Method of using vanadium titanium rotary furnace steel slag as cement iron correction material

A converter steel slag and iron correction technology, applied in cement production and other directions, can solve the problems of sulfuric acid slag pollution, environmental impact, economic loss, etc., to achieve economic and social benefits, reduce cement production costs, and speed up comprehensive utilization. Effect

Inactive Publication Date: 2006-06-14
WASTE & OLD MATERIAL BRANCH OF PANGANG GROUP GANGCHENG ENTERPRISE CORP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Panzhihua Iron and Steel Plant produces about 300,000 tons of steel slag every year. The current solution to this problem is to open up a slag yard and carry out slag dumping. However, as time goes by, the service life of the original slag yard is gradually shortening
For this reason, it is also necessary to find another land to open up a new slag yard, resulting in more economic losses and greater environmental pollution
On the other hand, the iron correction raw materials currently used by major cement plants have many problems such as sulfuric acid slag polluting the environment and high iron powder prices. For the further requirement of correcting raw materials, it is imminent to find a process that can replace iron correcting raw materials for cement production with vanadium-titanium converter steel slag

Method used

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  • Method of using vanadium titanium rotary furnace steel slag as cement iron correction material

Examples

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Effect test

Embodiment 1

[0011] The cement clinker obtained by mixing 5% steel slag powder, 69% limestone, 9% clay and other mixtures, grinding, calcining, cooling and grinding again, its compressive strength, stability, setting time It meets the requirements of the national standard of cement, and the proportion of steel slag powder is CaO: 39.5%; Fe 2 o 3 : 25.68%; SiO 2 : 13.69%; Al 2 o 3 : 3.86%; MFe≤1%; V 2 o 5 : 1.73%; TiO 2 ≤3%.

Embodiment 2

[0013] The cement clinker obtained by mixing 3% steel slag powder, 68% limestone, 7% clay and other mixtures, grinding, calcining, cooling and grinding again, its compressive strength, stability, setting time It meets the requirements of the national standard of cement, and the proportion of steel slag powder is CaO: 38.2%; Fe 2 o 3 : 22.86%; SiO 2 : 11.26%; Al 2 o 3 : 2.34%; MFe≤1%; V 2 o 5 : 1.568%; TiO 2 ≤3%.

Embodiment 3

[0015] The cement clinker obtained by mixing 3% steel slag powder, 70% limestone, 9% clay and other mixtures, grinding, calcining, cooling and grinding again, its compressive strength, stability, setting time It meets the requirements of the national standard of cement, and the proportion of steel slag powder is CaO: 38.2%; Fe 2 o 3 : 22.86%; SiO 2 : 11.26%; Al 2 o 3 : 2.34%; MFe≤1%; V 2 o 5 : 1.568%; TiO 2 ≤3%.

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Abstract

The present invention relates to a method capable of using vanadium-titanium converter steel slag as cement iron correction raw material. Said method includes the following steps: cooling molten steel slag, breaking, magnetic separation to obtain steel slag powder, mixing steel slag powder, limestone and clay, grinding them, calcining, cooling and secondary grinding so as to obtain the invented cement clinker.

Description

technical field [0001] The invention relates to a method for processing converter steel slag and using it as a raw material for correcting cement iron quality, in particular to a method for using vanadium-titanium converter steel slag as a raw material for cement iron quality correction. Background technique [0002] The Panzhihua Iron and Steel Plant produces about 300,000 tons of steel slag every year. The current solution to this problem is to open up a slag yard and carry out slag dumping. However, as time goes by, the service life of the original slag yard is gradually shortening . For this reason, it is also necessary to find another land to open up a new slag yard, thereby causing more economic losses and greater environmental pollution. On the other hand, the iron correction raw materials currently used by major cement plants have many problems such as sulfuric acid slag polluting the environment and high iron powder prices. For the further requirement of correctin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/147
CPCY02P40/10
Inventor 陈启斌杨岳新戚明强钱强邹峰
Owner WASTE & OLD MATERIAL BRANCH OF PANGANG GROUP GANGCHENG ENTERPRISE CORP
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