Poured material for foundry ladle bottom and its pouring process and mold
A castable and molten iron technology, which is used in molds, manufacturing tools, cement mixing devices, etc., can solve the problems of low medium and high temperature strength, high water content, and low service life, and achieve high medium and high temperature strength, low water content, Effect of bottom radian specification
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[0011] According to the requirements for the use of refractory materials at the bottom of molten iron tanks at home and abroad, the physical and chemical indicators of castables at the bottom of molten iron tanks are shown in Table 1:
[0012] Table 1 Physicochemical indicators of bottom pouring of molten iron tanks
[0013]
project
al 2 o 3
(%)
Refractoriness
(℃)
Compressive strength (MPa)
1300℃×3h
Bulk density (g / cm 3 )
110℃×24h
standard value
≥60
≥1790
≥35
≥2.5
[0014] According to the above requirements, considering the matching of tank bottom castables and tank body refractory bricks (high alumina bricks), select super-grade bauxite aggregates, corundum, silica powder, magnesia, admixtures, etc. The main components and weight percentages are shown in Table 2; See Table 3 for the weight percentage of the original castable components.
[0015] ...
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