CN103691574B - A kind of preparation method of dolomite inhibitor and application thereof - Google Patents
A kind of preparation method of dolomite inhibitor and application thereof Download PDFInfo
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- CN103691574B CN103691574B CN201310697982.XA CN201310697982A CN103691574B CN 103691574 B CN103691574 B CN 103691574B CN 201310697982 A CN201310697982 A CN 201310697982A CN 103691574 B CN103691574 B CN 103691574B
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Abstract
A kind of preparation method of dolomite inhibitor, comprise the steps: first by sulfuric acid, hydrochloric acid and water sulfuric acid in mass ratio: hydrochloric acid: water=2 ~ 7:1 ~ 2:8 ~ 13 are mixed to get solution 1, then benzoic acid or nitrobenzene in mass ratio=1 ~ 3:3 ~ 10 are added in solution 1, be stirred to and dissolve to obtain solution 2; Then water-soluble sulfate or sulphite in mass ratio=1 ~ 2:3 ~ 7 are added in solution 2, controlling solution 2 temperature is 40 ~ 50 DEG C, stirring reaction keeps 6 ~ 7h to obtain solution 3, solution 3 suction filtration is obtained crystalloid dope, finally that crystalloid dope is dry under 60 ~ 75 DEG C of conditions, be described dolomite inhibitor.Adopt the present invention to suppress dolomite, improve fluorite concentrate grade.
Description
One, technical field
The present invention relates to the inhibitor of dolomite, particularly in fluorite and dolomite FLOTATION SEPARATION process, need improve preparation method and the application thereof of a kind of dolomite inhibitor of fluorite concentrate grade.
Two, background technology
In fluorite deposit, fluorite general and lime stone, quartz and other a small amount of impure mineral association, for the recovery of this kind of fluorite, current technique of preparing is quite ripe.But containing a large amount of dolomite mineral in some fluorite deposits, this kind of fluorite mineral are difficult to be separated at present, calcium ion on the one hand in white stone ore thing is close with the calcium ion character in fluorite mineral, on the other hand, in dolomite mineral, the activity of magnesium ion is very strong, add the interference of other impure mineral, cause its FLOTATION SEPARATION difficulty; Again due to when ore grinding other impure mineral easily become very thin particle, formed sludge, affect the recovery of fluorite, not only make flotation flowsheet complex structure, make that with medicament is many, production cost is high, fluorite concentrate content is not high, limits the development and utilization of this kind of fluorite.
Three, summary of the invention
The object of the present invention is to provide a kind of preparation method and application thereof of dolomite inhibitor, prepared inhibitor can suppress dolomite in fluorite, improves fluorite concentrate product.
The present invention achieves the above object by the following technical solutions: a kind of preparation method of dolomite inhibitor, comprise the steps: first by sulfuric acid, hydrochloric acid and water sulfuric acid in mass ratio: hydrochloric acid: water=2 ~ 7:1 ~ 2:8 ~ 13 are mixed to get solution 1, then benzoic acid or nitrobenzene in mass ratio=1 ~ 3:3 ~ 10 are added in solution 1, be stirred to and dissolve to obtain solution 2; Then water-soluble sulfate or sulphite in mass ratio=1 ~ 2:3 ~ 7 are added in solution 2, controlling solution 2 temperature is 40 ~ 50 DEG C, stirring reaction keeps 6 ~ 7h to obtain solution 3, solution 3 suction filtration is obtained crystalloid dope, finally that crystalloid dope is dry under 60 ~ 75 DEG C of conditions, be described dolomite inhibitor.
During flotation, slurry pH is 9.5 ~ 10; In floatation process, after being dissociated by ore ore grinding to mineral monomer, add described inhibitor, collecting agent.
The total consumption of medicament is: 500 ~ 800g/t.
Concrete advantage of the present invention is:
1, adopt the present invention to suppress dolomite, improve fluorite concentrate grade.
2, dosing of the present invention is few.
Four, detailed description of the invention
Below by way of specific embodiment, technical scheme of the present invention is further described.
Embodiment 1
An example of the preparation method of dolomite inhibitor of the present invention, comprises the following steps:
First by sulfuric acid, hydrochloric acid and water sulfuric acid in mass ratio: hydrochloric acid: water=2:1:8 is mixed to get solution 1, then by benzoic acid or nitrobenzene in mass ratio=1:3 adds in solution 1, be stirred to and dissolve to obtain solution 2; Then by water-soluble sulfate or sulphite in mass ratio=1:3 adds in solution 2, controlling solution 2 temperature is 40 DEG C, stirring reaction keeps 6h to obtain solution 3, solution 3 suction filtration is obtained crystalloid dope, finally that crystalloid dope is dry under 60 DEG C of conditions, be described dolomite inhibitor.
Embodiment 2
Another example of the preparation method of dolomite inhibitor of the present invention, comprises the following steps:
First by sulfuric acid, hydrochloric acid and water sulfuric acid in mass ratio: hydrochloric acid: water=7:2:13 is mixed to get solution 1, then by benzoic acid or nitrobenzene in mass ratio=3:10 adds in solution 1, be stirred to and dissolve to obtain solution 2; Then by water-soluble sulfate or sulphite in mass ratio=2:7 adds in solution 2, controlling solution 2 temperature is 50 DEG C, stirring reaction keeps 7h to obtain solution 3, solution 3 suction filtration is obtained crystalloid dope, finally that crystalloid dope is dry under 75 DEG C of conditions, be described dolomite inhibitor.
