CN108816523A - Double hydroxy fatty acid soap collecting agents of a kind of alpha-amido and the preparation method and application thereof - Google Patents

Double hydroxy fatty acid soap collecting agents of a kind of alpha-amido and the preparation method and application thereof Download PDF

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Publication number
CN108816523A
CN108816523A CN201810408978.XA CN201810408978A CN108816523A CN 108816523 A CN108816523 A CN 108816523A CN 201810408978 A CN201810408978 A CN 201810408978A CN 108816523 A CN108816523 A CN 108816523A
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Prior art keywords
alpha
amido
fatty acid
hydroxy fatty
acid
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潘志权
李信
周红
程清蓉
张华丽
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Wuhan Institute of Technology
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Wuhan Institute of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/001Flotation agents
    • B03D1/018Mixtures of inorganic and organic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/02Collectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00Specified materials treated by the flotation agents; Specified applications
    • B03D2203/02Ores
    • B03D2203/04Non-sulfide ores
    • B03D2203/06Phosphate ores

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Detergent Compositions (AREA)

Abstract

The present invention relates to double hydroxy fatty acid soap collecting agents of a kind of alpha-amido and its preparation method and application, the structural formula of the double hydroxy fatty acid soap collecting agents of the alpha-amido is:The C8H17For eight carbon alkyl of straight chain.Collecting agent provided by the invention has efficient selectivity to dolomite, carries that mine ability is strong, and dosing is small, and bubble mobility is good, can be used for key player on a team's desiliconization and be used for it is counter select de-magging, to Ca2+、Mg2+Ion has preferable sorting, have good collecting performance, ore dressing overall efficiency 82.91~84.64%, raw material is easy to get, and beneficiation cost is low, and can 10 DEG C or so flotation at low temperature, be suitable for Collophanite flotation field.

