CN102259062B - Cationic flotation collector and preparation method thereof - Google Patents

Cationic flotation collector and preparation method thereof Download PDF

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CN102259062B
CN102259062B CN 201110125928 CN201110125928A CN102259062B CN 102259062 B CN102259062 B CN 102259062B CN 201110125928 CN201110125928 CN 201110125928 CN 201110125928 A CN201110125928 A CN 201110125928A CN 102259062 B CN102259062 B CN 102259062B
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formula
ore
flotation
collector
ammonium salt
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CN102259062A (en
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钟宏
夏柳荫
王帅
张永
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Central South University
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Abstract

The invention discloses a cationic flotation collector and a preparation method thereof. An organic silicon ammonium salt compound shown by a formula I is used as a collector for flotation of oxidized ore and salt ore. In the formula I, R1 is a C8 to C18 alkyl, R2 and R3 may be hydrogen atom, methyl or ethyl respectively, R4, R5 and R6 may be methyl, methoxy, ethyl or ethoxy respectively and X may be Cl or Br. The preparation method is to react fatty amine with organohalosilane at 0 to 80DEG C for 0.5 to 2 hours to form the organic silicon ammonium salt compound shown by the formula I. The organic silicon ammonium salt collector disclosed by the invention can be used in place of a fatty amine collector for removing silicon and purity in reverse flotation of oxidized ore such as aluminum ore and iron ore and for floating zinc oxide and floating and separating potassium chloride and sodium chloride. Compared with fatty amine collector, the cationic flotation collector has the characteristics of high collecting capacity, high selectivity, low use amount per ton of ore, convenience for use and the like.

