CN102921556B - Iron ore reverse flotation mixed collector and preparation and application thereof - Google Patents
Iron ore reverse flotation mixed collector and preparation and application thereof Download PDFInfo
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- CN102921556B CN102921556B CN201110227404.0A CN201110227404A CN102921556B CN 102921556 B CN102921556 B CN 102921556B CN 201110227404 A CN201110227404 A CN 201110227404A CN 102921556 B CN102921556 B CN 102921556B
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Abstract
The invention discloses a method for preparing an iron ore reverse flotation mixed collector. The method is characterized in that C12-18 fatty acids are used as main raw materials, modified by using a method of chlorination, sulfonation, nitration and the like and matched with a surfactant such as tween and a corrosion inhibitor, wherein the content of the modified fatty acids accounts for 60 to 85 percent of the total weight, the consumption of oleic acid accounts for 10 to 35 percent of the total weight, the consumption of the surfactant such as the tween accounts for 0.5 to 5 percent of the total weight, the corrosion inhibitor is sodium tripolyphosphate and the like, and the consumption of the corrosion inhibitor accounts for 0 to 1 percent of the total weight. The mixed collector has a good grading effect on impurities such as gangue in iron ore, can improve the grade of iron concentrate, and is particularly suitable for iron extraction and silicon reduction of the high-grade iron ore due to low price. Meanwhile, the collector has foaming performance and high adaptability to hard water.
Description
Technical field
The present invention relates to hybrid collector and preparation method thereof for a kind of Counterfloatating desiliconization.
Background technology
China's iron ore concentrate is mainly the thick product after magnetic separation operation sorts, and silicone content is higher, should not directly smelt.And through repeatedly pulverizing and mill, granularity is thinner, with gravity treatment, magnetic selection method, be difficult to further improve its grade.Flotation is relatively applicable to granularity in the separation of 35-200 μ m particle, conventionally with gravity treatment, magnetic selection method coupling with raising concentrate grade.
Thereby flotation is to utilize mineral particle hydrophobic properties of the surface difference to realize the method for different minerals separation.Floatation process must add floating agent in ore pulp.Floating agent is for regulating the hydrophilic or hydrophobic performance of different minerals, changes mineral surfaces physicochemical properties and ore pulp solution chemistry character and the general designation of the various medicaments that add.Wherein, collecting agent is the key medicament of mineral floating, is to run through " carrying Fe and reducing Si ", improves the main line of concentrate grade.
Collecting agent be take surfactant and modified product thereof as main.Different according to functional group, collecting agent is mainly divided into anion and the large class of cation two.With regard to selective and the rate of recovery, the collecting agent performance of the flotation silicon of existing bibliographical information is not ideal enough, and the shortcoming of conventional collecting agent is mainly manifested in the following aspects:
(1) more responsive to slurry temperature, when especially temperature is too low, collecting performance sharply declines;
(2) easily the non-object mineral in ore are brought in flotation concentrate, caused concentrate product quality to decline;
(3) the pH value of ore pulp is larger on the impact of its collecting performance;
(4) the concentrate rate of recovery is lower, has necessity of further lifting;
The lifting of collecting agent flotation performance, first can start with from changing functional group, by introduce different functional groups at the diverse location of carbochain, improves the sort effect of collecting agent to target mineral.Meanwhile, mixed reagent is an important directions of surfactant application study, is also the important directions of floating agent development.Flotation practice shows, in floatation process, between different collecting agents or between other floating agent such as collecting agent and foaming agent compatibility can reduce dosing with, reduce reagent cost, raising flotation effect.
At present, about using the main example of anion collecting agent to have:
(1) CN 1343531A (00112563.X) has disclosed that a kind of to take croude fatty acids or fatty acid mixed be base stock, and through Sulfated collecting agent, it has to iron ore the effect that sorts preferably, and flotation effect is better than factory makes with medicament.
(2) CN 1919466A (200610020204.7) discloses and a kind ofly take oleic acid as primary raw material, hybrid collector of flotation collecting ilmenite and preparation method thereof.
Summary of the invention
The deficiency existing for current collecting agent, first the present invention carries out modification to base stock, at saturated fatty acid α-hydrogen place or the two keys of unrighted acid place introduce functional group, change the hydrophilic and hydrophobic energy of anion surfactant, thereby improve the selective of medicament.
Collecting agent in reverse floatation provided by the invention, the method for modifying of its base stock is: chlorination, sulfonation, nitrated etc., involved chemical reaction can represent in order to lower equation:
Collecting agent in reverse floatation provided by the invention is a kind of hybrid collector, it is characterized in that: adopt anion surfactant and non-ionic surface active agent is composite forms.
The present invention is achieved through the following technical solutions:
A kind of floatation catcher of iron ore, consist of: the content of fatty acid of chlorination or sulfonation or nitrated modification accounts for gross weight 60%-85%, oleic acid consumption accounts for the 10%-35% of gross weight, non-ionic surface active agent consumption is at 0.5%-5%, corrosion inhibiter is sodium phosphate trimer, and its consumption accounts for the 0-1% of gross weight.
