CN102553701A - Method for producing high-quality titanium concentrates from phosphorated ilmenite by dephosphorization floatation - Google Patents
Method for producing high-quality titanium concentrates from phosphorated ilmenite by dephosphorization floatation Download PDFInfo
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- CN102553701A CN102553701A CN2012100480419A CN201210048041A CN102553701A CN 102553701 A CN102553701 A CN 102553701A CN 2012100480419 A CN2012100480419 A CN 2012100480419A CN 201210048041 A CN201210048041 A CN 201210048041A CN 102553701 A CN102553701 A CN 102553701A
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- flotation
- ilmenite
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Abstract
The invention discloses a method for producing high-quality titanium concentrates from phosphorated ilmenite by dephosphorization floatation, which belongs to the technical field of mineral separation and is capable of producing high-quality titanium concentrates with low phosphorous content. The method includes steps of producing floatation crude ore from phosphorated ilmenite by means of grinding, mixing the floatation crude ore to prepare ore pulp, and producing titanium concentrates from ore pulp by means of titanium flotation while dephosphorizing in floatation after mixing of floatation crude ore. The step of dephosphorizing in floatation after mixing of floatation crude ore is realized by adding dephosphorizing agent TP-1, sodium silicate and dephosphorizing agent TP-2 into ore pulp and then mixing the same and keeping the pH (potential of hydrogen) value of the ore pulp within the range from 8 to 10. The dephosphorized ore pulp can be used for producing titanium concentrates by means of titanium floatation. By adding the dephosphorizing agent TP-1, the sodium silicate and the dephosphorizing agent TP-2 to realize dephosphorization floatation, the problem of low recovery rate of titanium dioxide due to inhibitor added is avoided. In addition, the titanium concentrates produced by the method is low in phosphorous content, while high-efficiency recovery of titanium is realized.
Description
Technical field
The invention belongs to the technique of preparing field, be specifically related to the method that a kind of phosphorous ilmenite dephosphorization flotation obtains the high-quality ilmenite concentrate.
Background technology
The ilmenite floatation process mainly is containing TiO
2Lower mineral come enrichment through in flotation device, adding the floating agent sorting, thereby obtain TiO
2The ilmenite concentrate that content is higher.The ilmenite floatation process comprises that mainly technologies such as low intensity magnetic separation deferrization, high intensity magnetic separation (or gravity treatment) and ore grinding produce the flotation raw ore, then the flotation raw ore is sized mixing, is made ilmenite concentrate after the titanium flotation.
The ilmenite concentrate that phosphorous ilmenite is produced through the art methods flotation also contains harmful elements such as phosphorus, sulphur usually; Ilmenite concentrate is phosphorous >=and 0.05%; Particularly phosphorous >=0.10% will produce the product quality of next step titanium white powder and comparatively seriously influence, and then reduce the selling price and the minimizing market share of ilmenite concentrate.For guaranteeing product quality, when ilmenite raw ore sulfur-bearing was higher, the general employing added xanthate and foaming agent and floatingly selected behind the sulfide flotation ilmenite more in advance.If the ferrotianium raw ore phosphorous higher need adopt the ore dressing means make that phosphorus content is reduced in the ilmenite concentrate＜0.05%, at present, indivedual phosphorous ilmenite concentrate manufacturer adopts and adds inhibitor (like prodan etc.) in the ilmenite floatation process simultaneously; Phosphorus ore containing is passed through to suppress; Get in the ilmenite flotation tailing and drain, but this technology exists dephosphorization effect poor, does not often reach the requirement of phosphorous≤0.05%; The dephosphorization reagent cost is high; Simultaneously ilmenite flotation generation is had a strong impact on, cause the ilmenite recovering effect poor, increase the ilmenite concentrate production cost.
Therefore, take a kind of effective, economic dephosphorization beneficiation method to reduce the phosphorus content of ilmenite, can obtain the high-quality ilmenite concentrate, fully realize the efficient utilization of titanium resource.
