CN1785529A - Technological method of iron removal of nepheline ore by strong magnetic concentration - Google Patents
Technological method of iron removal of nepheline ore by strong magnetic concentration Download PDFInfo
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- CN1785529A CN1785529A CN 200510022343 CN200510022343A CN1785529A CN 1785529 A CN1785529 A CN 1785529A CN 200510022343 CN200510022343 CN 200510022343 CN 200510022343 A CN200510022343 A CN 200510022343A CN 1785529 A CN1785529 A CN 1785529A
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Abstract
A process for removing iron from nepheline ore includes such steps as crushing nepheline ore grinding, sieving to divide the ore powder into (30-100)-mesh class and (80-200)-mesh class, strong magnetic wet separation for (30-100)-mesh class, strong magnetic dry separation for (80-200)-mesh class, and packing. Its recovery rate of ore concentrate is increased to more than 70%.
Description
Technical field
The invention belongs to the ore processing and treating method, particularly a kind of process of the nepheline ore deposit being carried out the high intensity magnetic separation deironing.
Background technology
The nepheline ore deposit is a kind of emerging nonmetallic mineral, has only Canada and the large-scale production of Norway two countries at present in the world, and a year volume of production and marketing reaches 800,000 tons, only supplies the raw material of American-European developed country as glass, pottery and Chemical Manufacture.China has also found the nepheline ore resources on Sichuan Nan Jiang, Geju City, Yunnan and other places, the key technology of nepheline mineral products production is reasonable classification of semi-finished product and high intensity magnetic separation deironing, to drop to iron-holder in the raw ore 〉=2% in iron-holder≤0.2%, granularity could adapt to big industrial standards such as glass, pottery at 200 orders～30 orders (promptly more than or equal to 200 orders smaller or equal to 30 orders).Mostly the external at present nepheline ore deposit that produces is to adopt the multistage high intensity magnetic separation deironing of dry method, and only about 50%, the mineral resources utilization rate is low for the general concentrate rate of recovery, and the wasting of resources is big, has correspondingly also increased environmental protection pressure.
Summary of the invention
The objective of the invention is in order to solve under the prerequisite that reaches above-mentioned big industrial production standard, improve the problem of the concentrate rate of recovery in nepheline ore deposit, provide a kind of the employing that the nepheline dressing sieve classification behind the ore grinding is suitable for dry method, the deironing of wet method high intensity magnetic separation, the concentrate rate of recovery can reach more than 70%, reduces the iron removal of nepheline ore by strong magnetic concentration process of the wasting of resources.
The objective of the invention is to realize by following technical proposals:
The process of iron removal of nepheline ore by strong magnetic concentration, comprise fragmentation, ore grinding, screening, high intensity magnetic separation iron removal step, it is characterized in that: the screening operation be nepheline breeze after ore grinding is finished to sieve into granularity be 100 orders～30 orders (be granularity more than or equal to 100 orders smaller or equal to the nepheline breeze between 30 orders) and 200 orders～80 orders (be granularity more than or equal to 200 orders less than the nepheline breeze between 80 orders) two groups, be that granularity is carried out the deironing of dry method high intensity magnetic separation at 100 orders～30 purpose nepheline breezes employing intensity magnetic separator in the high intensity magnetic separation iron removal step; Adopt Wet-type strong magnetic separator to carry out the wet high-intensity magnetic separation deironing to granularity at 200 orders～80 purpose nepheline breezes.
Also has the dewatered drying operation after the above-mentioned wet method high intensity magnetic separation deironing.
The beneficial effects of the utility model are, nepheline breeze behind the ore grinding is carried out sieve classification to be helped adopting different high intensity magnetic separation method for removing iron at varigrained nepheline breeze, improve the high intensity magnetic separation method for removing iron to varigrained applicability, and then improve the rate of recovery of concentrate; Adopt the wet high-intensity magnetic separation method for removing iron for the nepheline breeze of granularity between 200 orders～80 orders, can avoid the shortcoming of the nepheline breeze of dry method intensity magnetic separator in can not blanking particle size range like this, reduce the loss of dry method high intensity magnetic separation method for removing iron, improve the concentrate rate of recovery.
Description of drawings
Fig. 1 is a process flow chart of the present invention
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and embodiments.
Embodiment: as shown in Figure 1, the process of iron removal of nepheline ore by strong magnetic concentration disclosed by the invention comprises fragmentation, ore grinding, screening operation, carry out deironing of dry method high intensity magnetic separation and wet high-intensity magnetic separation deironing according to the varigrained nepheline breeze that sieves out then, direct packaging product after the dry method high intensity magnetic separation iron removal step, also have dewatered drying operation, packaging product then behind the wet high-intensity magnetic separation iron removal step.The size of raw ore is at 300 * 300mm, adopt jaw crusher that it is broken for ore less than 25mm, the rod mill that enters 1.5m * 3m then is through Grinding procedure powder process, these breezes sieve into 100 orders～30 orders and 200 orders～two groups of different ranks of 80 orders by the disk vibration sieve according to the difference of granularity, and granularity enters the dry method intensity magnetic separator at 100 orders～30 purpose breezes and carries out the deironing of dry method high intensity magnetic separation; Granularity enters Wet-type strong magnetic separator at 200 orders～80 purpose breezes and carries out the wet high-intensity magnetic separation deironing, uses the rotary drum dryer of φ 1.4m * 14m that the breeze through the wet high-intensity magnetic separation deironing is carried out dewatered drying then, makes its water content less than 1%.
