CN101972707B - Preparation method and application of pyrite inhibitor - Google Patents
Preparation method and application of pyrite inhibitor Download PDFInfo
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- CN101972707B CN101972707B CN2010102756725A CN201010275672A CN101972707B CN 101972707 B CN101972707 B CN 101972707B CN 2010102756725 A CN2010102756725 A CN 2010102756725A CN 201010275672 A CN201010275672 A CN 201010275672A CN 101972707 B CN101972707 B CN 101972707B
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Abstract
The invention discloses a method for preparing a pyrite inhibitor, which comprises the following steps of: adding 14 to 16g of paranitroaniline into 120 to 150ml of 20 volume percent sulfuric acid solution, heating for dissolution, cooling to the temperature of 10 DEG C in an ice bath, and slowly adding 25 to 30 ml of 25 mass percent solution of sodium nitrite to prepare a product 1 at the temperature of 10 DEG C; preparing 12 to 15g of 4,4'-diamidobenzene sulphonamide and 15 to 20ml of 1mol/L hydrochloric acid into solution and cooling to the temperature of 10 DEG C in the ice bath, and coupling with the product 1 under the condition of a pH value of 9 to 10 so as to prepare a product 2; and coupling the product 2 with 15 to 20ml of 1mol/L m-phenylenediamine under the condition of a pH value of 9 to 10 so as to prepare black water-soluble powder, namely the pyrite inhibitor. The inhibitor has good inhibitory action on pyrite, no influence on golden or silver ore in lead ore, low consumption and no toxin or pollution.
Description
One, technical field
The present invention relates to a kind of preparation method of troilite thing inhibitor, be applicable to that the plumbous sulfur mineral that contains gold or silver in the vulcanized lead mineral separates, and obtains to contain gold or silver lead ore concentrate.
Two, background technology
In plumbous sulfur mineral FLOTATION SEPARATION process, the general employing adds a large amount of lime to press down sulphur as the inhibitor of troilite thing floating plumbous, thereby plumbous sulphur content is left, and obtains lead concentrate; But when containing gold or silver in the lead minerals; Can not make troilite thing inhibitor with lime, this is because in floatation process, and lime is to containing gold or the silver mineral inhibitory action is apparent in view; Gold or silver are suppressed inevitably; Lose in mine tailing, so not only make resource fail to obtain fully comprehensive the recovery, also reduced the income of enterprise.
Three, summary of the invention
The object of the present invention is to provide a kind of preparation method of troilite thing inhibitor, the troilite thing inhibitor that is prepared into this method can suppress the troilite thing, and gold in the lead minerals or silver are not produced inhibitory action, and gold or silver are enriched in the lead concentrate.
The present invention adopts following technical scheme to achieve the above object: a kind of preparation method of troilite thing inhibitor; Comprise the steps: that it is in 20% sulfuric acid solution that 14～16g paranitroanilinum is joined 120～150ml volumetric concentration; Heating makes its dissolving; In ice bath, be cooled to 10 ℃ again; Under this temperature, slowly add 25～30ml mass percentage concentration and be 25% sodium nitrite solution and obtain product 1,12～15g 4,4 '-diaminobenzene sulfonanilide and 15～20ml1mol/L hydrochloric acid are mixed with solution and in ice bath, are cooled to 10 ℃; Obtain product 2 with product 1 coupling under pH9～10 conditions, get black powder soluble in water to product 2 and the coupling under pH10～11 conditions of 15～20ml1mol/L m-phenylene diamine (MPD) and be said troilite thing inhibitor.
The application of said troilite thing inhibitor in plumbous sulphur associated mineral FLOTATION SEPARATION; After earlier ore ore grinding to mineral monomer being dissociated; Using sodium carbonate to transfer slurry pH is 8～9; In the floatation process, add said troilite thing inhibitor by 250～350g/t, and then add 100～150g/t diethyldithiocarbamate as plumbous collecting agent and 80～100g/t2 oil as foaming agent.
During use, earlier said troilite thing inhibitor being mixed with mass percentage concentration is 1～2% the aqueous solution.
Concrete advantage of the present invention is:
Said troilite thing inhibitor has the good restraining effect to the troilite thing, and gold in the lead minerals or silver mineral are not produced inhibitory action, and dosing is few, nontoxic pollution-free.
Four, the specific embodiment
Below through specific embodiment technical scheme of the present invention is further described.
Embodiment 1
A kind of preparation method's of troilite thing inhibitor a instance may further comprise the steps:
It is in 20% sulfuric acid solution that the 14g paranitroanilinum is joined the 120ml volumetric concentration, and heating makes its dissolving, in ice bath, is cooled to 10 ℃ again, under this temperature, slowly adds the 25ml mass percentage concentration and is 25% sodium nitrite solution and obtain product 1.