Summary of the invention
Technical problem to be solved by this invention provides the method that a kind of phosphorous ilmenite dephosphorization flotation obtains the high-quality ilmenite concentrate.
The technical solution adopted for the present invention to solve the technical problems is: phosphorous ilmenite dephosphorization flotation obtains the method for high-quality ilmenite concentrate; Comprise that phosphorous ilmenite ore grinding produces the flotation raw ore; The flotation raw ore is sized mixing and is obtained ore pulp, and the flotation of ore pulp titanium makes the ilmenite concentrate step, also carries out the step of flotation dephosphorization after the flotation raw ore is sized mixing: in ore pulp, add Dephosphorising agent TP-1, waterglass and Dephosphorising agent TP-2 and stir; The pH value that makes ore pulp is carried out the flotation dephosphorization this moment between 8～10; Ore pulp behind the dephosphorization is used for the titanium flotation and makes ilmenite concentrate.
Wherein, phosphorous ilmenite is meant that phosphorus content is greater than 0.05% ilmenite.
Wherein, The TP-1 of Dephosphorising agent described in the said method belongs to industrial alkaloids; At least a in main carbonated sodium, sodium acid carbonate or the NaOH derives from Milton (Beijing) mining and metallurgy technology Co., Ltd, is mainly used in the pH value of adjustment ore pulp and mineral surfaces is carried out physics chemical action.
Wherein, the addition of Dephosphorising agent TP-1 is 0.2～0.3% of a flotation raw ore gross weight in the said method.
Wherein, the addition of waterglass is 0.1～0.2% of a flotation raw ore gross weight in the said method.
Wherein, the TP-2 of Dephosphorising agent described in the said method belongs to a kind of fatty acid collecting agent that flotation is used, and mainly contains C14～C18 saturated fatty acid, derives from Milton (Beijing) mining and metallurgy technology Co., Ltd, is mainly used in the flotation phosphate mineral.
Wherein, the addition of Dephosphorising agent TP-2 is 0.03～0.05% of a flotation raw ore gross weight in the said method.
Wherein, the step of flotation dephosphorization is in the said method: the flotation raw ore is sized mixing, and the back adds Dephosphorising agent TP-1 earlier, waterglass stirs, and adds Dephosphorising agent TP-2 again and stirs, and the pH value that makes ore pulp is carried out the flotation dephosphorization this moment between 8～10.
Wherein, also ore pulp is concentrated behind the flotation dephosphorization in the said method, thickener underflow is used for the titanium flotation and makes ilmenite concentrate.
Wherein, also comprise the step of floatation desulphurization in the said method behind the flotation dephosphorization, the ore pulp after the desulfurization is used for the titanium flotation and makes ilmenite concentrate.
Further, the medicament of floatation desulphurization adding is xanthate and foaming agent.
Further again, also ore pulp is concentrated behind the floatation desulphurization, thickener underflow is used for the titanium flotation and makes ilmenite concentrate.
The invention has the beneficial effects as follows: the inventive method adds Dephosphorising agent TP-1, waterglass and Dephosphorising agent TP-2 before the ilmenite concentrate and carries out the flotation dephosphorization through making in the titanium flotation, can prepare the ilmenite concentrate of high-quality, and ilmenite concentrate contains TiO
2In the time of>=46%, the phosphorus content of ilmenite concentrate is less than 0.05%, and sulfur content is less than 0.18%.The inventive method has also solved simultaneously through adding the low problem of the titanium dioxide rate of recovery that inhibitor causes when the flotation; Make the titanium dioxide rate of recovery improve; Can improve 5 percentage points than art methods, fully realize the efficient utilization of titanium resource.
The specific embodiment
Through the specific embodiment the present invention is described further below.
