CN1240479C - Washup-flotation process for stacked bauxite - Google Patents
Washup-flotation process for stacked bauxite Download PDFInfo
- Publication number
- CN1240479C CN1240479C CN 200410020580 CN200410020580A CN1240479C CN 1240479 C CN1240479 C CN 1240479C CN 200410020580 CN200410020580 CN 200410020580 CN 200410020580 A CN200410020580 A CN 200410020580A CN 1240479 C CN1240479 C CN 1240479C
- Authority
- CN
- China
- Prior art keywords
- washup
- bauxite
- ore
- floatation
- flotation
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The present invention discloses a mineral separation technology of bauxite, which particularly relates to an ore washing-floatation technology of cumulate bauxite. The single washing technology of the cumulate bauxite is changed to a technology of washing and appending dispersant and carrying out the floatation of washing tailing. The technology of the present invention can improve the quality of ore concentrate washing and reduce the mud ratio of ore concentrate washing. Large amounts of gibbsite, diasporite and boehmite in the washing tailing can be reclaimed by the floatation to achieve the purpose of fully utilizing bauxite resources.
Description
Affiliated technical field
The present invention relates to the washup technology of bauxite, relate in particular to a kind of washup-floatation process of accumulative bauxite.
Background technology
Accumulative bauxite is the type that the distinctive a kind of bauxite of China becomes the ore deposit.Mainly be distributed in provinces such as Guangxi, Yunnan, Sichuan and Guizhou.The accurate definition of accumulative bauxite is: primary stratiform bauxite, the mineral deposit series of rocks, geologic agent such as be subjected to weathering for a long time, degrade, existing physics, also have the chemistry effect, mineral deposit roof and floor country rock runs off, bauxite weathering resistance power is piled up in the original place by force, mixes in earth but also become lumpiness and granule size not to wait by weathering, leaching.
The washup technological process that current accumulative bauxite adopts owing to be subjected to the misleading of " greater than 1mm is the ore deposit, is mud less than 1mm ", make a large amount of gibbsite, diaspore and boehmites less than 1mm be used as " mud " and dumps.Fig. 1 is the washup process chart of traditional accumulative bauxite, and the washup technological process that current accumulative bauxite shown in Figure 1 adopts mainly comprises the steps: at first will contain mud bauxite and feeds cylinder and sieve and wash in the machine water flushing; More than or equal to 50mm grade ore, wash concentrate after will washing then, less than 50mm grade ore, again by the launder washer washup by obtaining after the picking; The launder washer washup is with direct as washing concentrate more than or equal to 1mm grade ore, dumps as mud less than 1mm grade ore.Present washup flow process, general every production is washed concentrate for one ton, need to consume 2.5 tons and contains mud bauxite to 3 tons.Through measuring and calculating, every production is washed concentrate for 1 ton, almost will lose 1 ton of fine fraction aluminum ore.It is low to work as the ore-bearing rate that contains mud bauxite especially, and the aluminum ore of loss is just many more.Because launder washer is to be boundary with 1mm, thus be prone to the screen cloth accident of stopping up, in case it is very big to the ordinary production influence stifled sieve accident to occur.
Mention in " pile up the mineral deposit and replenish the geological prospecting final report " (1982,9) according to Guangxi 270 geologic prospecting partys: this mining area has table soil (to refer to ore-bearing rate＜200kg/m
3Cover layer) exploration engineering to visit numeber of mines be 1714, account for 37% of total exploratory well number, the average thick 1.46m of table soil, according to the statistics of 202 exploratory wells, the average ore-bearing rate 134kg/m of table soil
3, AL2O357.57%; SiO
27.47%, AL
2O
3/ SiO
2Be A/S 7.71.
Full mining area base plate is that the exploratory well of limestone has 1667, accounts for 45.5%; And the exploratory well that does not penetrate ore body has 204, accounts for 5.6%; Base plate is that the exploratory well of foundry loam has 1794, accounts for 48.9%.According to 228 exploratory well base plates be foundry loam statistics result, average ore-bearing rate 181kg/m of foundry loam
3AL
2O
352.40%; SiO
210.75%, A/S is 4.88.
Above-mentioned roof and floor ledge, because human factor, regulation is just calculated the ore deposit more than or equal to the above grade of 1mm, causes ore-bearing rate not reach the industrial index requirement, all will be used as ground and peel off and abandon.Add wherein containedly less than the fine-graded ore of 1mm, lose how many bauxite resources again? estimation because of this situation in the accumulative bauxite reserves of Guangxi, bauxite resource loss will be in several hundred million tons.If consider that less than aluminum ore contained in the 1mm mud, then the industrial index ore-bearing rate can drop to 100kg/m
3Below, at double the increase possibly of the resource reserve of Guangxi accumulative bauxite.
