Determination method for magnesium oxide in carbide slag

Abstract

The invention discloses a determination method for magnesium oxide in carbide slag. The method comprises the steps that 1, hydrochloric acid and hydrofluoric acid are used for treating to-be-detected carbide slag, perchloric acid is added, smoking occurs to drive away hydrofluoric acid, hydrochloric acid is added, low-temperature heating is conducted to dissolve salts, volume setting is conducted, volume setting is conducted again after hydrochloric acid and a strontium chloride solution are added, and the absorbance is measured at the position where the wave length of an atomic absorption spectrometer is 285.2 nm; 2, magnesium oxide standard solutions with different volumes are taken, volume setting is conducted after hydrochloric acid and a strontium chloride solution are added separately, the absorbance is measured at the position where the wave length of the atomic absorption spectrometer is 285.2 nm, and a calibration curve of the concentration and the absorbance of magnesium oxide is created; 3, the content of magnesium oxide is calculated according to the absorbance measured in the first step and the calibration curve obtained in the second step. The determination method for magnesium oxide in the carbide slag is easy to operate and master, high in accuracy and precision of a determination result, low in pollution and the like, can completely meet detection and analysis requirements and can provide accurate data of components of the carbide slag for utilizing the carbide slag.

Description

technical field [0001] The invention relates to the technical field of metallurgical analysis, in particular to a method for determining magnesium oxide in carbide slag. Background technique [0002] Calcium carbide slag is the waste residue with calcium hydroxide as the main component after the hydrolysis of calcium carbide to obtain acetylene gas. The use of calcium carbide slag can replace limestone to manufacture cement, produce chemical products, produce building materials, and be used for environmental governance. Effective use of calcium carbide slag can not only Bring good economic benefits, environmental benefits, social benefits, and can realize turning waste into wealth. [0003] The main component of carbide slag is Ca(OH) 2 , with a small amount of SiO 2 , MgO, Al 2 o 3 Wait. In the actual production process, it is often necessary to detect the content of magnesium oxide in carbide slag to make a correct evaluation of its quality. However, the data accurac...

AI Technical Summary

Problems solved by technology

However, the data accuracy of existing detection methods needs to be improved

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