Composite adhesive for metallurgical pellet and production method thereof

A composite adhesive and organic adhesive technology, applied in the field of adhesives used in the metallurgical pellet stage, can solve problems such as fuel and natural resource consumption, environmental impact, etc., achieve high yield, protect the environment, and save energy resource effect

Inactive Publication Date: 2015-02-11
LIAONING JINSHI TECH GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to statistics, the annual output of my country's metallurgical pellets is as high as 130 million tons, and the annual consumption of bentonite is nearly 3 million tons. From this, it can be seen that my country consumes more fuel for ironmaking and raw materials for neutralization reactions. It not only causes a huge consumption of fuel and natural resources, but also has a huge impact on the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A steel mill 10m 2 Pellet shaft furnace with moistening mill mixing equipment. For every 500,000 tons of pellets, 0.75 tons of artificial sodium bentonite was originally consumed. Later, the composite adhesive for metallurgical pellets of the present invention is used. The specific composition These are: 28.8 million tons of sodium humate, 12,200 tons of sodium carboxymethyl cellulose, and 3 million tons of bentonite; the result is an increase of 3,000 tons of iron and an increase of 4 million yuan in benefits.

Embodiment 2

[0037] A steel factory 8m 2 Pellet shaft furnace, with moistening mill mixing equipment, for each output of 400,000 tons of pellets, the original consumption of artificial sodium bentonite was 5,200 tons; later, the composite adhesive for metallurgical pellets of the present invention was used. The composition is: 0.194 million tons of limonite, 0.006 million tons of hydroxypropyl methylcellulose, and 20,000 tons of bentonite; as a result, the iron is increased by 2,000 tons and the benefit is increased by 1.6 million yuan.

Embodiment 3

[0039] A steel mill 10m 2 Pellet shaft furnace with moistening mill mixing equipment. For each production of 500,000 tons of pellets, it originally consumes 7,000 tons of artificial sodium bentonite; later, it uses a composite adhesive for metallurgical pellets of the present invention. The composition is: 3,486 tons of coal, 0.004,400 tons of polyacrylamide and emulsifier, and 3,500 tons of bentonite; as a result, iron was increased by 3,000 tons, and the mixing equipment of the moistening mill was cancelled, which saved 5 million yuan in operating costs for the moistening mill. .

[0040] It can be seen from Examples 1 to 3 that when a composite binder for metallurgical pellets of the present invention is used for pelletizing, the amount of composite binder is generally controlled at 1% of the total pellets produced. ~1.5%, the amount of bentonite consumed is generally between 0.5%~0.75%, which is compared with the national average level of 2.2% bentonite consumption; when usin...

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PUM

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Abstract

The invention discloses a composite adhesive for a metallurgical pellet and a production method thereof, relates to an adhesive used in a metal smelting process and a method for producing the adhesive, and aims to provide an adhesive for favorably improving the metal smelting performance of subsequent smelting and reducing the smelting energy consumption and the emission of pollution gases. The composite adhesive for the metallurgical pellet comprises organic powder and bentonite, wherein the mass ratio of the organic powder to the bentonite is 1:1; the organic powder comprises a dispersant and an organic adhesive in percentage by mass: 95-99.5 percent of dispersant and 0.5-5 percent of organic adhesive. In order to produce the composite adhesive, the three steps of taking the materials, manufacturing the organic powder and manufacturing the composite adhesive are required.

Description

Technical field [0001] The invention relates to a binder used in a metal smelting process, in particular to a binder used in the metallurgical pelletizing stage. Background technique [0002] Metallurgical pellets are fine ore powder mixed with a small amount of binder, and then rely on capillary force and mechanical force of rotating motion to create green balls with a diameter of 8-16mm. Then they are dried on the roasting equipment and Fe2O3 is reprocessed in a high-temperature oxidizing atmosphere. The crystalline bridge bond is consolidated into a spherical ironmaking raw material with high grade, good strength and uniform particle size. [0003] The binders used in metallurgical pellets generally include two categories: one is organic binder, and the other is inorganic binder. Organic binders are rarely used in my country due to their high price, low dosage, difficulty in dispersion, and strict requirements on the pelletizing process of iron ore powder. The main component o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/244C22B1/242
Inventor 任瑞刚
Owner LIAONING JINSHI TECH GROUP
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