阅读说明：本技术 一种新型表面活性剂在铁矿石反浮选上的应用方法 (A kind of application method of novel surfactant on iron ore reverse flotation ) 是由 黄志强 刘祖文 邱廷省 余新阳 李立清 廖春发 赵奎 何桂春 艾光华 冯博 于 2019-08-14 设计创作，主要内容包括：本发明公开了一种新型表面活性剂在铁矿石反浮选上的应用方法,在铁矿反浮选中使用如式I所示的新型表面活性剂作为捕收剂。该新型表面活性剂作为捕收剂,其分子中具有两个亲矿物基团,与矿物表面的作用能力更强,对目标矿物的选择性更好；具有两个疏水性基团,增加捕收剂的疏水能力,对目标矿物的捕收能力更强,相对现有技术中常用浮选捕收剂能有效提高浮选效率和回收率等特点；同时,由于其特殊的分子结构,其具有Krafft点低的特点。相对现有技术中常用浮选捕收剂能有效提高铁矿反浮选的浮选效率和回收率,且更能在低温情况下使用等特点。(The invention discloses a kind of application method of novel surfactant on iron ore reverse flotation, use novel surfactant shown in formula I as collecting agent in iron ore reverse flotation.The novel surfactant is as collecting agent, and there are two close mineral groups for tool in molecule, stronger with the ability to function of mineral surfaces, more preferable to the selectivity of target mineral；Tool increases the hydrophobic ability of collecting agent there are two hydrophobic group, stronger to the collecting ability of target mineral, compared with the prior art in commonly use the features such as flotation collector can effectively improve flotation efficiency and the rate of recovery；Simultaneously as its special molecular structure, has the characteristics that Krafft point is low.Flotation collector is commonly used in compared with the prior art can effectively improve the flotation efficiency and the rate of recovery of iron ore reverse flotation, and the features such as can more use at low temperatures.)

1. a kind of application method of novel surfactant on iron ore reverse flotation, it is characterised in that: will have Formulas I structural formula The double dodecyl ammonium bromide -1,2,4- triazoles of 4- amino -3,5- dihydroxymethyl -1,2- be used as the collecting in iron ore reverse flotation Agent, starch are inhibitor, and No. 2 oil make foaming agent, and flotation pulp pH value range is pH 5~9, and ore grain size is that -200 mesh account for 50%~100%, flotation temperature is 0-35 DEG C；

2. a kind of application method of the novel surfactant according to claim 1 on iron ore reverse flotation, feature Be: flotation pulp pH value range is pH 5~9；Ore grain size is that -200 mesh account for 50%~100%.

3. a kind of application method of the novel surfactant according to claim 1 on iron ore reverse flotation, feature Be: the amount ranges of novel surfactant shown in formula I are 50~300g/t.

4. a kind of application method of the novel surfactant according to claim 1 on iron ore reverse flotation, feature Be: the dosage of starch is 400~2000g/t；No. 2 oily dosages are 30~100g/t.

5. a kind of application method of the novel surfactant according to claim 1 to 4 on iron ore reverse flotation, It is characterized in that, entering flotation after mainly comprising the steps that (a) grinde ore；(b) it is added in ore grinding and/or floatation process Floating agent is sized mixing, and novel surfactant shown in formula I is at least contained in the collecting agent of addition；(c) pass through froth flotation Method emersion silicate mineral.

Technical field

The invention belongs to technical field of beneficiation, it particularly relates to which a kind of novel surfactant is in iron ore reverse flotation On application method.

Background technique

Iron ore is the protection resource of China's steel and iron industry, belongs to the Major Strategic Demand of country.With China's steel The rapid development of industry, rapidly increases the demand of iron ore, however, iron ore deposit poor, thin, miscellaneous feature in China's causes There is the situation that supply falls short of demand in domestic iron ore, to iron ore deposit comprehensive development and utilization, more stringent requirements are proposed for this.2017, Imported Fe ore 10.75 hundred million t in China's increases 7.5%, and external dependence degree is more than 87%.Although China's iron ore gross reserves is big, But mine iron average grade is only 34.29%, and more global iron ore mine iron average grade is about 11 percentage points low, a large amount of poor miscellaneous weak Vignite resource fails to obtain effective exploitation utilization.Thus, autonomous innovation technology is researched and developed, realizes the efficient of China's iron ore deposit Development and utilization improve the iron ore degree of self-sufficiency, have important strategic importance.Counterfloatating desiliconization technology is that current iron ore is most effective One of beneficiation method, iron ore Counterfloatating desiliconization refer in floatation process, and silicate gangue mineral is floated in the form of foam It is excluded as tailing, and target minreal stays in flotation grain as concentrate.In floatation process, flotation collector is key, directly Connect the quality that decide floatation indicators.Currently, iron ore reverse flotation mainly uses amine cation-collecting agent, wherein including straight chain alkane Base amine, ether amines class etc., but the shortcomings that common amine collector is that collecting ability is weak, dosage is big, solubility at low temperature And bad dispersibility.Therefore, it is led in the dressing plant in China in winter since the dissolubility of common amine cation-collecting agent is poor Cause the dosage of amine cation-collecting agent very big, and the index errors such as the grade of iron ore concentrate and the rate of recovery.Therefore, in order to solve Under low temperature in iron ore reverse flotation the floatation indicators difference of iron ore concentrate technical problem, research and development collecting ability is strong, selectivity is good New and effective iron ore collecting agent in reverse floatation, the sustainable developments of development and utilization and related industries to iron ore deposit has ten Divide great meaning.

