Pellet additive and preparation method thereof

A technology of additives and pellets, which is applied in the field of pellet additives and its preparation, can solve problems such as complex measurement, achieve the effects of smooth ball surface, uniform particle size, and improved compressive strength

Inactive Publication Date: 2014-08-27
BEIJING YUHANG TONGHUI ENERGY SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to avoid the defects of complex measurement in the prior art and

Method used

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  • Pellet additive and preparation method thereof
  • Pellet additive and preparation method thereof
  • Pellet additive and preparation method thereof

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[0011] The principles and features of the present invention will be described below, and the examples given are only used to explain the present invention, not to limit the scope of the present invention.

[0012] Said pellet additive is characterized by the following components (mass percentage): carboxyethyl cellulose 2-5%, carboxypropyl cellulose 3-5%, povidone (PVP) 1-4 %, gelatin 3-7%, gelatinizable starch 2-10%, cationic polyacrylamide 1-3%, anionic polyacrylamide 2-8%, high temperature glue 2-8%, sodium humate 5-15%, Polyvinyl alcohol 2-4%, modified bentonite 20-40%, soda ash 2-5%.

[0013] Further, the component composition (mass percentage) is preferably: carboxyethyl cellulose 5%, carboxypropyl cellulose 5%, povidone (PVP) 4%, gelatin 7%, gelatinizable starch 10%, Cationic polyacrylamide 1%, anionic polyacrylamide 4%, high temperature glue 8%, sodium humate 10%, polyvinyl alcohol 4%, modified bentonite 37%, soda ash 5%.

[0014] The method for preparing a pellet additive ...

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Abstract

The invention relates to the technical field of a pelletizing craft process of powdered iron during a pelletizing process, particularly to a pellet additive and a preparation method thereof. The pellet additive mainly consists of hydroxyethyl cellulose, hydroxypropyl cellulose, povidone (PVP), gelatin, gelatinized starch, cationic polyacrylamide, anionic polyacrylamide, high temperature glue, sodium humate, polyvinyl alcohol, sodium bentonite, sodium carbonate and other substances. The pellet additive is prepared through batching, mixing, testing and other steps. The problem that the pelletizing rate of the powered iron during the palletizing process is low is solved. The pellet additive and the preparation method thereof have the advantages that the rate of return mine is reduced, a large amount of cost is saved, the compressive strength and the drop strength of pellets can be significantly improved, pelletized granularity is uniform, pelletized surfaces are smooth, and the compressive strength of finished balls is significantly improved.

Description

technical field [0001] The invention relates to the technical field of pelletizing process of fine iron powder in the pelletizing process, in particular to a pelletizing additive and a preparation method thereof. Background technique [0002] In the iron fine powder of the prior art, bentonite is added to the iron fine powder as a binder in the pelletizing process, and the addition amount is large (2%-3%) during use, resulting in a low ball forming rate and uneven viscosity. Contents of the invention [0003] The object of the present invention is to avoid the defect of complex measurement in the prior art and provide a pellet additive and a preparation method thereof, thereby effectively solving the defect in the prior art. [0004] In order to achieve the above object, the technical solution adopted by the present invention is: the described pellet additive is characterized in that it is composed of the following components (mass percentage): 2-5% of carboxyethyl cellulo...

Claims

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Application Information

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IPC IPC(8): C22B1/242
Inventor 刘伟
Owner BEIJING YUHANG TONGHUI ENERGY SCI & TECH
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