Phosphorous ilmenite dephosphorization flotation obtains the method for high-quality ilmenite concentrate; Comprise that phosphorous ilmenite ore grinding produces the flotation raw ore; The flotation raw ore is sized mixing and is obtained ore pulp, and the flotation of ore pulp titanium makes the ilmenite concentrate step, also carries out the step of flotation dephosphorization after the flotation raw ore is sized mixing: in ore pulp, add Dephosphorising agent TP-1, waterglass and Dephosphorising agent TP-2 and stir; The pH value that makes ore pulp is carried out the flotation dephosphorization this moment between 8～10; Ore pulp behind the dephosphorization is used for the titanium flotation and makes ilmenite concentrate.
The inventive method increases the step of a dephosphorization flotation; Be about to of the prior artly when flotation, add the method that inhibitor reduces the ilmenite concentrate phosphorus content and be split as two steps; The one, the flotation dephosphorization is according to conventional method for floating the ilmenite raw ore to be carried out flotation then.Pass through in ore pulp, to add Dephosphorising agent TP-1, waterglass and Dephosphorising agent TP-2 during the inventive method flotation dephosphorization; Effectively the phosphorus in the ilmenite is removed, avoided the low problem of the titanium dioxide rate of recovery that causes through the inhibition that the interpolation inhibitor produces ilmenite.The high-quality ilmenite concentrate phosphorus content that obtains with the inventive method is low, realizes the high efficiente callback utilization of titanium resource simultaneously.
Wherein, The TP-1 of Dephosphorising agent described in the said method belongs to industrial alkaloids; At least a in main carbonated sodium, sodium acid carbonate or the NaOH derives from Milton (Beijing) mining and metallurgy technology Co., Ltd, is mainly used in the pH value of adjustment ore pulp and mineral surfaces is carried out physics chemical action.
Too much or the very few effect that all can influence dephosphorization of the addition of Dephosphorising agent TP-1, therefore, preferred, better in order to make dephosphorization effect, the addition of Dephosphorising agent TP-1 is 0.2～0.3% of a flotation raw ore gross weight in the said method.In like manner, better in order to make dephosphorization effect, the addition of waterglass is 0.1～0.2% of a flotation raw ore gross weight in the said method.In the specific implementation; Can earlier Dephosphorising agent TP-1 and waterglass be configured to 5%～10% the aqueous solution respectively; And then join respectively in the flotation raw ore ore pulp, help Dephosphorising agent TP-1 and waterglass like this and be dispersed in the ore pulp, further improve the effect of dephosphorization.
Wherein, the TP-2 of Dephosphorising agent described in the said method belongs to a kind of fatty acid collecting agent that flotation is used, and mainly contains C14～C18 saturated fatty acid, derives from Milton (Beijing) mining and metallurgy technology Co., Ltd, is mainly used in the flotation phosphate mineral.
Preferably, better in order to make dephosphorization effect, the addition of Dephosphorising agent TP-2 is 0.03～0.05% of a flotation raw ore gross weight in the said method.In the specific implementation, can earlier Dephosphorising agent TP-2 be configured to 5%～10% the aqueous solution, and then join in the flotation raw ore ore pulp, help Dephosphorising agent TP-2 like this and be dispersed in the ore pulp, further improve the effect of dephosphorization.
Preferably, in the said method, in order to improve the effect of flotation dephosphorization; The step of flotation dephosphorization is in the said method: the flotation raw ore is sized mixing, and the back adds Dephosphorising agent TP-1 earlier, waterglass stirs; Add Dephosphorising agent TP-2 again and stir, the pH value that makes ore pulp is carried out the flotation dephosphorization this moment between 8～10.
Preferably, also ore pulp is concentrated behind the flotation dephosphorization in the said method, thickener underflow (being ore pulp behind the dephosphorization) is used for the titanium flotation and makes ilmenite concentrate.Concentrate the feed ore concentration that to stablize the titanium flotation and the reagent consumption amount that reduces the titanium flotation.In the specific implementation, can decide, if the weight concentration of mineral＞35% can not concentrate in the ore pulp according to the pulp density situation behind the flotation dephosphorization.
