Flotation promoter of coal slime and method for preparing flotation reagent

A coal slime flotation and accelerator technology, which is applied in flotation, solid separation and other directions, can solve the problems of increased production cost of coal preparation, unreported, and high production cost, so as to reduce the time required for flotation and improve flotation. Efficiency and applicability

Active Publication Date: 2013-07-17
CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST
View PDF7 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2012, the amount of floating dry coal slime in my country was about 450 million to 500 million tons. Based on the calculation of 1.3 kg of collector required for each ton of dry coal slime in flotation, the national consumption of coal collectors was about 600,000 tons. Increased production costs and impact on the process operation of the flotation system
[0005] As can be seen from the prior art, the problems in these technologies include: the flotation accelerators used are all higher fatty acid alcohol ester surfactants, and this type of accelerator is only for traditional non-composite reag

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
  • Flotation promoter of coal slime and method for preparing flotation reagent
  • Flotation promoter of coal slime and method for preparing flotation reagent
  • Flotation promoter of coal slime and method for preparing flotation reagent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The flotation accelerator consists of the following substances in mass percentage:

[0032] Bisamide diester-based nonionic gemini surfactant: 60%, OP-10: 20%, O-20: 10%, Span-60: 10%.

[0033] Among them, in the general formula of bisamide diester-based nonionic gemini surfactant, m=1, n=1, R 1 is an alkyl group with 0 carbon atoms, R 2 is an alkyl group with 5 carbon atoms, R 3 is an alkyl group with 1 carbon atom; R 4 is an alkyl group having 5 carbon atoms.

[0034] The method for preparing flotation agent with coal slime flotation accelerator, its steps are as follows:

[0035] Prepare the flotation agent according to the ratio of accelerator: collector or compound agent = 0.5:100,

[0036] The first step: Add the collector or compound agent to the bisamide diester-based nonionic gemini surfactant under heating conditions, and stir until the bisamide diester-based nonionic gemini surfactant is completely dissolved. Controlled at 25°C;

[0037] Step 2: Add Sp...

Embodiment 2

[0045]1. The composition of the flotation accelerator is: bisamide diester-based nonionic gemini surfactant: 40%, OP-20: 20%, O-10: 20%, Span-80: 10%, Tween -60: 10%.

[0046] Among them, in the general formula of bisamide diester-based nonionic gemini surfactant, m=2, n=2, R 1 is an alkyl group with 5 carbon atoms, R 2 is an alkyl group with 1 carbon atom, R 3 is an alkyl group with 5 carbon atoms; R 4 is an alkyl group having 1 carbon atom.

[0047] 2. Preparation of flotation agents:

[0048] Prepare the flotation agent according to the ratio of accelerator: collector or compound agent=0.5:100, and the method for preparing the flotation agent is as follows:

[0049] The first step: Add the collector or compound agent to the bisamide diester-based nonionic gemini surfactant under heating conditions, and stir until the bisamide diester-based nonionic gemini surfactant is completely dissolved. Controlled at 85°C;

[0050] Step 2: Add Span-80 to the collector or composit...

Embodiment 3

[0058] 1. The composition of the flotation accelerator is: bisamide diester-based nonionic gemini surfactant: 70%, OP-30: 15%, O-15: 15%.

[0059] Among them, in the general formula of bisamide diester-based nonionic gemini surfactant, m=2, n=2, R 1 is an alkyl group with 3 carbon atoms, R 2 is an alkyl group with 3 carbon atoms, R 3 is an alkyl group with 3 carbon atoms; R 4 is an alkyl group having 3 carbon atoms.

[0060] 2. Preparation of flotation agents:

[0061] Prepare the flotation agent according to the ratio of accelerator: collector or compound agent=0.5:100, and the method for preparing the flotation agent is as follows:

[0062] The first step: Add the collector or compound agent to the bisamide diester-based nonionic gemini surfactant under heating conditions, and stir until the bisamide diester-based nonionic gemini surfactant is completely dissolved. Controlled at 55°C;

[0063] Step 2: Add OP-30 and O-15 directly to water in proportion and mix well.

...

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 flotation promoter of coal slime. The flotation promoter comprises the following materials in percent by weight: 40%-70% of a gemini surfactant, 20%-40% of a polyoxyethylene ether surfactant and 0%-20% of an aliphatic ester surfactant. The invention also discloses a method for preparing a flotation reagent from the flotation promoter of the coal slime. The flotation promoter disclosed by the invention has the advantages that since a novel surfactant-bisamide diester group non-ionic gemini surfactant is mainly adopted as a main component, not only can the flotation effect be obviously improved, but also the used quantity of the flotation reagent can be reduced, the adaptability to different coal types and different flotation reagents is strong, the problem of poor cooperativity of the promoter to different flotation reagents in the prior art is solved, the emulsification is not needed, the defects in the prior art that the emulsification is required to be carried out in advance, even the original flotation process is changed and the operation is fussy are overcome, so that the purposes of reducing the reagent consumption and improving the flotation efficiency are achieved.

Description

technical field [0001] The invention relates to a coal slime flotation accelerator and a method for preparing a flotation agent, which are mainly used for coal slime flotation. Background technique [0002] my country is one of the countries where coal is the main energy source. 70% of energy and 60% of chemical raw materials come from coal. With the improvement of coal mining mechanization and the aggravation of poor, fine and miscellaneous conditions of industrial deposits, the proportion of fine-grained coal slime in the selected raw coal continues to increase, accounting for 20% to 30% of the raw coal. There are many fine-grained coal slime separation technologies, but in terms of the current development level of coal preparation technology at home and abroad, flotation is still the most effective method for fine-grained coal slime separation. [0003] The coal slime flotation process in my country's coal preparation plants generally has the problems of large flow, low ...

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
IPC IPC(8): B03D1/016
Inventor 陆丽园张东杰王晓云周晓红周易坤宋家良
Owner CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST
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