Orient Tantalum Industry applies for a patent related to Nb rod and its preparation method; the process can make Nb rod grains break up uniformly

August 25 news, according to information from the China National Intellectual Property Administration, Ningxia Orient Tantalum Industry Co., Ltd. has applied for a patent titled “Nb Rod with φ50mm~160mm for Nuclear Fusion and Preparation Method.” The publication number is CN122599105A, the application number is CN202610557806.3, the publication date is August 18, 2026, and the application date is April 24, 2026. Inventors include Xie Xinpu, Wang Dongxin, Li Zhaobo, Zhou Xiaojun, Zhang Jiuhai, Dong Wenbiao, Ma Xiaoxiang, and Liu Tingting. The patent agency is Ningxia Sanyuanxin Intellectual Property Agency Partnership (General Partnership), and the patent agent is Yang Li. Classification numbers are G21B1/11 and C22F1/18.
The patent abstract shows that this invention provides a φ50mm~160mm niobium rod for nuclear fusion and a preparation method, relating to the technology of large-specification niobium rods. First, according to φ190?mm~φ380?mm×1300?mm~1600?mm, the cast ingot is sawn to obtain a first billet. Then the first billet is subjected to drop-round forging and acid pickling to obtain a second billet. Next, the second billet undergoes a first heat-treatment procedure, followed by upsetting and drawing-out forging, and acid pickling to obtain a first heat-treated billet. Then the first heat-treated billet undergoes a second heat-treatment procedure, followed by upsetting and drawing-out forging, and acid pickling to obtain a second heat-treated billet. The second heat-treated billet is then subjected to a third heat-treatment procedure, followed by upsetting and drawing-out forging, and acid pickling to obtain a third billet. The maximum temperature of the first heat-treatment procedure is higher than the maximum temperature of the second heat-treatment procedure and higher than the maximum temperature of the third heat-treatment procedure. The third heat-treated material is then forged, subjected to flaw detection, and machine-processed to obtain a sample rod material. The sample rod material is then subjected to a final heat-treatment procedure to obtain a finished rod, so that by crushing and a lengthwise growth cycle, the grains are broken up and made uniformly distributed.
Dongfang Tantalum is a leading enterprise in China’s rare metal tantalum-niobium-beryllium industry. Its core products have prominent technical barriers and it is a key backbone company in China’s rare metal new materials sector. The company was established on April 30, 1999 and was listed on the Shenzhen Stock Exchange on January 20, 2000. Both its registered address and office address are in Ningxia Hui Autonomous Region.
The company’s main business is the R&D, production, and sales of tantalum-niobium-beryllium metal and alloy products. Its industry classification under Shenwan is Nonferrous Metals—Minor Metals—Other Minor Metals. It also covers three popular concept sectors: 3D printing, HEPS, and nuclear fusion.
In the first half of 2026, Dongfang Tantalum recorded operating revenue of RMB 1.04 billion. Among 10 comparable companies in the industry, it ranked 8th. In this metric, the industry leader is Xiying Co., Ltd. with RMB 31.573 billion, and the second is Guireg Platinum with RMB 22.652 billion. The industry average is RMB 7.222 billion and the median is RMB 2.894 billion. In the company’s principal business for the period, the processing and manufacturing segment contributed revenue of RMB 1.038 billion, accounting for 99.84%; the remaining revenue came from other supplementary businesses, with a scale of RMB 1.6168 million, accounting for 0.16%. In the same period, the company achieved net profit of RMB 123 million, ranking 7th in the industry. The industry leader, Xiying Co., Ltd., had net profit of RMB 1.594 billion, and the second, Minxin Resources, had RMB 1.17 billion. The industry average is RMB 444 million and the median is RMB 144 million.
