CA6-MA-Cr2O3-Al2O3 ladle lining castable and preparation method thereof

A ca6-ma-cr2o3-al2o3, castable technology, applied in the field of ladle lining castables, can solve the problem that lightweight refractories cannot meet the requirements of energy saving, emission reduction and slag corrosion resistance at the same time, can not meet the requirements of green environmental protection, and do not have Promotion potential and other issues to achieve the effect of improving slag erosion resistance, excellent slag erosion resistance, and excellent penetration resistance
CN109776101AActive Publication Date: 2019-05-21WUHAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV OF SCI & TECH
Publication Date
2019-05-21

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Abstract

The invention relates to a CA6-MA-Cr2O3-Al2O3 ladle lining castable and a preparation method thereof. According to the technical scheme, 65-75wt% of CA6-MA-Cr2O3-Al2O3 particles, 5-8wt% of alpha-Al2O3micro powder, 3-6wt% of calcium aluminate cement, 7-10wt% of magnesium aluminate spinel fine powder and 8-12wt% of platy corundum fine powder are taken as raw materials, a polycarboxylate water reducing agent and water are added, and stirring, forming, demoulding and baking are carried out to prepare the CA6-MA-Cr2O3-Al2O3 ladle lining castable. The preparation method of the CA6-MA-Cr2O3-Al2O3 particles comprises the following steps of: mixing 60-70wt% of CA6, 4-8wt% of chromium oxide, 10-20wt% of MA and 10-15wt% of aluminum oxide, and ball milling, adding water, granulating, drying, calcining at 1650-1750 DEG C, crushing and screening to obtain the CA6-MA-Cr2O3-Al2O3 particles with three particle size levels respectively. The product prepared by the method has the advantages of high strength, low thermal conductivity, good thermal shock stability, excellent erosion resistance, energy conservation and environmental protection.
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Description

technical field

[0001] The invention belongs to the technical field of ladle lining castables. In particular a CA 6 -MA-Cr 2 o 3 -Al 2 o 3 Castable for ladle lining and preparation method thereof. Background technique

[0002] With the increasing emphasis on environmental protection, high-temperature industries such as iron and steel metallurgy with high energy consumption are facing huge pressure on energy conservation and emission reduction. As one of the important containers in the metallurgical industry, the ladle plays the role of storing, transporting and processing molten steel, and at the same time performs the task of refining outside the furnace. Therefore, the ladle lining refractory material is facing multiple pressures: on the one hand, with the improvement of the life of the converter, the increase of the continuous casting ratio and the improvement of the refining technology outside the furnace, the ladle lining material is facing an increasingly harsh e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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