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On-line method for detecting FeO content in agglomerate by utilizing magnetic induction coil detection device

A magnetic induction coil and detection device technology, applied in the direction of material magnetic variables, etc., can solve the problems of inability to reflect the overall situation, poor representation, and inability to achieve stable FeO content in sintered ore

Inactive Publication Date: 2011-09-07
北京宇宏泰测控技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this technical solution are: first, the offline detection method is relatively cumbersome, requiring multiple sampling and dividing equipment; second, the representativeness of the material collection is poor, and it is only a single-point detection result, which cannot reflect the overall situation of a certain period of time Third, there is a large lag in detection. It generally takes four to five hours from raw material mixing to getting the tested ore to get the test results, and then according to the test results of four or five hours ago, the current mixture is mixed with carbon. Adjusting the proportion of sinter usually cannot achieve the purpose of stabilizing the FeO content of sinter

Method used

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  • On-line method for detecting FeO content in agglomerate by utilizing magnetic induction coil detection device
  • On-line method for detecting FeO content in agglomerate by utilizing magnetic induction coil detection device
  • On-line method for detecting FeO content in agglomerate by utilizing magnetic induction coil detection device

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Experimental program
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Effect test

Embodiment 1

[0059] Such as figure 1 Shown is a schematic diagram of the installation position of the magnetic induction coil detection device. The sintering process of sintering includes mixing raw materials in the mixing barrel to form a mixture, and the mixture enters the silo (the silo mainly has two functions, one is to store the mixture, and it can ensure the emergency shutdown of the previous process. The sintering machine normally feeds the material, and another function is to discharge the material from the silo to control the material spreading), the mixture in the silo is sintered into sintered ore on the sintering machine, the sintered ore is crushed by the crusher, and the crushed sintered ore is processed by The first-stage screening equipment of the three-stage screening system, the second-stage screening equipment of the three-stage screening system, and the third-stage screening equipment of the three-stage screening system are screened. According to different sintering p...

Embodiment 2

[0064] Such as figure 2 Shown is a schematic diagram of the installation position of the magnetic induction coil detection device. The difference between this embodiment and Embodiment 1 is that before the measured ore is introduced into the magnetic induction coil detection device, it is subjected to secondary crushing treatment, or it is subjected to cooling treatment, or it is subjected to secondary crushing and cooling treatment, so as to Meet the tolerance temperature of the magnetic induction coil detection device and the detectable particle size of the material, thereby ensuring the measurement accuracy. Among them, when secondary crushing and cooling treatment are required, there is no requirement for the sequence of crushing and cooling treatment.

[0065] According to actual working conditions (that is, depending on the tolerance temperature of the magnetic induction coil detection device and the particle size of the detectable material), when the magnetic inductio...

Embodiment 3

[0069] Such as image 3 Shown is a schematic diagram of the installation position of the magnetic induction coil detection device. The difference between this embodiment and Embodiment 1 is that the crushed sinter in this embodiment passes through the first-stage screening equipment, the second-stage screening equipment, the third-stage screening equipment and the first-stage screening equipment of the four-stage screening system. Four-stage screening equipment for screening. Correspondingly, the installation position of the magnetic induction coil detection device can be between the crusher and the first-level screening equipment, or between the first-level screening equipment and the second-level screening equipment, or between the second-level screening equipment and the second-level screening equipment. Between the third-level screening equipment, or between the third-level screening equipment and the fourth-level screening equipment, or after the fourth-level screening e...

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Abstract

The invention provides an on-line method for detecting FeO content in an agglomerate by utilizing a magnetic induction coil detection device, comprising the following steps of: A, introducing partial agglomerate in the broken agglomerate of which the temperature is in a temperature range that the magnetic induction coil detection device can tolerate and the particle size is smaller than the maximum particle size that the magnetic induction coil detection device can detect or the partial agglomerate in the agglomerate sieved by certain-grade sieving equipment of a multi-grade sieving system into the magnetic induction coil detection device; and B, carrying out real-time detection on the agglomerate introduced into a magnetic induction coil by utilizing the magnetic induction coil detection device to obtain the FeO content in the agglomerate. By utilizing the method, the FeO content in the agglomerate can be accurately detected in time so that the carbon addition proportion in a mixture is adjusted in time and the FeO content in the agglomerate is stabilized.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to a method for online detection of FeO content in sintered ore by using a magnetic induction coil detection device. Background technique [0002] In the process of modern iron and steel production, sintering is an important part of providing raw materials for blast furnace ironmaking. The production of sintered ore by sintering method not only solves the problem of lean ore ironmaking, but also improves the metallurgical properties of iron-containing raw materials, so that the blast furnace production index and Economic benefits have been significantly improved. The ferrous oxide (FeO) content of sinter is a comprehensive indicator of sinter production. Practice shows that a change of 1% in FeO content in sinter affects the blast furnace coke ratio by 1% to 1.5%, and affects the blast furnace output by 1% to 1.5%. . At the same time, the FeO content of sinter also affects the drum stren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/72
Inventor 李冬初欧阳普照
Owner 北京宇宏泰测控技术有限公司