Description

Double hydroxy fatty acid soap collecting agents of a kind of alpha-amido and the preparation method and application thereof
Technical field
The present invention relates to a kind of collecting agents, and in particular to a kind of double hydroxy fatty acid soap collecting agents of alpha-amido and its preparation side Method.
Background technique
Collophane is phosphate fertilizer and phosphatic basic material, has highly important work to agricultural production and grain security With.The phosphorus ore " rich without richness " in China produces the grade of collophane in 17~18%P at present2O5.And it directly processes The grade of phosphate fertilizer and phosphatic phosphorus ore has to be larger than 28%P2O5, therefore the collophane of these extraction has to pass through floating and enriching After could processing and utilization.Moreover, collophane and the embedding earth relationship of dolomite are complicated in these collophanes, it is desirable that grinding fineness is high, choosing Mine production cost increases considerably, and the development of floating agent focuses primarily upon the multifunctional dough of water-wet side in recent years, and current Common fatty acid collecting agent bubble mobility is bad to cause the efficiency of separation low, and poor selectivity, intolerant to hard water, water solubility Difference, poor performance at low temperatures, are not able to satisfy the ore dressing requirement of this kind of collophane.Therefore, the research efficiency of separation is high, bubble mobility is good, Resistance to hard water, good water solubility, cryogenic property are well and the new collector of non-environmental-pollution has great importance.
Summary of the invention
It is a kind of novel the technical problem to be solved by the present invention is to aiming at the above shortcomings existing in the prior art, provide Double hydroxy fatty acid soap collecting agents of alpha-amido and preparation method thereof, the collecting agent good water solubility, selectivity is high, bubble mobility It is good, counter to collophane in acid condition de-magging can be selected, raw material is easy to get, and preparation is simple.
In order to solve the above technical problems, technical solution provided by the invention is:
A kind of double hydroxy fatty acid soap collecting agents of alpha-amido, the knot of the double hydroxy fatty acid soap collecting agents of the alpha-amido are provided Structure formula is:
The C8H17For eight carbon alkyl of straight chain.
The present invention also provides the preparation methods of the double hydroxy fatty acid soap collecting agents of above-mentioned alpha-amido, and specific step is as follows:
1) alpha-amido epoxyfatty acid is prepared:Alpha-amido oleic acid is mixed with Peracetic acid, the concentrated sulfuric acid, then stirring heating It is reacted 4~8 hours to 60~100 DEG C, isolates organic phase after reaction and obtain alpha-amido epoxyfatty acid;
2) the double hydroxy fatty acid soap collecting agents of alpha-amido are prepared:By alpha-amido epoxyfatty acid obtained by step 1) and tristearin Acid, sodium hydroxide, water, diethyl phthalate mixing, are then heated to 80~120 DEG C and are stirred to react 4~8 hours, reaction knot It discharges after beam, cooling obtains the double hydroxy fatty acid soap collecting agents of alpha-amido.
Preferably, the step 1) concentrated sulfuric acid concentration is 98%.
According to the above scheme, step 1) the stirring heating rate is 1~2 DEG C/min.
According to the above scheme, step 1) the alpha-amido oleic acid and the mass ratio of Peracetic acid, the concentrated sulfuric acid are 40:10.2~ 15:0.8~1.2.
According to the above scheme, the step 2) diethyl phthalate is diethyl phthalate, terephthalic acid (TPA) diethyl The mixture of one or both of ester.
According to the above scheme, step 2) the alpha-amido epoxyfatty acid and stearic acid, sodium hydroxide, water, phthalic acid two The mass ratio of ethyl ester is 60:20~50:6~15:20~50:0.1~0.3.
The present invention also provides double applications of the hydroxy fatty acid soap collecting agent in Collophanite flotation of above-mentioned alpha-amido.
The application method of the double hydroxy fatty acid soap collecting agents of above-mentioned alpha-amido, carries out flotation using direct-reverse flotation method, specifically Steps are as follows:
1) direct flotation:By collophane ore grinding to grinding fineness -0.074mm mass fraction up to 85~90%, flotation cell is poured into, Water is added to obtain the ore pulp that mass concentration is 20~35%, adjusting slurry pH with sodium carbonate is 9~10, and sodium metasilicate inhibition is added Then the double hydroxy fatty acid soap collecting agents of the alpha-amido are added in ore pulp by silicate, additional amount is 0.8-1.2Kg/t glue Phosphorus ore stirs, and progress one thick two is single-minded in flotation cell sweeps flotation, obtains concentrate slurry;
2) reverse flotation:Concentrate slurry obtained by step 1) is poured into flotation cell, water is added to obtain the mine that mass concentration is 20~35% Slurry adjusts slurry pH to 4~5 with dilute sulfuric acid, and phosphorus inhibitor (phosphoric acid) is added, by the double hydroxy fatty acid soaps of the alpha-amido Collecting agent is added in ore pulp, additional amount be 0.8-1.2Kg/t collophane, stir, using one thick two sweep technique into Row flotation.
The double hydroxy fatty acid soap collecting agents of alpha-amido provided by the invention since the alpha-position of fatty acid is replaced by amino, Water-wet side can form inner salt in the solution, increase the polarity of water-wet side, improve collecting agent and mineral surfaces metal ion Electrostatic force, increase the conductivity of solution, reduce surface tension;Also, due to introducing hydrophobicity in hydrophobic side The mobility of foam can be improved in weaker hydroxyl;In addition collaboration work occurs for the N atomic energy on the O atom and amino on carboxyl Stable five-membered ring chelate is formed with the metal ion with mineral surfaces, improves the collecting ability of collecting agent, NH2Base is to Ca2+、 Mg2+The difference of ionic interaction power is big compared with carboxyl, can improve collecting agent to Ca2+、Mg2+The sorting capability of ion.
