Control method of lateral deviation of sintering end point of sintering machine

A technology of sintering end point and control method, which is applied in the furnace type, furnace, lighting and heating equipment, etc., can solve the problems of uneven lateral distribution of sintering points, inaccurate auxiliary door adjustment, fluctuation of sinter quality, etc., to reduce sintering. Return rate, improve accuracy, reduce the possible effects of personal safety accidents

Active Publication Date: 2015-09-02
SHANXI TAIGANG STAINLESS STEEL CO LTD
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of uneven lateral distribution of burn-through points in the sintering process, resulting in fluctuations in sinter quality, high and unstable return ore, and to replace manual, lagging and inaccurate auxiliary door adjustments by operators Behavior

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] 1. In the flue bellows at the middle and rear of the sintering machine, each bellows is installed with 6 thermocouples along the horizontal direction of the trolley to form a sintering waste gas temperature detection array;

[0024] 2. Divide the 6 thermocouple detection directions into six areas, and calculate the position of the sintering waste gas temperature rise point in each area and evaluate the detection data, filter out wrong data, and store the sintering waste gas temperature rise point in each area The effective data of the temperature value and its average value;

[0025] Among them, set the deviation range value, calculate the difference = detection value - the average value of the sampling data at the same position, and the difference exceeds the set range as error data; set the effective upper limit value for the position of the bellows where the thermocouple is located. If the value exceeds the effective upper limit value, it is regarded as wrong data; ...

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Abstract

A method for controlling sintering end point lateral deviation of a sintering machine includes the steps that six thermal couples are laterally installed along a trolley on each flue air box at the middle rear position of the sintering machine to form a sintering waste gas temperature detecting array; the detecting directions of the six thermal couples are divided into six regions, the positions of sintering waste gas temperature rising points of each region are calculated, detected data are evaluated, wrong data are filtered, and effective data of temperature values of the sintering waste gas temperature rising points of each region and effective data of average values of the temperature values are stored; online analysis is conducted on the detected effective data of the six thermal couples, the position points of the sintering waste gas temperature rising points of the six thermal couples are calculated, and the average value of the position points is calculated. By the adoption of the method, stability of quality of sinter is improved, and the return rate of the sinter is reduced.

Description

technical field [0001] The invention belongs to the field of automatic control of iron and steel metallurgical sintering process. Background technique [0002] Sintering ore is an important raw material for blast furnaces, and the mechanism of iron ore sintering process is very complicated. Modern sintering is a draft sintering process, that is to form a mixture of iron ore powder, flux, fuel and returned ore in a certain proportion, with an appropriate amount of water, after mixing and pelletizing, spread it on the trolley of the belt sintering machine, Ignite under a certain negative pressure, and as the trolley moves forward, the mixture burns from top to bottom to form sinter. The end point of sintering is the burn through point. [0003] In the sintering process, there are many factors affecting the output and quality of sintering ore, the main factors can be summarized into two categories: fluctuation of chemical composition and improper control of sintering end poin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B21/14
Inventor 甘晓靳杨朝刚杨晓岗张永海高长涛徐慧明
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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