Magnesium-based pellet ore organic binding agent and preparation and using method thereof

An organic binder and magnesium-based pellet technology, which is applied in the field of binders for metallurgical sintering, can solve problems such as the defects of pellet binders and the influence of sintering ore, so as to improve metallurgical properties, reduce MgO content, and improve sintering. Effect of ore quality and pellet quality improvement

Inactive Publication Date: 2017-11-14
ANSTEEL GRP MINING CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a magnesium-based pellet organic binder and its preparation and use

Method used

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  • Magnesium-based pellet ore organic binding agent and preparation and using method thereof
  • Magnesium-based pellet ore organic binding agent and preparation and using method thereof
  • Magnesium-based pellet ore organic binding agent and preparation and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] The magnesium-based pellet organic binder of Examples 1 to 5 has components and weight percentages as shown in Table 1:

[0017] Table 1 Distribution ratio of each group

[0018]

[0019]

[0020] The components are mixed in proportion, and the finished product is obtained after co-grinding, and the particle size of the finished product is less than 0.044mm.

[0021] The finished magnesium-based pellet organic binder products were added to the iron ore concentrate powder to obtain 5 groups of green pellets;

[0022] The performance indexes of the 5 groups of green balls are compared with the performance indexes of the control group made by adding bentonite conventionally, as shown in Table 2:

[0023] Table 2 Comparison Table of Raw Ball Indexes

[0024]

[0025] The above groups of green pellets are roasted to produce finished pellets;

[0026] Roasting technical parameters are shown in Table 3:

[0027] Table 3: Roasting Technical Parameters

[0028] ...

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Abstract

The purpose of the present invention is to solve the defects of the pellet binder in the prior art and the problem that the sinter is affected by MgO, and provide a magnesium-based pellet organic binder and its preparation and use methods, which belong to the metallurgical Technical field of binder for sintering. The binder is composed of 0.02%-0.08% of organic high-viscosity material and 99.92-99.98% of magnesium oxide powder. The organic high-viscosity material is one or both of sodium alginate and xanthan gum, and the magnesium oxide powder is lightly burned magnesium Powder, the particle size is less than 0.044mm. The present invention uses magnesium material instead of bentonite, which can improve the quality of pellets, increase the strength and bursting temperature of green pellets, and improve the compressive strength of finished balls and the grade of total iron; at the same time, by adding MgO to pellets, it can not only improve the quality of pellets Excellent metallurgical properties, and can also reduce the MgO content in sinter, so that the quality of sinter and pellets can be improved together.

Description

technical field [0001] The invention belongs to the technical field of binders for metallurgical sintering, and in particular relates to a magnesium-based pellet organic binder and a preparation and use method thereof. Background technique [0002] Ironmaking pellets have the advantages of good metallurgical properties and improved air permeability of the blast furnace charge column, and are considered to be a high-quality charge for optimizing the structure of the blast furnace charge. In order to meet the requirements of the iron concentrate production pellet process and blast furnace smelting on the chemical composition, strength and metallurgical properties of the charge, it is necessary to add a certain amount of binder to the pellet charge. At present, the most widely used binder is bentonite, including calcium bentonite, sodium bentonite and artificial sodium bentonite. The main component of bentonite is SiO 2 and Al 2 o 3 , adding in the pellet feed will reduce t...

Claims

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Application Information

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IPC IPC(8): C22B1/242
CPCC22B1/242
Inventor 侯恩俭马文张松汪琦全利钱丽杰
Owner ANSTEEL GRP MINING CO LTD
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