Currently, about the bis- dodecyls of novel surfactant 4- amino -3,5- dihydroxymethyl -1,2- shown in Formulas I Ammonium bromide -1,2,4- triazole has not been reported in iron ore reverse flotation as the application of flotation collector.

In view of this present invention is specifically proposed.

Summary of the invention

Exist the technical problem to be solved in the present invention is that overcoming the deficiencies of the prior art and provide a kind of novel surfactant Application method on iron ore reverse flotation, solve existing fatty amines collecting agent is poor to iron ore selectivity, dosage is big, in low temperature Under solubility and bad dispersibility, lead to reverse flotation iron ore concentrate grade and rate of recovery difference, particularly iron ore under cryogenic The problem of reverse flotation effect difference.

In order to solve the above technical problems, the present invention is using the basic conception of technical solution:

The application method of a kind of novel surfactant on iron ore reverse flotation, by the 4- amino-with Formulas I structural formula The bis- dodecyl ammonium bromides -1,2 of 3,5- dihydroxymethyls -1,2-, 4- triazole are used as the collecting agent in iron ore reverse flotation, and starch is Inhibitor, No. 2 oil make foaming agent, and flotation pulp pH value range is pH 5~9, ore grain size be -200 mesh account for 50%~ 100%, flotation temperature is 0-35 DEG C.

The novel surfactant structure is shown in formula I:

When novel surfactant is as collecting agent, flotation pulp pH value range is pH 5~9；Ore grain size is -200 Mesh accounts for 50%~100%.

When novel surfactant is as collecting agent, the amount ranges of novel surfactant are 50~300g/t.

Novel surfactant is used as the operating process of collecting agent are as follows: enters flotation after (a) grinde ore；(b) ore grinding and/ Or floating agent is added in floatation process and sizes mixing, novel surfactant shown in formula I is at least contained in the collecting agent of addition； (c) pass through froth flotation method emersion silicate mineral.

When novel surfactant is used for the collecting agent in reverse floatation of iron ore, starch is added as inhibitor, the dosage of starch For 400~2000g/t；It adds No. 2 oil and makees foaming agent, dosage is 30~100g/t.

After adopting the above technical scheme, the present invention has the advantages that compared with prior art.

(1) there are two close mineral groups for tool in the molecule of the flotation collector of novel surfactant, with mineral surfaces Ability to function is stronger, more preferable to the selectivity of target mineral；

(2) there are two hydrophobic groups for tool in its molecule, increase the hydrophobic ability of collecting agent, to the collecting energy of target mineral Power is stronger, can strengthen the effect of iron ore reverse flotation；

(3) due to molecular structure special in molecule, have the characteristics that Krafft point is low, have at low temperature good Dissolubility and dispersibility；

(4) flotation collector of novel surfactant of the present invention it is strong to the collecting ability of iron ore at low temperature, Selectivity is good, improves the grade and the rate of recovery of iron ore concentrate, solving traditional ammonium salt, dissolubility is poor at low temperature, leads to collecting Agent dosage is big, the low technical problem of the grade and the rate of recovery of iron ore concentrate, the value with good promotion and application.

A specific embodiment of the invention is described in further detail with reference to the accompanying drawing.

Detailed description of the invention

The a part of attached drawing as the application, for providing further understanding of the invention, of the invention is schematic Examples and descriptions thereof are used to explain the present invention, but does not constitute an undue limitation on the present invention.Obviously, the accompanying drawings in the following description Only some embodiments to those skilled in the art without creative efforts, can be with Other accompanying drawings can also be obtained according to these attached drawings.In the accompanying drawings:

Fig. 1 is that the double dodecyl ammonium bromide -1,2,4- triazoles of an embodiment 4- amino -3,5- dihydroxymethyl -1,2- exist The process flow chart applied in iron ore reverse flotation；

Fig. 2 is the process flow chart of novel surfactant flotation kaolinite, pyrophyllite, illite minal；

Fig. 3 is the double dodecyl ammonium bromide -1,2,4- triazoles of another embodiment 4- amino -3,5- dihydroxymethyl -1,2- The process flow chart applied in iron ore reverse flotation；

It should be noted that these attached drawings and verbal description are not intended to the design model limiting the invention in any way It encloses, but illustrates idea of the invention by referring to specific embodiments for those skilled in the art.

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, the technical solution in embodiment is clearly and completely described, the following examples are intended to illustrate the invention, but It is not intended to limit the scope of the invention.

The present invention provides a kind of novel surfactant 4- amino -3,5- dihydroxymethyl -1,2- for iron ore reverse flotation Double dodecyl ammonium bromides -1,2,4- triazole, the novel surfactant structure are shown in formula I:

The application to the novel surfactant as iron ore collecting agent in reverse floatation is said combined with specific embodiments below It is bright.