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Method for detecting iron content of quartz sand by using magnetic susceptibility

A technology of quartz sand and magnetic susceptibility, applied in the direction of material magnetic variables, etc., can solve the problems of large pollution and long detection time (a sample takes several hours, etc., to improve work efficiency and save detection time.

Active Publication Date: 2014-10-08
ANHUI SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the measurement process, acids such as HF acid are used to digest the quartz sand, so these measurement methods have two major shortcomings: one is that the detection time is long (a sample needs several hours), and the other is that the chemical reagents used are harmful to the environment. pollution

Method used

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  • Method for detecting iron content of quartz sand by using magnetic susceptibility
  • Method for detecting iron content of quartz sand by using magnetic susceptibility
  • Method for detecting iron content of quartz sand by using magnetic susceptibility

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A method for detecting iron content in quartz sand by using magnetic susceptibility, comprising the following steps:

[0023] (1), dry the quartz sand sample in an oven at 100°C;

[0024] (2) Prepare sample preparation tools and materials: scissors, hard white paper, non-magnetic tape, 2cm×2cm×2cm non-magnetic plastic sample box;

[0025] (3) Sample preparation: first prepare a non-magnetic plastic sample box, then take a piece of white paper slightly smaller than the cover of the sample box, write the sample number and put it in the box, weigh the quality of the sample box on an electronic balance and register On the notepad prepared in advance; then use a piece of folded hard white paper to take the quartz sand sample and put it into a non-magnetic plastic sample box, fill the sample, compact it, seal it, weigh it, and calculate the quartz sand sample. the quality of the sample;

[0026] (4) Measurement of magnetic susceptibility: first use non-magnetic tape to seal...

Embodiment 2

[0033] A method for detecting iron content in quartz sand by using magnetic susceptibility, comprising the following steps: (1), drying the quartz sand sample in an oven at 105°C; steps (3), (4), and (5) are the same as in Example 1 Same, in the step (5), select the quartz sand produced in another place, in the standard sample mixed with iron-containing minerals, the mass content of iron measured by chemistry is respectively 151ppm, 172ppm, 194ppm, 209ppm, 231ppm, 253ppm , 271ppm, 294ppm, 313ppm, 322ppm. Make a schematic diagram of the linear correlation between iron content and magnetic susceptibility in quartz sand figure 2 As shown, x in the expression y=0.0169x-2.7259 represents the mass percentage of iron, y represents the mass magnetic susceptibility, and R represents the correlation coefficient between the iron content and the mass magnetic susceptibility. Select 60-180 mesh, 140-160 mesh, 200-300 mesh quartz sand, the chemical method measurement results are 173ppm, 1...

Embodiment 3

[0035]A method for detecting iron content in quartz sand by using magnetic susceptibility, comprising the following steps: (1), drying the quartz sand sample in an oven at 110°C; steps (3), (4), and (5) are the same as in Example 1 2, the same, in the step (5), choose the quartz sand produced in another place, in the standard sample mixed with ferrous minerals, the mass content of iron is respectively 185ppm, 207ppm, 239ppm, 267ppm, 293ppm with chemical records , 322ppm, 347ppm, 358ppm, 379ppm, 399ppm. Make a schematic diagram of the linear correlation between iron content and magnetic susceptibility in quartz sand image 3 As shown, x in the expression y=0.0164x-2.2888 represents the mass percentage of iron, y represents the mass magnetic susceptibility, and R represents the correlation coefficient between the iron content and the mass magnetic susceptibility. Select 60-180 mesh, 140-160 mesh, 200-300 mesh quartz sand, the chemical method measurement results are 203ppm, 186p...

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Abstract

The invention relates to a detection method for iron content and provides a method for detecting iron content of quartz sand by using magnetic susceptibility. The method is characterized by comprising the following steps: (1) drying a quartz sand sample; (2) preparing sample making tools and materials; (3) preparing a sample; (4) measuring magnetic susceptibility; (5) drafting a standard curve; and (6) testing iron content. The invention adopts an environment-friendly and rapid magnetic measurement method for detection of the content of elemental iron in quartz sand. During detection, no chemical is needed for dissolving of quartz sand, so detection time can be substantially saved; normally, the magnetic measurement method only takes ten minutes at most for detection of one sample, and no pollution is posed to the environment during detection.

Description

Technical field: [0001] The invention relates to a method for detecting iron content, in particular to a method for detecting iron content in quartz sand by using magnetic susceptibility. Background technique: [0002] Quartz sand is a kind of quartz granules made by crushing quartz stone. Quartz stone is a hard, wear-resistant and chemically stable silicate mineral. Its main mineral component is SiO 2 , the color of quartz sand is milky white, or colorless and translucent, with a hardness of 7. Quartz sand is an important industrial mineral raw material. At present, atomic absorption spectrometry, colorimetry, and ICPP-AES (inductively coupled plasma emission spectrometer) are mainly used to detect the content of iron in quartz sand. The measurement steps are: 1. Preparation of standard solution, 2. Sample dissolution, and 3. Determination. In the measurement process, acids such as HF acid are used to digest the quartz sand, so these measurement methods have two major shor...

Claims

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Application Information

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IPC IPC(8): G01N27/72
Inventor 李勇
Owner ANHUI SCI & TECH UNIV
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