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Preparation method of semi-steel iron pellets as iron&steel smelting raw material

An iron and steel smelting and semi-rigid technology, applied in the field of metallurgy, can solve the problems affecting the quality of iron and steel smelting, production cost, energy (high fuel and electric power consumption, environmental pollution, etc.), so as to save smelting time, reduce energy consumption, and improve smelting The effect of quality and yield

Inactive Publication Date: 2013-12-18
李永毅 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This traditional smelting method not only consumes a lot of energy (fuel and electric energy), but also pollutes the environment more seriously, and affects the smelting quality and production cost of steel to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Use crushing equipment to make iron fine powder and carbon powder into powders below 100 mesh respectively;

[0017] 2. Put 80% of fine iron powder, 13% of carbon powder, 2% of reducing agent and 3% of catalyst into the mixer by weight, mix well, and then add 2% of binder by weight , using ball making equipment to make the above mixed raw materials into balls with a diameter of 10-30 mm;

[0018] 3. Place the above-mentioned ball into a high-temperature shaft furnace with a temperature of 1000-1200° C. and heat it for 20 minutes to produce the product of the present invention, semi-rigid pellets.

Embodiment 2

[0020] 1. Use crushing equipment to make iron fine powder and carbon powder into powders below 100 mesh respectively;

[0021] 2. Put 81% of fine iron powder, 14% of carbon powder, 1% of reducing agent, and 2% of catalyst into the mixer by weight, mix well, and then add 2% of binder by weight , using ball making equipment to make the above mixed raw materials into balls with a diameter of 10-30 mm;

[0022] 3. Put the above-mentioned ball into a high-temperature shaft furnace with a temperature of 1000-1200° C. and heat it for 30 minutes to produce the product of the present invention, semi-rigid pellets.

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Abstract

The invention provides a preparation method of semi-steel iron pellets as an iron&steel smelting raw material. The semi-steel iron pellets are prepared from five raw materials in percentage by weight: 80-86% of fine iron powder, 12-20% of carbon powder, 1-2% of a reducing agent, 1-4% of a catalyst and 2% of a binder. The preparation method of the semi-steel iron pellets comprises the following steps of 1, grinding the fine iron powder and the carbon powder into powder below 100 meshes by using crushing equipment; 2, putting 80-86% of the fine iron powder, 12-20% of the carbon powder, 1-2% of the reducing agent and 1-4% of the catalyst into a mixer for stirring and mixing evenly according to the weight percentages, and then adding 2% of the binder, and forming the mixed raw materials into pellets having the diameter in the range from 10 to 30 mm by using pelleting equipment; and 3, putting the pellets into a high-temperature vertical furnace at a temperature ranging from 1000 to 1200 DEG C, and heating for 20-30 minutes to obtain the product semi-steel iron pellets.

Description

technical field [0001] The invention relates to a method for preparing semi-rigid pellets, a raw material for iron and steel smelting, and belongs to the technical field of metallurgy. Background technique [0002] The iron and steel industry is the material basis for the development of the national economy and national defense construction, and it is also a symbol to measure a country's industrialization. The quality of iron and steel mainly depends on many factors such as raw materials, fuels, and smelting technology involved in the iron and steel smelting process. At present, in the process of iron and steel smelting, the smelting process is generally to melt pig iron billets and scrap iron and steel raw materials into molten iron through blast furnaces, and then process the molten iron, and then smelt and cast the molten iron into various steel products required by industry. This traditional smelting method not only consumes a lot of energy (fuel and electric energy), bu...

Claims

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Application Information

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IPC IPC(8): C22B1/14
Inventor 李永毅王金忠依波
Owner 李永毅