The preparation of described floatation catcher of iron ore:
Adopting C12～18 aliphatic acid is primary raw material, adopts chlorination or sulfonation or nitrated mode to carry out modification to C12～18 aliphatic acid, and is equipped with oleic acid, non-ionic surface active agent and corrosion inhibiter and mixes;
Its modified fat acid content accounts for gross weight 60%-85%, and oleic acid consumption accounts for the 10%-35% of gross weight, and non-ionic surface active agent consumption is at 0.5%-5%, and corrosion inhibiter is sodium phosphate trimer, and its consumption accounts for the 0-1% of gross weight.
Be specially,
(1) adopting C12～18 aliphatic acid is primary raw material, adds clorox or the concentrated sulfuric acid or red fuming nitric acid (RFNA), in 60-90 ℃ of water-bath, carries out modification 0.5-1 hour;
(2) be equipped with oleic acid, non-ionic surface active agent and corrosion inhibiter; Wherein, modified fat acid content accounts for gross weight 60%-85%, and oleic acid consumption accounts for the 10%-35% of gross weight, and the non-ionic surface active agent consumptions such as tween are at 0.5%-5%, and corrosion inhibiter is sodium phosphate trimer, and its consumption accounts for the 0-1% of gross weight.
Described non-ionic surface active agent is Tween-80 or Tween-60; The leftover bits and pieces that its fatty acid source produces in production process of vegetable oil or intermediate product.
Described collecting agent iron ore flotation process, first adopts NaOH to carry out saponification processing to collecting agent before use, and the consumption of NaOH is the 10-15% of collecting agent quality, then is made into the aqueous solution of quality mass concentration 1-10%.
Reverse flotation hybrid collector provided by the invention has to the impurity such as gangue in iron ore the effect that sorts preferably, can improve the grade of iron ore concentrate, is particularly applicable to the Fe and reducing Si of carrying of high grade iron ore.Meanwhile, collecting agent of the present invention has frothing capacity concurrently, and hard water is adapted to.
Accompanying drawing explanation
Fig. 1 reverse flotation open circuit flow chart.
The specific embodiment
Be below specific embodiments of the invention, but not thereby limiting the invention.
Embodiment 1
Get 50 grams of aliphatic acid, add 10 milliliters of mass concentration 30% liquor natrii hypochloritises, in 90 ℃ of water-baths, reflux 0.5 hour, cooling; Drain water layer, add 10 grams of oleic acid, 1.0 grams of Tween-60s, 0.5 gram of sodium phosphate trimer, mixes and obtains collecting agent.Adopt NaOH by the saponification 0.5 hour in 90 ℃ of water-baths of the collecting agent of above-mentioned preparation, the consumption of NaOH is 9.0 grams, is made into mass concentration 1% aqueous solution and can be used for flotation.
Float test carries out in 0.75L hanging trough flotator, adopts a thick smart reverse flotation open circuit flow process (Fig. 1).Control flotation temperature 35 ℃ of left and right, take NaOH as adjusting agent, cornstarch is inhibitor, and calcium oxide is activator, and dosing flow process and dosing are as shown in the table:
Table one floatation process and dosing
Analysis result shows, Floatation Concentrate Grade is 66.40%, and the concentrate rate of recovery reaches 87.79%.
Embodiment 2
Get 50 grams of aliphatic acid, add 10 milliliters of concentrated sulfuric acids, in 60 ℃ of water-baths, reflux 0.5 hour, cooling, add 10 grams of oleic acid after draining water layer, 1.0 grams of Tween-60s, 0.5 gram of sodium phosphate trimer, mixes and obtains collecting agent.Adopt NaOH by the saponification 0.5 hour in 90 ℃ of water-baths of the collecting agent of above-mentioned preparation, the consumption of NaOH is 9.0 grams, is made into mass concentration 1% aqueous solution and can be used for flotation.
Float test carries out in 0.75L hanging trough flotator, and dosing flow process and dosing be with embodiment 1, and float test post analysis result shows, concentrate grade is 66.80%, and the concentrate rate of recovery reaches 83.31%.
Embodiment 3
Get 50 grams of aliphatic acid, add 10 milliliters of red fuming nitric acid (RFNA)s, in 70 ℃ of water-baths, reflux 1 hour, cooling, add 10 grams of oleic acid after draining water layer, 1.0 grams of Tween-60s, 0.5 gram of sodium phosphate trimer, mixes and obtains collecting agent.Adopt NaOH by the saponification 0.5 hour in 90 ℃ of water-baths of the collecting agent of above-mentioned preparation, the consumption of NaOH is 9.0 grams, is made into mass concentration 1% aqueous solution and can be used for flotation.
For further evaluating the effect of floating agent, the present embodiment collecting agent and industry spot with medicament have been carried out to float test contrast.Float test carries out in 0.75L hanging trough flotator, 125 grams of mixed magnetic essence consumptions, and pulp density is 20%, dosing flow process and dosing are with embodiment 1.
