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Method for preparing nano iron and oxide thereof by taking sintered ash as raw material

A nano-iron oxide and sintered ash technology, which is applied in ferrous oxide, iron oxide, nanotechnology and other directions, can solve the problems of inability to remove harmful elements, affect the normal production of blast furnaces, waste resources and the environment, and achieve simple reaction equipment. Easy to control, low cost, water saving effect

Pending Publication Date: 2021-07-27
河南济源钢铁(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And because the sinter ash contains potassium, sodium, copper, zinc, lead and other harmful elements for iron and steel smelting, the conventional treatment method not only cannot remove these harmful elements, but also enriches these elements in the blast furnace, which seriously affects the efficiency of the blast furnace. normal production
The accumulation and landfill treatment of dust will cause waste of resources and environmental pollution.

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  • Method for preparing nano iron and oxide thereof by taking sintered ash as raw material

Examples

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Effect test

Embodiment 1

[0022] A method for preparing nano ferric oxide by using sintered ash as raw material, the specific operation steps are:

[0023] 1) Take 80g of sintered ash, wash it 8 times with deionized water according to the ratio of 1:1, use electromagnetic to select iron oxide for each cleaning, and mix the solid substances separated by magnetic each time to obtain primary solid substances;

[0024] 2) Wash the primary solid material obtained in step 1) again with deionized water, and perform magnetic separation again after cleaning, measure the conductivity of the remaining water after magnetic separation, and retain the solid material for secondary magnetic separation;

[0025] 3) Repeat step 2) for the second magnetic separation solid material until the conductivity is stable (the conductivity is the same as or close to the conductivity of the deionized water used), and the primary purified solid material is obtained;

[0026] 4) The primary purified solid material prepared in step 3...

Embodiment 2

[0031] A method for preparing nano ferrous oxide with sintered ash as raw material, the specific operation steps are:

[0032] 1) Take 80g of sintered ash, wash it 6 times with deionized water according to the ratio of 1:2.5, use electromagnetic to select iron oxide for each cleaning, and mix the solid substances separated by magnetic separation each time to obtain primary solid substances;

[0033] 2) Wash the primary solid material obtained in step 1) again with deionized water, and perform magnetic separation again after cleaning, measure the conductivity of the remaining water after magnetic separation, and retain the solid material for secondary magnetic separation;

[0034] 3) Repeat step 2) for the second magnetic separation solid material until the conductivity is stable (the conductivity is the same as or close to the conductivity of the deionized water used), and the primary purified solid material is obtained;

[0035] 4) The primary purified solid material prepared...

Embodiment 3

[0040] A method for preparing nano-iron with sintered ash as raw material, the specific operation steps are:

[0041] 1) Take 80g of sintered ash, wash it 6 times with deionized water according to the ratio of 1:3, use electromagnetic to select iron oxide for each cleaning, and mix the solid substances separated by magnetic each time to obtain primary solid substances;

[0042] 2) Wash the primary solid material obtained in step 1) again with deionized water, and perform magnetic separation again after cleaning, measure the conductivity of the remaining water after magnetic separation, and retain the solid material for secondary magnetic separation;

[0043] 3) Repeat step 2) for the second magnetic separation solid material until the conductivity is stable (the conductivity is the same as or close to the conductivity of the deionized water used), and the primary purified solid material is obtained;

[0044] 4) The primary purified solid material prepared in step 3) is subject...

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Abstract

The invention relates to the technical field of nano material preparation, in particular to a method for preparing nano iron and oxide thereof by taking sintered ash as a raw material. According to the invention, nanometer iron oxide is extracted from sintering ash of a steel enterprise, so that the reaction raw materials are easy to obtain, the cost is low, the reaction equipment is simple and easy to control, the reaction time is short, and no pollution is caused to the environment; the purity of the extracted nano iron oxide is improved by creatively adopting a mode of combining water washing, magnetic separation and alkali washing; and in the step of extracting the nano iron oxide, firstly, most soluble impurities and non-magnetic substances are removed by water washing to save NaOH, and after alkali washing, a leaching mode is selected for water washing to save water resources.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing nanometer iron and its oxides by using sintered ash as a raw material. Background technique [0002] Iron is one of the most abundant metal elements in the earth's crust. Normally, there are mobile dislocations between metallic iron atoms, but when the size of metallic iron is reduced to the nanoscale, the grain size is too small to generate dislocations. Wrong, and the stress generated when it is squeezed is even greater, so that the metallic iron becomes quite hard. Nano-iron not only has high strength and hardness, but also has good plasticity and toughness. This is because nano-iron has a large interface, and the atomic arrangement of the interface is quite chaotic. Iron materials exhibit some novel mechanical properties. [0003] Nano-iron particles are generally black, have a strong ability to absorb infrared rays, and have a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/04C01G49/06C01G49/08B22F9/22B22F1/00B82Y40/00
CPCC01G49/04C01G49/06C01G49/08B22F9/22B82Y40/00C01P2004/62C01P2004/64B22F1/054
Inventor 杨宇王维白瑞娟常胜利翟进周月吴豪明周甜甜何丹景连霞孔怡王娜
Owner 河南济源钢铁(集团)有限公司
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