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Method for determining oxygen consumption of iron per ton at different fuel ratios

A fuel ratio and iron-oxygen technology, applied in furnaces, blast furnace details, blast furnaces, etc., can solve problems such as large deviations in blast furnace output and material speed, deviations, and effects on blast furnace operation and production organization.

Active Publication Date: 2020-04-28
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The combustion rate of blast furnace carbon is an important parameter for determining the oxygen consumption per ton of iron in the blast furnace. The value of the combustion rate is calculated, and the calculated value of iron oxygen consumption per ton has an important impact on the calculation of the blast furnace output and material rate under different furnace air volumes and different fuel ratios; in the actual production of the blast furnace, when the fuel is relatively high The combustion rate of carbon is relatively high, and the combustion rate of carbon entering the furnace is also low when the fuel is relatively low; When the deviation is large, there will be a large deviation between the calculated value and the actual value of the iron consumption per ton based on the calculation of the combustion rate of the carbon in the furnace, which will lead to a large deviation between the calculated value and the actual value of the blast furnace output and material rate , seriously affecting blast furnace operation and production organization
[0003] The traditional value of the combustion rate of char into the furnace is 70-75%, and the specific value is determined according to the fuel ratio. In the traditional value method, the upper limit of the coke combustion rate is 75% during full-coke smelting; However, in the actual production process, when there is a large deviation between the value of the combustion rate of the furnace carbon and the actual value of the combustion rate of the furnace carbon corresponding to the actual production of the blast furnace, the ton of iron oxide determined based on the traditional value method There is a large difference between the calculated value of the consumption and the actual value of per ton of iron and oxygen consumption in the actual production process, resulting in a large deviation between the calculated value of the blast furnace output and material rate and the actual value, which seriously affects the operation and production organization of the blast furnace

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  • Method for determining oxygen consumption of iron per ton at different fuel ratios
  • Method for determining oxygen consumption of iron per ton at different fuel ratios
  • Method for determining oxygen consumption of iron per ton at different fuel ratios

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Embodiment 1

[0056] Under three different blast furnace working conditions, the corresponding air volume into the furnace, oxygen into the furnace, coke ratio, coal ratio, fixed carbon content of coke, fixed carbon content of pulverized coal, and ton of iron into the furnace corresponding to the three different blast furnace working conditions The amount of carbon is shown in Table 3; based on the specific parameters of three different blast furnace operating conditions, the method for determining the oxygen consumption per ton of iron under different fuel ratios provided by the embodiment of the present invention is used to determine the combustion rate of carbon per ton of iron entering the furnace; In case one, the fuel ratio is 505kg / t, and the corresponding combustion rate of carbon per ton of iron into the furnace is taken as 64%; in working condition two, the fuel ratio is 600kg / t, and the corresponding combustion rate of carbon per ton of iron into the furnace is taken as is 67%; in...

Embodiment 2

[0062] Under three different blast furnace working conditions, the corresponding air volume into the furnace, oxygen into the furnace, coke ratio, coal ratio, fixed carbon content of coke, fixed carbon content of pulverized coal, and ton of iron into the furnace corresponding to the three different blast furnace working conditions The amount of carbon is shown in Table 5; based on the specific parameters of three different blast furnace operating conditions, in the actual production process of the blast furnace, the combustion rates of carbon per ton of iron determined based on the actual production results are 63.5%, 68% and 85%, respectively. %, the material rate under the current working conditions based on the combustion rate of the carbon in the furnace is shown in Table 5, and the actual value of iron consumption per ton of iron determined based on the actual production results is shown in Table 6.

[0063] Table 5 (actual parameters of three different blast furnace worki...

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Abstract

The invention discloses a method for determining oxygen consumption of iron per ton at different fuel ratios. The method includes the steps that the coke ratio, coal ratio, fixed carbon content of coke and fixed carbon content of pulverized coal under current blast furnace working conditions are collected; the carbon amount of the iron per ton entering a furnace is calculated according to coke ratio, the coal ratio, the fixed carbon content of the coke and the fixed carbon content of the pulverized coal; the combustion rate of carbon into the furnace is calculated based on the fuel ratios; theactual amount of combusted carbon of the amount of the carbon into the furnace of the iron per ton is calculated based on the amount of the carbon into the furnace of the iron per ton and the combustion rate of the carbon into the furnace; and the actual amount of combusted carbon of the amount of the carbon into the furnace of the iron per ton is multiplied by a set proportional coefficient to calculate the oxygen consumption of the iron per ton. According to the method for determining oxygen consumption of iron per ton at different fuel ratios, under the different fuel ratios, the calculation value of the oxygen consumption of the iron per ton is basically identical to the actual value of the oxygen consumption of the iron per ton actually produced by the blast furnace, the oxygen consumption of the iron per ton under the different fuel ratios can be accurately reflected, a theoretical basis is provided for the operation and production organization of the blast furnace, and the operation of the blast furnace can be accurately guided when the fuel ratios are adjusted.

Description

technical field [0001] The invention relates to the technical field of blast furnace production, in particular to a method for determining the oxygen consumption per ton of iron under different fuel ratios. Background technique [0002] The combustion rate of blast furnace carbon is an important parameter for determining the oxygen consumption per ton of iron in the blast furnace. The value of the combustion rate is calculated, and the calculated value of iron oxygen consumption per ton has an important impact on the calculation of the blast furnace output and material rate under different furnace air volumes and different fuel ratios; in the actual production of the blast furnace, when the fuel is relatively high The combustion rate of carbon is relatively high, and the combustion rate of carbon entering the furnace is also low when the fuel is relatively low; When the deviation is large, there will be a large deviation between the calculated value and the actual value of ...

Claims

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Application Information

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IPC IPC(8): C21B5/00
CPCC21B5/00
Inventor 巩黎伟李昊堃宋建忠李夯为赵新民郑伟王晓冰陈树文梁建华唐顺兵
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD