Treatment and Reforming of Waste Molding Sand Discharged during Casting Process Using High-temperature and High-pressure Water Reaction
Treatment and Reforming of Waste Molding Sand Discharged during Casting Process Using High-temperature and High-pressure Water Reaction
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高温高压水反应处理铸造过程中排出的废型砂
DOI：
10.3985/jjsmcwm.21.202
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
H. Daimon
中科院分区：
文献类型：
--
作者：
R. Tachibana;K. Okamoto;Nakai Shigeo;K. Fujie;H. Daimon
采用高温高压水对铸造过程中排放的废型砂进行处理和改造。废型砂的表面被1 . 2重量%的碳和0 . 0.065重量%的氮。在300℃、8。6 MPa的复合材料的质量分数分别为30%和64%。在相同条件下，以H2 O2为氧化剂，去除率均为64%.在450℃、40 MPa条件下，这些去除率与300℃、8。6 MPa.而在450℃、40 MPa、氧化剂存在下，这两种物质的去除率分别为88wt%和100wt%。由于与沙面高温高压水的反应，酸度值增加了一倍。然而，当在反应中使用氧化剂时，它并没有增加。
Waste molding sand discharged from the casting process was treated and reformed using high-temperature and high-pressure water. The surface of the waste molding sand was stained with 1 . 2 wt% of carbon and 0 . 065 wt% of nitrogen. Carbon and nitrogen that were removed from the surface by high-temperature and high-pressure water reaction at 300℃, 8 . 6 MPa were 30 wt% and 64 wt%, respectively. Under the same conditions, with H 2 O 2 as an oxidizer, these removal rates were both 64 wt%. In the reaction at 450℃, 40 MPa, these removal rates were similar to those at 300℃, 8 . 6 MPa. However, in the reaction at 450℃, 40 MPa with an oxidizer, these removal rates were 88 wt% and 100 wt%, respectively. The acidity value had doubled because of the reaction with high-temperature and high-pressure water on the sand surface. However, it did not increase when the oxidizer was used in the reaction.