Composite fluorine-free slag modifier

A technology of slag adjusting agent and weight ratio, which is applied in the field of compound fluorine-free slag adjusting agent, can solve the problems of not being able to form mud guns, strong erosion force and scouring force, etc., to improve slag viscosity, good air permeability, and solve fluorine pollution Effect

Inactive Publication Date: 2010-12-22
韶关市同宇冶金材料有限公司
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  • Abstract
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Problems solved by technology

The disadvantage is that it has a strong erosive and scouring force on refractory materials such as iron mud sleeves and plugging mud.
This kind of slag not only erodes and scours the tap hole channel during the tapping process, but also cannot form a stable and firm mud gun after the plug is blocked.
As a result, the work of the iron gate is in a vicious circle

Method used

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  • Composite fluorine-free slag modifier
  • Composite fluorine-free slag modifier

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and embodiment the present invention is further described:

[0024] A compound fluorine-free slagging agent, its chemical composition and weight ratio are: SiO 2 8-24, CaO4-14, Al 2 o 3 20-28, Fe 2 o 3 20-30 , MgO3-6, MnO3-8, the particle size of the composite fluorine-free slag control agent is 34x24x12 mm 3 ; The melting point of the composite fluorine-free slagging agent is ≤1300°C.

[0025] see figure 1 , a manufacturing method of a composite fluorine-free slagging agent, through crushing and grinding, Fe 2 o 3 ≥30%, Al 2 o 3 ≥35% bauxite is processed into 40-100 mesh granules, then Iceland stone with CaO>99% and manganese ore with MnO≥20% are added for batching, after mixing evenly, dry press into granules of 34x24x12 mm 3 Formed products are then packaged, inspected and put into storage, and finally leave the factory.

[0026] Composite fluorine-free slagging agent is a neutral material with a particle siz...

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Abstract

The invention relates to a composite fluorine-free slag modifier, which comprises the following chemical components in parts by weight: 8 to 24 parts of SiO2, 4 to 14 parts of CaO, 20 to 28 parts of Al2O3, 20 to 30 parts of Fe2O3, 3 to 6 parts of MgO, and 3 to 8 parts of MnO. The composite fluorine-free slag modifier can effectively improve the viscosity of slag, ensure excellent permeability of a stock column and activate a hearth to ensure good slag-iron separation, can reinforce the melting process without corroding lining and equipment, ensures performance of various reducing reactions, avoids occurrence of various unexceptional situations, provides guarantee for normal operation of a blast furnace, and provides a new way for fluorine pollution.

Description

technical field [0001] The invention belongs to the technical field of metallurgical materials and relates to a composite fluorine-free slagging agent suitable for use in blast furnaces. Background technique [0002] Throughout the history of human beings and the social environment, people understand that human beings need the care of the environment, and the environment needs human protection. Only in this way can human beings and the environment live in harmony, natural disasters and chemical pollution can be alleviated, and human beings can live healthily. , happiness and tranquility, the economy can develop steadily and sustainably. [0003] The performance of fluoride: Fluorine belongs to the halogen element in the periodic table of elements, and fluorine is the most non-metallic element among the halogen elements. It belongs to the diatomic non-polar molecule and belongs to the molecular crystal in solid state. The dispersion force is combined, so the melting point an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/02
Inventor 余义鸿李宏程
Owner 韶关市同宇冶金材料有限公司
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