CN108246510A - A kind of method for improving magnesite flotation recovery rate - Google Patents
A kind of method for improving magnesite flotation recovery rate Download PDFInfo
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- CN108246510A CN108246510A CN201810245624.8A CN201810245624A CN108246510A CN 108246510 A CN108246510 A CN 108246510A CN 201810245624 A CN201810245624 A CN 201810245624A CN 108246510 A CN108246510 A CN 108246510A
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- flotation
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- magnesite
- direct flotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
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Abstract
The invention discloses it is a kind of improve magnesite flotation recovery rate method, including：Counterfloatating desiliconization operation is carried out to crude ore pulp, and the selected foam of reverse flotation merged and carries out reverse flotation essence and scans, the underflow that reverse flotation essence is scanned is back to first time reverse flotation is selected or reverse flotation roughing；The underflow selected to last time reverse flotation carries out direct flotation drop calcium operation, and direct flotation is carried out to the underflow of direct flotation roughing and is scanned, it is selected that two to four direct flotations are carried out to the foam of direct flotation roughing, the selected foam of last time direct flotation is magnesite concentrate, the selected underflow of first time direct flotation carries out direct flotation essence and scans, its foam is scanned back to direct flotation roughing or direct flotation, one of operation before the foam sequence that the selected underflow of remaining direct flotation and direct flotation are scanned returns.The present invention can not only efficiently remove silico-calcium impurity, greatly improve magnesite flotation recovery rate, and can realize the application of low-grade magnesite flotation desilication drop calcium technique in the industry.
Description
Technical field
The present invention relates to magnesite ore dressing field more particularly to a kind of methods for improving magnesite flotation recovery rate.
Background technology
Magnesite is important Strategic mineral resources, is essential fire proofed wood in metallurgy, chemical industry, nonmetallic industry
Material, available for preparing the high-touch feature material needed for the fields such as space flight, aviation, military affairs, metallurgy, environmental protection.Due to magnesite resource
Reserves relative abundance is concentrated, and the grade of ore is higher, impurity is less, therefore the exploitation of magnesite " adopts richness there are serious for many years
Abandon poor " phenomenon, the not enriched high-grade ore (content of MgO that can directly utilize is depended on for a long time>46%).But with high-grade water chestnut
The requirement depleted and that downstream industry chain is to magnesite ore raw material of magnesium ore resources is higher and higher, to the past as useless
Stone is stripped the low-grade magnesite resource (content of MgO of accumulation<45%) efficient high level is carried out to develop and use as urgent need to resolve
The problem of.
The main purpose of magnesite ore dressing is to reduce siliceous gangue and the white clouds such as the quartz that subsequent processing is influenced in magnesite
The calcics gangue content such as stone, and improve content of MgO.Generally may be used for siliceous gangues such as quartz, the silicate minerals in magnesite
It is removed using reverse flotation, and direct flotation removing generally can be used for calcics gangues such as dolomite, the calcites in magnesite.By
The not enriched high-grade ore that can directly utilize, therefore magnesite technique of preparing are depended on for a long time in the exploitation of magnesite for many years
Development there are wretched insufficiency, technique of preparing far lags behind other mineral.At present, the ore-dressing technique that can realize industrialization is mostly needle
Single Counterfloatating desiliconization standard-sized sheet road technological process to more high-quality magnesite ore, and for the high calcium magnesite for being related to direct flotation
Only in the lab scale stage using trans- direct flotation standard-sized sheet road technological process, and commercial Application is difficult to obtain ideal indicator, and main cause is
Direct flotation process choosing is poor in actual production, reagent consumption is big, flow is unstable, and the magnesite concentrate yield of generation is low, production
Product are not up to standard.
As shown in Figure 1, conventional trans- direct flotation open circuit technological process is that raw ore first carries out after ore grinding in the prior art
Counterfloatating desiliconization operation, which includes a reverse flotation roughing and reverse flotation is selected twice or thrice, instead
The selected foam of flotation is expelled directly out as reverse flotation tailing, and the selected underflow of last time reverse flotation takes off as direct flotation
Ore deposit is given in calcium operation, which is included once to direct flotation roughing twice and once to the essence of direct flotation twice
Choosing, the selected foam of last time direct flotation is exactly final concentrate.Due to the limitation of the intrinsic flow of above-mentioned technique, this routine
Trans- direct flotation open circuit technological process at least have the disadvantages that：
(1) in Counterfloatating desiliconization operation in reverse flotation roughing and the selected foam of reverse flotation and direct flotation decalcification operation
Direct flotation roughing and the selected underflow of direct flotation, directly exhaust as tailing, are largely lost which results in valuable mineral.
