Cementing agent for producing pellet ore and preparing process thereof

Abstract

The invention discloses a new bonding agent for producing pellet ore and the method for preparing said bonding agent, belonging to metallurgy field. The comprised bonding agent and their proportion by weight are as follows: water soluble organic matter 1- 50, clay 10- 30, borax 1- 2, active calcium 10- 40, active carbon 10- 25, and magnesium lime cement 8- 15; said water soluble is selected from one of starch ether, cellulose ether or polyvinyl alcohol or mixture of them at any ratio. The bonding agent is added into process producing pellet ore, and the physical property and metallurgy performance are dramatically increased, and it is characterized by saving production cost and reducing environmental pollution.

Description

technical field [0001] The invention relates to a binder, in particular to a binder for producing pellets and a preparation method thereof, belonging to the field of metallurgy. Background technique [0002] As a good blast furnace charge, pellets have the advantages of high grade, good strength, and uniform particle size. People in the industry call them "Shunqi pills" for blast furnaces. The combination of acid pellets and high-basicity sinter can form a reasonable blast furnace charge structure, so that blast furnace ironmaking can achieve the purpose of increasing production and saving coke, and improving economic benefits. [0003] Binder is an indispensable and important component for making iron concentrate powder into pellets. It is required to have good cohesiveness and pelletization. The green pellets produced should have good anti-knock performance, high dry and wet Ball compressive strength and drop strength; after roasting, the finished ball not only has physic...

AI Technical Summary

Problems solved by technology

But at the same time, there are also defects such as high price, physical properties and metallurgical properties of finished balls that cannot fully meet the requirements of blast furnace technology, so it has not been widely used in industry.

In response to the above situation, in recent years, an organic / inorganic composite binder with bentonite as the main component has been developed. The amount is about 1.5% to 5%), which improves the quality of the pellets to a certain extent, but still cannot fundamentally solve the problem. There are still some problems such as poor antiknock performance and low strength during use. If you want to further There are also great limitations in improving the pellet grade