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A sintering method for sintering base material

A sintering method and bottoming material technology, applied in the field of iron and steel metallurgy, can solve problems such as patent blanks, achieve the effects of improving strength and metallurgical properties, reducing investment, and increasing economic benefits

Active Publication Date: 2017-03-01
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the technical research and production application of using iron-containing dust to make pellets instead of sinter or lump ore as sintering base material has not been reported at home and abroad, and the relevant patents are also blank.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Under the conditions of sintering raw materials for high-titanium vanadium-titanium magnetite concentrate in Panzhihua Iron and Steel (here specifically refers to Panzhihua Iron and Steel high-titanium vanadium-titanium magnetite concentrate because other iron and steel enterprises use ordinary iron ore for sintering, and use high-titanium vanadium-titanium magnetite concentrate Ore sintering is only in Panzhihua Iron and Steel Co., Ltd., which is an important symbol of Panzhihua Iron and Steel sintering and other factories). Small balls made of iron-containing dust are used as sintering bottom material. Mixture moisture 7.5%, sintering basicity CaO / SiO 2 It is 2.0, and the suction negative pressure is 12kPa. The results show that compared with the test example, the drum strength of sintered ore is increased by 0.57 percentage points, the finished product rate is increased by 6.61 percentage points, the output is increased by 7.82%, and the solid fuel consumption is red...

Embodiment 2

[0021] Under the condition of sintering raw materials of high titanium vanadium titanium magnetite concentrate in Panzhihua Iron and Steel Co., Ltd., small balls made of iron-containing dust are used as sintering bottom material. %, sintered basicity CaO / SiO2 It is 2.0, and the suction negative pressure is 12kPa. The results show that compared with the test example, the drum strength of sintered ore is increased by 0.51 percentage points, the finished product rate is increased by 6.72 percentage points, the output is increased by 8.16%, and the solid fuel consumption is reduced by 4.25kg / t ore.

Embodiment 3

[0023] Under the condition of sintering raw material of high titanium vanadium titanium magnetite concentrate in Panzhihua Iron and Steel Co., Ltd., small balls made of iron-containing dust are used as sintering bottom material. %, the sintering basicity CaO / SiO2 is 2.0, and the exhaust negative pressure is 12kPa. The results show that compared with the test example, the drum strength of sintered ore is increased by 0.48 percentage points, the finished product rate is increased by 6.33 percentage points, the output is increased by 7.63%, and the solid fuel consumption is reduced by 3.91kg / t ore.

[0024] According to the test results, the effect of using small balls with a particle size of 10-16mm and a thickness of 30mm is the best, and the effect of using small balls with a particle size of 15-20mm and a thickness of 25mm is relatively poor.

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Abstract

The invention discloses a sintering bedding material, and a manufacturing method and sintering method thereof, relating to the technical field of ferrous metallurgy. The sintering bedding material comprises the following components in parts by weight: 48-52 parts of sintering dust, 20-24 parts of gas ash, 14-16 parts of gas sludge, 11-12.8 parts of converter dust and 1.0-1.2 parts of bentonite. The particle size of the sintering bedding material is 7-20mm, and the thickness of the sintering bedding material is 25-35mm. The technique can save abundant finished sinter and lump ore resources, greatly enhance the sintered ore yield and output and lower the fuel consumption and production cost. The sintering bedding material can sufficiently utilize various iron-containing dust and sludge generated in the steel production process, thereby changing wastes into valuable substances and reducing the environmental pollution. The technique has favorable effect, is simple and easy to implement, only needs to add one iron-containing dust and sludge pelletizer, and has the advantages of high feasibility for popularization and application and high practical value.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, and is suitable for sintering high-titanium vanadium-titanium magnetite or ordinary iron ore, and in particular relates to a sintering primer, a manufacturing method thereof and a sintering method. Background technique [0002] In the sintering production, the sintering material is directly spread on the grate bar. When the combustion zone reaches the grate bar, the high-temperature exhaust gas in the combustion zone may burn the grate bar or stick the molten liquid phase to the grate bar, causing the grate The bar burns seriously, damages the sintering equipment, shortens the service life of the equipment, and increases the purchase cost and cost of equipment such as grate bars. Due to the sticky material formed during the sintering process, it will block the small grate bar and the bulk material pipeline, increase the labor intensity and danger of the employees, and seriously ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/16
Inventor 甘勤何木光蒋大军林文康付卫国
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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