CN102921638A - Method for pretreating lean hematite and discarding tailings thereof by utilizing X-ray separators - Google Patents
Method for pretreating lean hematite and discarding tailings thereof by utilizing X-ray separators Download PDFInfo
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- CN102921638A CN102921638A CN2012104617406A CN201210461740A CN102921638A CN 102921638 A CN102921638 A CN 102921638A CN 2012104617406 A CN2012104617406 A CN 2012104617406A CN 201210461740 A CN201210461740 A CN 201210461740A CN 102921638 A CN102921638 A CN 102921638A
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Abstract
The invention relates to a method for pretreating lean hematite and discarding tailings thereof by utilizing X-ray separators. The method comprises the following steps: the raw lean hematite is roughly crushed and intermediately crushed; crushed products are primarily screened; oversize products of the primary screening operation are fed into an X-ray separator I, so that pretreatment separation operation of the lean hematite is completed via the X-ray separator I, and waste rock is pre-separated out to be discarded in advance; undersize products of the primary screening operation is fed to be secondarily screened; oversize products of the secondary screening operation is sent into an X-ray separator II, so that pretreatment separation operation of the lean hematite is completed and waste rock is pre-separated out to be discarded in advance; undersize products of the secondary screening operation are fed into the next hematite grinding operation as powdered hematite; products obtained after the waste rock separated by the X-ray separator I and the X-ray separator II are discarded are merged, are fed into a fine crusher to be crushed, and then return the secondary screening operation to form a closed loop. Through the adoption of the method disclosed by the invention, the grade of the hematite can reach above 25 percent after the waste rock are discarded in advance, and the waste rock discarding yield is above 60 percent.
Description
Technical field
The present invention relates to a kind of method that tail is thrown in the lean hematite preliminary treatment, particularly relate to a kind of X of utilization sorting machine by rays radiation is thrown tail to the lean hematite preliminary treatment method.
Background technology
Lean hematite ore enters that pre-selecting before grinding throws that tail is that the ore dressing plant is energy-conservation, the effective way of consumption reduction, synergy.At present, ripe about the coarse granule level Preconcentration Technology of ferromagnetism iron mineral, and general
All over promoting the use of.And the coarse granule preliminary election of the weak magnetic minerals such as bloodstone there is no successful experience, more without efficient pre-selection device.Adopt gravity separation technology such as jigging machine, dense media vibratory sluice to carry out preliminary election, because complex process, water consumption is large, and the efficiency of separation is low, is difficult for applying.Therefore lean hematite scarcely directly enters ore grinding and sorting operation through preliminary election at present, has consumed a large amount of energy.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art, provide a kind of and can abandon in advance a large amount of low-grade barren rocks, improve head grade, minimizing enters to grind barren rock, reduces the X sorting machine by rays radiation that utilizes of beneficiation cost and the lean hematite preliminary treatment is thrown the method for tail.For achieving the above object, the present invention is achieved through the following technical solutions:
According to the method for utilizing the X ray separator that tail is thrown in the lean hematite preliminary treatment of the present invention, it is characterized in that may further comprise the steps:
(a) the lean hematite raw ore is carried out one section coarse crushing, then carry out middle fragmentation, crushed product carries out screening operation one time;
(b) oversize of the screening operation of its granularity more than 50mm feeds and sends into X sorting machine by rays radiation I, finish lean hematite preliminary treatment sorting operation through X sorting machine by rays radiation I and select in advance barren rock and throw in advance tail, the undersize of the granularity 0～50mm of a screening operation feeds the regrading operation;
(c) its granularity is sent into X sorting machine by rays radiation II at the oversize of the regrading operation of 12～50mm, finishes lean hematite preliminary treatment sorting operation and selects in advance barren rock and throw in advance tail; The undersize of 0～12mm feeds lower road grinding operation as fine ore;
(d) X sorting machine by rays radiation I and X sorting machine by rays radiation II barren rock are thrown product behind the tail and are merged and feed the thin broken machine and return the regrading operation form closed circuit after fragmentation.
Lean hematite has been rich in Determination of multiple metal elements, whether exists by measuring the lean hematite characteristic X-ray, whether just can determine the existence of respective element, and the power of characteristic X-ray spectrum, then represent this element how much.By measuring the strong and weak of characteristic X-ray spectrum and comparing with setting value, form and control the signal enabling actuating unit, thereby realize the sorting of ore.
Compared with prior art, advantage of the present invention is:
The present invention is owing to adopt two sections coarse crushings and middle fragmentation, add twice screening operation and sorting by two sections X sorting machine by rays radiations, can abandon in advance a large amount of low-grade mine tailings, thereby raising head grade, reduce and enter to grind barren rock, reduce the disposal cost of lower procedure, can improve significantly the ore dressing plant overall economic efficiency.
Description of drawings
Fig. 1 is process chart of the present invention.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the method for utilizing the X ray separator that tail is thrown in the lean hematite preliminary treatment of the present invention is characterized in that may further comprise the steps:
(a) the lean hematite raw ore is carried out one section coarse crushing, then carry out middle fragmentation, crushed product carries out screening operation one time;
(b) oversize of the screening operation of its granularity more than 50mm feeds and sends into X sorting machine by rays radiation I, finishes lean hematite preliminary treatment sorting operation through X sorting machine by rays radiation I and selects in advance barren rock and throw in advance tail; The undersize of the granularity 0～50mm of a screening operation feeds the regrading operation;
(c) its granularity is sent into X sorting machine by rays radiation II at the oversize of the regrading operation of 12～50mm, finishes lean hematite preliminary treatment sorting operation and selects in advance barren rock and throw in advance tail; The undersize of 0～12mm feeds lower road grinding operation as fine ore;
(d), X sorting machine by rays radiation I and X sorting machine by rays radiation II barren rock are thrown product behind the tail and are merged and feed the thin broken machine and return the regrading operation form closed circuit after fragmentation.
Adopt method of the present invention that the lean hematite of ferrous grade about 15% is carried out preliminary treatment and sort, the grade of ore behind the barren rock of dishing out can reach more than 25%, and the barren rock productive rate of dishing out is more than 60%.
Claims (1)
1. one kind is utilized the X ray separator to the method for lean hematite preliminary treatment throwing tail, it is characterized in that may further comprise the steps:
(a) the lean hematite raw ore is carried out one section coarse crushing, then carry out middle fragmentation, crushed product carries out screening operation one time;
(b) oversize of the screening operation of its granularity more than 50mm feeds and sends into X sorting machine by rays radiation I, finishes lean hematite preliminary treatment sorting operation through X sorting machine by rays radiation I and selects in advance barren rock and throw in advance tail; The undersize of the granularity 0～50mm of a screening operation feeds the regrading operation;
(c) its granularity is sent into X sorting machine by rays radiation II at the oversize of the regrading operation of 12～50mm, finishes lean hematite preliminary treatment sorting operation and selects in advance barren rock and throw in advance tail; The undersize of 0～12mm feeds lower road grinding operation as fine ore;
(d) X sorting machine by rays radiation I and X sorting machine by rays radiation II barren rock are thrown product behind the tail and are merged and feed the thin broken machine and return the regrading operation form closed circuit after fragmentation.