(2) open circuit flow chats can not come back for selecting again, cause final concentrate product yield low.
(3) open circuit flow has unstability, and magnesite direct flotation has the characteristics that float-amount is very big, therefore stream of opening a way
Journey can frequently result in flow interruption, and which increase agent modulates and the difficulty of operation.
Invention content
In order to solve, trans- direct flotation open circuit technological process concentrate yield conventional in the prior art is low, is difficult to transport in industry
The technical issues of efficient stable is realized in row, the present invention provides a kind of methods for improving magnesite flotation recovery rate, can not only
Enough efficiently removal silico-calcium impurity, greatly improves magnesite flotation recovery rate, and produce and stablize, can realize low-grade magnesite
The application of flotation desilication drop calcium technique in the industry.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of method for improving magnesite flotation recovery rate, includes the following steps：
Step A, by raw magnesite ore ore grinding to basic dissociation, so as to obtain crude ore pulp；
Step B, reverse floatation agent is added in into crude ore pulp, and carries out Counterfloatating desiliconization operation；The Counterfloatating desiliconization
Operation includes first carrying out reverse flotation roughing once or twice, and then the underflow of reverse flotation roughing is carried out once to reverse flotation three times
It is selected, then the selected foam of all or part of reverse flotation merged into progress reverse flotation essence is scanned once or twice, it is anti-floating
The underflow that choosing essence is scanned is selected back to reverse flotation roughing or first time reverse flotation；
Step C, direct flotation medicament is added in into the selected underflow of last time reverse flotation and carries out processing of sizing mixing, and carry out just
Calcium operation drops in flotation；The direct flotation drop calcium operation includes first carrying out direct flotation roughing once or twice, then thick to direct flotation
The underflow progress of choosing is once scanned to direct flotation twice, and the foam of direct flotation roughing is carried out twice to four direct flotation essences
Choosing, the selected foam of last time direct flotation is exactly magnesite concentrate, and the selected underflow of first time direct flotation carry out it is primary or
Direct flotation essence is scanned twice, and the foam that direct flotation essence is scanned is scanned back to direct flotation roughing or direct flotation, remaining direct flotation essence
One of operation before the foam sequence that the underflow of choosing and direct flotation are scanned returns.Preferably, in step, by raw magnesite
Ore ore grinding is to basic dissociation, so as to obtain raw ore ore deposit of the grinding fineness to account for 60~90wt% less than 0.074mm part mass
Slurry.
Preferably, the selected foam of all or part of reverse flotation is merged an only reverse flotation essence of progress to scan.
Preferably, it carries out a direct flotation to the underflow of direct flotation roughing to scan, three is carried out to the foam of direct flotation roughing
Secondary direct flotation is selected.
As seen from the above technical solution provided by the invention, it is provided by the invention to improve magnesite flotation recovery rate
Method is to be selected as principle process and select to throw tail and return with sequence again with part chats to be integrated as the magnesite of characteristic with trans- top-up
The closed circuit flotation process of ore deposit can efficiently remove the silico-calcium impurity in magnesite, and can reduce magnesite and float anyway
Choosing repeatedly it is selected during loss, so as to significantly improve magnesite desiliconization drop calcium process flotation recovery rate, final water chestnut
The MgO rate of recovery can improve more than 20% in magnesium ore deposit concentrate product, have apparent economic benefit and social benefit.With the prior art
Middle conventional trans- direct flotation open circuit technological process is compared, the method tool provided by the present invention for improving magnesite flotation recovery rate
Have and easily realize industrialization, produce the clear superiorities such as stable, easy to operate, under the premise of product quality is ensured, can effectively improve
The concentrate MgO rate of recovery.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the flow diagram of trans- direct flotation open circuit technological process conventional in the prior art.
Fig. 2 is the flow diagram of the method provided in an embodiment of the present invention for improving magnesite flotation recovery rate.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, belongs to protection scope of the present invention.
The method provided by the present invention for improving magnesite flotation recovery rate is described in detail below.The present invention is implemented
The content not being described in detail in example belongs to the prior art well known to professional and technical personnel in the field.
