A kind of online desulfurization method of sintering process

A technology of sintering process and desulfurization agent, which is applied in the field of desulfurization, can solve problems such as difficulty in industrial field application, deterioration of sinter technical indicators, and great influence on sinter quality, so as to improve desulfurization efficiency, high cloth distribution accuracy, and cloth distribution accuracy And uniform and stable effect

Active Publication Date: 2015-11-18
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, through industrial field tests, it is found that there are the following problems: (1) Adding urea into the full mixture will lead to deterioration of various technical indicators of sintered ore, and will decrease with the increase of urea addition, which will affect the quality of sintered ore (2) Adding urea dissolved in water to the bottom layer of sintered material layer will also lead to deterioration of various technical indicators of sintered ore, and the desulfurization effect is not ideal
Therefore, the methods of Chinese Patent Nos. 99111573.2 and 201110022407.0 are difficult to apply in industrial field and cannot be applied to the actual sintering process

Method used

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  • A kind of online desulfurization method of sintering process
  • A kind of online desulfurization method of sintering process
  • A kind of online desulfurization method of sintering process

Examples

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Embodiment 1

[0028] Such as figure 1As shown, an online desulfurization system for a sintering process in this embodiment includes a sintering trolley 1, a desulfurizing agent adding device, a mixture distributing device and a bed material distributing device 4, and the desulfurizing agent adding device is located in the mixture distributing device Between the bottom material distributing device 4, the mixture distributing device includes a mixture mine tank 21, a mixture feeder 22 and a mixture distributor 23.

[0029] The desulfurizing agent adding device in this embodiment comprises a desulfurizing agent silo 31, a desulfurizing agent feeder 32 and a desulfurizing agent material guiding mechanism 33, and the outlet of the desulfurizing agent silo 31 and the feed of the desulfurizing agent feeder 32 The outlet of the desulfurizing agent feeder 32 is connected to the feeding end of the desulfurizing agent material guiding mechanism 33, and the discharging end of the desulfurizing agent ma...

Embodiment 2

[0083] The online desulfurization system of a sintering process of this embodiment has the same basic structure as that of Embodiment 1, the difference is that it also includes a stopper mechanism 34, and the stopper mechanism 34 is located at the flow output of the discharge end of the desulfurizer material guide mechanism 33 Specifically, in this embodiment, the material blocking mechanism 34 is a material blocking plate, which is located at the output of the material flow at the discharge end of the desulfurizing agent material guide mechanism 33, and is used to block the mixture, so that it can further ensure that the desulfurizing agent reaches When the discharge end of the desulfurizer material guide mechanism 33 has reached the specified height, the specified height can be adjusted by the tilt angle adjustment mechanism. In this embodiment, a height position adjustment mechanism is installed on the baffle plate to facilitate It can be adjusted with the change of the incl...

Embodiment 3

[0086] An online desulfurization system in the sintering process of this embodiment has the same basic structure as that of Embodiment 2, except that the acute angle formed by the stopper mechanism 34 and the vertical direction is 10 degrees. The basic process of the on-line desulfurization method is the same as in Example 1, except that the total height of the sintered material layer is 800 mm, the distance H between the desulfurizing agent layer 7 and the bottom of the sintering trolley 1 is 120 mm, and the quality of the desulfurizing agent layer 7 is the mixture Layer 6 contained the same mass of sulfur. After the test, the technical indicators of the sintered ore were detected, and the indicators were basically the same as those in Example 1, indicating that the technical indicators of the sintered ore were almost not affected, and the desulfurization rate was 87.25%.

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Abstract

The invention discloses an online desulphurization method for a sintering process, and belongs to the technical field of desulphurization. According to the online desulphurization method for the sintering process, a grate-layer material layer is laid at the bottom of a sintering pallet, and a mixed material for sintering is laid on the grate-layer material layer to form a mixed material layer, wherein a desulphurization agent layer is also laid in the mixed material layer; the distance between the desulphurization agent layer and the bottom of the sintering pallet is 1 / 8 to 1 / 4 of the total height of the mixed material layer; and a desulphurization agent in the desulphurization agent layer is a particulate matter from which ammonium can be decomposed, and is particulate urea with an average particle size of 0.30 to 0.80mm. According to the method, the particulate desulphurization agent is added to a specific position, so that the desulphurization efficiency of the sintering process can be maximally improved, each technical index of sintered ore can be ensured, and influence on the quality of the sintered ore is substantially avoided.

Description

technical field [0001] The invention relates to the technical field of desulfurization, and more specifically relates to an online desulfurization method in a sintering process. Background technique [0002] Sintering is an important process in the production chain of iron and steel complexes. With the development of the iron and steel industry, the demand for iron ore is increasing. However, there are fewer and fewer rich ores that are directly put into the furnace for ironmaking, and a large amount of lean ore resources must be mined and used. Smelting lean ore directly into the furnace will deteriorate the production index of the blast furnace. Therefore, lean ore is processed to obtain concentrate powder through mineral processing. The fine ore produced during the mining and processing of concentrate and rich ore needs to be agglomerated before it can be used in blast furnace ironmaking. The function of the sintering machine is to form mineral blocks. The metallurgic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/16
Inventor 李家新龙红明王平孟庆民金俊刘自民肖俊军张向阳吴雪健
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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