公开(公告)号：US20180087120A1

公开(公告)日：2018-03-29

申请号：US15716582

申请日：2017-09-27

Applicant: Institute of Process Engineering, Chinese Academy of Sciences

Inventor： Tao Qi ,  Lingyun Yi ,  Desheng Chen ,  Lina Wang ,  Hongxin Zhao ,  Yahui Liu ,  Weijing Wang ,  Hongdong Yu

IPC: C21B13/00 ,  C21B13/10 ,  C21B11/08 ,  C21B3/02 ,  F27D3/16

CPC classification number: C21B13/0006 ,  C21B3/02 ,  C21B11/08 ,  C21B13/0013 ,  C21B13/006 ,  C21B13/10 ,  C21B2100/42 ,  C21B2100/44 ,  C21B2100/66 ,  C21B2200/00 ,  F27D3/16 ,  F27D2003/164

Abstract: The present invention relates to method and apparatus for treating iron-contained raw material using bath smelting furnace. An iron-contained raw material is mixed with a reducing agent. The mixture is added into a bath smelting furnace. The enriched oxygen is blown into the bath. The smelt is conducted at a temperature of 1200-1600° C. Compared with the traditional process of “sintering/pellet-blast furnace smelting” or “rotary furnace reduction-electrical furnace smelting separation”, the present invention has the remarkable advantages of short process, strong raw material adaptability, high product quality, low energy consumption, low pollution, etc. The present invention provides a new technology direction for effectively and comprehensively utilizing the iron-contained resource and has a wide application prospect.

公开(公告)号：US09896742B2

公开(公告)日：2018-02-20

申请号：US14783848

申请日：2014-04-10

Applicant: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES

Inventor： Tao Qi ,  Lina Wang ,  Desheng Chen ,  Hongxin Zhao ,  Yahui Liu ,  Tianyan Xue ,  Jingkui Qu

IPC: C01G31/02 ,  C22B3/10 ,  C01G23/053 ,  C22B3/44 ,  C22B3/00 ,  C22B34/22 ,  C22B34/12 ,  C22B1/02 ,  C22B3/26 ,  B01J6/00 ,  C22B1/00 ,  C22B5/12 ,  C22B9/02

CPC classification number: C22B34/1245 ,  B01J6/001 ,  C01G23/053 ,  C01G23/0536 ,  C01G31/02 ,  C22B1/00 ,  C22B1/02 ,  C22B3/0005 ,  C22B3/10 ,  C22B3/44 ,  C22B5/12 ,  C22B9/023 ,  C22B34/1209 ,  C22B34/1259 ,  C22B34/22 ,  Y02P10/234

Abstract: A method for processing vanadium-titanium magnetite finished ores by using a wet process. The method comprises the steps: extracting vanadium from vanadium-titanium magnetite finished ores and processing, by using the vanadium extraction method, obtained leaching residue by using a wet process, so as to obtain titanium; and calcining the remaining liquid extracted during the vanadium extraction, so as to prepare ferric oxide. The flow of the method is short, and the energy consumption is low, thereby avoiding waste of a titanium resource.

公开(公告)号：US20170218479A1

公开(公告)日：2017-08-03

申请号：US15406804

申请日：2017-01-16

Applicant: Institute of Process Engineering, Chinese Academy of Sciences

Inventor： Tao Qi ,  Desheng Chen ,  Lingyun Yi ,  Lina Wang ,  Hongxin Zhao ,  Yahui Liu ,  Weijing Wang ,  Hongdong Yu

IPC: C22B34/12 ,  C22B34/22

CPC classification number: C22B34/22 ,  C01G23/04 ,  C01G23/047 ,  C01G31/00 ,  C21B11/00 ,  C21B15/00 ,  C22B34/1204