The current concentrate total surface of washing is to be attached with low-grade sludge, makes to wash concentrate alumina silica ratio A/S and reduce, and to wash granularity of concentrate more little but also exist, and the sludge of absorption is with regard to high more problem.
According to Chalco Guangxi branch company right＞50mm and following grade grade of ore measurement result thereof see Table one:
Table one: the size fractionated grade of ore
| Grade (mm) | Al 2O 3(％) | SiO 2(％) | Fe 2O 3(％) | Vector (%) burns | Alumina silica ratio | The ferro-aluminum ratio |
| ≥50 | 59.47 | 4.29 | 17.97 | 13.53 | 13.86 | 3.31 |
| 50-30 | 54.87 | 3.61 | 23.34 | 13.21 | 15.20 | 2.35 |
| 30-10 | 50.69 | 7.7 | 24.16 | 12.39 | 6.58 | 2.10 |
| 10-1 | 44.42 | 11.43 | 26.98 | 12.41 | 3.89 | 1.65 |
| On average | 52.36 | 6.76 | 23.11 | 12.88 | 7.75 | 2.27 |
Can find out that from table 〉=50mm grade ore A/S reaches 13.86 and 30-50mm grade ore, A/S is up to more than 15, and 10-30mm grade ore A/S drops to 6.58 rapidly; 10mm to 1mm grade ore A/S then drops to 3.89.
Summary of the invention
Technical problem to be solved by this invention is: to having the sludge that the washup technological process dumps now, increase flotation operation, the sludge that will contain a large amount of gibbsites, diaspore and boehmite reclaims above-mentioned beneficial mineral by flotation, improves its resource utilization; Simultaneously add dispersant, sludge is well-dispersed in the wash water, improve the A/S that washes concentrate in the washup operation; Washup and flotation granularity are the boundary with 30mm, can make and wash concentrate, and A/S brings up to more than 13.86 from 7.75, have also solved the problem of stopping up screen cloth; Improved the head grade of going into flotation operation, also favourable to improving flotation concentrate A/S.
Be achieved in that a kind of accumulative bauxite washup-floatation process in order to solve the problems of the technologies described above the present invention, it comprises the following stage: will contain mud bauxite and feed cylinder and sieve and wash in the machine, the water flushing is the phase I;
To wash later more than or equal to 50mm grade ore and obtain qualified bauxite after by picking, coarse crushing, grinding and sieving, be second stage by the launder washer washup less than 50mm grade ore again;
To directly be incorporated into more than or equal to 1mm grade ore by the launder washer washup and to wash concentrate, less than 1mm grade sludge by floatation less than 1mm grade ore recuperation, the acquisition flotation concentrate is the phase III.
The above-mentioned phase I is: will contain mud bauxite and feed and when cylinder is sieved and washed in the machine dispersant is added cylinder and sieve and wash in the machine water flushing.
Above-mentioned dispersant can be sodium carbonate or NaOH.
With the above-mentioned phase III can also be: the launder washer washup will be more than or equal to 30mm grade ore as washing concentrate, by floatation the beneficial mineral flotation obtained flotation concentrate behind, the ore grinding classified, in small, broken bits less than 30mm grade ore.
The floatation of above-mentioned phase III comprises the following stage: a primary election operation, once purging selection operation, twice selected operation, floatation can adopt direct flotation, also can adopt reverse flotation.
Above-mentioned less than 30mm grade ore classified after, will go in small, broken bits, in small, broken bits more than or equal to 15mm grade ore less than integrating with ore grinding less than 15mm grade ore after 15mm grade ore and the classification.
Advantage of the present invention and effect are as follows:
1, the present invention can reclaim bauxite resource fully rationally, to greatest extent.Diaspore in the accumulative bauxite, gibbsite, boehmite and earth are mainly based on mixed in together.Only reclaim by 70% and calculate, only accumulative bauxite resource reserve in Guangxi also can increase more than 400,000,000 tons, because can be with less than the ore recuperation in the 1mm fine fraction by flotation.Be this industrial index to accumulative bauxite, should with contain mud bauxite less than in the 1mm fine fraction sludge, beneficial mineral content considers that comprehensively the border ore-bearing rate can drop to 100kg/m at least like this
3Below, thereby Guangxi accumulative bauxite resource reserve will be multiplied not needing to drop into a large amount of exploration engineerings.