With 12g 4; 4 '-diaminobenzene sulfonanilide and 15ml1mol/L hydrochloric acid is mixed with solution and in ice bath, is cooled to 10 ℃; Obtain product 2 with product 1 coupling under the pH9 condition, get black powder soluble in water to product 2 and the coupling under the pH10 condition of 15ml1mol/L m-phenylene diamine (MPD) and be said inhibitor.
Embodiment 2
Another instance of the preparation method of troilite thing inhibitor according to the invention; May further comprise the steps: it is in 20% sulfuric acid solution that the 16g paranitroanilinum is joined the 150ml volumetric concentration; Heating makes its dissolving; In ice bath, be cooled to 10 ℃ again, under this temperature, slowly add the 30ml mass percentage concentration and be 25% sodium nitrite solution and obtain product 1.
With 15g 4; 4 '-diaminobenzene sulfonanilide and 20ml1mol/L hydrochloric acid is mixed with solution and in ice bath, is cooled to 10 ℃; Obtain product 2 with product 1 coupling under the pH10 condition, get black powder soluble in water to product 2 and the coupling under the pH11 condition of 20ml1mol/L m-phenylene diamine (MPD) and be said inhibitor.
Embodiment 3
Troilite thing inhibitor the application example in plumbous sulphur FLOTATION SEPARATION of present embodiment for adopting embodiment 1 or 2 to be prepared into.
1, raw mineral materials:
Raw mineral materials is for containing gold sulfuration lead ore, wherein leaded 5.34%, sulphur 7.62%, golden 1.56g/t, and material phase analysis shows that lead minerals mainly exists with the galena form, other has a small amount of bournonite; Sulfur mineral mainly exists with the pyrite form, and other has a small amount of magnetic iron ore, and gold is distributed in the lead minerals.
2, regime of agent and operating condition: after earlier ore ore grinding to mineral monomer being dissociated, using sodium carbonate to transfer slurry pH is 8～9, scans for twice and the technological process of triple cleaning is carried out plumbous sulphur content and left by one roughing; Add the said troilite thing of 100g/t inhibitor during one roughing, and then add the 70g/t diethyldithiocarbamate as plumbous collecting agent and 60g/t2 oil as foaming agent, scan the said troilite thing inhibitor 50g/t of employing twice; Diethyldithiocarbamate 20g/t; No. 2 oily 20g/t, triple cleaning adopts said troilite thing inhibitor 100g/t, has carried out 150t/d industry expanding test in a year; Giving under ore deposit grade lead 5.34%, sulphur 7.62%, the golden 1.56g/t condition; Obtain the leaded plumbous Gold Concentrate under Normal Pressure that is 57.21%, contains golden 16.30g/t%, lead recovery reaches 88.72%, and gold recovery reaches 86.52%.
Embodiment 4
Troilite thing inhibitor the Another Application instance in plumbous sulphur FLOTATION SEPARATION of present embodiment for adopting embodiment 1 or 2 to be prepared into.
1, raw mineral materials:
Raw mineral materials is an argentiferous sulfuration lead ore, wherein leaded 3.79%, sulphur 8.27%, silver-colored 50.24g/t, and material phase analysis shows that lead minerals is main with jamesonite, other has a small amount of galena; Sulfur mineral is main with pyrite, and other has a small amount of mispickel, and silver is distributed in the lead minerals.
2, regime of agent and operating condition: after earlier ore ore grinding to mineral monomer being dissociated; Using sodium carbonate to transfer slurry pH is 8～9, scans for twice and the technological process of triple cleaning is carried out plumbous sulphur content and left by one roughing, adds the said troilite thing of 150g/t inhibitor during one roughing; And then add the 100g/t diethyldithiocarbamate as plumbous collecting agent and 70g/t2 oil as foaming agent; Scan for twice and adopt said troilite thing inhibitor 100g/t, diethyldithiocarbamate 30g/t, No. 2 oily 20g/t; Triple cleaning adopts said troilite thing inhibitor 100g/t; Carried out 150t/d industry expanding test in a year, the result shows effectively separation of lead sulfur mineral of the above medicament condition of employing, obtains plumbous silver preparation concentrate; Giving that the ore deposit grade is plumbous 1.79%, under the sulphur 8.27%, silver-colored 50.24g/t condition, obtaining leadedly being 27.67%, the plumbous silver preparation concentrate of argentiferous 763.75g/t, lead recovery reaches 90.21%, and silver raising recovery rate reaches 88.78%.
