Method for detecting iron grade of iron slag

Abstract

The invention relates to a method for detecting the iron grade of iron slag, belonging to the field of detection. The invention solves the technical problem of providing a low-cost method for detecting the iron grade of iron slag. The method of the invention comprises the following steps: determining the densities of the iron slag and the slag respectively; and using the following formula to calculate the iron grade of the iron slag, wherein rho-iron slag represents the density of the iron slag, rho-slag represents the density of the slag, rho-iron represents the density of iron, CV represents the volume content of the iron in the iron slag and Cm represents the mass content of the iron in the iron slag, namely the iron grade. The method of the invention has the advantages of simple device, low detection cost, high detection speed and relatively accurate detection results, provides a novel option for the field and has wide application prospect.

Description

technical field [0001] The invention relates to a method for detecting the iron grade of iron slag and belongs to the field of detection. Background technique [0002] The blast furnace slag discharged from the iron-making blast furnace becomes heavy slag after slow cooling treatment, which generally contains about 3-5% metallic iron. Through crushing, screening, magnetic separation and other mineral processing processes, the slag iron with high iron grade can be enriched and used. It is used for ironmaking or steelmaking in the furnace. The iron grade of iron slag is generally 30-90%, and the particle size is mostly 10-100mm. [0003] The iron grade of slag iron has guiding significance for the ingredients of ironmaking and steelmaking, so the detection of slag iron grade is more important. The traditional detection method is "potassium dichromate titration method". The sample preparation requirements are strict, and the sample needs to be ground to 80 microns, and the sa...

AI Technical Summary

Problems solved by technology

The average particle size of iron slag is relatively large, and it is difficult to grind metallic iron, so it is difficult to prepare samples and the cost of testing is high

[0004] The patent application "On-line Mineral Material Iron Taste Analysis and Detection Method" (Notice No. CN 101349660A) discloses a method for measuring iron grade by using Compton scattering and electron pair effect between gamma rays and materials, which requires high-end detection Equipment, the calculation process is complicated, and the detection cost is high. It is mainly used to detect the iron grade of the ore transported by the belt in the large mine or beneficiation plant

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