Adhesive used for preparing cold bond pellets from Ramsbottom carbon powder, preparation method and use method thereof

A technology for preparing cold-set pellets and powders is applied in the field of adhesives for preparing cold-set pellets from blue carbon powder and its preparation field. The effect of low requirements and short production cycles

Inactive Publication Date: 2010-08-04
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The traditional semi-coke powder cold-setting pellet adhesive is mainly an inorganic dry powder type adhesive, the cost of pelletizing is high, and too much inorganic powder will affect the industrialization of calcium carbide, etc. adverse effects on production
Patent CN 200410056871.1 also mentions the mixed solution type adhesive added with water and other liquids, but does not describe its dry adhesive powder in detail

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The component ratio (wt%) of blue charcoal pellet glue:

[0028] components

wt%

Aluminum oxide

5

Sodium silicate

10

polyvinyl alcohol

5

Calcium Oxide

1

acrylic acid

1

water

78

[0029] According to the ratio, take polyvinyl alcohol, acrylic acid, and water, add them to a four-neck bottle, stir for 20 minutes at a temperature of 100°C and a speed of 1500 rpm, and then cool naturally to room temperature to form a glue. According to the ratio, take aluminum oxide, sodium silicate, and calcium oxide, add them to the glue that has been cooled to room temperature, stir at 1000 rpm for 10 minutes, take it out and use it.

[0030] When preparing cold-set pellets, the mixing ratio of the adhesive of the present invention and blue charcoal is 1:20. After mixing evenly, press the balls with a ball press machine to produce cylindrical green balls with a diameter of 15-20 mm and a thickness o...

Embodiment 2

[0032] The component ratio (wt%) of blue charcoal pellet glue:

[0033] components

wt%

Aluminum oxide

5

Sodium silicate

10

polyvinyl alcohol

8

Calcium Oxide

1

acrylic acid

1

water

75

[0034] According to the ratio, take polyvinyl alcohol, acrylic acid, and water, add them to a four-neck bottle, stir for 20 minutes at a temperature of 100°C and a speed of 1500 rpm, and then cool naturally to room temperature to form a glue. According to the ratio, take aluminum oxide, sodium silicate, and calcium oxide, add them to the glue that has been cooled to room temperature, stir at 1000 rpm for 10 minutes, take it out and use it.

[0035] When preparing cold-set pellets, the mixing ratio of the adhesive of the present invention and blue charcoal is 1:20. After mixing evenly, the pellets are pressed with a pelletizing machine to produce cylindrical pellets with a diameter of 15 to 20 mm and a thi...

Embodiment 3

[0037] The component ratio (wt%) of blue charcoal pellet glue:

[0038] components

wt%

Aluminum oxide

5

Sodium silicate

10

polyvinyl alcohol

10

Calcium Oxide

1

acrylic acid

1

water

73

[0039] According to the ratio, take polyvinyl alcohol, acrylic acid, and water, add them to a four-neck bottle, stir for 20 minutes at a temperature of 100°C and a speed of 1500 rpm, and then cool naturally to room temperature to form a glue. According to the ratio, take aluminum oxide, sodium silicate, and calcium oxide, add them to the glue that has been cooled to room temperature, stir at 1000 rpm for 10 minutes, take it out and use it.

[0040] When preparing cold-set pellets, the mixing ratio of the adhesive of the present invention and blue charcoal is 1:20. After mixing evenly, the pellets are pressed with a pelletizing machine to produce cylindrical pellets with a diameter of 15 to 20 mm and a th...

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Abstract

The invention belongs to the technical field of an adhesive used for metallurgy, in particular to an adhesive used for preparing cold bond pellets from Ramsbottom carbon powder, a preparation method and a use method thereof. The adhesive is prepared from the following ingredient in percentage by weight: 3 to 5 percent of aluminium oxide, 5 to 10 percent of sodium silicate, 3 to 10 percent of polyving akohol, 0.5 to 1 percent of crylic acid, 0.5 to 1 percent of calcium oxide and the balance of water, and the weight sum of the ingredients is 100 percent. The method comprises the following steps: firstly, grafting modified polyving akohol through crylic acid; then, adding other ingredients; and finally, preparing the adhesive through high-speed mixing. During the preparation of the pellets, the mixing proportion with the Ramsbottom carbon is controlled at a value about 1/20. The invention is suitable for small blast furnace iron manufacture, and can be used for replacing parts of coke in industries such as metallurgical furnace charge, chemical engineering coal gas raw materials, calcium carbide production raw materials and the like.

Description

technical field [0001] The invention belongs to the technical field of metallurgical adhesives, and in particular relates to an adhesive used for preparing cold-set pellets from semi-coke powder and a preparation method thereof. Background technique [0002] Semi-coke is a semi-coke product made of weakly caking or non-caking coal with high volatile content, which is carbonized by medium and low temperature carbonization to remove tar substances in coal and most of the volatilization. Semi-coke is also called semi-coke. Because the flame of this product is blue when it burns, it is called blue charcoal. [0003] As a new type of carbon material, semi-coke (semi-coke) has gradually replaced metallurgical coke and is widely used in calcium carbide, Production of silicon metal, ferroalloy, ferrosilicon, silicon carbide, ferrochrome, fertilizer, etc. However, 30% of coke powder will be produced during production, crushing, transshipment, loading and unloading, and use. Due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/243
Inventor 任天斌黄超韩宇钟震
Owner TONGJI UNIV
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