Abstract: The present invention relates to a method for converting and separating vanadium, titanium, and iron from the vanadium-titanium-iron concentrate in one step, which includes the steps as below. (1) The vanadium-titanium-iron concentrate is mixed and roasted together with addition agent and reducing, agent, and thereby vanadium-containing pig iron and vanadium enriched slag are obtained. (2) The vanadium titanium enriched slag is leached in water and filtered, and thereby vanadium-containing solution and titanium slag are obtained. The technical features of the present invention are as below. By the new process of sodium reduction coupling, a new system of low-temperature smelting multiphase reaction separation is constructed. The reduction of iron, sodiumizing of vanadium, and the melting separation process of the vanadium titanium enriched slag and the iron are achieved in one step. Three products, i.e., the vanadium-containing pig iron, the vanadium-containing solution, and the titanium slag are produced.

公开(公告)号：US11566333B2

公开(公告)日：2023-01-31

申请号：US16647530

申请日：2018-07-13

Applicant: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES

Inventor： Hui Zhang ,  Xulong Dong ,  Tao Qi

IPC: H01M10/38 ,  C25C1/20 ,  C22B3/04 ,  C22B3/06 ,  C25C7/02 ,  C25C7/04

Abstract: A method for cleanly extracting metallic silver includes: mixing an acidic solution containing Ce4+ and NO3− with a silver-containing material for leaching; after the leaching is completed, carrying out a solid-liquid separation to obtain a leaching solution containing Ce3+ and Ag+; and electrolyzing the leaching solution, wherein an oxidation reaction of Ce3+ occurs at an anode to realize a regeneration of Ce4+ and an electrolytic reduction occurs at a cathode to reduce Ag+ to obtain the metallic silver. Ce4+ is used as a leaching agent and an intermediate oxidant to implement a cyclic operation of solution leaching and electrolytic regeneration on the silver-containing material. Almost no NOx and waste liquid are caused by the extraction process, and the invention is clean and environmentally friendly.

公开(公告)号：US10316392B2

公开(公告)日：2019-06-11

申请号：US15406804

申请日：2017-01-16

Applicant: Institute of Process Engineering, Chinese Academy of Sciences

Inventor： Tao Qi ,  Desheng Chen ,  Lingyun Yi ,  Lina Wang ,  Hongxin Zhao ,  Yahui Liu ,  Weijing Wang ,  Hongdong Yu

IPC: C22B34/22 ,  C21B11/00 ,  C21B15/00 ,  C22B34/12 ,  C01G31/00 ,  C01G23/04 ,  C01G23/047

Abstract: The present invention relates to a method for converting and separating vanadium, titanium, and iron from the vanadium-titanium-iron concentrate in one step, which includes the steps as below. (1) The vanadium-titanium-iron concentrate is mixed and roasted together with addition agent and reducing agent, and thereby vanadium-containing pig iron and vanadium enriched slag are obtained. (2) The vanadium titanium enriched slag is leached in water and filtered, and thereby vanadium-containing solution and titanium slag are obtained. The technical features of the present invention are as below. By the new process of sodium reduction coupling, a new system of low-temperature smelting multiphase reaction separation is constructed. The reduction of iron, sodiumizing of vanadium, and the melting separation process of the vanadium titanium enriched slag and the iron are achieved in one step. Three products, i.e., the vanadium-containing pig iron, the vanadium-containing solution, and the titanium slag are produced.

公开(公告)号：US11384443B2

公开(公告)日：2022-07-12

申请号：US16652991

申请日：2018-09-03

Applicant: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES

Inventor： Hui Zhang ,  Tao Qi

IPC: C25C1/20 ,  C25C7/02 ,  C25C7/04

Abstract: A method for producing metallic silver by electro-deposition, including electrolyzing an electrolyte solution containing Ce(NO3)3 in an anode zone and an electrolyte solution containing AgNO3 in a cathode zone by using an electrolytic cell with a specific diaphragm, wherein the electrolyte solution in the anode zone is not allowed to enter the cathode zone. After the electrolyzing is complete, the metallic silver with a high purity is obtained at the cathode, and a Ce4+-containing solution is obtained in the anode zone.