2, can reduce the mine tailing amount of dumping, dump expense thereby can account for less to plough and reduce mine tailing.
3, add dispersant in the washup operation, can improve and wash concentrate A/S, indexs such as the production capacity that improves alumina producer and alkaline consumption are all had tangible economic benefit.
4, because the employing flotation can be reclaimed bauxite more, thereby can reduce stope ore extraction amount, the freight volume that contains the mud ore simultaneously also reduces widely, and the cost of concentrate will descend significantly.
5, because the flotation concentrate granularity is thinner, alumina producer ore grinding expense also can be saved many.
6, according to the ensaying of geologic prospecting party to certain 6 mine tailing sample in mining area, its main component is a gibbsite, also is that gibbsite is in the majority in the flotation concentrate certainly, and this also is very favorable to alumina producing.
But 7 using water wisely, single washup flow process, mine tailing can not directly utilize through the overflow of thickener and the water in the filter press filtrate.Adopt technology of the present invention, overflow of concentrate thickener and concentrate filter press filtrate, can be directly after pressurization as the flushing water of washup flow process.
8, because flotation is to utilize the mine tailing that dumps, has saved a series of expenses such as raw ore exploitation, transportation, fragmentation, thereby made concentrate with low cost, tentatively conservative estimations, concentrate per ton is below 40 yuan, only is existing 1/3 of the concentrate of washing; It only is Central Region branch company diaspore-below 1/4 of kaolinite type ore concentration of bauxite cost.
9, process of the present invention is not only applicable to the washup of accumulative bauxite, also is applicable to the washup of three water-type bauxites.
Description of drawings:
Fig. 1 is the washup process chart of traditional accumulative bauxite.
Fig. 2 is accumulative bauxite washup of the present invention-floatation process embodiment one flow chart.
Fig. 3 is accumulative bauxite washup of the present invention-floatation process embodiment two flow charts.
The specific embodiment:
[embodiment one]
Fig. 2 is accumulative bauxite washup of the present invention-floatation process embodiment one flow chart.On the basis that does not change original equipment, the technology of present embodiment comprised as the next stage:
To contain mud bauxite and feed cylinder and sieve and wash in the machine, and simultaneously dispersant sodium carbonate or NaOH be added cylinder and sieve and wash in the machine, the water flushing is the phase I;
To wash later to obtain after by picking and wash concentrate, and specifically comprise picking, coarse crushing, obtain qualified bauxite after washing Hou Kuang stockyard, grinding and sieving more than or equal to 50mm grade ore; Less than 50mm grade ore is second stage by the launder washer washup again;
To directly be incorporated into more than or equal to 1mm grade ore by the launder washer washup and to wash concentrate, will be less than 1mm grade sludge by floatation less than ore floatation in the 1mm grade, the acquisition flotation concentrate is the phase III.
Above-mentioned floatation comprises a primary election operation, once purging selection operation, twice selected operation, with the ore after for the second time selected through concentrate, must flotation concentrate after the press filtration; Floatation can adopt direct flotation, also can adopt reverse flotation.
Above-mentioned thickener overflow and filter press filtrate, can be directly after pressurization as the flushing water of washup flow process.Present embodiment adds dispersant in the washup operation, and sludge is well-dispersed in the wash water, improves the A/S that washes concentrate.Because dispersant is sodium carbonate or NaOH, can not bring adverse effect to alumina producing.As for to flotation operation, according to the ore concentration of bauxite achievement, also need to adjust the pH value of ore pulp, so also be favourable to flotation with sodium carbonate.
Present embodiment can at first directly be taked sample ore what launder washer dumped less than 1mm mud, carries out small-sized float test.So that obtain best flotation flowsheet and regime of agent.If the 0.5mm-1mm ore is unfavorable for flotation, then need to tell the 0.5-1mm ore with cyclosizer, carry out carrying out flotation again with after joining less than 0.5mm behind the ore grinding.
Above-mentioned mog accounts for 70% for-200 orders, obtains flotation concentrate through flotation operation.
[embodiment two]
Fig. 3 is accumulative bauxite washup of the present invention-floatation process embodiment two flow charts.
Present embodiment is to setting greater than 50mm and following grade grade of ore measurement result thereof, and more than or equal to 50mm grade ore, A/S reaches 13.86 and 30-50mm grade ore, and A/S is up to more than 15, and 10-30mm grade ore A/S drops to 6.58 rapidly; 10mm to 1mm grade ore A/S then drops to 3.89.