Claims (3)
1. the preparation method of a troilite thing inhibitor; It is characterized in that; This preparation method's step is: it is in 20% sulfuric acid solution that 14～16g paranitroanilinum is joined 120～150ml volumetric concentration; Heating makes its dissolving, in ice bath, is cooled to 10 ℃ again, under this temperature, slowly adds 25～30ml mass percentage concentration and is 25% sodium nitrite solution and obtain product 1; With 12～15g 4; 4/-diaminobenzene sulfonanilide and 15～20ml 1mol/L hydrochloric acid are mixed with solution and in ice bath, are cooled to 10 ℃, obtain product 2 with product 1 coupling under pH9～10 conditions, get black powder soluble in water to product 2 and the coupling under pH10～11 conditions of 15～20ml 1mol/L m-phenylene diamine (MPD) and are said troilite thing inhibitor.
2. the application of troilite thing inhibitor in plumbous sulphur FLOTATION SEPARATION that be prepared into of claim 1; It is characterized in that; After earlier ore ore grinding to mineral monomer being dissociated, using sodium carbonate to transfer slurry pH is 8～9, in the floatation process; Add said troilite thing inhibitor by 250～350g/t, and then add 100～150g/t diethyldithiocarbamate as plumbous collecting agent and 80～100g/t2 oil as foaming agent.
3. according to the application of the said troilite thing of claim 2 inhibitor in plumbous sulphur FLOTATION SEPARATION, it is characterized in that during use, earlier said troilite thing inhibitor being mixed with mass percentage concentration is 1～2% the aqueous solution.
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| CN2010102756725A CN101972707B (en) | 2010-09-08 | 2010-09-08 | Preparation method and application of pyrite inhibitor |
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| CN2010102756725A CN101972707B (en) | 2010-09-08 | 2010-09-08 | Preparation method and application of pyrite inhibitor |
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| CN101972707B true CN101972707B (en) | 2012-11-21 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013152412A1 (en) * | 2012-04-12 | 2013-10-17 | Vale S.A. | A method for improving selectivity and recovery in the flotation of nickel sulphide ores that contain pyrhotite by exploiting the synergy of multiple depressants |
| CN103657861B (en) * | 2013-12-11 | 2015-07-22 | 广西大学 | Preparation method of nickel sulfide mineral inhibitor and application thereof |
| CN103691575B (en) * | 2013-12-17 | 2016-01-20 | 广西大学 | A kind of preparation method of vulcanized lead mineral inhibitor |
| CN103721856B (en) * | 2013-12-17 | 2015-12-02 | 广西大学 | A kind of preparation method of Garnet inhibitor |
| CN104399594A (en) * | 2014-11-21 | 2015-03-11 | 广西大学 | Preparation method and application of flotation separation inhibitor of zinc-sulfur minerals |
| CN106423579B (en) * | 2016-11-02 | 2018-11-20 | 广西大学 | A kind of preparation method of calcium carbonate mineral inhibitor |
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| CN87107882A (en) * | 1986-11-14 | 1988-05-25 | 住友金属矿山株式会社 | The beneficiating method of rare earth ore |
| CN87105202A (en) * | 1987-07-22 | 1988-08-10 | 广州有色金属研究院 | The method of flotation fluorite |
| CN101585016A (en) * | 2009-06-22 | 2009-11-25 | 广西大学 | Low grade fluorite and barite flotation separation method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61204053A (en) * | 1985-03-05 | 1986-09-10 | Dowa Mining Co Ltd | Copper-lead separating floatation method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87107882A (en) * | 1986-11-14 | 1988-05-25 | 住友金属矿山株式会社 | The beneficiating method of rare earth ore |
| CN87105202A (en) * | 1987-07-22 | 1988-08-10 | 广州有色金属研究院 | The method of flotation fluorite |
| CN101585016A (en) * | 2009-06-22 | 2009-11-25 | 广西大学 | Low grade fluorite and barite flotation separation method |
Non-Patent Citations (4)
| Title |
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| JP昭61-204053A 1986.09.10 |
| JP昭63-126568A 1988.05.30 |
| 铅锌浮选分离有机抑制剂的研究;龙秋容等;《金属矿山》;20090331(第3期);全文 * |
| 龙秋容等.铅锌浮选分离有机抑制剂的研究.《金属矿山》.2009,(第3期), |
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Inventor after: Wei Zongwu Inventor after: Chen Jianhua Inventor after: Mu Xiao Inventor after: Chen Ye Inventor after: Lan Lihong Inventor before: Wei Zongwu Inventor before: Chen Jianhua Inventor before: Mu Xiao Inventor before: Chen Ye Inventor before: Lan Lihong |
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