Phosphorous ilmenite all can association contain sulfur mineral usually; The too high meeting of sulfur content has a strong impact on the quality of ilmenite concentrate, back in time with removal of sulphur, preferred at the flotation dephosphorization; Also comprise the step of floatation desulphurization in the said method behind the flotation dephosphorization, the ore pulp after the desulfurization is used for the titanium flotation and makes ilmenite concentrate.In the specific implementation, can decide, if ilmenite sulfur-bearing≤0.18% o'clock can not carry out floatation desulphurization according to raw material sulfur-bearing situation.Further, the medicament of floatation desulphurization adding is xanthate and foaming agent.
Further again, also ore pulp is concentrated behind the floatation desulphurization, thickener underflow (promptly remove p and s after ore pulp) is used for the titanium flotation and makes ilmenite concentrate.Concentrate the feed ore concentration that to stablize the titanium flotation and the reagent consumption amount that reduces the titanium flotation.
Through embodiment the specific embodiment of the invention is described further below, but does not therefore limit the present invention among the described scope of embodiment.
Embodiment one
Certain ore dressing plant prepares the high-quality ilmenite concentrate with the inventive method.Phosphorous ilmenite is through the magnetic separation deferrization, and ore grinding makes the flotation raw ore then, and the flotation raw ore contains TiO
219%, phosphorous 0.15%, sulfur-bearing 0.5%.
Get 360 tons in flotation raw ore; Add entry; The ratio that makes ore pulp chats and water is 1: 1, stirs to obtain the raw ore ore pulp, will be mixed with 10% aqueous solution from 970kg Dephosphorising agent TP-1 and the 360kg waterglass that Milton (Beijing) mining and metallurgy technology Co., Ltd sells; To pass through the water stirring and dissolving of heating again from the 160kg Dephosphorising agent TP-2 that Milton (Beijing) mining and metallurgy technology Co., Ltd sells; Then Dephosphorising agent TP-1, waterglass and Dephosphorising agent TP-2 are made an addition in the raw ore ore pulp and stir, the pH value of system controls to about 9, carries out the ore dressing of flotation dephosphorization.
The flotation raw ore concentrates ore pulp through small-sized swash plate thickener behind the flotation dephosphorization, and thickener underflow is as titanium flotation raw ore.After carrying out the titanium flotation operation according to common process, finally obtain 112 tons of high-quality ilmenite concentrates, ilmenite concentrate TiO
2Grade is average 46.5%, phosphorous 0.04%, sulfur-bearing 0.18%, the titanium dioxide rate of recovery 76.14%.
Embodiment two
Certain ore dressing plant prepares the high-quality ilmenite concentrate with the inventive method.Phosphorous ilmenite is through the magnetic separation deferrization, and ore grinding makes the flotation raw ore then, and the flotation raw ore contains TiO
220%, phosphorous 0.28%, sulfur-bearing 0.4%.
480 tons in flotation raw ore; Add the water stirring and obtain the raw ore ore pulp; The ratio of ore pulp chats and water is 1: 1; The Dephosphorising agent TP-1 that 1300kg Milton (Beijing) mining and metallurgy technology Co., Ltd is sold is mixed with 10% the aqueous solution and 480kg waterglass and is mixed with 10% the aqueous solution and makes an addition in the raw ore ore pulp and stir, and the aqueous solution of the Dephosphorising agent TP-1 that 210kg Milton (Beijing) mining and metallurgy technology Co., Ltd is sold through heating makes an addition in the raw ore ore pulp and stirs; The pH value of system controls to about 9, carries out the dephosphorization ore dressing, adds desulfurization medicament butyl xanthate 18kg and pine camphor oils foaming agent 9kg and flotation behind the dephosphorization again.
The flotation raw ore concentrates ore pulp through small-sized swash plate thickener after flotation dephosphorization, desulfurization, and thickener underflow is as titanium flotation raw ore.After carrying out the titanium flotation operation according to common process, finally obtain 170 tons of high-quality ilmenite concentrates, ilmenite concentrate TiO
2Grade is average 47.20%, phosphorous 0.035%, sulfur-bearing 0.15%, the titanium dioxide rate of recovery 83.58%.