Present embodiment proposition washup and flotation granularity are the boundary with 30mm for this reason.Just the screen cloth of launder washer is adjusted to 30mm.The technology of present embodiment comprised as the next stage:
To contain mud bauxite and feed cylinder and sieve and wash in the machine, and simultaneously dispersant sodium carbonate or NaOH be added cylinder and sieve and wash in the machine, the water flushing is the phase I;
Flushing back is obtained after by picking more than or equal to 50mm grade ore and is washed concentrate, specifically comprises picking, coarse crushing, obtains qualified bauxite after washing Hou Kuang stockyard, grinding and sieving; Less than 50mm grade ore is second stage by the launder washer washup again;
By the launder washer washup, will be more than or equal to 30mm grade ore as washing concentrate, by floatation the beneficial mineral flotation being obtained flotation concentrate behind, the ore grinding classified, in small, broken bits less than 30mm grade ore is the phase III, wherein classification be with less than 15mm grade ore directly into the grinding machine ore grinding, greater than 15mm grade ore after in small, broken bits, with integrate with the grinding machine ore grinding less than 15mm grade ore, mog accounts for 70% for-200 orders, obtains the phase III of flotation concentrate through flotation operation.Other is with embodiment one.
Adopt present embodiment, can make and wash concentrate A/S and bring up to more than 13.86 from 7.75.Also improved simultaneously the head grade of going into flotation operation, also favourable to improving flotation concentrate A/S.
To 30mm, its washup efficient can increase substantially the flow process of washup simultaneously because of the screen cloth that has strengthened launder washer, and stifled sieve accident just can not take place basically.
Claims (7)
1, a kind of washup-floatation process of accumulative bauxite is characterized in that it comprises the following stage:
To contain mud bauxite and feed cylinder and sieve and wash in the machine, the water flushing is the phase I;
To wash later more than or equal to 50mm grade ore and obtain qualified bauxite after by picking, coarse crushing, grinding and sieving, be second stage by the launder washer washup less than 50mm grade ore again;
To directly be incorporated into more than or equal to 1mm grade ore by the launder washer washup and to wash concentrate, less than 1mm grade sludge by floatation less than 1mm grade ore floatation, the acquisition flotation concentrate is the phase III.
2, the washup-floatation process of a kind of accumulative bauxite according to claim 1 is characterized in that the described phase I is: will contain mud bauxite and feed cylinder and sieve and wash in the machine, and simultaneously dispersant be added cylinder and sieve and wash in the machine, the water flushing.
3, the washup-floatation process of a kind of accumulative bauxite according to claim 2 is characterized in that described dispersant can be sodium carbonate or NaOH.
4, the washup-floatation process of a kind of accumulative bauxite according to claim 1, it is characterized in that the above-mentioned phase III can also be: the launder washer washup will be washed concentrate more than or equal to the conduct of 30mm, by floatation the beneficial mineral flotation be obtained flotation concentrate behind classified, in small, broken bits, the ore grinding less than 30mm.
5, the washup-floatation process of a kind of accumulative bauxite according to claim 4, it is characterized in that described less than 30mm grade ore classified after, to go in small, broken bits, in small, broken bits more than or equal to 15mm grade ore less than integrating with ore grinding less than 15mm grade ore after 15mm grade ore and the classification.
6, the washup-floatation process of a kind of accumulative bauxite according to claim 4 is characterized in that described mog accounts for 70% for-200 orders, obtains flotation concentrate through flotation operation.
