Preparation method of aluminum-calcium multifunctional slag washing material
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A multi-functional, aluminum-calcium technology, applied in the field of iron and steel smelting, can solve the problems of reducing the service life of equipment, short effective time, increasing production costs, etc., to achieve the effect of ensuring the use effect, good reducibility, and reducing the amount of use
Inactive Publication Date: 2021-08-13
ZHENGZHOU DONGSHENG METALLURGY NEW MATERIAL
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[0003] In traditional slag washing materials, fluorite is used as a melting aid material, and CaF 2 The components erode the equipment during use, reducing the service life of the equipment; at the same time, the fluorine volatilizes at high temperature, which not only pollutes the environment, but also harms the human body; moreover, the effective time of action is short due to volatilization, and more slag washing materials need to be consumed , increase the production cost; at the same time, in the preparation process, a high-temperature melting environment is required, which further increases the cost
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Embodiment 1
[0029] see figure 1 , a method for preparing aluminum-calcium multifunctional slag washing material, comprising the following steps:
[0030] S1, raw material preparation: prepare raw materials according to the following mass fractions, 5% to 20% Al, 10% to 40% Al 2 o 3 , 30% to 50% of CaO, 5% to 20% of additives.
[0031] Among them, the additives consist of MgO and SiO 2 composition. Preferably, the additive consists of 40% to 60% of MgO and 40% to 60% of SiO 2 composition.
[0032] MgO improves impurity removal effect, SiO 2 Promote melting, facilitate slag formation in advance, and further improve product performance.
[0033] S2, drying: put the CaO into a drying box for drying.
[0034] When the slagging material is not dry, it is easy to add hydrogen to the molten steel; because of its easy water absorption, CaO is dried before processing to remove the residual water in it, reduce the water absorption rate, keep it dry, and ensure the use effect.
[0035] Prefe...
Embodiment 2
[0041] As a preferred solution, the difference from Example 1 is that in step S1 raw material allocation, the raw materials are prepared according to the following mass fractions, 20% Al, 15% Al 2 o 3 , 50% CaO, 8% MgO, 7% SiO 2 .
Embodiment 3
[0043] As a preferred solution, the difference from Example 1 is that in step S1 raw material allocation, the raw materials are prepared according to the following mass fractions, 15% Al, 30% Al 2 o 3 , 45% CaO, 5% MgO, 5% SiO 2 .
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Abstract
The invention discloses a preparation method of an aluminum-calcium multifunctional slag washing material, and belongs to the technical field of steel smelting. The preparation method of the aluminum-calcium multifunctional slag washing material comprises the following steps: S1, preparing raw materials; S2, drying; and S3, mixing. In the step S1, the raw materials comprises, by mass, 5%-20% of Al, 10%-40% of Al2O3, 30%-50% of CaO and 5%-20% of an additive; in the step S2, the CaO is put into a drying box and dried; and in the step S3, the Al and the Al2O3 are crushed until the particle size is less than 5mm, the CaO is crushed until the particle size is less than 60mm, and the additive is added for mixing. According to the preparation method, finished products and the raw materials do not contain polluting elements, so that the safety and the environmental protection property are remarkable; and a high-temperature melting environment is not needed in the preparation process, so that the energy digestion is reduced, and safety is further improved.
Description
technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to a method for preparing an aluminum-calcium multifunctional slag washing material. Background technique [0002] Reducing production costs and improving product quality are the primary goals of the steelmaking industry. Slag washing, as a simple treatment method to obtain clean steel, has good effects such as low cost and fast slag removal. [0003] In traditional slag washing materials, fluorite is used as a melting aid material, and CaF 2 The components erode the equipment during use, reducing the service life of the equipment; at the same time, the fluorine volatilizes at high temperature, which not only pollutes the environment, but also harms the human body; moreover, the effective time of action is short due to volatilization, and more slag washing materials need to be consumed , increasing the production cost; at the same time, in the preparation process, ...
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