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Powder rate measuring method and device

A measuring method and technology for measuring devices, which can be applied to measuring devices, inspection devices, furnace control devices, etc., can solve problems such as time required for analysis, delay in operation process, and problems with representativeness of sampling.

Pending Publication Date: 2021-11-12
JFE STEEL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]In the existing blast furnace operation, in order to grasp the particle size distribution of raw materials, periodic sampling of raw materials and particle size measurement using sieves are carried out, but in this method There is a problem that analysis takes time
In addition, Patent Document 1 discloses a technology for increasing the analysis frequency by automating the sampling of raw materials, but if the sampling frequency is increased too much, there is a risk of delaying the operation process. There is a problem

Method used

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  • Powder rate measuring method and device
  • Powder rate measuring method and device
  • Powder rate measuring method and device

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Embodiment Construction

[0046] Method for determination of the powder of the present invention is a method of bulk powder substance is measured in the x, having the following steps based on the amount of powder adhered to the surface of the block of material x: distance using a distance measuring means for measuring a bulk material until the x steps S1, the feature quantity calculated in step S2 from the distance data obtained by the step S1, and S2 is calculated by the characteristic amount converting step flour yield S3.

[0047] Powder measuring device according to the present invention, further, provides a further embodiment of the method for determination of the powder, comprising: a distance measuring device, the distance x the measured bulk substance; and 2, 2a and converting means includes a calculation unit calculating means 2b feature amount, based on the distance calculation means 2a to the distance obtained by the measurement apparatus 1, the feature amount, the converting means 2b by the dis...

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Abstract

According to the present invention, the proportion (powder rate) of powder adhering to the surface of a lumpy substance is measured in real time with high accuracy. The present invention comprises: a step S1 for measuring a distance between a distance measuring device and the lumpy substance; a step S2 for calculating a feature amount from distance data obtained in step S1; and a step S3 for converting the feature amount calculated in the step S2 into a powder rate, wherein the feature amount calculated in step S2 represents the distance variation calculated from the distance data obtained in step S1. When the powder rate of the lumpy substance increases, a minute distance fluctuation due to a minute unevenness in a three-dimensional shape in a height direction on the surface of the lumpy substance becomes large, and thus by using this as a feature amount, the powder rate of the lumpy substance can be measured in real time with high accuracy.

Description

Technical field [0001] The present invention relates to techniques for determination of powder used to determine the proportion of powder (extraction rate) on the surface of the ore, coke furnace block material as the starting material is attached. Background technique [0002] And the like in a manufacturing process using a mineral raw material, since the operation of the manufacturing process affect the particle size distribution of raw material, and therefore must be measured in advance the particle size distribution of raw material. Especially in the blast furnace operation, in order to ensure ventilation in the furnace, it is important to grasp the particle size distribution of ore, coke and other raw materials, care must be taken on the starting material powder adhering to larger particles (block) (e.g., particle diameter less 5mm) and the ratio operation. [0003] In the conventional blast furnace operation in order to grasp the particle size distribution of the starting m...

Claims

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Application Information

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IPC IPC(8): C21B5/00G01N15/02G01N33/00
CPCC21B7/24C21B5/008C21B5/006C21B5/007C21B2300/04F27D2021/026F27D2019/0003F27B1/28G01N33/24G01N2015/0061G01N15/075G01N15/02G01N33/00C21B5/00G01N15/0205
Inventor 坪井俊树山平尚史
Owner JFE STEEL CORP
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