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Industrial briquette for molten iron production and gas generator and preparation method thereof

A technology for gas production and industry, applied in the field of industrial briquette and its preparation, can solve problems such as corrosion of production equipment and equipment used, difficulty in pipeline transportation, etc., and achieve the effects of convenient addition, saving equipment investment and simple preparation method.

Active Publication Date: 2013-11-20
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the pipeline transportation of solid and liquid mixtures is also difficult
A small amount of alkali is added to the composite binder, which will cause corrosion to the production equipment and use equipment of briquette

Method used

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  • Industrial briquette for molten iron production and gas generator and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] see figure 1 , the preparation method of the industrial briquette that is used for molten iron production or gas-making of the present invention, it comprises the steps:

[0023] 1. Preparation of composite binder: carboxymethyl cellulose and hydroxypropyl methyl cellulose or hydroxyethyl methyl cellulose or ethyl cellulose are compounded into a 0.5-5.0% aqueous solution; in this aqueous solution, carboxymethyl cellulose Methyl cellulose accounts for 0.3~3%, hydroxypropyl methyl cellulose or hydroxyethyl methyl cellulose or ethyl cellulose accounts for 0.2~2%, by mass percentage; (step 101)

[0024] 2. Coal powder preparation: after crushing and sieving, obtain coal powder with a particle diameter below 5mm; (step 102)

[0025] 3. Mix the composite binder with the coal powder, stir evenly (step 103), and press into a certain size of briquette by a double-roll forming machine (step 104).

[0026] The drop strength is used as an index to measure the quality of coal briq...

Embodiment 1

[0028] The composite binder is composed of carboxymethylcellulose CMC450 and hydroxypropylmethylcellulose HPMC. Firstly, CMC450 and HPMC were made into solutions with a concentration of 6% and 4%, respectively, and then the two solutions were mixed in a ratio of 1:1 to form a composite binder. Every 100 parts by weight of coal powder is mixed with 10 parts by weight of the composite binder and stirred evenly, and then the coal is molded by a molding machine.

[0029] After testing, the crush resistance of the briquettes is 90.1% after being formed for 4 hours.

Embodiment 2

[0031] The composite binder is composed of carboxymethylcellulose CMC450 and hydroxypropylmethylcellulose HPMC. First, 95 parts by weight of water, 3 parts by weight of CMC450 and 2 parts by weight of HPMC were mixed to make a composite binder. Every 100 parts by weight of coal powder is mixed with 10 parts by weight of the composite binder and stirred evenly, and then the coal is formed by a forming machine.

[0032] After testing, the crush resistance of the briquettes after 2 hours of molding is 93.6%.

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Abstract

The invention relates to industrial briquette for molten iron production and gas generator and a preparation method thereof. The preparation method comprises the following steps: a. preparation of composite bonding agent: preparing solution of 0.5-5.0 percent with carboxymethyl cellulose and hydroxypropyl methylcellulose or hydroxyethylmethyl cellulose or ethyl cellulose, wherein the carboxymethyl cellulose accounts for 0.3-3 percent by weight percentage, the hydroxypropyl methylcellulose or the hydroxyethylmethyl cellulose or the ethyl cellulose accounts for 0.2-2 percent by weight percentage; b. preparation of coal powder: preparing the coal powder with the particle diameter below 5mm through crushing and screening; c. mixing of the composite bonding agent and the coal powder: mixing well and pressing the mixture through a roller briquetting machine to obtain the briquette with a certain size. The briquette preparation method is simple, the briquette has high strength and good thermal stability, the production cost is reasonable, and the raw materials are available from a variety of sources.

Description

technical field [0001] The invention relates to briquette technology, in particular to an industrial briquette used for molten iron production or gas production and a preparation method thereof. Background technique [0002] China is a country with a large steel production capacity. In 2006, the steel production exceeded 300 million tons, 80% of which were produced by the blast furnace ironmaking process. The blast furnace ironmaking process is a production method with high energy consumption, high pollution and resource consumption. Non-blast furnace ironmaking has received extensive attention because of its low energy consumption and pollution. It includes direct reduction and smelting reduction. The COREX process is the smelting reduction ironmaking process. The advantages of the process are that it uses less or no coke, has a compact structure, and occupies a small area. Therefore, it is currently the core of solving the problems of high energy consumption, high pollutio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/04C10L5/14
Inventor 钱晖张琢周渝生杨俊和李肇毅吴信慈张群
Owner BAOSHAN IRON & STEEL CO LTD
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