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Measuring and controlling method of moisture in sintered mixture material

A technology of sintering mixture and measurement and control method, which is applied in the direction of material analysis, measuring device, and analysis of materials through optical means, which can solve the problems affecting the stable production, unable to solve the problems of measurement and control of water addition for hot-returning sintering, moisture fluctuations, etc. problems, to achieve significant technological progress, eliminate fluctuations, and improve utilization coefficients

Inactive Publication Date: 2002-04-17
HANSTEEL
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Problems solved by technology

[0003] However, the above two methods of measuring and controlling the moisture in the sintering mixture cannot solve the problem of measuring and controlling the amount of water added to the hot-returning sintering
In the process of hot ore return sintering, the temperature of return ore in the sinter mixture is not a constant value, and the moisture content of the sinter mixture will fluctuate greatly with the change of temperature, thus affecting the stable production

Method used

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  • Measuring and controlling method of moisture in sintered mixture material
  • Measuring and controlling method of moisture in sintered mixture material

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Embodiment Construction

[0012] refer to figure 1 , hot returned ore and other sintering raw materials are weighed by the disc feeder and impact flowmeter, and sent to the mixer by the belt conveyor. After mixing with water, they are sent to the pelletizer by the belt conveyor to make pellets. An infrared thermometer is installed in front of the mixer to measure the temperature of hot ore return before adding to the mixer. In order to increase the measurement accuracy, multi-point measurement can be carried out, and the average value can be taken. Send the hot ore return temperature, dosage and other mixed raw material weight and water weight data sent into the mixer to the computer processing system, and calculate the set value of the water addition amount of the mixer according to the target moisture content of the mixture, and by The control loop drives the actuator to adjust the opening of the water adding valve to add water to the mixer, and then compares the moisture content measured by the inf...

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Abstract

The present invention relates to the field of iron smelting material preparing technology and solves the technological problem of measuring and controlling the moisture in sintered mixture material for eliminating the fluctuation of moisture content in the mixture material with the temperature. The method calculates the amount of water needed to add to based on required material moisture content, material weight, original material moisture content, correction coefficient and other parameters. The present invention establishes mixture material balancing theory. The present invention can raise the utilization factor of sintering machine by 3-5 % and is suitable for in-situ moisture analysis.

Description

technical field [0001] The invention relates to a method for measuring and controlling the amount of water added to a mixture in the ironmaking sinter production process, in particular to a method for online measurement and control of moisture when the sintering mixture is mixed with heating and returned to ore, and belongs to the technical field of raw material preparation for ironmaking sintering. Background technique [0002] In the mixing process of sintering production, a certain proportion of raw materials needs to be sent to the mixer for mixing, and at the same time, the required amount of water is added to the mixer. At present, the following two methods are used to measure and control the moisture in the mixture in production: 1. Automatically control according to the measured value of the moisture meter. That is, a water measuring instrument is added behind the mixer, and the measured moisture value of the mixture and the amount of material weighed by the batching...

Claims

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Application Information

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IPC IPC(8): C22B1/16G01N21/3563G01N21/85
Inventor 黄绪凤严纪文裴风玉马金明张志鸿孙振波
Owner HANSTEEL
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