Embodiment three
Certain ore dressing plant prepares the high-quality ilmenite concentrate with the inventive method.Phosphorous ilmenite is through the magnetic separation deferrization, and ore grinding makes the flotation raw ore then, and the flotation raw ore contains TiO
224%, phosphorous 0.3%, sulfur-bearing 0.35%.
Get 300 tons in flotation raw ore; Add the water stirring and obtain the raw ore ore pulp; The ratio of ore pulp chats and water is 1: 1, and the Dephosphorising agent TP-1 that 850kg Milton (Beijing) Minerals Tech Inc is sold is mixed with 10% the aqueous solution respectively through heating and 320kg waterglass and makes an addition in the raw ore ore pulp and stir; Again 140kg Dephosphorising agent TP-2 is mixed with 10% the aqueous solution and adds in the ore pulp and stir, the pH value of system controls to about 9, carries out the dephosphorization ore dressing, adds desulfurization medicament butyl xanthate 15kg and pine camphor oils foaming agent 7.5kg and flotation behind the dephosphorization again.
The flotation raw ore concentrates ore pulp through small-sized swash plate thickener after flotation dephosphorization, desulfurization, and thickener underflow is as titanium flotation raw ore.After carrying out the titanium flotation operation according to common process, finally obtain 130 tons of high-quality ilmenite concentrates, ilmenite concentrate TiO
2Grade is average 46.8%, phosphorous 0.048%, sulfur-bearing 0.12%, the titanium dioxide rate of recovery 84.5%.
Comparative Examples one
Certain ore dressing plant is with " strong magnetic-flotation " prepared ilmenite concentrate.Phosphorous ilmenite is through the magnetic separation deferrization, and ore grinding makes the flotation raw ore then, and the flotation raw ore contains TiO
219%, phosphorous 0.15%, sulfur-bearing 0.5%.The flotation raw ore adds floating agent according to common process for 360 tons and carries out the titanium flotation, makes 104 tons of ilmenite concentrates, ilmenite concentrate TiO
2Grade is average 46.0%, phosphorous 0.25%, sulfur-bearing 0.58%, the titanium dioxide rate of recovery 69.94%.
Can find out that through embodiment and Comparative Examples utilize the inventive method can make the titanium ore deposit of high-quality, ilmenite concentrate contains TiO
2In the time of>=46%, the phosphorus content of ilmenite concentrate is less than 0.05%, and sulfur content is less than 0.18%.Also improved simultaneously the rate of recovery of titanium dioxide, utilized the rate of recovery that prior art makes ilmenite concentrate usually all about 70%, and can both reach more than 75%, fully realized the efficient utilization of titanium resource with the inventive method rate of recovery.
Claims (9)
1. phosphorous ilmenite dephosphorization flotation obtains the method for high-quality ilmenite concentrate; Comprise that phosphorous ilmenite ore grinding produces the flotation raw ore; The flotation raw ore is sized mixing and is obtained ore pulp, and the flotation of ore pulp titanium makes the ilmenite concentrate step, it is characterized in that also carrying out after the flotation raw ore is sized mixing the step of flotation dephosphorization: in ore pulp, add Dephosphorising agent TP-1, waterglass and Dephosphorising agent TP-2 and stir; The pH value that makes ore pulp is carried out the flotation dephosphorization this moment between 8～10; Ore pulp behind the dephosphorization is used for the titanium flotation and makes ilmenite concentrate.
2. phosphorous ilmenite dephosphorization flotation according to claim 1 obtains the method for high-quality ilmenite concentrate, and it is characterized in that: the addition of Dephosphorising agent TP-1 is 0.2～0.3% of a flotation raw ore gross weight.