A kind of method for improving magnesite flotation recovery rate, it may include following steps：
Step A, it is less than 0.074mm portions so as to obtain grinding fineness by raw magnesite ore ore grinding to basic dissociation
Sub-prime amount accounts for the crude ore pulp of 60~90wt%.
Step B, reverse floatation agent is added in into crude ore pulp, and carries out Counterfloatating desiliconization operation；The Counterfloatating desiliconization
Operation includes first carrying out reverse flotation roughing once or twice, and the foam of reverse flotation roughing directly forms reverse flotation tailing, then right
The underflow progress of reverse flotation roughing is once selected to reverse flotation three times, then the selected foam of all or part of reverse flotation is merged and is existed
It carries out reverse flotation essence once or twice together to scan and (preferably only carry out a reverse flotation essence to scan), the underflow that reverse flotation essence is scanned
Back to first time reverse flotation is selected or reverse flotation roughing, the formation of foam reverse flotation tailing that reverse flotation essence is scanned.
Step C, direct flotation medicament is added in into the selected underflow of last time reverse flotation and carries out processing of sizing mixing, and carry out just
Calcium operation drops in flotation；The direct flotation drop calcium operation includes first carrying out direct flotation roughing once or twice, then thick to direct flotation
The underflow of choosing once scan to direct flotation twice and (preferably only carry out a direct flotation to scan), and the foam that direct flotation is scanned is suitable
One of operation before sequence returns, the underflow that direct flotation is scanned form direct flotation tailing；The foam of direct flotation roughing is carried out twice extremely
Four direct flotations are selected (it is selected preferably only to carry out direct flotation three times), and the selected underflow of first time direct flotation carries out once or twice
Direct flotation essence is scanned, and the foam that direct flotation essence is scanned is scanned back to direct flotation roughing or direct flotation, the bottom that direct flotation essence is scanned
Stream forms direct flotation tailing, one of operation before the selected underflow sequence of remaining direct flotation returns, and last time direct flotation is selected
Foam is exactly magnesite concentrate.
Specifically, the method provided by the present invention for improving magnesite flotation recovery rate is to be selected as principle stream with trans- top-up
Journey simultaneously selects throwing tail to return to the closed circuit flotation process of magnesite for being integrated as characteristic, Neng Gougao with sequence again with part chats
Silico-calcium impurity in effect removal magnesite, and loss of the magnesite during flotation anyway is repeatedly selected can be reduced, from
And the flotation recovery rate of magnesite desiliconization drop calcium process can be significantly improved, the MgO rate of recovery can in final magnesite concentrate product
More than 20% is improved, there is apparent economic benefit and social benefit.With the trans- direct flotation open circuit technique of routine in the prior art
Flow is compared, and the method provided by the present invention for improving magnesite flotation recovery rate has at least the following advantages：(1) in the present invention
Closed circuit flow sorts repeatedly, reduces magnesite loss as far as possible in the circulating cycle, can significantly improve concentrate yield and the MgO rate of recovery；
(2) part chats selects throwing tail again in the present invention, avoids part intergrowth endless loop, essence is ensured while high yield is obtained
The quality of ore deposit；(3) closed circuit flow has more stability in the present invention, is conveniently operated, more can guarantee the stabilization of index.
To sum up, the embodiment of the present invention can not only efficiently remove silico-calcium impurity, greatly improve magnesite flotation recycling
Rate, and can realize the application of low-grade magnesite flotation desilication drop calcium technique in the industry.
In order to more clearly from show technical solution provided by the present invention and generated technique effect, below with tool
The method of raising magnesite flotation recovery rate that body embodiment provides the embodiment of the present invention is described in detail.
Embodiment 1
A kind of as shown in Fig. 2, method for improving magnesite flotation recovery rate, it may include following steps：
Step a, it is less than 0.074mm portions so as to obtain grinding fineness by raw magnesite ore ore grinding to basic dissociation
Sub-prime amount accounts for the crude ore pulp of 60~90wt%.
