Schiff base caproate mineral flotation collecting agent as well as preparation method and application thereof

A mineral flotation and Schiff base technology, applied in flotation, solid separation and other directions, can solve the problems of poor frost resistance, poor dispersion and low selectivity, and achieve poor frost resistance and good selectivity. , the effect of strong collecting ability

Active Publication Date: 2015-07-29
CENT SOUTH UNIV
View PDF12 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Flotation collectors such as oleic acid and oxidized paraffin soaps in the prior art have defects such as low selectivity, poor frost resistance, and poor dispersibility. The purpose of the present invention is to provide a class of Schiff base hexanoate with carbon-nitrogen double bond and carboxyl structure, which has good selective adsorption to non-sulfide minerals, good water solubility and good dispersibility, and can be used as a mineral flotation collector

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Schiff base caproate mineral flotation collecting agent as well as preparation method and application thereof
  • Schiff base caproate mineral flotation collecting agent as well as preparation method and application thereof
  • Schiff base caproate mineral flotation collecting agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Preparation of sodium 6-(2-ethyl-2-enhexyl)iminocaproate:

[0056] Add 5.66 parts of caprolactam into the reactor with a stirring device, melt it at a temperature of 80°C, and dissolve 2 parts of solid sodium hydroxide in 3 parts of distilled water to make an alkali solution, and add the alkali solution Into the melted caprolactam liquid, raise the temperature to 100°C, stir for 2 hours, and the white solid precipitated after cooling to room temperature is sodium 6-aminocaproate.

[0057] In the reactor, add 7.56 parts of 2-ethyl-2-hexenal, 0.48 parts of p-toluenesulfonic acid, 60 parts of toluene and the 6-aminocaproic acid sodium obtained by the above-mentioned hydrolysis, and install the water separator. React for 3 hours at a reaction temperature of 115°C. After removing the toluene by distillation under reduced pressure, the solid was washed twice with anhydrous ether and acetone in turn, and the obtained orange-red solid was dried in a vacuum dryer at 50°C for 24 ...

Embodiment 2

[0059] Preparation of sodium 6-(2-ethyl-2-enhexyl)iminocaproate:

[0060] Add 11.32 parts of caprolactam into the reactor with a stirring device, melt it at a temperature of 80°C, and dissolve 4 parts of solid sodium hydroxide in 6 parts of distilled water to make an alkali solution, and add the alkali solution to Into the melted caprolactam liquid, raise the temperature to 100°C, stir for 2 hours, and the white solid precipitated after cooling to room temperature is sodium 6-aminocaproate.

[0061] In the reactor, add 15.12 parts of 2-ethyl-2-hexenal, 0.95 parts of p-toluenesulfonic acid, 80 parts of toluene and the 6-aminocaproic acid sodium obtained by the above-mentioned hydrolysis successively, install the water separator, React for 4 hours at a reaction temperature of 115°C. After toluene was removed by distillation under reduced pressure, the solid was washed twice with anhydrous ether and acetone in turn, and the obtained orange-red solid was dried in a vacuum dryer at...

Embodiment 3

[0063] Preparation of sodium n-octyliminocaproate:

[0064] Add 11.32 parts of caprolactam into the reactor with a stirring device, melt it at a temperature of 80°C, and dissolve 4 parts of solid sodium hydroxide in 6 parts of distilled water to make an alkali solution, and add the alkali solution to Into the melted caprolactam liquid, raise the temperature to 100°C, stir for 2 hours, and the white solid precipitated after cooling to room temperature is sodium 6-aminocaproate.

[0065] Add 15.12 parts of n-octanal, 0.95 parts of p-toluenesulfonic acid, and 80 parts of toluene to the reactor in sequence, and drop the molten sodium 6-aminocaproate liquid prepared by the above hydrolysis at 100°C. After the addition is completed, Install a water separator, react at a reaction temperature of 115°C for 4 hours, and distill off the toluene under reduced pressure, wash the solid twice with anhydrous ether and acetone in turn, and dry the obtained yellow solid in a vacuum dryer at 50°...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a Schiff base caproate mineral flotation collecting agent, a preparation method thereof and application thereof. A Schiff base caproate has an aliphatic group and a carbon-nitrogen double bond and carboxyl structure and is prepared by performing ammonia aldehyde condensation reaction on hydrolyzed caprolactam and aliphatic aldehyde. The Schiff base caproate has the characteristics of good water solubility, high dispersibility and high selective adsorption capacity to a target mineral, serves as the flotation collecting agent of bauxite, ilmenite, scheelite, wolframite, rare earth mine, tin ore, fluorite ore or manganese carbonate ore, and can effectively float and separate available minerals; furthermore, the preparation method of the Schiff base caproate is simple in process, easy in control on operation, low in cost, and high in product yield, and industrial production is easy to realize.

Description

technical field [0001] The invention relates to a Schiff base hexanoate mineral flotation collector and a preparation method and application thereof, belonging to the field of mineral flotation. Background technique [0002] Fatty acids and their soaps, because they contain active carboxyl functional groups, can effectively separate useful minerals from gangue, and are a class of excellent non-sulfide ore flotation collectors. Since higher fatty acids are solid at room temperature, difficult to dissolve in water, and inconvenient to use, oleic acid, linoleic acid, linolenic acid, tall oil fatty acid and liquid saturated fatty acid are commonly used, and are currently the most commonly used in industrial flotation processes. It is oleic acid and its modified products and oxidized paraffin soap. Chinese patent (publication number is CN102921537A) discloses a kind of method of flotation limonite with oleic acid; The collector that forms is used for the method of ilmenite, iro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/01B03D101/02
Inventor 钟宏许海峰王帅曹占芳刘广义
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap