CN103736582A - Method for sorting monohydrallite - Google Patents
Method for sorting monohydrallite Download PDFInfo
- Publication number
- CN103736582A CN103736582A CN201310678532.6A CN201310678532A CN103736582A CN 103736582 A CN103736582 A CN 103736582A CN 201310678532 A CN201310678532 A CN 201310678532A CN 103736582 A CN103736582 A CN 103736582A
- Authority
- CN
- China
- Prior art keywords
- grader
- slurry
- ore
- coarse granule
- chute
- 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
Images
Landscapes
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention relates to a mineral separation-Bayer process in the aluminum oxide production process, in particular to the improvement of a technique in the ore grinding and mineral separation process, and discloses a method for sorting monohydrallite. The method comprises the steps that raw ore is crushed, levigated and graded through a grader, sand return and regrinding are carried out on rough particle ore pulp flow separated from the top end of the grader, and grader underflow ore pulp floatation is carried out. The method is characterized in that sand return sampling analysis is carried out at an inlet chute at the top end of the grader, and when A/S is larger than 5.0, the rough particle ore pulp flow separated from the top end of the grader is directly discharged out and used as ore concentrate for producing aluminum oxide through the Bayer process. According to the method, the production mode of the whole closed cycle of a conventional grader is broken through, the treatment capacity of a mill can be effectively improved, the of pressure subsequent flotation, sedimentation and other production links is reduced, the mineral separation yield is improved, mineral separation production cost is lowered, and therefore the operation cost of aluminum oxide production is lowered.
Description
Technical field
A kind of dressing method of bauxite.Relate to one " ore dressing-Bayer process " and produce in alumina process, the improvement of the process of ore grinding, ore dressing process specifically.
Technical background
Ore concentration of bauxite technology is to use flotation means, can be under existence conditions the content of aluminium in enrichment bauxite to greatest extent, make it to become the acceptable material of alumina producing Bayer process.Therefore, " ore dressing-Bayer process " becomes the important method of alumina producing gradually.
Ore dressing region sorting bauxite at present, mainly that tcrude ore is prepared into the ore pulp that meets floatation concentration, fineness requirement after broken, levigate and classification, again by the content of aluminium in floating and enriching ore pulp, ore pulp after enrichment is by production stages such as press filtration, allotments, by meeting of the making pulp conveying that alumina producing Bayer process requires to alumina producing downstream links.But because the hardness of ore own is higher, its grindability is poor, in order to guarantee dense, the fineness of flotation requirement, in organization of production, grinding machine discharge quantity usually can affect production capacity realization, and grinding machine production capacity is low, directly causes ore dressing output to fail further to improve.
Summary of the invention
Object of the present invention is exactly the deficiency existing in above-mentioned prior art, provide one can effectively increase grinding machine disposal ability, reduce the production link pressure such as postorder flotation, sedimentation, increase ore dressing output, reduce mineral processing production cost, and then reduce the dressing method of the bauxite of the operating cost of alumina producing.
The object of the invention is to be achieved through the following technical solutions.
A kind of dressing method of bauxite, its process comprises that tcrude ore carries out through broken, levigate, grader classification, the isolated coarse granule flow of slurry in grader top that sand return is regrinded, the step of grader underflow flotation of ore pulp, it is characterized in that entering on grader top chute place sand return sample analysis, when A/S is greater than 5.0, the isolated coarse granule flow of slurry in grader top is directly discharged, and as concentrate, is used for alumina producing Bayer process.
The dressing method of a kind of bauxite of the present invention, is characterized in that it is by entering chute place in the sand return of grader top that the isolated coarse granule flow of slurry in grader top is directly discharged, and in interior outward turning symmetrical center line place, opens that an ore pulp floss hole discharges; Below described ejaculation mine mouth, connect a chute, this chute upper end is designed with active plugboard, for control the isolated coarse granule flow of slurry in grader top be switch grader top isolated coarse granule flow of slurry discharge whether.
The dressing method of a kind of bauxite of the present invention, is characterized in that described chute below is connected to belt conveyor, makes the isolated coarse granule flow of slurry in grader top enter concentrate stockyard.
The dressing method of a kind of bauxite of the present invention, in the sand return of grader top, enter chute place and open gape, the sand return higher A/S tentatively sorting is arranged outward, reduce capacity consumption when this part sand return enters grinding classification system once again as internal circulating load, increased grinding machine and carry the space of product.It has broken the production model of the whole closed cycles of conventional grader, in effective enrichment aluminum ore, in aluminium content, has retained the effect that grader tentatively sorts grade; By the bauxite of preliminary effectively enrichment outer row in time, reduce the internal circulating load that reenters grinding classification system, can further promote on this basis grinding machine production capacity.
