公开(公告)号：US20240124998A1

公开(公告)日：2024-04-18

申请号：US18397411

申请日：2023-12-27

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yun LEI ,  Shiding WANG ,  Dongfang YANG ,  Wenhui MA ,  Zhanchao LI ,  Yakun ZHANG

IPC: C25C3/28 ,  C22B34/12

CPC classification number: C25C3/28 ,  C22B34/1277 ,  C22B34/1295

Abstract: The titanium-containing oxide slag, low-purity silicon and slagging fluxes are subject to reduction smelting together, and a bulk Si—Ti intermediate alloy is obtained by slag-metal separation; the obtained bulk Si—Ti intermediate alloy is crushed into Si—Ti intermediate alloy particles; and the obtained Si—Ti intermediate alloy particles are used as an anode, metallic molybdenum or metallic nickel as a cathode, metallic titanium as a reference electrode, and NaCl—KCl—NaF together with small amounts of Na3TiF6 or K3TiF6 as a molten salt, to carry out the electrolysis under a high-purity argon atmosphere at a temperature of 973 K. Ti in the Si—Ti intermediate alloy particles dissolved at the anode and deposited at the cathode, while Si in the Si—Ti intermediate alloy particles fell off from the anode as metallic silicon powder.

公开(公告)号：US20240308860A1

公开(公告)日：2024-09-19

申请号：US18303062

申请日：2023-04-19

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Feng LIANG ,  Junxi LI ,  Da ZHANG ,  Zhipeng XIE ,  Wenhui MA ,  Bin YANG

IPC: C01B35/04

CPC classification number: C01B35/04

Abstract: A rapid preparation method of transition metal borides includes steps of: using a tungsten rod as the cathode, and a block mixture of boron powder and metal oxide as the anode, the block mixture and the tungsten rod are placed in an plasma device; the plasma device is evacuated, and then filled with a buffer gas and an electric arc is started to obtain a transition metal boride. The present disclosure adopts the direct current arc plasma method with the advantages of simple operation, low cost, environmental friendliness and controllable reaction atmosphere to prepare the transition metal boride, the preparation process is simple, the preparation process is fast, and the environment will not be affected.