Step b, reverse floatation agent is added in into crude ore pulp, and carries out Counterfloatating desiliconization operation；The Counterfloatating desiliconization
Operation includes first carrying out a reverse flotation roughing, and the foam of reverse flotation roughing directly forms reverse flotation tailing 1, then to reverse flotation
The underflow of roughing carries out reverse flotation twice selected (i.e. reverse flotation selected I and selected II) of reverse flotation, then all or part of will instead float
Selected foam is selected to merge reverse flotation essence of progress to scan, the underflow that reverse flotation essence is scanned is floated back to anti-for the first time
Select selected (i.e. selected I) of reverse flotation, the formation of foam reverse flotation tailing 2 that reverse flotation essence is scanned.
Step c, direct flotation medicament is added in into the selected underflow of last time reverse flotation and carries out processing of sizing mixing, and carry out just
Calcium operation drops in flotation；The direct flotation drop calcium operation includes first carrying out a direct flotation roughing, then to the bottom of direct flotation roughing
Stream carries out primary direct flotation and scans, and one of operation before the foam sequence that direct flotation is scanned returns, the underflow that direct flotation is scanned is formed
Direct flotation tailing 2；Direct flotation three times is carried out to the foam of direct flotation roughing, and selected (i.e. direct flotation is selected I, selected II and of direct flotation
Direct flotation is selected III), and first time direct flotation is selected, and (i.e. the underflow direct flotation essence of progress of selected I) of direct flotation is scanned, and is top-uped
The foam that choosing essence is scanned is scanned back to direct flotation roughing or direct flotation, and the underflow that direct flotation essence is scanned forms direct flotation tailing 1,
Remaining direct flotation selected (operation together with i.e. before the underflow sequence return of direct flotation selected II and selected III) of direct flotation, last time
The selected foam of direct flotation is exactly magnesite concentrate.
Performance detection
(1) trans- direct flotation open circuit technological process conventional in the prior art is respectively adopted and the embodiment of the present invention 1 is carried
The method of the raising magnesite flotation recovery rate of confession carries out certain high-silicon high calcium type magnesite flotation drop and lives together reason, the high-silicon high calcium
Content of MgO is 45.11%, SiO in the raw ore ore of type magnesite2Content is 2.71%, CaO content 1.47%；Using work
The floatation indicators comparison that industry testing inspection goes out the two is as shown in table 1 below：
Table 1：
As can be seen from Table 1：The method of raising magnesite flotation recovery rate that the embodiment of the present invention 1 is provided can obtain
Content of MgO 47.04%, SiO2The magnesite concentrate of content 0.29%, CaO content 0.57%, and the MgO rate of recovery reaches
76.82%, it can improve the concentrate MgO rate of recovery about compared with trans- direct flotation open circuit technological process conventional in the prior art
23.0%.
(2) trans- direct flotation open circuit technological process conventional in the prior art is respectively adopted and the embodiment of the present invention 1 is carried
The method of the raising magnesite flotation recovery rate of confession carries out certain high-silicon high calcium type magnesite flotation drop and lives together reason, the high-silicon high calcium
Content of MgO is 43.05%, SiO in the raw ore ore of type magnesite2Content is 4.14%, CaO content 2.91%；Using work
The floatation indicators comparison that industry testing inspection goes out the two is as shown in table 2 below：
Table 2：
As can be seen from Table 2：The method of raising magnesite flotation recovery rate that the embodiment of the present invention 1 is provided can obtain
Content of MgO 47.04%, SiO2The magnesite concentrate of content 0.28%, CaO content 0.53%, and the MgO rate of recovery reaches
75.66%, it can improve the concentrate MgO rate of recovery about compared with trans- direct flotation open circuit technological process conventional in the prior art
27.0%.
To sum up, the embodiment of the present invention can not only efficiently remove silico-calcium impurity, greatly improve magnesite flotation recycling
Rate, and can realize the application of low-grade magnesite flotation desilication drop calcium technique in the industry.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can readily occur in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (4)
- A kind of 1. method for improving magnesite flotation recovery rate, which is characterized in that include the following steps：Step A, by raw magnesite ore ore grinding to basic dissociation, so as to obtain crude ore pulp；Step B, reverse floatation agent is added in into crude ore pulp, and carries out Counterfloatating desiliconization operation；The Counterfloatating desiliconization operation Including first carrying out reverse flotation roughing once or twice, then the underflow of reverse flotation roughing is carried out once to the essence of reverse flotation three times Choosing, then by the selected foam of all or part of reverse flotation merge progress once or twice reverse flotation essence scan, reverse flotation The underflow that essence is scanned is selected back to reverse flotation roughing or first time reverse flotation；Step C, direct flotation medicament is added in into the selected underflow of last time reverse flotation and carries out processing of sizing mixing, and carry out direct flotation Calcium operation is dropped；The direct flotation drop calcium operation includes first carrying out direct flotation roughing once or twice, then to direct flotation roughing Underflow progress is once scanned to direct flotation twice, and selected to four direct flotations twice to the foam progress of direct flotation roughing, most A selected foam of direct flotation is exactly magnesite concentrate afterwards, and the selected underflow of first time direct flotation carries out once or twice just Flotation essence is scanned, and the foam that direct flotation essence is scanned is scanned back to direct flotation roughing or direct flotation, the selected bottom of remaining direct flotation One of operation before the foam sequence that stream and direct flotation are scanned returns.