The said equipment type selecting and the technological process of production of making the operation of formation automatic streamline, wherein, the fine ore of dry method high intensity magnetic separation iron removal step production is about 30% by weight the productive rate of relative raw ore, be 1 ton as raw ore promptly, the finished product fine ore of producing through dry method high intensity magnetic separation iron removal step is about 300 kilograms; The fine ore of process wet high-intensity magnetic separation iron removal step production is about 40% by weight the productive rate of relative raw ore, it is 1 ton promptly as raw ore, finished product fine ore through the production of wet high-intensity magnetic separation iron removal step is about 400 kilograms, thus, after 1 ton of process sieve classification disclosed by the invention of raw ore, dried wet two method high intensity magnetic separation iron removal steps processing are handled, the precision productive rate or the rate of recovery reach more than 70%, and its iron-holder is less than or equal to 0.2%, water content meets the big industrial needs of industries such as glass, pottery less than 1%.
The present invention sieves packet classification to the nepheline breeze innovatively, can not magnetic separation remove the granularity of iron recycles at 200 orders～80 purpose breezes for original because dry method intensity magnetic separator, add the wet high-intensity magnetic separation iron removal step, effectively improving the rate of recovery or productive rate reaches more than 40 percentage points, improved the utilization rate of mineral products greatly, reduce the wasting of resources, correspondingly also improved environmental benefit.
Claims (2)
1, the process of iron removal of nepheline ore by strong magnetic concentration, comprise fragmentation, ore grinding, screening, high intensity magnetic separation iron removal step, it is characterized in that: the screening operation be nepheline breeze after ore grinding is finished to sieve into granularity be two groups in 100 orders～30 orders and 200 orders～80 purposes, be that granularity is carried out the deironing of dry method high intensity magnetic separation at 100 orders～30 purpose nepheline breezes in the high intensity magnetic separation iron removal step; Granularity is carried out the wet high-intensity magnetic separation deironing at 200 orders～80 purpose nepheline breezes.
2, the process of iron removal of nepheline ore by strong magnetic concentration as claimed in claim 1 is characterized in that: also have the dewatered drying operation after the wet high-intensity magnetic separation deironing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100223439A CN100560214C (en) | 2005-12-21 | 2005-12-21 | The process of iron removal of nepheline ore by strong magnetic concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100223439A CN100560214C (en) | 2005-12-21 | 2005-12-21 | The process of iron removal of nepheline ore by strong magnetic concentration |
Publications (2)
| Publication Number | Publication Date |
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| CN1785529A true CN1785529A (en) | 2006-06-14 |
| CN100560214C CN100560214C (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100223439A Expired - Fee Related CN100560214C (en) | 2005-12-21 | 2005-12-21 | The process of iron removal of nepheline ore by strong magnetic concentration |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101869871A (en) * | 2010-05-29 | 2010-10-27 | 大冶有色金属公司 | Beneficiation method for iron removing and impurity reducing combined process of feldspar ore |
| CN101352697B (en) * | 2007-07-25 | 2010-12-01 | 张颖智 | Novel ore dressing technique of weak magnetic iron ore and novel special strong magnetic dry separator thereof |
| CN102744144A (en) * | 2012-05-29 | 2012-10-24 | 邢台兴国蓝晶石制造有限公司 | Beneficiation method for preparing kyanite ores |
| CN103120984A (en) * | 2011-11-19 | 2013-05-29 | 赵中林 | Method of iron concentrate powder magnetic separation in dry mode |
| CN105381865A (en) * | 2015-11-26 | 2016-03-09 | 四川南江新兴矿业有限公司 | Method for removing calcium oxide of nepheline ores through strong magnetic separation |
-
2005
- 2005-12-21 CN CNB2005100223439A patent/CN100560214C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352697B (en) * | 2007-07-25 | 2010-12-01 | 张颖智 | Novel ore dressing technique of weak magnetic iron ore and novel special strong magnetic dry separator thereof |
| CN101869871A (en) * | 2010-05-29 | 2010-10-27 | 大冶有色金属公司 | Beneficiation method for iron removing and impurity reducing combined process of feldspar ore |
| CN101869871B (en) * | 2010-05-29 | 2011-11-16 | 大冶有色设计研究院有限公司 | Beneficiation method for iron removing and impurity reducing combined process of feldspar ore |
| CN103120984A (en) * | 2011-11-19 | 2013-05-29 | 赵中林 | Method of iron concentrate powder magnetic separation in dry mode |
| CN102744144A (en) * | 2012-05-29 | 2012-10-24 | 邢台兴国蓝晶石制造有限公司 | Beneficiation method for preparing kyanite ores |
| CN105381865A (en) * | 2015-11-26 | 2016-03-09 | 四川南江新兴矿业有限公司 | Method for removing calcium oxide of nepheline ores through strong magnetic separation |
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| Publication number | Publication date |
|---|---|
| CN100560214C (en) | 2009-11-18 |
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Owner name: SICHUAN NANJIANG XINXING MINING INDUSTRY CO., LTD. Free format text: FORMER OWNER: NANJIANG MINERALS DEVELOPMENT CO. LTD., SICHUAN PROV. Effective date: 20150114 |
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Effective date of registration: 20150114 Address after: Bazhong City, Sichuan province Nanjiang town 636600 Nanjiang Guangwu Hill Road No. 458 Red Star Patentee after: SICHUAN NANJIANG XINXING MINE INDUSTRY CO., LTD. Address before: 636600 Sichuan province Nanjiang Town Lin Xiangjiaba Patentee before: Nanjiang Minerals Development Co. Ltd., Sichuan Prov. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20181221 |