Float test post analysis result shows, the concentrate grade that the prepared collecting agent of embodiment 3 obtains is 58.34%, and the concentrate rate of recovery reaches 91.77%, compare with medicament 2 with medicament 1, when open circuit flotation, in the situation that the concentrate rate of recovery is close, concentrate grade obviously improves.
The flotation effect comparison of the different collecting agents of table two
This hybrid collector has to the impurity such as gangue in iron ore the effect that sorts preferably, can improve the grade of iron ore concentrate, cheap because of it, is particularly applicable to the Fe and reducing Si of carrying of high grade iron ore.Meanwhile, collecting agent of the present invention has frothing capacity concurrently, and hard water is adapted to.
Claims (4)
1. a floatation catcher of iron ore, is characterized in that:
Consist of: the content of fatty acid of chlorination or sulfonation or nitrated modification accounts for gross weight 60%-85%, oleic acid consumption accounts for the 10%-35% of gross weight, and non-ionic surface active agent consumption is at 0.5%-5%, and corrosion inhibiter is sodium phosphate trimer, and its consumption accounts for the 0-1% of gross weight.
2. a preparation method for floatation catcher of iron ore described in claim 1, is characterized in that:
Adopting C12～18 aliphatic acid is primary raw material, adopts chlorination or sulfonation or nitrated mode to carry out modification to C12～18 aliphatic acid, and is equipped with oleic acid, non-ionic surface active agent and corrosion inhibiter and mixes;
Its modified fat acid content accounts for gross weight 60%-85%, and oleic acid consumption accounts for the 10%-35% of gross weight, and non-ionic surface active agent consumption is at 0.5%-5%, and corrosion inhibiter is sodium phosphate trimer, and its consumption accounts for the 0-1% of gross weight.
3. according to preparation method claimed in claim 2, it is characterized in that: be specially,
(1) adopting C12～18 aliphatic acid is primary raw material, adds clorox or the concentrated sulfuric acid or red fuming nitric acid (RFNA), in 60-90 ℃ of water-bath, carries out modification 0.5-1 hour;
(2) be equipped with oleic acid, non-ionic surface active agent and corrosion inhibiter; Wherein, modified fat acid content accounts for gross weight 60%-85%, and oleic acid consumption accounts for the 10%-35% of gross weight, and tween non-ionic surface active agent consumption is at 0.5%-5%, and corrosion inhibiter is sodium phosphate trimer, and its consumption accounts for the 0-1% of gross weight.
4. according to preparation method claimed in claim 2, it is characterized in that:
Described non-ionic surface active agent is Tween-80 or Tween-60; The leftover bits and pieces that its fatty acid source produces in production process of vegetable oil or intermediate product.
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| CN105233992B (en) * | 2015-11-05 | 2017-06-27 | 鞍钢集团矿业有限公司 | A kind of bloodstone normal temperature short flow reverse floatation method |
| CN108906336B (en) * | 2018-09-06 | 2020-08-28 | 宁波敬业控股集团有限公司 | Iron ore reverse flotation reagent and using method thereof |
| CN112827660A (en) * | 2020-12-31 | 2021-05-25 | 湖北富邦新材料有限公司 | Method for improving activity of fatty acid salt ore flotation collector in hard water |
| CN117732599B (en) * | 2024-02-07 | 2024-05-31 | 矿冶科技集团有限公司 | Fatty acid modifier, low temperature resistant spodumene ore medicament, preparation method thereof and method for floating spodumene by using same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101224441A (en) * | 2007-01-18 | 2008-07-23 | 中国地质科学院郑州矿产综合利用研究所 | Molybdenum-tungsten oxide ore dressing process |
| CN101428248A (en) * | 2008-11-04 | 2009-05-13 | 中钢集团马鞍山矿山研究院有限公司 | Beneficiation method for recycling specularite |
| CN101912822A (en) * | 2010-08-23 | 2010-12-15 | 长沙矿冶研究院 | Negative/positive ion collector for iron ore flotation and preparation method thereof |
| CN102008999A (en) * | 2010-10-26 | 2011-04-13 | 化工部长沙设计研究院 | Process for extracting potassium chloride from native sylvite ore |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101224441A (en) * | 2007-01-18 | 2008-07-23 | 中国地质科学院郑州矿产综合利用研究所 | Molybdenum-tungsten oxide ore dressing process |
| CN101428248A (en) * | 2008-11-04 | 2009-05-13 | 中钢集团马鞍山矿山研究院有限公司 | Beneficiation method for recycling specularite |
| CN101912822A (en) * | 2010-08-23 | 2010-12-15 | 长沙矿冶研究院 | Negative/positive ion collector for iron ore flotation and preparation method thereof |
| CN102008999A (en) * | 2010-10-26 | 2011-04-13 | 化工部长沙设计研究院 | Process for extracting potassium chloride from native sylvite ore |
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