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Ore blending method for reducing consumption and discharge of iron ore sintering carbon

A technology of carbon and ore blending, applied in the field of iron ore powder sintering, can solve the problems of inability to effectively characterize the sintering performance of iron ore powder, achieve the effect of reducing consumption and emissions, and improving accuracy

Active Publication Date: 2019-03-26
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At that time, the scheme only considered the elemental composition of ore blending iron ore powder, and could not effectively characterize the real sintering performance of iron ore powder

Method used

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  • Ore blending method for reducing consumption and discharge of iron ore sintering carbon
  • Ore blending method for reducing consumption and discharge of iron ore sintering carbon
  • Ore blending method for reducing consumption and discharge of iron ore sintering carbon

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Embodiment 1

[0044] combine Figure 12 Shown, a kind of ore blending method of reducing iron ore sintering carbon consumption and emission of the present invention, at first controls the assimilation reaction characteristic number A of mixed ore h 50-80, and then according to Calculate the ratio r of iron ore fines i . Among them, A i is the characteristic number of assimilation reaction of a single iron ore powder; r i is the ratio of a single iron ore powder; m is the number of iron ore powders, m≥2. By controlling the assimilation reaction characteristic number A of mixed ore h 50-80, combined with the assimilation temperature and assimilation speed of iron ore powder to carry out ore blending, can reduce the carbon consumption and emission of iron ore sintering, and further realize energy saving and emission reduction in the sintering process. The specific steps of the ore blending method for reducing the carbon consumption and discharge of iron ore sintering of the present inve...

Embodiment 2

[0104] combine Figure 5-11 As shown, the content of this embodiment is basically the same as that of Embodiment 1. The difference is that the detection device of this embodiment also includes a reaction timer 310, and the reaction timer 310 is electrically connected to the control processing unit 400. The reaction timer 310 The reaction process is timed, so that the time taken for the iron ore powder sample 140 and the calcium oxide tablet 130 to react to the third electrode 230 can be known, and the assimilation can be obtained by calculating the ratio of the distance between the electrodes to the time used for the reaction. reaction speed. In the process of detecting the assimilation reaction in this implementation, when the temperature measurement part a222 detects that the temperature rises to 1150 ° C, the timer 300, the detection part a221 and the temperature measurement part a222 are turned on. At this time, the second detection unit is in the closed state, and the rea...

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Abstract

The invention discloses an ore blending method for reducing consumption and discharge of iron ore sintering carbon and belongs to the technical field of iron ore powder sintering. According to the oreblending method for reducing consumption and discharge of the iron ore sintering carbon, Ah of mixed ore is controlled to 50-80; the proportion ri of iron ore powder is calculated according to the formula (refer to the Specification); Ah is a characteristic number of an anabolic reaction of the mixed ore, Ai is the characteristic number of the anabolic reaction of single iron ore powder; ri is the proportion of the single iron ore powder; and m is a quantity of the iron ore powder kinds, and m is more than or equal to 2. With adoption of the ore blending method for reducing consumption and discharge of the iron ore sintering carbon, ore blending is carried out by combining an assimilation temperature and an assimilation speed of the iron ore powder to further realize the energy consumption and emission reduction of a sintering process.

Description

technical field [0001] The invention relates to the field of iron ore powder sintering, in particular to an ore blending method for reducing carbon consumption and emission in iron ore sintering. Background technique [0002] Sintering is one of the important links in blast furnace ironmaking. Sintering is to mix various powdery iron-containing raw materials with an appropriate amount of fuel and flux, and add an appropriate amount of water. After mixing and pelletizing, the materials are made to undergo a series of Physical and chemical changes, the process of bonding mineral powder particles into blocks. The sintering process has a direct and important impact on the output and quality of sintering production. Therefore, the sintering process should not only ensure the smooth operation of blast furnace production, but also increase production, and save energy and reduce consumption during production. At present, many metallurgists mainly study the field of sintering, among...

Claims

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Application Information

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IPC IPC(8): C22B1/16
CPCC22B1/16
Inventor 龙红明钱立新章裕东李宁罗云飞春铁军孟庆民李家新余正伟王平狄瞻霞魏汝飞丁龙
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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