The beneficial effects of the present invention are:1, collecting agent provided by the invention is compared with existing collecting agent, to dolomite With efficient selectivity, load mine ability is strong, and dosing is small (dosing is in 0.8-1.2Kg/t collophane), foam flowing Property it is good, scrape bubble time about 5~7min, foam time about 7~10min, can be used for key player on a team's desiliconization and be used for it is counter select de-magging, To Ca2+、Mg2+Ion has preferable sorting, has good collecting performance, and ore dressing overall efficiency 82.91~84.64% is former Material is easy to get, and beneficiation cost is low (about 4.8-7.2 member/t mine), and can 10 DEG C or so flotation at low temperature, be suitable for Collophanite flotation Field.2, collecting agent preparation process provided by the invention is simple, and reaction condition is mild, easy to industrialized production, and prepare and There is no the discharge of " three wastes " during use, it is environmental-friendly.
Detailed description of the invention
Fig. 1 is the infrared spectroscopy of the double hydroxy fatty acid soap collecting agents of resulting alpha-amido prepared by the embodiment of the present invention 1 Figure.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing to the present invention make into One step detailed description.
Embodiment 1
The double hydroxy fatty acid soap collecting agents of alpha-amido are prepared, specific step is as follows:
It takes 42.2g alpha-amido oleic acid in beaker, is slowly added to the concentrated sulfuric acid and 10.8g Peracetic acid of 0.8g 98%, with The heating rate stirring of 1 DEG C/min is warming up to 60 DEG C and reacts 8 hours, and reaction solution is transferred in separatory funnel again after reaction, Lower aqueous solution is separated, organic phase is washed with water for several times, obtains alpha-amido epoxyfatty acid.
Ingredient by weight percentage, take 25g alpha-amido epoxyfatty acid, 10g stearic acid, 5g sodium hydroxide, 20g water and 0.04g diethyl phthalate is placed in flask, is uniformly mixed, and is heated to 120 DEG C and is stirred to react 6 hours, after reaction The double hydroxy fatty acid soap collophane collecting agents of alpha-amido are obtained after discharging, cooling.
Fig. 1 is the infrared spectrogram of the double hydroxy fatty acid soap collecting agents of the resulting alpha-amido of the present embodiment.Such as Fig. 1, 1563.06cm-1And 1447.18cm-1Strong absworption peak be COOAbsorption band due to the formation of inner salt be carboxyl C-O bond distance Equalization.Two peaks near 722 are the absorption band of C-N key.1240.26cm-1And 1072.64cm-1Strong absworption peak be C-OH Absorption band, in 3421.47cm-1Wide absorption peak is the absorption band of CO-H, in 3332.15cm-1Absorption peak be N-H absorption Band is covered by strong hydroxyl peak.In 2923.05cm-1And 2653.08cm-1Strong absworption peak methyl and methylene absorption Band can deduce the following (C of structural formula of the collecting agent of preparation8H17For eight carbon alkyl of straight chain):
Embodiment 2
The double hydroxy fatty acid soap collecting agents of alpha-amido are prepared, specific step is as follows:
Take 211g alpha-amido oleic acid in beaker, be slowly added to the concentrated sulfuric acid and 75g Peracetic acid of 6g 98%, with 2 DEG C/ The heating rate stirring of min is warming up to 100 DEG C and reacts 4 hours, and reaction solution is transferred in separatory funnel again after reaction, is separated Lower aqueous solution, organic phase are washed with water for several times, obtain alpha-amido epoxyfatty acid.
Ingredient by weight percentage, take 100g alpha-amido epoxyfatty acid, 83.33g stearic acid, 25g sodium hydroxide, 83.33g water and 0.5g diethyl phthalate are placed in flask, are uniformly mixed, and are heated to 80 DEG C and are stirred to react 8 hours, instead It discharges after answering, obtain the double hydroxy fatty acid soap collophane collecting agents of alpha-amido after cooling.
Embodiment 3
Use embodiment 1 and the double hydroxy fatty acid soap collophane collecting agents of the alpha-amido of the preparation of embodiment 2 as collecting respectively Agent carries out direct-reverse flotation to the big exit of valley collophane in Hubei using reverse floatation process, and the chemical composition of essential element is shown in Table 1:
Table 1
Specifically method for floating is:
1. direct flotation:By collophane ore grinding to grinding fineness -0.074mm mass fraction up to 85~90%, flotation cell is poured into, Water is added to obtain the ore pulp that mass concentration is 35%, adjusting slurry pH with 10% sodium carbonate liquor is 9~10, and silicic acid is added Sodium inhibits silicate, and a small amount of calgon is then added and plays dispersing agent, prevents ore particle from assembling agglomerating, presses down at the same time Other metal ions are made, then the double hydroxy fatty acid soap collophane collecting agents of alpha-amido are added in ore pulp, additional amount is 0.8Kg/t collophane (beneficiation cost is about 4.8 yuan/t mine), stirs, and progress one thick two is single-minded in flotation cell sweeps Flotation obtains concentrate slurry;
2. reverse flotation:Gained concentrate slurry is poured into flotation cell, adds water to obtain the ore pulp that mass concentration is 20~35%, adds dilute Sulfuric acid adjusts slurry pH to 4~5, adds phosphoric acid and inhibits collophane, is eventually adding the double hydroxy fatty acid soap glue phosphorus of alpha-amido Mine collecting agent, additional amount are 1.2Kg/t collophane (beneficiation cost is about 7.2 yuan/t mine), are stirred, using one thick two Technique is swept to flotate dolomite.
In floatation process, bubble time about 7min, foam time about 10min are scraped, bubble mobility is good.
Data are as shown in table 2 before and after flotation:
Table 2
P2O5/ % The rate of recovery/% MgO/%
Experimental example 1 Concentrate 29.36 84.64 0.81
Tailing 4.16
Experimental example 2 Concentrate 29.85 82.91 0.83
Tailing 4.34
The grade and the rate of recovery that can be seen that concentrate after reverse flotation by above-mentioned data are all higher, by just in embodiment 1 Select one thick two it is single-minded sweep, anti-choosing sweeps to obtain concentrate grade 29.36% by one thick two.Pass through same dresser in embodiment 2 Skill obtains the floatation indicators of concentrate grade 29.85%.
The carbonate mineral of DOLOMITE CRYSTALS category trigonal system, chemical component are CaMg (CO3)2, selected collophane raw ore Content of MgO 5.16%, after the collecting agent flotation that 2 concentrate content of MgO of table can be seen that using Examples 1 and 2 synthesis, concentrate Content of MgO is reduced to 0.81~0.83%, illustrates that collecting agent provided in this embodiment is selectively good to dolomite.
In addition, remaining above-mentioned floatation process is constant, flotation temperature is to carry out flotation at 10 DEG C, the results showed that flotation effect is poor Not less, illustrate that such collecting agent is also suitable under 10 DEG C or so low temperature.

