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Adhesive for preparing iron powder ball using iron ore powder and its prepared ironpowder ball

A binder and iron ore powder technology, applied in the field of blast furnace ironmaking in the metallurgical industry, can solve problems such as increasing ironmaking costs, achieve good oxygen and heat permeability, high strength, and reduce energy consumption

Inactive Publication Date: 2007-10-31
姜文平 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high-temperature sintering process increases the cost of ironmaking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 Take the components of the binder in the following parts by weight and mix them uniformly to obtain the iron ore powder binder:

[0029] 70 parts of water glass saturated solution

[0030] Aluminum Potassium Sulfate 8 parts

[0031] 12.5 parts of boron tetroxide

[0032] Sulfur 7.5 parts

[0033] Diffuser OP-10 0.4 parts

[0034] 20 parts of water

[0035] Take iron ore powder with iron content of 50% by weight, 92% iron ore powder and 8% binder, stir and mix the two, and use a ball press to press the mixture into a wet ball with a diameter of 3 to 6 cm. Dry the iron powder ball at room temperature to obtain a higher strength iron powder ball.

[0036] The specification is 35m 3 The hot air furnace is used as iron-making equipment to smelt the prepared iron powder balls. The iron powder balls are continuously put into the warm air furnace, and the temperature is gradually raised to the smelting temperature of 1700°C, a...

Embodiment 2

[0040] Example 2 Take the components of the binder in the following parts by weight and mix them uniformly to obtain the iron ore powder binder:

[0041] 80 parts of water glass saturated solution

[0042] Aluminum Potassium Sulfate 8 parts

[0043] 12.5 parts of boron tetroxide

[0044] Sulfur 8.5 parts

[0045]Diffusion agent MF 0.4 parts

[0046] 25 parts of water

[0047] Take the iron ore powder with iron content of 63% by weight, 92.5% iron ore powder and 7.5% binder, stir and mix the two, and press the mixture into a wet ball with a ball diameter of 3 to 6 cm. Dry the iron powder ball at room temperature to obtain a higher strength iron powder ball.

[0048] The specification is 35m 3 The hot air furnace is used as iron-making equipment to smelt the prepared iron powder balls. The iron powder balls are continuously put into the warm air furnace, and the temperature is gradually raised to the smelting temperature of 1700°C, a...

Embodiment 3

[0049] Example 3 Take the components of the binder in the following parts by weight and mix them uniformly to obtain the iron ore powder binder:

[0050] 80 parts of water glass saturated solution

[0051] Aluminum Potassium Sulfate 9 parts

[0052] Boron tetroxide 10 parts

[0053] Sulfur 7.5 parts

[0054] Diffusion agent Pingping plus O-10 0.5 parts

[0055] 25 parts of water

[0056] Get iron ore powder with iron content of 44% by weight, 92.5% iron ore powder by weight, and 7.5% binder to stir and mix the two, and use a ball press to press the mixture into a wet ball with a ball diameter within the range of 3 to 6 cm. Dry the iron powder ball at room temperature to obtain a higher strength iron powder ball.

[0057] The specification is 35m 3 The hot air furnace is used as iron-making equipment to smelt the prepared iron powder balls. The iron powder balls are continuously put into the warm air furnace, and the tempera...

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PUM

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Abstract

The invention relates to an iron ore powder preparing iron powder ball bonding agent and the iron powder ball. It belongs to metallurgy industry blast furnace iron making technique field. The bonding agent material and its amounts by weight are water glass saturated solution 70-80, potassium aluminum sulfate 8-9, tetra-boron oxide 10-15, sulfur 7.5-8.5, organic dispersing agent, and water 20-25. The preparing method mixing the bonding agent and the iron ore powder by weight; using ball press to form iron powder wet ball with 3-6cm diameter; naturally drying to gain iron powder ball. The bonding agent makes the iron powder ball have good high temperature sphericity and intension without agglomeration to reduce preparing cost, makes the iron powder have good oxygen permeability and diathermancy to reduce energy consumption. The invention can apply in various iron powder preparing iron powder ball and blast furnace iron making.

Description

technical field [0001] The invention belongs to the technical field of blast furnace ironmaking in the metallurgical industry, and in particular relates to an iron powder ball prepared from iron ore powder for ironmaking and a binder for preparing the iron powder ball. Background technique [0002] Iron ore powder is prepared into iron pellets during blast furnace ironmaking, which can optimize the structure of blast furnace charge, improve the oxygen and heat permeability of iron ore powder, and reduce energy consumption. Because high-grade iron ore powder is agglomerated with an organic binder, the hot and cold strength is low, and it is easy to pulverize in the smelting furnace, which is not conducive to smelting. At present, the inorganic binder materials used in the preparation of iron pellets include bentonite, coke powder, etc. Coal derivatives and nitric acid, etc., the organic binders used include guar gum, vinyl monomer, lignosulfonate, etc. Although the inorganic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/242
Inventor 姜文平
Owner 姜文平
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