Dr Axion Co., Ltd.

Yoosung Co., Ltd.

Man Sig Lee

Myung Hwan Kim

Min A Bae

Ju Dong Lee

Min Choul Kim

Gang Woo Lee

Dong Hyun Moon

Min Gwang Seok

Ju Hyun Ko

Hyung Joon Shin

Young Seog Kim

Jeong Wook Park

Sang Ho Ha

Ki Myoung Kwon

Woo Chun Kim

Jae Jeong Lee

The present disclosure relates to an inorganic binder composition for casting, including: water glass of 40 to 70 parts by weight; nano-silica of 5 to 35 parts by weight; a Li-based water resistant additive of 0.1 to 10 parts by weight; an organic silicon compound of 0.1 to 10 parts by weight; and an anti-sand burning additive of 1 to 10 parts by weight. Furthermore, the present disclosure relates to a core manufactured by using the inorganic binder composition and a cast manufactured so as to include the core.

Inorganic binder composition for casting

The present disclosure relates to a manufacturing method of a core using an inorganic binder, a core manufactured thereby, a manufacturing method of a casting product with a core using an inorganic binder, a casting product manufactured thereby, and a manufacturing system of a core using an inorganic binder.

Manufacturing method of core and casting product using inorganic binder

A separation, purification and recovery method of SF, HFCs or PFCs is disclosed, which comprises a step for forming a gas hydrate including components in addition to SF, HFCs or PFCs. It is possible to separate and recover fluoro-gas at a much lower cost as compared to a conventional method for thereby obtaining an economical effect and preventing an emission of SF, HFCs or PFCs which corresponds to Non-COhaving a higher earth warming index, which leads to preventing an earth warming phenomenon. So, the present invention might be widely applied.

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Growing community of inventors

Yangsan-si, South Korea

Man Sig Lee