Claims (9)

1. a kind of double hydroxy fatty acid soap collecting agents of alpha-amido, which is characterized in that the double hydroxy fatty acid soap collectings of the alpha-amido The structural formula of agent is:
The C8H17For eight carbon alkyl of straight chain.
2. a kind of preparation method of the double hydroxy fatty acid soap collecting agents of alpha-amido described in claim 1, which is characterized in that specific Steps are as follows:
1) alpha-amido epoxyfatty acid is prepared:Alpha-amido oleic acid is mixed with Peracetic acid, the concentrated sulfuric acid, then stirring is warming up to 60 ~100 DEG C are reacted 4~8 hours, are isolated organic phase after reaction and are obtained alpha-amido epoxyfatty acid;
2) the double hydroxy fatty acid soap collecting agents of alpha-amido are prepared:By alpha-amido epoxyfatty acid obtained by step 1) and stearic acid, hydrogen Sodium oxide molybdena, water, diethyl phthalate mixing, are then heated to 80~120 DEG C and are stirred to react 4~8 hours, go out after reaction Material, cooling obtain the double hydroxy fatty acid soap collecting agents of alpha-amido.
3. preparation method according to claim 2, which is characterized in that the step 1) concentrated sulfuric acid concentration is 98%.
4. preparation method according to claim 2, which is characterized in that step 1) the stirring heating rate be 1~2 DEG C/ min。
5. preparation method according to claim 2, which is characterized in that step 1) the alpha-amido oleic acid and Peracetic acid, The mass ratio of the concentrated sulfuric acid is 40:10.2~15:0.8~1.2.
6. preparation method according to claim 2, which is characterized in that the step 2) diethyl phthalate is adjacent benzene two The mixture of one or both of formic acid diethylester, diethyl terephthalate.
7. preparation method according to claim 2, which is characterized in that step 2) the alpha-amido epoxyfatty acid and tristearin Acid, sodium hydroxide, water, diethyl phthalate mass ratio be 60:20~50:6~15:20~50:0.1~0.3.
8. a kind of double applications of the hydroxy fatty acid soap collecting agent in Collophanite flotation of alpha-amido described in claim 1.
9. application according to claim 8, which is characterized in that carry out flotation using direct-reverse flotation method, specific steps are such as Under:
1) direct flotation:By collophane ore grinding to grinding fineness -0.074mm mass fraction up to 85~90%, flotation cell is poured into, water is added The ore pulp that mass concentration is 20~35% is obtained, adjusting slurry pH with sodium carbonate is 9~10, and sodium metasilicate is added and inhibits silicic acid Then the double hydroxy fatty acid soap collecting agents of the alpha-amido are added in ore pulp by salt, additional amount is 0.8-1.2Kg/t glue phosphorus Mine stirs, and progress one thick two is single-minded in flotation cell sweeps flotation, obtains concentrate slurry;
2) reverse flotation:Concentrate slurry obtained by step 1) is poured into flotation cell, water is added to obtain the ore pulp that mass concentration is 20~35%, is used Dilute sulfuric acid adjusts slurry pH to 4~5, and phosphorus inhibitor is added, and the double hydroxy fatty acid soap collecting agents of the alpha-amido are added Into ore pulp, additional amount is 0.8-1.2Kg/t collophane, is stirred, and sweeps technique using one thick two and carries out flotation.
CN201810408978.XA 2018-05-02 2018-05-02 Double hydroxy fatty acid soap collecting agents of a kind of alpha-amido and the preparation method and application thereof Pending CN108816523A (en)

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CN109290061A (en) * 2018-11-29 2019-02-01 武汉工程大学 A kind of trihydroxy fatty acid soaps collecting agent and its preparation method and application
CN112221718A (en) * 2020-09-17 2021-01-15 宜都兴发化工有限公司 Collecting agent applied to normal-temperature alkali-free flotation of collophanite and preparation method thereof
CN114011580A (en) * 2021-10-29 2022-02-08 宜都兴发化工有限公司 Impurity removal method for low-grade micro-fine particle phosphate ore

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Publication number Priority date Publication date Assignee Title
CN109290061A (en) * 2018-11-29 2019-02-01 武汉工程大学 A kind of trihydroxy fatty acid soaps collecting agent and its preparation method and application
CN112221718A (en) * 2020-09-17 2021-01-15 宜都兴发化工有限公司 Collecting agent applied to normal-temperature alkali-free flotation of collophanite and preparation method thereof
CN114011580A (en) * 2021-10-29 2022-02-08 宜都兴发化工有限公司 Impurity removal method for low-grade micro-fine particle phosphate ore
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