- 2. the method according to claim 1 for improving magnesite flotation recovery rate, which is characterized in that in step, by water chestnut Magnesium green ore ore ore grinding is to basic dissociation, so as to obtain grinding fineness to account for 60~90wt% less than 0.074mm part mass Crude ore pulp.
- 3. the method according to claim 1 or 2 for improving magnesite flotation recovery rate, which is characterized in that by whole or portion The foam for dividing reverse flotation selected merges an only reverse flotation essence of progress and scans.
- 4. the method according to claim 1 or 2 for improving magnesite flotation recovery rate, which is characterized in that thick to direct flotation The underflow of choosing carries out a direct flotation and scans, and it is selected to carry out direct flotation three times to the foam of direct flotation roughing.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109225613A (en) * | 2018-09-27 | 2019-01-18 | 辽宁科技大学 | A kind of magnesite ore-dressing technique |
| CN109569891A (en) * | 2018-12-19 | 2019-04-05 | 沈阳有色金属研究院有限公司 | One kind is for compound flotation collector of magnesite Counterfloatating desiliconization and preparation method thereof |
| CN112007761A (en) * | 2019-10-09 | 2020-12-01 | 中蓝连海设计研究院有限公司 | Method for refining magnesite |
| CN114985094A (en) * | 2021-03-02 | 2022-09-02 | 营口盛海化工有限公司 | New technological process for magnesite dressing |
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| US3419140A (en) * | 1966-05-11 | 1968-12-31 | Basic Inc | Selective flotation of dolomite away from magnesite |
| CN1994580A (en) * | 2006-12-27 | 2007-07-11 | 沈阳铝镁设计研究院 | Silicon removing process for dressing low-grade magnesite |
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| CN102294296A (en) * | 2011-06-30 | 2011-12-28 | 中蓝连海设计研究院 | Floatation and enrichment process for silicon-calcium mass type fluorite ores |
| CN103537380A (en) * | 2013-10-28 | 2014-01-29 | 辽宁科技大学 | Reverse flotation, tailings cleaning and recleaning method of magnesite ore |
| WO2014179134A1 (en) * | 2013-04-30 | 2014-11-06 | Newmont Usa Limited | Method for processing mineral material containing acid-consuming carbonate and precious metal in sulfide minerals |
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| US3419140A (en) * | 1966-05-11 | 1968-12-31 | Basic Inc | Selective flotation of dolomite away from magnesite |
| CN1994580A (en) * | 2006-12-27 | 2007-07-11 | 沈阳铝镁设计研究院 | Silicon removing process for dressing low-grade magnesite |
| CN102189040A (en) * | 2011-01-26 | 2011-09-21 | 东北大学 | Method for carrying out flotation on high-silicon high-calcium low-grade magnesite step by step |
| CN102294296A (en) * | 2011-06-30 | 2011-12-28 | 中蓝连海设计研究院 | Floatation and enrichment process for silicon-calcium mass type fluorite ores |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109225613A (en) * | 2018-09-27 | 2019-01-18 | 辽宁科技大学 | A kind of magnesite ore-dressing technique |
| CN109569891A (en) * | 2018-12-19 | 2019-04-05 | 沈阳有色金属研究院有限公司 | One kind is for compound flotation collector of magnesite Counterfloatating desiliconization and preparation method thereof |
| CN112007761A (en) * | 2019-10-09 | 2020-12-01 | 中蓝连海设计研究院有限公司 | Method for refining magnesite |
| CN114985094A (en) * | 2021-03-02 | 2022-09-02 | 营口盛海化工有限公司 | New technological process for magnesite dressing |
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