7, the washup-floatation process of a kind of accumulative bauxite according to claim 1, it is characterized in that described floatation comprises the following stage: a primary election operation, once purging selection operation, twice selected operation, floatation can adopt direct flotation, also can adopt reverse flotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020580 CN1240479C (en) | 2004-05-20 | 2004-05-20 | Washup-flotation process for stacked bauxite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020580 CN1240479C (en) | 2004-05-20 | 2004-05-20 | Washup-flotation process for stacked bauxite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1579638A CN1579638A (en) | 2005-02-16 |
| CN1240479C true CN1240479C (en) | 2006-02-08 |
Family
ID=34581884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410020580 Expired - Fee Related CN1240479C (en) | 2004-05-20 | 2004-05-20 | Washup-flotation process for stacked bauxite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1240479C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249475B (en) * | 2008-04-01 | 2011-05-04 | 中国铝业股份有限公司 | Method of flotation removing quartz for alumyte |
| CN101757986B (en) * | 2009-12-18 | 2013-03-20 | 中国铝业股份有限公司 | Method for floating bauxite |
| CN102806136A (en) * | 2012-07-27 | 2012-12-05 | 中国铝业股份有限公司 | Method for treating bauxite |
| CN104307615B (en) * | 2014-08-18 | 2016-06-29 | 营口东吉科技（集团）有限公司 | A kind of magnesite desliming device |
| CN105435942A (en) * | 2014-09-16 | 2016-03-30 | 沈阳铝镁设计研究院有限公司 | Bauxite coarse-fine separation grinding method |
| CN105057072B (en) * | 2015-09-02 | 2017-06-30 | 云南华联锌铟股份有限公司 | A kind of comprehensive recycling process of many metal poor values and its resource of barren rock containing ore deposit |
| CN107597410B (en) * | 2017-08-12 | 2019-07-09 | 陈俊 | A kind of sludge separator of high-efficiency environment friendly |
| CN109046742A (en) * | 2018-10-16 | 2018-12-21 | 中国铝业股份有限公司 | A kind of launder washer grass roots automatic cleaning apparatus and method for cleaning |
| CN109622209B (en) * | 2018-12-26 | 2021-02-26 | 湖南柿竹园有色金属有限责任公司 | Beneficiation method for high-clay-content low-grade tungsten ore |
-
2004
- 2004-05-20 CN CN 200410020580 patent/CN1240479C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1579638A (en) | 2005-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102896047B (en) | Method for beneficiating high-peat copper sulphide ore | |
| CN1281326C (en) | Nickel sulfide, copper tailings comprehensive recovery technology | |
| CN101513625B (en) | Overall utilization and treating process of iron ore mine | |
| CN1240479C (en) | Washup-flotation process for stacked bauxite | |
| CN1806930A (en) | Aluminium-iron separating and comprehensive utilizing method for high iron bauxite | |
| CN101058082A (en) | Mine milling method for improving particles size distribution of bauxite mine milling products | |
| CN101417261B (en) | Bayer process red mud processing method | |
| CN1857783A (en) | Beneficiation method for weak magnetic iron ores such as siderite, limonite and siderite paragenetic ore | |
| CN104888958A (en) | Micro-fine particle red magnetic mixed iron ore sorting process | |
| CN109482360B (en) | Mineral processing technology of rare earth, fluorite and barite associated ore | |
| CN106475219B (en) | A kind of method for removing iron of alumyte flotation tailings | |
| CN106902975A (en) | A kind of substep desiliconization method for upgrading of high alumina high-silicon type bauxite | |
| CN100354045C (en) | Bauxite crude-fine grading flotation desilicification method | |
| CN1114712A (en) | Mining and ore dressing process new modle for mine | |
| CN113441274A (en) | Ore dressing method for porphyry gold ore containing coarse-grain embedded cloth | |
| CN1765519A (en) | Deslim-floatation celestite inished ore process | |
| CN100382894C (en) | Gradient floatation method for bauxite | |
| CN1830574A (en) | Separation method of bauxite aluminium-silicon miterals | |
| CN1187124C (en) | Ore separating method for low-grade oxide gold ore | |
| CN104475238A (en) | Enrichment method for sedimentary type vanadium ores | |
| CN101474592A (en) | Coarse-size separation technique | |
| CN1369328A (en) | Ore dressing process for desiliconizing bauxite | |
| CN1128022C (en) | Ore dressing and desiliconizing process of bauxite | |
| CN213161291U (en) | Equipment for sorting bauxite ore | |
| CN115418498A (en) | Treatment method of lithium carbonate clay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: China Aluminum International Technology Development Co., Ltd. Assignor: Shenyang Aluminium and Magnesium Design Institute Contract fulfillment period: 2007.1.8 to 2013.1.8 Contract record no.: 2008990001300 Denomination of invention: Washup-flotation process for stacked bauxite Granted publication date: 20060208 License type: Exclusive license Record date: 20081201 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.1.8 TO 2013.1.8; CHANGE OF CONTRACT Name of requester: ZHONGLV INTERNATIONAL TECHNOLOGY DEVELOPMENT CO., Effective date: 20081201 |
|
| C56 | Change in the name or address of the patentee |
Owner name: SHENYANG ALUMINUM + MAGNESIUM ENGINEERING + RESEAR Free format text: FORMER NAME: SHENYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee after: Shenyang Aluminum & Magnesium Engineering & Research Institute Co., Ltd. Address before: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee before: Shenyang Aluminium and Magnesium Design Institute |
|
| 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: 20060208 Termination date: 20200520 |