Description

A kind of cationic flotation collector and preparation method thereof
[technical field]
The present invention relates to a kind of cationic flotation collector---organosilicon ammonium salt compound and preparation method thereof.
[background technology]
The fifties in last century, the U.S. uses fat primary amine cationic flotation collecting agent successfully to realize the Counterfloatating desiliconization of iron ore.Since then, cationic collecting agent is paid attention to as a kind of important floating agent always deeply, the application that not only in the Counterfloatating desiliconization removal of impurities of the oxide ores such as iron ore, bauxite, apatite, succeeds, and also obtain commercial Application at the aspects such as FLOTATION SEPARATION of flotation, potassium chloride and the sodium chloride of zinc oxide ore.At present employed cationic collecting agent is mainly fat amine compound, take lauryl amine and octadecylamine as Typical Representative, is characterized in that the collecting agent collecting ability is strong, and dosing is less, and flotation efficiency is higher, and technological process is simple, is easy to commercial Application.But it is responsive to sludge also to exist collecting agent, selectively relatively poor, generally need carry out the shortcomings such as desliming processing.
For the problem and shortage that the cationic collecting agent of fatty amine exists, patent US3960715 discloses the foam flotation method that uses cation-collecting agent FLOTATION SEPARATION silicon minerals from iron ore such as dodecyl trimethyl quaternary ammonium salt; Patent ZL02113999.7 discloses a kind of substitutional amine-group compound for inverse floatation of bauxite, and its structural formula is RY (CH 2) 2NH 2, wherein Y is that O or NH, R are straight, branched alkyl, cycloalkyl, thiazolinyl or the aromatic radical that contains 1~20 carbon atom; Patent ZL02139837.2 discloses a kind of compound quaternary cationic surfactant for iron ore and inverse floatation of bauxite.Above-mentioned disclosed patented technology respectively has characteristics, but remains in certain deficiency, and main manifestations is that collecting agent is relatively poor to fine fraction silicate mineral collecting ability, its collecting ability and selectively and still need further raising.
The present invention proposes that a kind of new cationic collecting agent---the organosilicon ammonium salt compound is as the collecting agent of oxide ore and Saline minerals flotation, and the preparation method of this compounds.The organosilicon ammonium salt compound is owing to have the organosilicon radical of strong-hydrophobicity in the collecting agent molecule, thereby the remarkable FLOTATION SEPARATION of oxidation ore deposit and saline minerals has simple synthetic method, flotation efficiency height, metal recovery rate high.At present, have no the report that the organosilicon ammonium salt compound is used in froth flotation.
[summary of the invention]
The purpose of this invention is to provide a kind of new cation-collecting agent---organosilicon ammonium salt compound, be applied to the floatation process of oxide ore and saline minerals, realize that the purpose mineral separate with the efficient flotation separation of its gangue mineral.Another object of the present invention aims to provide the preparation method of described organosilicon ammonium salt compound.
The objective of the invention is to realize by following manner.
The present invention will have the organosilicon ammonium salt compound of formula I structural formula as the collecting agent of oxide ore and Saline minerals flotation.
Figure BDA0000061423240000021
Formula I
R in the formula 1Be the alkyl of C8-C18, R 2And R 3Independently be selected from separately hydrogen atom, methyl or ethyl; R 4, R 5, R 6Independently be selected from separately methyl, methoxy or ethoxy, X is Cl or Br.
Organosilicon ammonium salt compound of the present invention is as the collecting agent of oxide ore and Saline minerals flotation, is to use this compound in the FLOTATION SEPARATION of Counterfloatating desiliconization removal of impurities, zinc oxide ore flotation or potassium chloride and sodium chloride at oxide ores such as aluminum ore, iron ores.
The invention provides a kind of preparation method who is used as the organosilicon ammonium salt compound of cationic flotation collector, it is characterized in that, the organosilicon ammonium salt compound preparation process of described formula I is: fatty amine and organohalosilanes are reacted, 0~80 ℃ of reaction temperature, reaction time is 0.5~24 hour, generates suc as formula the ammonium salt compound of organosilicon shown in the I.
Described fatty amine have a general molecular formula shown in the formula II:
Figure BDA0000061423240000022
Formula II
R wherein 1Be the alkyl of C8-C18, R 2And R 3Independently be selected from separately hydrogen atom, methyl or ethyl.
Described organohalosilanes have a general molecular formula shown in the formula III:
Figure BDA0000061423240000023
Formula III
R wherein 4, R 5, R 6Independently be selected from separately methyl, methoxy or ethoxy, X is Cl or Br.
Organosilicon ammonium salt cationic flotation collector of the present invention owing to introduced the organosilicon radical of strong-hydrophobicity on the basis of fatty amine structure, has the flotation performance more better than fatty amine.Table 1 has listed the trimethyl silicon based lauryl ammonium chloride of collecting agent of the present invention and has compared with the flotation performance of the collecting agent lauryl amine of commonly using to silicate minerals such as quartz, kaolinite, illite, pyrophillites, flotation conditions is pH values of pulp 8.5, and collecting agent concentration is 300mgL -1By as seen from Table 1, the trimethyl silicon based lauryl ammonium chloride of collecting agent of the present invention obviously is better than the lauryl amine commonly used to the flotation recovery rate of quartz, kaolinite, illite and pyrophillite.In addition, collecting agent of the present invention also has good water solubility, is easy to add the characteristics such as use.Product of the present invention is compared with the fatty amine collecting agent, has strong, selective high, the characteristics such as the mining amount of ton is low and easy to use of collecting ability.
Table 1 collecting agent of the present invention and the fatty amine collecting agent flotation performance comparing result of commonly using
Figure BDA0000061423240000031
[specific embodiment]
Following examples are intended to illustrate the present invention rather than limitation of the invention further.All percentages all refer to quality except as otherwise herein provided among the embodiment.
Embodiment 1:
185 parts of dodecyl amines are heated to 30-40 ℃ are fused into liquid, under agitation slowly add 108.6 parts of trim,ethylchlorosilanes, stirring reaction 30min obtains 293.5 parts of trimethyl silicon based lauryl ammonium chlorides of white powder product.Products obtained therefrom need not to make with extra care, directly as flotation collector.
Embodiment 2:
185 parts of dodecyl amines are heated to 30-40 ℃ are fused into liquid, slowly add 140.6 parts of methyl dimethoxy oxygen base chlorosilanes by 1: 1 molar ratio, stirring reaction 50min obtains 325 parts of silica-based lauryl ammonium chlorides of white powder product methyl dimethoxy oxygen base.Products obtained therefrom need not to make with extra care, directly as flotation collector.
Embodiment 3:
269 parts of octadecylamines are heated to 60 ℃ are fused into liquid, under agitation slowly add 108.6 parts of trimethylchloro-silicanes, stirring reaction 60min obtains 369.8 parts of trimethyl silicon based octadecyl ammonium chloride of white powder product.Products obtained therefrom need not to make with extra care, directly as flotation collector.
Embodiment 4:
The northeast magnetite ore, raw ore iron content 58.72%.The ore ore grinding accounts for 78% to-0.074mm, adds water and sizes mixing to 25% mass concentration, and adding sodium carbonate, to regulate slurry pH be about 9.0; Adopt twice selected reverse floatation process flow process of one roughing, roughly select and add soluble starch 260g/t, the trimethyl silicon based lauryl ammonium chloride 220g/t of collecting agent of adding embodiment 1 preparation, selected adding collecting agent 25g/t, obtain iron concentrate grade 70.31%, iron recovery 83.52%.
Embodiment 5:
Henan bauxite sample ore, raw ore contains Al 2O 362.63%, SiO 210.68%, alumina silica ratio is 5.86; The ore ore grinding is accounted for 80% to-0.074mm, flotation pulp concentration 30%, adjusting pH values of pulp with sodium carbonate is 8.5; Adopt the reverse floatation process flow process of one roughing triple cleaning, roughly select adding soluble starch 300g/t, add the trimethyl silicon based lauryl ammonium chloride 250g/t of collecting agent of embodiment 1 preparation, selected adding collecting agent 30g/t obtains Al 2O 368.85%, SiO 26.32% flotation concentrate, the concentrate alumina silica ratio reaches 10.89, Al 2O 3The rate of recovery 80.62%.
Embodiment 6:
The Yunnan zinc oxide ore, raw ore zinc grade is 9.70%.The ore ore grinding is accounted for 85% to-0.074mm, and flotation pulp concentration 30% adopts the direct floatation process flow process of one roughing primary cleaning once purging selection.Roughly select and add waterglass 400g/t, vulcanized sodium 3kg/t adds the silica-based lauryl ammonium chloride 280g/t of collecting agent methyl dimethoxy oxygen base that embodiment 2 prepares, and scans to add collecting agent 50g/t, obtaining the zinc oxide concentrate grade is 36.28%, and zinc recovery is 78.45%.
Embodiment 7:
The Qinghai salt mine, raw ore chloride containing potassium 7.84%, sodium chloride 73.56%.Regulating pulp density is 20%, adopts twice selected flotation process of one roughing.Roughly select the trimethyl silicon based octadecyl ammonium chloride 150g/t of collecting agent that adds embodiment 3 preparations, obtain concentrate chloride containing potassium 92.07%, the potassium chloride rate of recovery is 91.71%.