Embodiment 3
The present embodiment is the application example of described dolomite inhibitor in fluorite and dolomite FLOTATION SEPARATION.
1, raw mineral materials:
In raw mineral materials used, the content of fluorite is 63.08%, dolomite content is 27.12%, calcium carbonate content is 2.56%, quartz content is 5.57%, show through material phase analysis, ore mainly exists with fluorite, dolomite, carbonate and quartzy form, separately has a small amount of shale mineral.
2, regime of agent and operating condition: adjust pH values of pulp to 9.5 ~ 10, by inhibitor 500g/t with sodium carbonate, enuatrol 550g/t dosing is tested, result shows to adopt above technique and agentia condition can effectively by fluorite and dolomite FLOTATION SEPARATION, under being 63.08% condition to ore deposit fluorite content, through one roughing scan for four times and six times selected, flotation concentrate fluorite content can reach 97.15%, and the rate of recovery reaches 79.66%.
Embodiment 4
The present embodiment is the Another Application example of described dolomite inhibitor in fluorite and dolomite FLOTATION SEPARATION.
1, raw mineral materials
In raw mineral materials used, the content of fluorite is 67.73%, dolomite content is 20.64%, calcium carbonate content is 1.40%, quartz content is 6.93%, show through material phase analysis, ore mainly exists with fluorite, dolomite, carbonate and quartzy form, separately has a small amount of shale mineral.
2, regime of agent and operating condition: adjust pH values of pulp to 9.5 ~ 10, by inhibitor 800g/t with sodium carbonate, enuatrol 550g/t dosing is tested, result shows to adopt above technique and agentia condition can effectively by fluorite and dolomite FLOTATION SEPARATION, under being 67.73% condition to ore deposit fluorite content, through one roughing scan for four times and six times selected, flotation concentrate fluorite content can reach 97.70%, and the rate of recovery reaches 82.43%.
Claims (3)
1. the preparation method of a dolomite inhibitor, it is characterized in that, comprise the steps: first by sulfuric acid, hydrochloric acid and water sulfuric acid in mass ratio: hydrochloric acid: water=2 ~ 7:1 ~ 2:8 ~ 13 are mixed to get solution 1, then benzoic acid or nitrobenzene in mass ratio=1 ~ 3:3 ~ 10 are added in solution 1, be stirred to and dissolve to obtain solution 2; Then water-soluble sulfate or sulphite in mass ratio=1 ~ 2:3 ~ 7 are added in solution 2, controlling solution 2 temperature is 40 ~ 50 DEG C, stirring reaction keeps 6 ~ 7h to obtain solution 3, solution 3 suction filtration is obtained crystalloid dope, finally that crystalloid dope is dry under 60 ~ 75 DEG C of conditions, be described dolomite inhibitor.
2. the application of dolomite inhibitor according to claim 1 in fluorite and dolomite FLOTATION SEPARATION, is characterized in that, during flotation, slurry pH is 9.5 ~ 10; In floatation process, after being dissociated by ore ore grinding to mineral monomer, add described inhibitor, collecting agent,
The total consumption of inhibitor is: 500 ~ 800g/t.
3. the application of dolomite inhibitor according to claim 2 in fluorite and dolomite FLOTATION SEPARATION, is characterized in that, during use, described inhibitor is first mixed with the aqueous solution that mass percentage concentration is 3 ~ 5%.
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| CN201310697982.XA CN103691574B (en) | 2013-12-17 | 2013-12-17 | A kind of preparation method of dolomite inhibitor and application thereof |
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| CN103691574B true CN103691574B (en) | 2015-09-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104437888A (en) * | 2014-11-21 | 2015-03-25 | 广西大学 | Method for preparing zinc-sulfur mineral depressor |
| CN106492994B (en) * | 2016-11-02 | 2018-11-20 | 广西大学 | A kind of preparation method of olivine mineral inhibitor |
| CN106733213B (en) * | 2016-12-07 | 2018-11-20 | 广西大学 | A kind of preparation method of fluorite mineral inhibitor |
| CN108160336B (en) * | 2017-12-26 | 2020-11-03 | 中国地质科学院矿产综合利用研究所 | Tellurium-bismuth ore flotation inhibitor and preparation method and application thereof |
| CN108654830B (en) * | 2018-04-28 | 2021-01-05 | 武汉科技大学 | Method for recycling fluorite and dolomite from dolomite magnetite magnetic separation tailings |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4636303A (en) * | 1985-10-07 | 1987-01-13 | Tennessee Valley Authority | Beneficiation of dolomitic phosphate ores |
| CN1005258B (en) * | 1987-03-07 | 1989-09-27 | 化学工业部化工矿山设计研究院 | Preparation method of sulfomethylated derivative of lignin calcium sulfonate, a new dolomite deressant for phosphorus mineral floatation |
| CN102357426B (en) * | 2011-08-03 | 2014-10-29 | 西北矿冶研究院 | Inhibitor for fluorite ore siliceous mineral and calcium carbonate mineral |
| CN103056035A (en) * | 2012-11-15 | 2013-04-24 | 中国海洋石油总公司 | Carbonate inhibitor and preparation method and application thereof |
| CN103341414A (en) * | 2013-06-26 | 2013-10-09 | 烟台市富林矿山机械有限公司 | Inhibitor for beneficiation and manufacturing method for inhibitor |
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