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Method for detecting content of calcium in solid-core calcium wire

A detection method and technology for calcium content, applied in the field of metallurgical chemical detection and analysis, can solve the problems of cumbersome operation steps and long time-consuming, and achieve the effects of reasonable process, reduced interference, and convenient end point judgment.

Inactive Publication Date: 2021-05-28
SGIS SONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above detection methods all have the defects of cumbersome operation steps and long time-consuming.

Method used

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  • Method for detecting content of calcium in solid-core calcium wire
  • Method for detecting content of calcium in solid-core calcium wire
  • Method for detecting content of calcium in solid-core calcium wire

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Experimental program
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Effect test

Embodiment 1

[0045] Embodiment 1 A kind of detection method of calcium content in solid core calcium wire

[0046] 1. Main instruments and equipment

[0047] Balance, electric furnace, box-type resistance furnace.

[0048] 2. Chemical reagents

[0049] (1) hydrochloric acid (ρ1.19g / mL analytically pure);

[0050] (2) Glacial acetic acid (p1.05g / mL analytically pure);

[0051] (3) Anhydrous alcohol (analytical pure);

[0052] (4) Triethanolamine (1+1)

[0053] (5) potassium hydroxide solution (200g / L);

[0054] (6) Calcein indicator: Grind 0.2g of calcein, 0.12g of thymolphthalein, and 20g of anhydrous potassium sulfate in a mortar, dry it in an oven at 105°C-110°C for 1 hour, cool it and move it into a ground glass bottle , stored in a desiccator.

[0055] (7) Calcium standard solution (0.005mol / L): Weigh the standard calcium carbonate (CaCO 3 ≥99.99%) 0.2502g, add 20mL of hydrochloric acid (1+1), heat to dissolve until clear, boil for a while, cool to room temperature, transfer to a...

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Abstract

The invention belongs to the technical field of metallurgical chemical detection and analysis, particularly relates to a method for detecting the calcium content in a solid-core calcium wire, develops a calcium content detection method which is simple and convenient to operate, low in cost, rapid, efficient and high in accuracy in the solid-core calcium wire, and establishes a method for determining the calcium content in the solid-core wire by using an EDTA (Ethylene Diamine Tetraacetic Acid) titration method. The dissolving effect of glacial acetic acid on calcium in the calcium line sample is fully utilized, so that the sample treatment is simpler and more effective; as hydrochloric acid is not added for treatment in the test, the interference of iron groups during titration can be effectively reduced; meanwhile, the calcein indicator with better pertinence is adopted, color change is clear, and end point judgment is facilitated; in addition, the outer wrapping iron sheet is cleaned, dried and weighed, then the content of each component is calculated, and the method is simple, visual, real, accurate and reliable in data. In general, the method is reasonable in process, safe, reliable, easy and convenient to operate, low in cost, rapid, efficient and capable of meeting the field fast-paced production requirement.

Description

technical field [0001] The invention belongs to the technical field of metallurgical chemical detection and analysis, and in particular relates to a method for detecting calcium content in a solid calcium wire. Background technique [0002] Calcium is a silvery-white crystal with a slightly soft quality. Its content in the earth's crust is 3%, ranking fifth after oxygen, silicon, aluminum, and iron, and mostly exists in the form of ions or compounds. The main compounds of calcium include: calcium carbonate, calcium oxide, calcium hydroxide, calcium peroxide, calcium hydride, calcium chloride, calcium fluoride, calcium carbide, calcium cyanamide, calcium hypochlorite, sulfuric acid, etc. Calcium is chemically active and can form a layer of oxide or nitride film on the surface in the air to prevent further corrosion. Calcium can react with oxygen to generate calcium oxide, react with nitrogen to generate calcium nitride, react with fluorine, chlorine, bromine, iodine, etc. to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16G01N5/00
CPCG01N31/16G01N5/00
Inventor 吴超超赵孟群尚聪亚刘引峰王震陈安为郭婷赵岩曾霞宁安宁
Owner SGIS SONGSHAN CO LTD
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