Method of the present invention, connects chute and belt conveyor owing to arranging at concentrate under mouth outward, can in time the concentrate that meets need of production be discharged to outward transport, makes on the one hand the steadily efficient operation of this flow process; Guaranteed on the other hand environment when grader is to size fraction.
Method of the present invention, due to the higher concentrate of this part A/S is arranged, has reduced the addition at postorder floatation process Chinese medicine etc. outward, has reduced production cost; Can reduce in addition postorder sedimentation is filtered to the pressure passing through, guarantee the stable operation of whole production system.
Accompanying drawing explanation
Fig. 1 is the process chart of the inventive method.
The specific embodiment
A kind of dressing method of bauxite, its process comprises that tcrude ore carries out through broken, levigate, grader classification, the isolated coarse granule flow of slurry in grader top that sand return is regrinded, the step of grader underflow flotation of ore pulp, on grader top, enter chute place sand return sample analysis, when A/S is greater than 5.0, the isolated coarse granule flow of slurry in grader top is directly discharged, and as concentrate, is used for alumina producing Bayer process.
Embodiment
Grind grading separate system, on the architecture basics of former 1# grinding machine, grader, enters chute place (in interior outward turning symmetrical center line place) in the sand return of grader top, opens the circular hole of a diameter 250mm.Below above-mentioned ejaculation mine mouth, connect the chute that is about together 3m, this chute upper end connects with flange, is designed with active plugboard, can be closed if desired easy access or cut and stop this ejaculation ore deposit flow process.Chute below connects a belt, and this concentrate enters concentrate stockyard.
Through overtesting, grope, when 1# grinding machine discharge quantity is 80t/h, when about 20t/h is measured in its outer ejaculation ore deposit, whole grinding classification system can held stationary running.
Claims (3)
1. the dressing method of a bauxite, its process comprises that tcrude ore carries out through broken, levigate, grader classification, the isolated coarse granule flow of slurry in grader top that sand return is regrinded, the step of grader underflow flotation of ore pulp, it is characterized in that entering on grader top chute place sand return sample analysis, when A/S is greater than 5.0, the isolated coarse granule flow of slurry in grader top is directly discharged, and as concentrate, is used for alumina producing Bayer process.
2. the dressing method of a kind of bauxite according to claim 1, it is characterized in that it is by entering chute place in the sand return of grader top that the isolated coarse granule flow of slurry in grader top is directly discharged, in interior outward turning symmetrical center line place, open that an ore pulp floss hole discharges; Below described ejaculation mine mouth, connect a chute, this chute upper end is designed with active plugboard, for control the isolated coarse granule flow of slurry in grader top be switch grader top isolated coarse granule flow of slurry discharge whether.
3. the dressing method of a kind of bauxite according to claim 2, is characterized in that described chute below is connected to belt conveyor, makes the isolated coarse granule flow of slurry in grader top enter concentrate stockyard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310678532.6A CN103736582A (en) | 2013-12-14 | 2013-12-14 | Method for sorting monohydrallite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310678532.6A CN103736582A (en) | 2013-12-14 | 2013-12-14 | Method for sorting monohydrallite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103736582A true CN103736582A (en) | 2014-04-23 |
Family
ID=50493690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310678532.6A Pending CN103736582A (en) | 2013-12-14 | 2013-12-14 | Method for sorting monohydrallite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103736582A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643055A (en) * | 2013-11-02 | 2014-03-19 | 株洲冶炼集团股份有限公司 | Total wet method zinc smelting concentrate production material preparation technology |
| CN105344463A (en) * | 2015-11-25 | 2016-02-24 | 昆明冶金研究院 | Method for sorting bauxite with medium-low alumina-silica ratio |
| CN106902975A (en) * | 2017-05-10 | 2017-06-30 | 昆明理工大学 | A kind of substep desiliconization method for upgrading of high alumina high-silicon type bauxite |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5124028A (en) * | 1990-06-28 | 1992-06-23 | The Dow Chemical Company | Froth flotation of silica or siliceous gangue |
