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Method for measuring content of sodium tetraborate in sintering promoting agent

A technology of sintering synergist and sodium tetraborate, which is applied in chemical analysis by titration, material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve the problem of blast furnace ironmaking Damage and other problems, to achieve the effect of short operation process, accurate results, accurate and reliable data

Inactive Publication Date: 2015-04-22
INNER MONGOLIA BAOTOU STEEL UNION
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Problems solved by technology

However, too much sodium ion introduced in blast furnace ironmaking will also cause certain damage to blast furnace ironmaking

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  • Method for measuring content of sodium tetraborate in sintering promoting agent
  • Method for measuring content of sodium tetraborate in sintering promoting agent
  • Method for measuring content of sodium tetraborate in sintering promoting agent

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] In the prior art, there is no standard determination method for the determination of sodium tetraborate in the sintering synergist for the time being, so it is necessary to find a rapid determination method for fast, accurate and efficient determination of sodium tetraborate in the sintering synergist in production basis is provided.

[0024] This method is based on the acid-base titration test, firstly dissolve the sample with water, filter after heating and cooling, neutralize the filtrate with hydrochloric acid, heat and boil to remove carbon dioxide and then filter again; add p-nitrophenol indicator to the filtrate, titrate with nitric acid standard Drop the solution until the yellow color disappears, add glycerol and sodium tetraborate to react to form...

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Abstract

The invention discloses a method for measuring content of sodium tetraborate in a sintering promoting agent. The method is based on an acid base titration test, and comprises the following steps: dissolving a sample in water, heating, cooling, filtering, neutralizing the filtrate by using hydrochloric acid, heating and boiling to remove carbon dioxide, and filtering again; adding a paranitrophenol indicator into the filtrate, titrating until yellow color disappears by using a nitric acid standard titration solution, and adding glycerin to react with sodium tetraborate so as to generate glycerol borate; by taking phenolphthalein as an indicator, excessively titrating to become slight red by using sodium hydroxide; performing back titration on the excessive sodium hydroxide until the red color disappears by using the nitric acid standard titration solution, ending the operation, obtaining the consumption of the standard titration solution along with an accompanying blank experiment, and calculating to obtain the content of sodium tetraborate in the sample according to the volume difference of the consumed standard titration solution. The method has the characteristics of simplicity, convenience, rapidness, accuracy and reliability.

Description

technical field [0001] The invention relates to the technical field of material detection and analysis, in particular to a method for measuring the content of sodium tetraborate in a sintering synergist. Background technique [0002] Sintering synergist is a chemical additive composed of a variety of non-energy inorganic chemical raw materials according to the formula ratio. It is often used in the sintering and smelting of iron concentrate powder, nickel-iron ore powder and other non-ferrous metals. The main function of the sintering synergist is to increase the sintering speed and sinter strength, reduce the pulverization rate, improve and improve the quality of ore formation, and realize the economical aspects of production increase, consumption reduction, and environmental protection under the condition of constant sintering production conditions. benefits and social benefits. [0003] Sodium tetraborate in the sintering synergist is a melting agent, which can reduce th...

Claims

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Application Information

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IPC IPC(8): G01N31/16G01N31/22G01N21/79
Inventor 戴文杰常欢刘建华王宴秋
Owner INNER MONGOLIA BAOTOU STEEL UNION
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