents and reaches percentage by weight more than 25%.
3. the new technology that iron tailings according to claim 1 is handled is characterized in that the concentration of described lotion mine tailing reaches the solids content percentage by weight more than 70%.
4. the new technology that iron tailings according to claim 1 is handled is characterized in that described efficient flocculant is a polyacrylamide.
5. the new technology that iron tailings according to claim 1 is handled is characterized in that the lotion mine tailing of described high-efficiency concentrator is delivered to the storage of mine tailing storehouse by pump and pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810229230A CN101708482A (en) | 2008-12-03 | 2008-12-03 | New technology for processing iron tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810229230A CN101708482A (en) | 2008-12-03 | 2008-12-03 | New technology for processing iron tailings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101708482A true CN101708482A (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810229230A Pending CN101708482A (en) | 2008-12-03 | 2008-12-03 | New technology for processing iron tailings |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912865A (en) * | 2010-08-02 | 2010-12-15 | 河海大学 | Method for solidifying and dry-stacking mill tailings without tailing reservoir |
| CN103143435A (en) * | 2013-02-19 | 2013-06-12 | 蔡宏武 | Complete set of electricity and water-saving water supply and drainage unit suitable for concentration plant |
| CN103272686A (en) * | 2013-06-20 | 2013-09-04 | 鞍钢集团矿业公司 | Conveying technology for iron tailing paste |
| CN103301933A (en) * | 2013-06-26 | 2013-09-18 | 南京梅山冶金发展有限公司 | Comprehensive tailing utilizing technology |
| CN103977883A (en) * | 2014-04-28 | 2014-08-13 | 武汉钢铁(集团)公司 | Dry pile method suitable for rainy humid area tailings |
| CN107486329A (en) * | 2017-08-22 | 2017-12-19 | 首钢集团有限公司 | A kind of method and system handled mine tailing material |
| CN109550588A (en) * | 2018-10-26 | 2019-04-02 | 山东黄金集团烟台设计研究工程有限公司 | A kind of ore-dressing technique improving ore beneficiation grind grading efficiency and sorting index |
-
2008
- 2008-12-03 CN CN200810229230A patent/CN101708482A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912865A (en) * | 2010-08-02 | 2010-12-15 | 河海大学 | Method for solidifying and dry-stacking mill tailings without tailing reservoir |
| CN101912865B (en) * | 2010-08-02 | 2012-11-07 | 河海大学 | Method for solidifying and dry-stacking mill tailings without tailing reservoir |
| CN103143435A (en) * | 2013-02-19 | 2013-06-12 | 蔡宏武 | Complete set of electricity and water-saving water supply and drainage unit suitable for concentration plant |
| CN103143435B (en) * | 2013-02-19 | 2014-09-10 | 蔡宏武 | Complete set of electricity and water-saving water supply and drainage unit suitable for concentration plant |
| CN103272686A (en) * | 2013-06-20 | 2013-09-04 | 鞍钢集团矿业公司 | Conveying technology for iron tailing paste |
| CN103301933A (en) * | 2013-06-26 | 2013-09-18 | 南京梅山冶金发展有限公司 | Comprehensive tailing utilizing technology |
| CN103301933B (en) * | 2013-06-26 | 2015-06-03 | 南京梅山冶金发展有限公司 | Comprehensive tailing utilizing technology |
| CN103977883A (en) * | 2014-04-28 | 2014-08-13 | 武汉钢铁(集团)公司 | Dry pile method suitable for rainy humid area tailings |
| CN107486329A (en) * | 2017-08-22 | 2017-12-19 | 首钢集团有限公司 | A kind of method and system handled mine tailing material |
| CN109550588A (en) * | 2018-10-26 | 2019-04-02 | 山东黄金集团烟台设计研究工程有限公司 | A kind of ore-dressing technique improving ore beneficiation grind grading efficiency and sorting index |
| CN109550588B (en) * | 2018-10-26 | 2020-10-23 | 山东黄金集团烟台设计研究工程有限公司 | Mineral processing technology for improving mineral processing, grinding and grading efficiency and grading index of ore |
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Open date: 20100519 |