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Method for solving sintering grate sticky-blockage problem

The technology of grate bar and mixed material is applied in the field of sintering, which can solve the problems of restricting the uniformity and stability of sintered mineral production, poor air permeability of sintered material layer, and increased load of main exhaust fan, etc., so as to reduce the labor intensity and the labor intensity. , The effect of improving the accuracy of raw materials

Inactive Publication Date: 2019-08-06
成渝钒钛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for solving sintered grate sticking, which has the advantages of effectively reducing the phenomenon of sintering grate sticking, improving production efficiency, etc., and solves the problem that once the grate sticking is formed, it will cause The air permeability of the sinter layer becomes poor, and the load of the main exhaust fan increases, which seriously restricts the improvement of sinter mineral production, quality, and production uniformity and stability. At the same time, it is difficult and labor-intensive to clean the sticky grate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for solving sintered grate sticking, is characterized in that, comprises the following steps:

[0033] 1) Prepare 84.7% of iron-containing raw materials, 3% of solvent, 5% of fuel and 7.3% of water to mix to obtain a mixture;

[0034] 2) Put the mixed material with reduced moisture in step 1) into the heating equipment, preheat it through the mine tank steam, and monitor the temperature of the mixed material in real time. When the temperature reaches an appropriate temperature, stop heating to reduce sintering The thickness of the wet layer in the process;

[0035] 3) In the mixture of step 1), the content of particles with a particle size of 0 to 3 mm is 15%, the content of particles with a particle size of 3 to 5 mm is 70%, the content of particles with a particle size of 5 to 8 mm is 10%, and the particle size is greater than or equal to The particle content of 8mm is less than or equal to 5%, and the particle size of solvent and fuel is less than 3mm. What...

Embodiment 2

[0040] A method for solving sintered grate sticking, is characterized in that, comprises the following steps:

[0041] 1) Prepare 85% of iron-containing raw materials, 3% of solvent, 5% of fuel and 7% of moisture to mix to obtain a mixture, and reduce the moisture standard of the mixture from 7.3% to 7.0%;

[0042] 2) Put the mixed material with reduced moisture in step 1) into the heating equipment, preheat it through the mine tank steam, and monitor the temperature of the mixed material in real time. When the temperature reaches an appropriate temperature, stop heating to reduce sintering The thickness of the wet layer in the process;

[0043] 3) In the mixture of step 1), the content of particles with a particle size of 0 to 3 mm is 15%, the content of particles with a particle size of 3 to 5 mm is 70%, the content of particles with a particle size of 5 to 8 mm is 10%, and the particle size is greater than or equal to The particle content of 8mm is less than or equal to 5%...

Embodiment 3

[0048] A method for solving sintered grate sticking, is characterized in that, comprises the following steps:

[0049] 1) Prepare 84% of iron-containing raw materials, 3% of solvent, 5% of fuel and 6.0% of water to mix to obtain a mixture, and reduce the moisture standard of the mixture from 7.0% to 6.0%;

[0050] 2) Put the mixed material with reduced moisture in step 1) into the heating equipment, preheat it through the mine tank steam, and monitor the temperature of the mixed material in real time. When the temperature reaches an appropriate temperature, stop heating to reduce sintering The thickness of the wet layer in the process;

[0051] 3) In the mixture of step 1), the content of particles with a particle size of 0 to 3 mm is 15%, the content of particles with a particle size of 3 to 5 mm is 70%, the content of particles with a particle size of 5 to 8 mm is 10%, and the particle size is greater than or equal to The particle content of 8mm is less than or equal to 5%,...

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Abstract

The invention relates to the technical field of sintering, and discloses a method for solving a sintering grate sticky-blockage problem. The method is characterized by comprising the following steps of (1) preparing 84.7 percent of raw material containing iron, 3 percent of solvent, 5 percent of fuel and 7.3 percent of water, mixing to obtain a mixture, and reducing the moisture standard of the mixture to 7.0 percent from 7.3 percent; and (2) feeding the mixture with the moisture reduced in the step (1) into a heating device, preheating through ore tank steam, monitoring the temperature of themixture in real time at the same time, and enabling the temperature to reach to the appropriate temperature. According to the method for solving the sintering grate sticky-blockage problem, the moisture standard of the mixture is reduced to 7.0 percent from 7.3 percent in the step (1), so that the thickness of an overdamp layer during the sintering process can be effectively reduced, and the grate forming amount and the grate forming probability are reduced during the sintering process; and the premix compound is preheated through the ore tank steam in the step (2), so that the sintering leadtime can be effectively shortened during production, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of sintering, in particular to a method for solving sticking of sintering grates. Background technique [0002] Grate sticking of sintering machine is a common phenomenon in all sintering plants. Sintering production is based on the wind, and only when there is wind can there be production. The increase in load seriously restricts the improvement of sintered minerals, quality, and production uniformity and stability. At the same time, it is difficult and labor-intensive to clean the sticky grate. [0003] The clogging of grate bars in different degrees is a problem in the sintering industry. The clogging of grate bars in different factories has different reasons, which can be roughly divided into raw material structure and grate bar structure. Solving the clogging of sintering locomotive grate bars is a common problem faced by sintering plants all over the country. , Chinese patent CN 108842055 A proposes a...

Claims

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Application Information

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IPC IPC(8): C22B1/20
CPCC22B1/205
Inventor 陈仁宏杨建国黎平李建
Owner 成渝钒钛科技有限公司
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