Claims (3)

1. a cationic flotation collector is characterized in that, will be used as suc as formula the organosilicon ammonium salt compound shown in the I collecting agent of oxide ore or Saline minerals flotation,
Figure FDA00002511333800011
The formula I
R in the formula 1Be selected from the alkyl of C8-C18, R 2And R 3Independently be selected from separately hydrogen atom, methyl or ethyl; R 4, R 5, R 6Independently be selected from separately methyl, methoxy or ethoxy, X is Cl or Br.
2. cationic flotation collecting agent according to claim 1 is characterized in that, uses the compound shown in the formula I in the FLOTATION SEPARATION of Counterfloatating desiliconization removal of impurities, zinc oxide ore flotation or potassium chloride and the sodium chloride of oxide ore; Described oxide ore comprises aluminum ore or iron ore.
3. the preparation method of organosilicon ammonium salt compound claimed in claim 1 is characterized in that, fatty amine and organohalosilanes are reacted, and 0~80 ℃ of reaction temperature, the reaction time is 0.5~2 hour, generates suc as formula the ammonium salt compound of organosilicon shown in the I;
Described fatty amine has the structure shown in the formula II:
Figure FDA00002511333800012
The formula II
R wherein 1Be the alkyl of C8-C18, R 2And R 3Independently be selected from separately hydrogen atom, methyl or ethyl;
Described organohalosilanes has the structure shown in the formula III:
Figure FDA00002511333800013
The formula III
R wherein 4, R 5, R 6Independently be selected from separately methyl, methoxy or ethoxy, X is Cl or Br.
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CN103769307B (en) * 2013-10-28 2017-03-22 东北大学 Collecting agent for water-soluble cations, preparation method thereof and application thereof
CN104826743B (en) * 2015-04-30 2017-09-29 陕西省地质矿产实验研究所 Collecting agent for sorting zinc oxide ores and preparation method thereof
CN106733209A (en) * 2015-11-19 2017-05-31 中钢集团马鞍山矿山研究院有限公司 A kind of preparation method of microfine iron ore reverse flotation collecting agent
CN105435968A (en) * 2015-12-24 2016-03-30 东北大学 Reverse-flotation desiliconizing method for hematite ore
AU2017376241B2 (en) 2016-12-14 2022-04-21 Ecolab Usa Inc. Functionalized silicones for froth flotation
CN109569894A (en) * 2018-12-11 2019-04-05 武汉理工大学 Quaternary ammonium salt ionic liquid cation-collecting agent and its preparation method and application

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