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Pellet composite binder for widening moisture range of pelletizing raw materials and using method of composite binder

A binder and organic binder technology, applied in the field of composite binders for pellets, can solve the problems of narrow suitable water range for pelletizing, and achieve the effect of improving the quality of green pellets and alleviating bursting

Inactive Publication Date: 2021-03-30
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the binder has strict requirements on the moisture content of iron ore raw materials in the production process of existing iron ore pellets, resulting in the problem that the range of suitable moisture for pelletizing is too narrow, the present invention provides a pelletizer that broadens the moisture range of pelletizing raw materials. Composite adhesives and methods of use

Method used

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  • Pellet composite binder for widening moisture range of pelletizing raw materials and using method of composite binder
  • Pellet composite binder for widening moisture range of pelletizing raw materials and using method of composite binder
  • Pellet composite binder for widening moisture range of pelletizing raw materials and using method of composite binder

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Embodiment 1

[0021] The invention relates to a composite binder for pellets which widens the water range of pelletizing raw materials, and its component mass percentage is: 90% of sodium bentonite and 10% of composite organic binder. The mass percent of the composite organic binder is 40% of water-absorbing resin; 20% of sodium humate; 20% of carboxymethyl cellulose sodium; and 20% of polyacrylamide. All components are mixed according to the proportion.

Embodiment 2

[0027] The invention relates to a composite binder for pellets which widens the water range of pelletizing raw materials, and its component mass percentage is: 90% of sodium bentonite and 10% of composite organic binder. The mass percentage of the composite organic binder is 45% of water-absorbing resin; 18% of sodium humate; 18% of carboxymethyl cellulose sodium; and 19% of polyacrylamide. All components are mixed according to the proportion.

Embodiment 3

[0029] The invention relates to a composite binder for pellets which widens the water range of pelletizing raw materials, and its component mass percentage is: 90% of sodium bentonite and 10% of composite organic binder. The mass percent of the composite organic binder is 50% of water-absorbing resin; 15% of sodium humate; 17% of carboxymethyl cellulose sodium; and 18% of polyacrylamide. All components are mixed according to the proportion.

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Abstract

In order to solve the problem that in an existing iron ore pellet production process, a binder has strict requirements for the moisture of an iron ore raw material, so that the moisture range suitablefor pelletizing is too narrow, the invention provides the pellet composite binder for widening the moisture range of the pelletizing raw materials and a using method of the composite binder. One purpose is to provide a composite organic binder which can broaden the suitable moisture range of pelletizing, and the other purpose is to apply the binder to iron ore raw material pelletizing as a binderso as to improve the quality of green pellets. The composite binder provided by the invention is composed of the following components in percentages by weight: 90-95% of sodium bentonite; 5%-10% of an organic binder, wherein the organic binder is prepared from the following components in percentages by weight: 40-50% of water-absorbent resin; 15%-20% of sodium humate; 17%-20% of sodium carboxymethyl cellulose; and 18%-20% of polyacrylamide.

Description

technical field [0001] The invention belongs to the technical field of metallurgical raw materials and pretreatment, and in particular relates to a composite binder for pellets that broadens the moisture range of pelletizing raw materials. Background technique [0002] In the existing production of iron ore pellets, the moisture control of iron concentrate raw materials is one of the important links to ensure the pelletizing efficiency. In particular, the concentrates of some concentrators are transported by pipelines and directly dehydrated after entering the pelletizing plant. However, the dehydrated iron concentrates contain relatively high moisture content, generally 9.0-10%. In the actual production of pellets, the method of drying and pretreating the raw materials entering the factory is often used to reduce the moisture content of the iron concentrate raw materials to below the suitable raw material moisture content of the binder, and then pelletize after batching wit...

Claims

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Application Information

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IPC IPC(8): C22B1/242
CPCC22B1/242C22B1/2406
Inventor 李宗胜陈洪彬王兴锋高源崔金楠柴青平侯立程
Owner ANSTEEL GRP MINING CO LTD
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