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Recovery method of nanometer iron powder from cold rolling emulsion liquid

A nano-iron powder and recovery method technology, applied in metal rolling, metal rolling, workpiece surface treatment equipment, etc., can solve the problems of high cost and uneven particle size of nano-iron powder, and achieve low cost, concentrated particle size distribution, The effect of easy access to raw materials

Inactive Publication Date: 2005-01-05
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nano-iron powder produced by these methods has uneven particle size and high cost

Method used

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  • Recovery method of nanometer iron powder from cold rolling emulsion liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare 500ml of cleaning agent according to the following formula:

[0029] Na 2 CO 3 8

[0030] Na 2 SiO 3 3

[0031] Detergent TX-10 2

[0032] n-Butanol 0.3

[0033] water 100

[0034] Take 100 g of the magnetic filtration product from the cold rolling production line, and centrifuge the magnetic filtration product on a centrifuge. The rotating speed of the centrifuge is 10000 rev / min, and the centrifugation time is 35min. After separation, most of the rolling oil in the magnetic filtration product floats on the upper layer, and the lower layer is the oily iron powder. The weight of the oily iron powder is 22g.

[0035] For the first washing, pour the prepared cleaning agent into a container containing oil-containing iron powder, the weight ratio of the two is 6:1, heat to 75°C and maintain this temperature, mechanically stir for 125 minutes, and then centrifuge for 15 minutes in a centrifuge , ...

Embodiment 2

[0042] Prepare 500ml of cleaning agent according to the following formula:

[0043] Na 2 CO 3 10

[0044] Na 2 SiO 3 1

[0045] Detergent TX-10 1

[0046] n-Butanol 2

[0047] water 95

[0048]Take 110 g of the magnetic filtration product from the cold rolling production line, and centrifuge the magnetic filtration product on a centrifuge. The rotating speed of centrifuge is 10000 revs / min, and centrifugation time is 35min, and most rolling oil in the magnetic filtration product after separation floats on the upper layer, and the lower layer is oil-containing iron powder, and the weight of oil-containing iron powder is weighed as 24g.

[0049] For the first washing, pour the prepared cleaning agent into a container containing oil-containing iron powder, the weight ratio of the two is 5:1, heat to 70°C and maintain this temperature, mechanically stir for 100 minutes, and centrifuge for 15 minutes in a centrifuge ,...

Embodiment 3

[0056] Prepare 500ml of cleaning agent according to the following formula:

[0057] Na 2 CO 3 3

[0058] Na 2 SiO 3 5

[0059] Detergent TX-10 0.3

[0060] n-Butanol 1

[0061] water 90

[0062] Take 120 g of the magnetic filtration product from the cold rolling production line, and centrifuge the magnetic filtration product on a centrifuge. The rotating speed of centrifuge is 10000 revs / min, and centrifugation time is 35min, and most rolling oil in the magnetic filtration product after separation floats on the upper layer, and the lower layer is oily iron powder, and the weight of oily iron powder is weighed as 26g.

[0063] For the first washing, pour the prepared cleaning agent into a container containing oil-containing iron powder, the weight ratio of the two is 4:1, heat to 80°C and maintain this temperature, mechanically stir for 130 minutes, and centrifuge for 15 minutes in a centrifuge , After se...

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Abstract

A method for recovering the iron nanoparticles from the emulsion used by cold rolling includes such steps as centrifugal separation to remove the most of dirt oil, and washing with detergent which is prepared from Na2CO3, Na2SiO3, detergent TX-10, n-butanol and water through proportional mixing.

Description

technical field [0001] The invention relates to a method for recovering nanometer iron powder from cold-rolled emulsion magnetic filtration products. technical background [0002] With the development of my country's automobile and home appliance industries, the demand for cold-rolled steel sheets is also increasing. During the cold rolling production process, the emulsion needs to be continuously sprayed between the roll and the steel plate. The cold rolling emulsion is composed of water and rolling oil mixed by mechanical stirring, which plays the role of cooling, cleaning and lubrication. Rolling oil is expensive and is one of the main consumption materials in cold rolling mills. Therefore, the emulsion is recycled in cold rolling production. Due to the large amount of iron powder produced by the huge friction between the roll and the steel plate during the cold rolling process, the quality of the emulsion is reduced, which affects the quality of cold-rolled products, an...

Claims

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Application Information

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IPC IPC(8): B21B45/02C10M175/04C23G5/00
CPCY02P70/10
Inventor 赵平曹彩英张月萍徐志栋王敏张培杰
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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