Title:
RECYCLING METHOD FOR MANUFACTURING HIGH SPEED STEEL MASTER ALLOY
Document Type and Number:
WIPO Patent Application WO/2023/074987
Kind Code:
A1
Abstract:
A method for recycling an HSS processing process waste comprises: a pre-treatment step of pre-treating an HSS processing process waste; a primary melting step of primarily melting the pre-treated processing process waste and at least one of ferromolybdenum, ferrotungsten, and ferrocobalt at a temperature of 1300 to 2500°C to form a primary molten material; and a preparation step of subjecting the primary molten material to ingot casting to prepare an HSS master alloy, wherein the pre-treatment step comprises: a separation step of separating the HSS processing process waste according to the composition; and a mixing step of mixing the separated HSS processing process waste with an oxide including at least one of CaO, SiO2, Al2O3, and MgO to form a mixture, the melting point of the mixture being 800 to 1700°C.
Inventors:
KIM BAE GYUN (KR)
MIN HAN NA (KR)
MIN HAN NA (KR)
Application Number:
PCT/KR2021/016775
Publication Date:
May 04, 2023
Filing Date:
November 16, 2021
Export Citation:
Assignee:
T&E INC (KR)
International Classes:
C22C1/03; C22C38/22; C22C38/24
Foreign References:
| CN102952921A | 2013-03-06 | |||
| CN1331626C | 2007-08-15 | |||
| KR20210127479A | 2021-10-22 | |||
| JP2005169514A | 2005-06-30 | |||
| US6206814B1 | 2001-03-27 |
Attorney, Agent or Firm:
SHIN, Moo Yun (KR)
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