Method for measuring the mixing uniformity degree of pellet raw material

A technology for uniform mixing and mixing of raw materials, which is applied in the preparation of test samples and measurement of color/spectral characteristics, etc., and can solve the problem of not being able to accurately know the degree of uniformity of raw materials in the pellet mixer

Active Publication Date: 2020-06-05
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application solves the technical problem in the prior art that it is impossible to accurately know the degree of uniformity of the raw materials of the pellet mixer by providing a method for measuring the degree of uniformity of the raw materials of the pellets

Method used

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  • Method for measuring the mixing uniformity degree of pellet raw material
  • Method for measuring the mixing uniformity degree of pellet raw material
  • Method for measuring the mixing uniformity degree of pellet raw material

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Experimental program
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Embodiment 1

[0028] This embodiment provides a method for measuring the uniformity of pellet raw material mixing, including:

[0029] S101: Obtain the pellet raw material to be measured, add iodate to the pellet raw material to be measured and mix evenly, to obtain a pellet mixed raw material containing iodate.

[0030] In the actual production process of pellets, in order to detect the degree of uniformity of the pelletizing mineral powder (the pellet raw material to be measured) mixed in the mixer, this program mainly uses iodate as a tracer when the raw materials are mixed. Then sample the mixed raw materials and tracers, and test the content of each tracer to reflect the mixing uniformity of raw materials.

[0031] The iodate used as a tracer, firstly, does not exist in the pelletizing mineral powder; secondly, the iodate does not chemically react with the pelletizing mineral powder, that is, the iodate is There will be no change in mass and concentration before and after mixing. The...

Embodiment 2

[0082] (1) Preparation of pellet mixed raw materials:

[0083] After adding the pellets with mineral powder (10kg in total) into the mixer, add potassium iodate solid (3g) into the mixer, and mix well.

[0084] (2) Preparation of detection solution:

[0085] Prepare 1.2g / L potassium iodide KI solution: weigh 0.6g KI, dissolve it in 200ml water, and dilute to 500ml.

[0086] Prepare 0.1mol / L dilute hydrochloric acid: dilute concentrated hydrochloric acid to make 0.1mol / L.

[0087] (3) Determination of absorbance of pellet mixed raw materials:

[0088] Prepare the solution to be tested: randomly select the mixed samples of pellets in different positions, take five times, each time 100g of the sample is put into a 500ml beaker, add 200ml of distilled water to the 500ml beaker, stir well, react for 20min, then filter and use the filtrate 500ml or 1000ml volumetric flask to volume.

[0089] Prepare the sample solution: take out 25ml of the solution to be tested from the volumet...

Embodiment 3

[0099] (1) Preparation of pellet mixed raw materials:

[0100] After adding the pellets with mineral powder (10kg in total) into the mixer, add potassium iodate solid (2g) into the mixer and mix well.

[0101] (2) Preparation of detection solution:

[0102] Prepare 2g / L KI solution: weigh 1.0g KI, dissolve it in 200ml water, and dilute to 500ml.

[0103] Prepare 0.1mol / L dilute hydrochloric acid: dilute concentrated hydrochloric acid to make 0.1mol / L.

[0104] (3) Determination of absorbance of pellet mixed raw materials:

[0105] Prepare the solution to be tested: randomly select the mixed samples of pellets in different positions, take five times, each time 100g, put them into a 500ml beaker, add 150ml of distilled water to the 500ml beaker, stir well, react for 30min, then filter and use the filtrate 500ml volumetric flask to volume.

[0106] Prepare the sample solution: take out 25ml of the solution to be tested from the volumetric flask with a pipette, and transfer it...

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Abstract

The invention discloses a method for measuring the mixing uniformity degree of a pellet raw material, which comprises the following steps: adding iodate into a pellet raw material to be measured, andperforming uniform mixing to obtain a pellet mixed raw material; preparing an iodide salt detection solution, and taking N parts of the same amount of iodide salt detection solution from the iodide salt detection solution; randomly extracting N parts of pellet mixed samples with the same amount, uniformly mixing the N parts of pellet mixed samples with the same amount with N parts of an iodide salt detection solution to obtain N parts of a mixed solution, and adjusting the pH value of the N parts of the mixed solution to 1.4-3.4 to obtain N parts of the mixed solution with the adjusted pH value, wherein the mass ratio of iodate in a single pellet mixed sample to iodate in a single iodate detection solution is less than 1:6; respectively measuring the absorbance of the N parts of mixed liquid after the PH value is adjusted by adopting an absorbance spectrophotometric method to obtain the absorbance of each part of mixed liquid after the PH value is adjusted; and analyzing the mixing uniformity degree of the pellet mixed raw materials according to the absorbance of each part of the mixed solution after the pH value is adjusted.

Description

technical field [0001] The invention relates to the technical field of measuring uniformity, in particular to a method for measuring the uniformity of mixing raw materials of a pellet mixer. Background technique [0002] Generally, the production process of pellets includes the preparation of raw materials, batching, mixing, pelletizing, drying, preheating and roasting, and the treatment of finished products and returned ore. The main purpose of raw material mixing is to carefully mix the components in the batching Homogenize to obtain a mixture with uniform chemical composition. The production process of pellets is a process in which various components interact at high temperature. The uniform mixing of raw materials is conducive to the roasting of pellets and ensures the uniform and stable composition of pellets. [0003] Therefore, the quality of pellets depends to a large extent on the uniformity of the distribution of components in the mixture. At the same time, the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33G01N1/28
CPCG01N21/33G01N1/28
Inventor 赵路遥张彦青格勒田筠清马丽杨涛
Owner SHOUGANG CORPORATION
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