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Method for identifying water solubility of slag volatile matters sodium fluoride and silicon tetrafluoride

A technology of sodium fluoride and silicon tetrafluoride, used in the field of slag volatile identification, can solve problems such as detector damage

Inactive Publication Date: 2022-01-11
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the current lack of means for accurately detecting high-temperature fluoride volatiles existing in the prior art, and the detection of gas components by mass spectrometry and infrared spectroscopy is likely to cause damage to the detector, and to provide a method for identifying slag volatiles Sodium fluoride and silicon tetrafluoride water-soluble method, the method for identifying the slag volatiles sodium fluoride and silicon tetrafluoride water-soluble has the ability to accurately study the formation temperature and water reaction of volatiles that generate fluorine in slag with temperature Mechanism of effect

Method used

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  • Method for identifying water solubility of slag volatile matters sodium fluoride and silicon tetrafluoride
  • Method for identifying water solubility of slag volatile matters sodium fluoride and silicon tetrafluoride

Examples

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Embodiment 1

[0029] see figure 1 A method for identifying the water solubility of slag volatiles sodium fluoride and silicon tetrafluoride, comprising the steps of:

[0030] Step 1: First prepare the instruments and materials needed for the experiment;

[0031] Step 2: Prepare a sufficient amount of slag samples;

[0032] Step 3: Add an appropriate amount of deionized water into the beaker, and insert the gas outlet tube of the thermogravimeter into the beaker;

[0033] Step 4: Put the slag sample into the thermogravimetric instrument. After a period of time, as the thermogravimetric instrument heats up to a certain temperature, the volatile matter in the slag sample will enter the deionized water in the beaker along with the carrier gas;

[0034] Step 5: After the carrier gas overflows from the surface of the deionized water, the deionized water in the beaker is tested by ICP-OES (plasma emission spectrometry) for changes in the content of Na and Si ions in the water;

[0035] Step 6: ...

Embodiment 2

[0047] see figure 1 A method for identifying the water solubility of slag volatiles sodium fluoride and silicon tetrafluoride, comprising the steps of:

[0048] Step 1: First prepare the instruments and materials needed for the experiment;

[0049] Step 2: Prepare a sufficient amount of slag samples;

[0050] Step 3: Add an appropriate amount of deionized water into the beaker, and insert the gas outlet tube of the thermogravimeter into the beaker;

[0051] Step 4: Put the slag sample into the thermogravimetric instrument. After a period of time, as the thermogravimetric instrument heats up to a certain temperature, the volatile matter in the slag sample will enter the deionized water in the beaker along with the carrier gas;

[0052] Step 5: After the carrier gas overflows from the surface of the deionized water, the deionized water in the beaker is tested by ICP-OES (plasma emission spectrometry) for changes in the content of Na and Si ions in the water;

[0053]Step 6: A...

Embodiment 3

[0065] see figure 1 A method for identifying the water solubility of slag volatiles sodium fluoride and silicon tetrafluoride, comprising the steps of:

[0066] Step 1: First prepare the instruments and materials needed for the experiment;

[0067] Step 2: Prepare a sufficient amount of slag samples;

[0068] Step 3: Add an appropriate amount of deionized water into the beaker, and insert the gas outlet tube of the thermogravimeter into the beaker;

[0069] Step 4: Put the slag sample into the thermogravimetric instrument. After a period of time, as the thermogravimetric instrument heats up to a certain temperature, the volatile matter in the slag sample will enter the deionized water in the beaker along with the carrier gas;

[0070] Step 5: After the carrier gas overflows from the surface of the deionized water, the deionized water in the beaker is tested by ICP-OES (plasma emission spectrometry) for changes in the content of Na and Si ions in the water;

[0071] Step 6: ...

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Abstract

The invention discloses a method for identifying water solubility of slag volatile matters sodium fluoride and silicon tetrafluoride. The method comprises the following steps: 1, firstly, preparing instruments and materials required by an experiment; 2, preparing a sufficient amount of slag samples; 3, adding a proper amount of deionized water into the beaker, and inserting a gas outlet guide pipe of a thermogravimeter into the beaker; and 4, putting the slag samples into a thermogravimeter, enabling volatile matter in the slag samples to enter deionized water in the beaker along with carrier gas after the thermogravimeter is heated to a certain temperature after a period of time. The content of Na, Si and F ions in water is tested through plasma emission spectrum and nuclear magnetism respectively, the generation temperature of the volatile matter generating fluorine along with the temperature in the slag and the reaction mechanism of water can be accurately researched, and the problems that at present, means for accurately detecting the high-temperature fluoride volatile matter are not enough, and a detector is prone to being damaged when gas components are detected through mass spectrum and infrared spectrum are solved.

Description

technical field [0001] The invention relates to the technical field of identification of slag volatiles, in particular to a method for identifying the water solubility of slag volatiles sodium fluoride and silicon tetrafluoride. Background technique [0002] In the iron and steel smelting process, the slag is a slag system based on calcium oxide, silicon dioxide and alumina. In order to reduce the viscosity and melting point of the slag and improve its smelting performance, calcium fluoride, sodium carbonate and other co-solvents need to be added to the slag, but adding The slag after the solvent has the problem of high temperature volatilization. The volatiles are mainly sodium fluoride, silicon tetrafluoride and other components that are easy to pollute air and water. The polluted air will destroy the surrounding air environment, and the polluted water will corrode the continuous casting machine Pollution of groundwater resources will affect human health. To reduce the gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N21/73G01N24/08
CPCG01N5/04G01N21/73G01N24/088
Inventor 余亮韩富年董婧蒙周桢李春梅尹伟
Owner CHONGQING UNIV