Preparation method of sample for chemical analysis of fire-resistant stemming material

A fire-resistant clay and fire-resistant technology, which is applied in the field of sample preparation for chemical analysis of fire-resistant clay, can solve the problems of tar volatilization loss, decreased accuracy, large deviation, etc., and achieves simple preparation method, high accuracy, and good representativeness Effect

Pending Publication Date: 2021-03-12
WUHAN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the provisions of YB/T 4196-2018 for anhydrous blast furnace clay, when preparing samples for chemical analysis, the tar in the sample is volatilized and lost, and the composition and content of tar in the material cannot be measured. The total volatile content of fire-resistant clay is The accuracy of the measurement results is also reduced because it is inconsistent with the spe

Method used

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Examples

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Effect test

preparation example Construction

[0024] A method for preparing samples for chemical analysis of fire-resistant gun mud. The steps of the preparation method described in this specific embodiment are:

[0025] Step 1. Weighing the solid granular material: the solid granular material w weighed for the first time 2 = 50g, the solid granular material w weighed for the second time 3 =(4~9)×w 1 , accurate to 1mg.

[0026] The solid granular material is quartz or corundum.

[0027] Step 2, first randomly select 5 to 10 sampling points in the fire-resistant clay for chemical analysis, and then uniformly obtain samples of fire-resistant clay for chemical analysis at each sampling point. Clay sample w 1 =10~15g, accurate to 1mg.

[0028] Step 3, first weigh the solid particle material w for the first time in step 1 2 Place it in a weighing pan, and then take the fire-resistant clay samples w to be chemically analyzed at each sampling point in step 2 1 Placed in the weighing pan, then the solid particle material ...

Embodiment 1

[0037] A method for preparing samples for chemical analysis of fire-resistant gun mud. The steps of the preparation method described in this embodiment are:

[0038] Step 1. Weighing the solid granular material: the solid granular material w weighed for the first time 2 = 50g, the solid granular material w weighed for the second time 3 =9w 1 =9×10g=90g, accurate to 1 mg.

[0039] The solid granular material is quartz.

[0040] Step 2, first randomly select 5 sampling points in the fire-resistant clay for chemical analysis, then obtain the fire-resistant clay samples for chemical analysis evenly at each sampling point, and the fire-resistant clay samples for chemical analysis obtained at each sampling point sample w 1 =10g, accurate to 1mg.

[0041] Step 3, first weigh the solid particle material w for the first time in step 1 2 Place it in a weighing pan, and then take the fire-resistant clay samples w to be chemically analyzed at each sampling point in step 2 1 Placed...

Embodiment 2

[0045] A method for preparing samples for chemical analysis of fire-resistant gun mud. The steps of the preparation method described in this embodiment are:

[0046] Step 1. Weighing the solid granular material: the solid granular material w weighed for the first time 2 = 50g, the solid granular material w weighed for the second time 3 =6w 1 =6×12g=72g, accurate to 1mg.

[0047] The solid granular material is corundum.

[0048] Step 2, first randomly select 6 sampling points in the fire-resistant clay for chemical analysis, then obtain the fire-resistant clay samples for chemical analysis evenly at each sampling point, and the fire-resistant clay samples for chemical analysis obtained at each sampling point sample w 1 =12g, accurate to 1mg.

[0049]Step 3, first weigh the solid particle material w for the first time in step 1 2 Place it in a weighing pan, and then take the fire-resistant clay samples w to be chemically analyzed at each sampling point in step 2 1 Placed...

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Abstract

The invention relates to a preparation method of a sample for chemical analysis of a fire-resistant stemming material. According to the technical schemes, the method comprises the following steps of:putting solid particles w2 weighed for the first time into a weighing tray, randomly selecting 5-10 sampling points, and uniformly obtaining a fire-resistant stemming material sample w1 to be subjected to chemical analysis; putting the w1 in the weighing tray; putting solid particles w3 weighed for the second time into the weighing tray to obtain a sample preparation material in the weighing tray;transferring all the sample preparation material in the weighing tray into a material bowl of a vibration sample grinding machine for a laboratory, and grinding the material for 30-60 seconds to obtain a ground material; and taking down the material bowl, scraping up all the ground material adhered to the material bowl, and grinding the material for 50-60 seconds to obtain the sample for chemicalanalysis of the fire-resistant stemming material. The preparation method has the advantages of uniform mixing and simplicity; the prepared sample for chemical analysis of the fire-resistant stemmingmaterial can be used for determining volatile lost chemical components; and the accuracy of determination results of the method is high.

Description

technical field [0001] The invention belongs to the technical field of samples for chemical analysis of fire-resistant gun mud. In particular, it relates to a method for preparing samples for chemical analysis of fire-resistant gun mud. Background technique [0002] At present, asphalt, tar or resin are often used as binders for refractory gun mud, and carbon materials such as coke graphite and other refractory materials such as corundum, alumina, silicon carbide, magnesia, etc. are mixed to prepare mud-like materials (Hu Baolei, Zhou Yongmao .Development status and direction of blast furnace clay, Refractory and Lime, 2013, 38(5):14~17), so refractory clay contains solid particles, subdivided and fluid viscous substances, and these refractory clay Chemical analysis requires the preparation of analytical samples. [0003] Due to the large difference in the composition of refractory clay, the sampling volume for chemical analysis is relatively small, and the samples are pre...

Claims

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Application Information

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IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 徐建平陈荣李明昌周双请朱青友尹玉成
Owner WUHAN UNIV OF SCI & TECH
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