Bentonite cellulose ether iron ore pellet additive, and preparation method and application thereof

A cellulose ether and additive technology, which is applied in the field of bentonite cellulose ether iron ore pellet additive and its preparation, and pellet binder, can solve the problem of high production cost, poor physical properties and metallurgical properties of finished pellets, etc. problem, to achieve the effect of strong wrapping performance, excellent heat absorption and thermal conductivity, and improving the grade and quality of all iron

Inactive Publication Date: 2012-02-01
刘贵堂 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the defects of high production cost, poor physical properties and metallurgical properties of finished pellet balls when cellulose ether is used as the main component of the pellet binder, and provide A new iron powder binder for iron ore pellets. The binder uses ultrafine cellulose ether as its main binder component. It has low production cost and strong bonding performance, and can effectively improve the green pellet strength and Burst temperature, thereby significantly improving the grade and quality of the finished ball all-iron

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1 Preparation of bentonite cellulose ether iron ore pellet additive

[0044] Weigh each raw material according to the following parts by weight (unit: kg): methyl cellulose ether 15 kg, iron powder 7.5 kg, hydroxyethyl starch 135 kg, sodium bentonite 850 kg;

[0045] Add iron powder and methyl cellulose ether into a micro-powder mill (micro-powder mill produced by Shanghai Xieke Machinery Co., Ltd., its model is "HGM8021") and grind for 40 minutes to obtain component 1; the methyl cellulose in component 1 The particles of cellulose ether are all 600-2000 mesh particles, most of which have a particle size distribution of 1000-2000 mesh;

[0046] Add hydroxyethyl starch and sodium bentonite to a micropowder mill (micropowder mill produced by Shanghai Xieke Machinery Co., Ltd., the model is "HGM8021") and grind to 800 mesh for 20 minutes to obtain component 2;

[0047] Mix component 1 and component 2 in a pulverizer, and continue pulverizing for 10 minutes to ob...

Embodiment 2

[0048] Example 2 Preparation of bentonite cellulose ether iron ore pellet additive

[0049] Weigh each raw material according to the following parts by weight (unit: kg): ethyl cellulose ether 5 kg, iron powder 1 kg, hydroxypropyl starch 90 kg, sodium bentonite 500 kg;

[0050] Add iron ore concentrate and ethyl cellulose ether into a micro-powder mill (micro-powder mill produced by Shanghai Xieke Machinery Co., Ltd., its model is "HGM8021") and grind for 40 minutes to obtain component 1; The particles of ethyl cellulose ether are all 600-2000 mesh particles, most of which have a particle size distribution of 1000-2000 mesh;

[0051] Add hydroxypropyl starch and sodium bentonite to a micropowder mill (micropowder mill produced by Shanghai Xieke Machinery Co., Ltd., the model is "HGM8021") and pulverize to 800 mesh for 20 minutes to obtain component 2;

[0052] Mix component 1 and component 2 in a pulverizer, and continue pulverizing for 10 minutes to obtain.

Embodiment 3

[0053] Example 3 Preparation of bentonite cellulose ether iron ore pellet additive

[0054] Weigh each raw material according to the following parts by weight (unit: kg): carboxymethyl cellulose ether 30kg, iron powder 12kg, acryl starch 190 kg, sodium bentonite 1200 kg;

[0055] After pulverizing the hematite to 100 mesh and adding carboxymethyl cellulose ether to a micro-powder mill (micro-powder mill produced by Shanghai Xieke Machinery Co., Ltd., the model is "HGM8021") for pulverization for 40 minutes to obtain component 1; The carboxymethyl cellulose ether particles in component 1 are all 600-2000 mesh particles, and the particle size distribution of most of the particles is 1000-2000 mesh;

[0056] Add propylene-based starch and sodium-based bentonite to a micropowder mill (micropowder mill produced by Shanghai Xieke Machinery Co., Ltd., the model is "HGM8021") and pulverize to 800 mesh for 20 minutes to obtain component 2;

[0057] Mix component 1 and componen...

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Abstract

The invention discloses a bentonite cellulose ether iron ore pellet additive, and a preparation method and application thereof, and belongs to the field of metallurgy. The pellet additive is prepared from the following raw materials: cellulose ether, iron powder, starch ether and sodium bentonite; and the preparation method comprises the following steps of: grinding the cellulose ether and the iron powder to obtain a component 1; grinding the starch ether and the sodium bentonite to obtain a component 2; and mixing the component 1 and the component 2, and continuously grinding to obtain the pellet additive. The bentonite cellulose ether iron ore pellet additive has excellent adhesive property and wrapping property, can effectively improve the physical properties and metallurgical properties of finished pellets, comprehensively improve the total iron grade, quality and yield of the finished pellets and also can effectively reduce production cost and energy consumption, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a pellet binder for metallurgy, in particular to a bentonite cellulose ether iron ore pellet additive for producing iron ore pellets and a preparation method thereof. The invention belongs to the bonding agent for iron ore pellets drug field. Background technique [0002] Binder is an indispensable and important component for making iron concentrate powder into pellets. A binder with good performance will play an important role in improving the quality of pellets and ironmaking economic and technical indicators, promoting energy saving and reducing consumption, and realizing environmental friendliness. to a very important role. In order to achieve the above technical effects, the binder is required to have good cohesiveness and ball forming properties, and the green balls produced should have good anti-knock performance, high dry and wet ball compression and drop strength; the finished balls after roasting Not only its compr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/244
Inventor 刘贵堂钱国春
Owner 刘贵堂
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