Emulsified diesel additive for coal flotation collector and preparation method thereof

A technology for emulsification of diesel oil and additives, applied in flotation, solid separation and other directions, can solve the problems of easy demulsification and stratification, complex emulsification process and high cost, and achieves lower production costs, good collection performance, and improved clean coal yield. Effect

Inactive Publication Date: 2011-02-09
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned emulsification process is relatively complicated, which is not conducive to large-scale application. Therefore, enhancing the self-emulsification performance of emulsifiers is an effective means to simplify the emulsification process.
[0005] From the published literature and patents, the general appearance of emulsified diesel oil used for coal slime flotation is opaque and milky white, and most of them are thermodynamically unstable systems. The emulsifier formula is complex and costly, the storage time is short, and it is easy to demulsify and stratify

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 80wt% of Span 80, 10wt% of Tween 80 and 10wt% of calcium dodecylbenzenesulfonate were respectively added to the reactor, and the mixture was stirred for 10 minutes under the condition of rotating speed of 600 revolutions per minute to obtain additives.

[0022] Add 60wt% 0# national standard diesel oil to the homogenizer, add 9wt% of the above additives, stir at 800 rpm for 5 minutes, add 45wt% water during stirring, homogenize at 2950 rpm for 30 minutes to obtain milky white emulsified diesel oil.

Embodiment 2

[0024] 75wt% of Span 80, 16wt% of Tween 80 and 9wt% of calcium dodecylbenzenesulfonate were respectively added to the reactor, and the mixture was stirred for 9 minutes under the condition of 800 revolutions per minute to obtain the additive.

[0025] Add 50wt% 0# national standard diesel oil to the homogenizer, add 8wt% of the above additives, stir at 800 rpm for 8 minutes, add 42wt% water during stirring, homogenize at 2900 rpm for 25 minutes, let stand for defoaming for 30 minutes, and obtain a milky white Emulsified diesel.

Embodiment 3

[0027] 67wt% of Span 80, 25wt% of Tween 80 and 8wt% of calcium dodecylbenzenesulfonate were respectively added to the reactor, and the mixture was stirred at 1200 rpm for 8 minutes to obtain the additive.

[0028] Add 40wt% 0# national standard diesel oil to the homogenizer, add 6wt% of the above additives, stir at 800 rpm for 5 minutes, add 54wt% water during stirring, homogenize at 2850 rpm for 30 minutes, let stand for defoaming for 30 minutes, and obtain a milky white Emulsified diesel.

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Abstract

The invention relates to an emulsified diesel additive for a coal flotation collector and a preparation method thereof. The additive comprises the following components in percentage by weight: 60 to 80 percent of sorbitan mono-fatty acid ester, 10 to 30 percent of polyoxyethylene sorbitan mono-fatty acid ester and 5 to 10 percent of sulphosalts anionic surfactant. The method comprises the following steps of: adding Span 80, Tween 80 and calcium dodecyl benzene sulfonate into a reactor, and stirring for 5 to 10 minutes under the rotate speed of between 600 and 1,200 r/min to obtain the additive. In the application of the additive, diesel and the additive are added into the reactor, stirred and added with water, and the mixture is stirred and stood for defoaming for 20 to 40 minutes to obtain emulsified diesel. An emulsifier of the invention has the simple composition, excellent performance and high stability; products can replace the diesel and are used as the collector in coal flotation; and the diesel collector can improve the recovery rate of clean coal by 1 to 2 percent and tailing ash content by 1 to 3 percent, reduce the production cost effective and increase the economic benefits.

Description

technical field [0001] The invention relates to an emulsified diesel fuel additive and a preparation method thereof, in particular to an emulsified diesel fuel additive used for a coal flotation collector and a preparation method thereof. Background technique [0002] With the mechanization of coal mining, especially the application of fully mechanized mining equipment in coal mining, the content of fine-grained coal in raw coal gradually increases. The role of selection in coal preparation is becoming more and more important. There are many ways to improve flotation efficiency, among which the simplest and most effective is to improve the flotation reagent. The most commonly used collectors are kerosene and light diesel, but they are insoluble in water, so their consumption is often too high in actual use. Both theory and practice have proved that using the appropriate method to emulsify the collector can not only reduce the dosage of the agent, but also improve the flota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D101/02B03D1/016
Inventor 刘强常宏宏田秀萍李兴魏文珑
Owner TAIYUAN UNIV OF TECH
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