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Pellet ore binder

A technology of binder and pellets, which is applied in the field of pellet binder formula, can solve the problems of increasing or decreasing blast furnace ironmaking costs, reducing production efficiency, and poor quality of bentonite, so as to ensure strength, improve utilization rate, and strengthen cohesive effect

Inactive Publication Date: 2009-09-09
廊坊江宇化工建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Bentonite has always been used as a flux in the traditional pellet production process in the iron and steel industry at home and abroad, but due to the poor quality of bentonite, the amount added is relatively high, generally between 2.0-4.0%. application, but the amount of bentonite is generally between 1.5-2.2%, and generally speaking, every addition of 1.0% of bentonite will reduce the grade of pellets by 0.6, so the addition of a large amount of bentonite limits the pellets Improvement of taste
The reduction of pellet grade will inevitably increase or decrease the cost of blast furnace ironmaking and reduce its production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 is a mixture of hydroxymethyl cellulose and sodium silicate with a particle size of about 220 meshes, and the weight percentage of the mixture is: hydroxymethyl cellulose: sodium silicate=10%: 90%.

[0024] This embodiment is applied in the production process of pellets with a particle size of iron concentrate powder of about 220 meshes, and its effects are compared as shown in Table 1,

[0025] Table 2 shows:

[0026] Table 1 Comparison of pelletizing and raw pellet performance

[0027]

[0028] Table 2 Final Ball Performance Comparison

[0029]

[0030]

Embodiment 2

[0031] Example 2 is a mixture of hydroxypropyl methylcellulose and potassium silicate with a particle size of about 180 meshes, and the weight percentage of the mixture is: hydroxypropyl methylcellulose: potassium silicate=50%: 50%.

[0032] This embodiment is applied in the production process of pellets with a particle size of iron fine powder of about 180 meshes, and its effects are compared as shown in Table 3 and Table 4:

[0033] Table 3 Comparison of pelletizing and raw pellet performance

[0034]

[0035] Table 4 Final Ball Performance Comparison

[0036]

Embodiment 3

[0037] Embodiment 3 is the mixture of carboxymethyl cellulose, sodium silicate, potassium silicate of particle size about 120 orders, and the percentage by weight of this mixture is: carboxypropyl methylcellulose: sodium silicate: potassium silicate=50% : 30%: 20%, it is applied in the pellet production process of about 150 meshes in iron fine powder particle size, and its effect contrast is as shown in Table 5 and Table 6:

[0038] Table 5 Comparison of pelletizing and raw pellet performance

[0039]

[0040] Table 6 Final Ball Performance Comparison

[0041]

[0042]

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Abstract

The present invention relates to a pellet ore binder which belongs to the technical field of pellet ore production of the iron and steel metallurgy industry. The binder is the mixture of organic matter and inorganic matter, wherein the ratio satisfies the following relationship: organic matter: inorganic matter=10%-50%:50%-90%. The organic matter is one compound or a plurality of compounds selected from Carboxymethyl cellulose, carboxymethyl cellulose, hydroxypropylmethylcellulose or carboxymethylcellulose sodium and sodium carboxymethyl cellulose. The inorganic matter is one compound or a plurality of compounds selected from silicates. The pellet ore binder of the invention has the characteristics of simple preparing, low cost, convenient application, etc. The matching of fusing agent of pellet ore binder can be greatly reduced thereby increasing the grade of pellet ore.

Description

technical field [0001] The invention belongs to the technical field of pellet production in the iron and steel metallurgy industry, and is characterized in that it relates to a pellet binder formula for replacing or reducing the amount of bentonite in the pellet production process so as to ensure that the total flux consumption in the pellet production process is greatly reduced. Background technique [0002] Bentonite has always been used as a flux in the traditional pellet production process in the iron and steel industry at home and abroad, but due to the poor quality of bentonite, the amount added is relatively high, generally between 2.0-4.0%. application, but the amount of bentonite is generally between 1.5-2.2%, and generally speaking, every addition of 1.0% of bentonite will reduce the grade of pellets by 0.6, so the addition of a large amount of bentonite limits the pellets The improvement of taste. The reduction of pellet grade will inevitably increase or decrease...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/242
Inventor 袁玉宝
Owner 廊坊江宇化工建材有限公司
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