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Method of evaluating collecting performance of floatation collecting agent to andalusite

An evaluation method and technology for collectors, applied in flotation, solid separation, etc., can solve problems such as differences in performance evaluation of flotation collectors, cumbersome experimental methods, and time-consuming

Active Publication Date: 2013-04-17
WUHAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to inconsistent experimental conditions and various experimental systems, there are often significant differences in the performance evaluation of the same flotation collector in different laboratories.
In addition, the experimental method is cumbersome, time-consuming and laborious, resulting in a waste of manpower and financial resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for evaluating the collection performance of flotation collectors on andalusite. The flotation collectors are sodium oleate and sodium dodecylsulfonate. Its evaluation method is as follows:

[0028] The first step is to establish the structure model of andalusite crystal. Select a smallest unit of the crystal structure of andalusite - the unit cell as a calculation model, and perform quantum chemical calculations on its chemical properties; the crystal structure of andalusite is a property of regular repeated arrangements in three-dimensional space, according to the crystal structure of andalusite Cell parameters (a, b, c, α, β, γ), and the andalusite structure model to be studied was established using the Material Studio 4.2 program; and then the andalusite structure model was converted into a “**.GJF” file using the Chemdraw 2004 program.

[0029] The second step is to establish the molecular structure models of sodium oleate and sodium dodecylsulfonate. Acc...

Embodiment 2

[0041] A method for evaluating the collection performance of flotation collectors on andalusite. The flotation collectors are hydroxamic acid and dodecylamine. Its evaluation method is as follows:

[0042] The first step is to establish the structure model of andalusite crystal. Select a smallest unit of the crystal structure of andalusite - the unit cell as a calculation model, and perform quantum chemical calculations on its chemical properties; the crystal structure of andalusite is a property of regular repeated arrangements in three-dimensional space, according to the crystal structure of andalusite Cell parameters (a, b, c, α, β, γ), and the andalusite structure model to be studied was established using the Material Studio 4.2 program; and then the andalusite structure model was converted into a “**.GJF” file using the Chemdraw 2004 program.

[0043] The second step is to establish the molecular structure models of hydroxamic acid and dodecylamine. According to the ch...

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Abstract

The invention relates to a method of for evaluating the collecting performance of a floatation collecting agent to andalusite. The technical scheme is: firstly establishing an andalusite crystal structural model and a floatation collecting agent molecular structural model, so that total energy ET (andalusite) and ET (collecting agent) of the andalusite crystal structural model and the floatation collecting agent molecular structural model can be obtained by adopting a specific Hareree-Fock-Roothaan method of quantum chemistry Ab initio method; then carrying out molecule geometry optimization calculation on the structural models of an andalusite-floatation collecting agent system, thus the total energy ET (andalusite-collecting agent) of the andalusite-floatation collecting agent system isobtained; and finally acquiring the emitted heat amount delta ET when the floatation collecting agent is absorbed on the andalusite, if the absolute value of the delta ET is greater, the collecting capability of the floatation collecting agent to the andalusite is high. According to the size of the bond order of the andalusite-floatation collecting agent, the property and instensity of the bond formed by the surface of the andalusite and the floatation collecting agent are evalued. The method provided by the invention is simple and reasonable, is easy to operate, has low cost, and has practical value.

Description

technical field [0001] The invention belongs to the technical field of flotation collectors. Specifically relates to a method for evaluating the collection performance of flotation collectors on andalusite. Background technique [0002] Quantum mechanics is one of the most important scientific discoveries of the 20th century. Theoretical physics, quantum chemistry and related calculations developed on the basis of quantum mechanics have opened up another way to the microscopic world for us. For a long time, when studying flotation agents and their effects, people mostly use experimental methods as the main method, supplemented by theoretical analysis. For example, before the 1970s, it was often used to measure the concentration change, adsorption rate, adsorption strength, adsorption amount, and adsorption heat of pure mineral particles before and after adsorption of flotation agents on the surface of pure mineral particles to infer the adsorption properties of agents and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00
Inventor 周灵初张一敏
Owner WUHAN UNIV OF SCI & TECH
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