| CN1324696A (en) * | 2000-05-19 | 2001-12-05 | 中南工业大学 | Bauxite dressing method |
| CN1369328A (en) * | 2001-02-13 | 2002-09-18 | 中南大学 | Ore dressing process for desiliconizing bauxite |
| CN1803300A (en) * | 2005-11-28 | 2006-07-19 | 中国铝业股份有限公司 | Flotation selection and desiliconization method for middle and low grade alumyte |
| CN102527501A (en) * | 2010-12-07 | 2012-07-04 | 中铝国际技术发展有限公司 | Configuration method for bauxite ore processing grinding-flotation workshop |
-
2013
- 2013-12-14 CN CN201310678532.6A patent/CN103736582A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5124028A (en) * | 1990-06-28 | 1992-06-23 | The Dow Chemical Company | Froth flotation of silica or siliceous gangue |
| CN1324696A (en) * | 2000-05-19 | 2001-12-05 | 中南工业大学 | Bauxite dressing method |
| CN1369328A (en) * | 2001-02-13 | 2002-09-18 | 中南大学 | Ore dressing process for desiliconizing bauxite |
| CN1803300A (en) * | 2005-11-28 | 2006-07-19 | 中国铝业股份有限公司 | Flotation selection and desiliconization method for middle and low grade alumyte |
| CN102527501A (en) * | 2010-12-07 | 2012-07-04 | 中铝国际技术发展有限公司 | Configuration method for bauxite ore processing grinding-flotation workshop |
Non-Patent Citations (1)
| Title |
|---|
| 陈远道: "《高效铝土矿浮选捕收剂的研究与应用》", 《中国博士学位论文全文数据库（电子期刊）》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643055A (en) * | 2013-11-02 | 2014-03-19 | 株洲冶炼集团股份有限公司 | Total wet method zinc smelting concentrate production material preparation technology |
| CN105344463A (en) * | 2015-11-25 | 2016-02-24 | 昆明冶金研究院 | Method for sorting bauxite with medium-low alumina-silica ratio |
| CN105344463B (en) * | 2015-11-25 | 2018-07-13 | 昆明冶金研究院 | One kind selecting method for distinguishing for middle low alumina-silicon ratio alumyte |
| CN106902975A (en) * | 2017-05-10 | 2017-06-30 | 昆明理工大学 | A kind of substep desiliconization method for upgrading of high alumina high-silicon type bauxite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104923386B (en) | The pre-selection of fine grain teeth cloth composite ore coarse grain, magnetic-weight sorting process | |
| CN103447144A (en) | Method for raising iron content and reducing silicon in concentrate by means of low-intensity magnetic separation process | |
| CN103272694B (en) | Magnetic-gravity separation technology for Anshan type lean magnetite | |
| CN103736584B (en) | A kind of beneficiation method of high-grade copper-nickel sulphide ore | |
| CN104888960B (en) | The magnetic of the red composite ore of fine grain teeth cloth magnetic floats sorting process | |
| WO2023060890A1 (en) | Beneficiation method for stepped recovery and segmented tailing discarding of low-grade chromite ore | |
| CN110449255B (en) | Fluorite lean ore color separation upgrading-tailing discarding preselection method | |
| CN105797831B (en) | Technique is selected in the dissociation of coal again in a kind of coking end | |
| CN103386356A (en) | Flotation method for copper sulphide ore | |
| CN102259051A (en) | Novel fine poor magnetic iron ore dressing process using centrifuges | |
| CN101579654A (en) | Iron ore powder mineral dressing process | |
| CN111495788A (en) | Method for intelligently and preferentially selecting copper-blue-containing copper sulfide ore by X-ray | |
| CN103920582B (en) | A kind of closed circuit grading technology being applicable to Bed for Fine Coal classification | |
| CN103736582A (en) | Method for sorting monohydrallite | |
| CN112024120B (en) | Beneficiation method for micro-fine-particle-grade hematite and limonite | |
| CN111495576A (en) | Ore dressing method for separating and separating garnet ores with uneven embedded particle sizes in split flow mode | |
| CN205868519U (en) | Broken system is concentrated in ore dressing | |
| CN202238241U (en) | Dry magnetic pre-separating device for fine broken ores | |
| CN104096627B (en) | The method of the black tungsten beneficiating efficiency of a kind of effective raising | |
| CN209985567U (en) | Low-grade magnesite pre-enrichment system | |
| CN204724311U (en) | A kind of grading plant for the plumbous sulfide mixed concentrate of molybdenum | |
| CN206810454U (en) | A kind of novel mineral crushing system | |
| CN102078839A (en) | Method for sorting first-section grind grading overflow in laterite dressing | |
| CN109876918B (en) | Preparation method of antimony oxide ore monomineral | |
| CN214288771U (en) | Low-grade graphite ore dressing system for improving yield of ultra-large scale graphite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140423 |