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| CN2012104617406A CN102921638A (en) | 2012-11-16 | 2012-11-16 | Method for pretreating lean hematite and discarding tailings thereof by utilizing X-ray separators |
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| CN2012104617406A CN102921638A (en) | 2012-11-16 | 2012-11-16 | Method for pretreating lean hematite and discarding tailings thereof by utilizing X-ray separators |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207190A (en) * | 2013-04-18 | 2013-07-17 | 辽宁科技大学 | Method for measuring rock mixing rate of laboratory |
| CN103316853A (en) * | 2013-06-06 | 2013-09-25 | 东北大学 | Method for sorting and pre-enriching lean hematite by using X-ray radiation |
| CN105209645A (en) * | 2013-03-05 | 2015-12-30 | 卡博特公司 | Methods to recover cesium or rubidium from secondary ore |
| CN110433954A (en) * | 2019-06-06 | 2019-11-12 | 河南黄金产业技术研究院有限公司 | A kind of richness golden beneficiation method of gold ore and golden barren rock |
| CN111686927A (en) * | 2020-06-22 | 2020-09-22 | 金建工程设计有限公司 | Resource utilization method of tungsten ore waste rock and tungsten tailings |
| CN111871587A (en) * | 2020-07-09 | 2020-11-03 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for improving and stabilizing copper ore selection grade |
| CN112170000A (en) * | 2020-09-18 | 2021-01-05 | 滦平建龙矿业有限公司 | Pre-screening treatment system and process for magnetite high-pressure roller mill before grinding |
| CN113500015A (en) * | 2021-07-08 | 2021-10-15 | 湖州霍里思特智能科技有限公司 | Method and system for ore preselection based on hierarchical array type intelligent sorting |
| CN114178043A (en) * | 2021-12-23 | 2022-03-15 | 武钢资源集团大冶铁矿有限公司 | Mineral separation process for copper-containing iron ore |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105209645A (en) * | 2013-03-05 | 2015-12-30 | 卡博特公司 | Methods to recover cesium or rubidium from secondary ore |
| US9458524B2 (en) | 2013-03-05 | 2016-10-04 | Cabot Corporation | Methods to recover cesium or rubidium from secondary ore |
| CN105209645B (en) * | 2013-03-05 | 2017-10-31 | 卡博特公司 | The method that caesium or rubidium are collected from secondary ore |
| CN103207190A (en) * | 2013-04-18 | 2013-07-17 | 辽宁科技大学 | Method for measuring rock mixing rate of laboratory |
| CN103316853A (en) * | 2013-06-06 | 2013-09-25 | 东北大学 | Method for sorting and pre-enriching lean hematite by using X-ray radiation |
| CN110433954A (en) * | 2019-06-06 | 2019-11-12 | 河南黄金产业技术研究院有限公司 | A kind of richness golden beneficiation method of gold ore and golden barren rock |
| CN110433954B (en) * | 2019-06-06 | 2021-07-09 | 河南黄金产业技术研究院有限公司 | Gold-rich beneficiation method for gold ore and gold barren rock |
| CN111686927B (en) * | 2020-06-22 | 2021-09-03 | 金建工程设计有限公司 | Resource utilization method of tungsten ore waste rock and tungsten tailings |
| CN111686927A (en) * | 2020-06-22 | 2020-09-22 | 金建工程设计有限公司 | Resource utilization method of tungsten ore waste rock and tungsten tailings |
| CN111871587A (en) * | 2020-07-09 | 2020-11-03 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for improving and stabilizing copper ore selection grade |
| CN112170000A (en) * | 2020-09-18 | 2021-01-05 | 滦平建龙矿业有限公司 | Pre-screening treatment system and process for magnetite high-pressure roller mill before grinding |
| CN113500015A (en) * | 2021-07-08 | 2021-10-15 | 湖州霍里思特智能科技有限公司 | Method and system for ore preselection based on hierarchical array type intelligent sorting |
| WO2023280302A1 (en) * | 2021-07-08 | 2023-01-12 | 湖州霍里思特智能科技有限公司 | Method and system for performing ore pre-dressing on basis of hierarchical array-type intelligent dressing |
| CN113500015B (en) * | 2021-07-08 | 2023-03-31 | 湖州霍里思特智能科技有限公司 | Method and system for ore preselection based on hierarchical array type intelligent sorting |
| CN114178043A (en) * | 2021-12-23 | 2022-03-15 | 武钢资源集团大冶铁矿有限公司 | Mineral separation process for copper-containing iron ore |
| CN114178043B (en) * | 2021-12-23 | 2024-04-05 | 武钢资源集团大冶铁矿有限公司 | Beneficiation process for copper-containing iron ore |
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Application publication date: 20130213 |