3. phosphorous ilmenite dephosphorization flotation according to claim 1 obtains the method for high-quality ilmenite concentrate, and it is characterized in that: the addition of waterglass is 0.1～0.2% of a flotation raw ore gross weight.
4. phosphorous ilmenite dephosphorization flotation according to claim 1 obtains the method for high-quality ilmenite concentrate, and it is characterized in that: the addition of Dephosphorising agent TP-2 is 0.03～0.05% of a flotation raw ore gross weight.
5. phosphorous ilmenite dephosphorization flotation according to claim 1 obtains the method for high-quality ilmenite concentrate; It is characterized in that: the step of flotation dephosphorization is: the flotation raw ore is sized mixing, and the back adds Dephosphorising agent TP-1 earlier, waterglass stirs; Adding Dephosphorising agent TP-2 again stirs; The pH value that makes ore pulp is carried out the flotation dephosphorization this moment between 8～10.
6. according to the method for the described phosphorous ilmenite dephosphorization flotation acquisition high-quality ilmenite concentrate of arbitrary claim in the claim 1 to 5, it is characterized in that: also ore pulp is concentrated behind the flotation dephosphorization, thickener underflow is used for the titanium flotation and makes ilmenite concentrate.
7. according to the method for the described phosphorous ilmenite dephosphorization flotation acquisition high-quality ilmenite concentrate of arbitrary claim in the claim 1 to 5, it is characterized in that: also comprise the step of floatation desulphurization behind the flotation dephosphorization, the ore pulp after the desulfurization is used for the titanium flotation and makes ilmenite concentrate.
8. phosphorous ilmenite dephosphorization flotation according to claim 7 obtains the method for high-quality ilmenite concentrate, it is characterized in that: the medicament that floatation desulphurization adds is xanthate and foaming agent.
9. phosphorous ilmenite dephosphorization flotation according to claim 8 obtains the method for high-quality ilmenite concentrate, and it is characterized in that: also ore pulp is concentrated behind the floatation desulphurization, thickener underflow is used for the titanium flotation and makes ilmenite concentrate.
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Cited By (5)
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| CN104117424A (en) * | 2014-07-24 | 2014-10-29 | 攀钢集团矿业有限公司 | Beneficiation method for selecting ilmenite concentrate through ilmenite |
| CN104437858A (en) * | 2014-11-24 | 2015-03-25 | 武汉中地西能科技有限公司 | Dephosphorizing method for high phosphorus magnetite ore |
| CN107362900A (en) * | 2017-07-21 | 2017-11-21 | 云南中钛科技有限公司 | The technique that a kind of sand ilmenite picks up ilmenite concentrate and iron ore concentrate |
| CN109225653A (en) * | 2018-07-19 | 2019-01-18 | 昆明理工大学 | A kind of beneficiation method of high phosphorus hematite-limonite stone dephosphorization |
| CN113713963A (en) * | 2021-07-29 | 2021-11-30 | 四川谨而睿科技有限公司 | Method for recovering titanium concentrate from rough sulfide ore in ilmenite recovery process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117424A (en) * | 2014-07-24 | 2014-10-29 | 攀钢集团矿业有限公司 | Beneficiation method for selecting ilmenite concentrate through ilmenite |
| CN104437858A (en) * | 2014-11-24 | 2015-03-25 | 武汉中地西能科技有限公司 | Dephosphorizing method for high phosphorus magnetite ore |
| CN107362900A (en) * | 2017-07-21 | 2017-11-21 | 云南中钛科技有限公司 | The technique that a kind of sand ilmenite picks up ilmenite concentrate and iron ore concentrate |
| CN109225653A (en) * | 2018-07-19 | 2019-01-18 | 昆明理工大学 | A kind of beneficiation method of high phosphorus hematite-limonite stone dephosphorization |
| CN113713963A (en) * | 2021-07-29 | 2021-11-30 | 四川谨而睿科技有限公司 | Method for recovering titanium concentrate from rough sulfide ore in ilmenite recovery process |
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Application publication date: 20120711 |