The recent patent situation of Ningxia Dongfang Tantalum Industry Co., Ltd. is as follows:
Manufacturing method for加工刀具 (cutting tools) — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610696331.6 — 2026-05-20 — Publication/announcement no. CN122231331A — Publication/announcement date 2026-06-19 — Inventors: Wang Chong, Li Gang, Wang Dongxin, Li Jixian, Zhou Xiaojun, Wang Rong, Zhang Jinting, Zhao Gang, Ni Hangxing, Cui Jian
Method for preparing TiC-reinforced Ta-2.5W alloy ingot, TiC-reinforced Ta-2.5W alloy ingot, and TiC-reinforced Ta-2.5W alloy plate — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610595461.0 — 2026-04-30 — Publication/announcement no. CN122357976A — Publication/announcement date 2026-07-10 — Inventors: Liu Chuang, Bai Zhangjun, Chen Fei, Wang Dongxin, Zhou Xiaojun, Li Zicheng, Lin Junjun, Liang Bin, Liu Yi, Fang Huiliang
Oxygen-pressure leaching method for tantalum-niobium ore — Invention patent — Published, CN202610586551.3 — 2026-04-29 — Publication/announcement no. CN122445919A — Publication/announcement date 2026-07-24 — Inventors: Wang Ze, Zhang Zhenkai, Wang Dongxin, Zhou Xiaojun, Zhang Biqin, Sa Meiling, Li Hui, Le Jianfeng
Preparation method and application of self-consuming electrodes of tantalum-niobium alloy — Invention patent — Published, CN202610558765.X — 2026-04-25 — Publication/announcement no. CN122480627A — Publication/announcement date 2026-07-31 — Inventors: Liu Yi, Bai Zhangjun, Xu Qiang, Chen Fei, Lin Junjun, Zhou Xiaojun, Fang Huiliang, Chen Qian
φ50mm~160mm niobium rod for nuclear fusion and its preparation method — Invention patent — Published, CN202610557806.3 — 2026-04-24 — Publication/announcement no. CN122599105A — Publication/announcement date 2026-08-18 — Inventors: Xie Xinpu, Wang Dongxin, Li Zhaobo, Zhou Xiaojun, Zhang Jiuhei, Dong Wenbiao, Ma Xiaoxiang, Liu Tingting
Continuous crystallization method for fluorine-containing complex salt — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610509094.8 — 2026-04-17 — Publication/announcement no. CN122079231A — Publication/announcement date 2026-05-26 — Inventors: Li Shaolong, Pan Guixu, Yan Qinghu, Le Jianfeng, Guo Haotian, Zheng Chaoliang, Zhou Xiaojun
Potassium fluotantalate crystallization method based on multi-point temperature control and gradient cooling — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610479305.8 — 2026-04-13 — Publication/announcement no. CN122076058A — Publication/announcement date 2026-05-26 — Inventors: Zhang Yu, Ma Dongpeng, Guo Tao, Wang Dongxin, Zhou Xiaojun, Li Hui, Zhang Weineng, Le Jianfeng, Wang Shihai, Ma Shaohua
Device and method for granulation and pelletizing of metal tantalum powder — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610478537.1 — 2026-04-13 — Publication/announcement no. CN122274179A — Publication/announcement date 2026-06-26 — Inventors: Lin Fukun, Du Zhe, Wang Dongxin, Zhou Xiaojun, Zhang Kai, Yan Jingyi, Liu Lita, Gui Yeping
Forging method for grain refinement of large-sized superconducting niobium materials and large-sized superconducting niobium plates — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610369254.3 — 2026-03-25 — Publication/announcement no. CN122125150A — Publication/announcement date 2026-06-02 — Inventors: Zhang Jiuhei, Liu Shuqi, Wang Dongxin, Li Zhaobo, Liu Tingting, Su Kangning, Xie Xinpu, Wang Ning
High specific capacity tantalum powder and its preparation method — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610347817.9 — 2026-03-20 — Publication/announcement no. CN122210060A — Publication/announcement date 2026-06-16 — Inventors: Niu Yanbing, Chen Xueqing, Li Hui, Zhou Xiaojun, Zhang Xueqing, Wang Yuna, Li Xiaolong, Li Yonggang
Method for widening forging of niobium alloy plates — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610337041.2 — 2026-03-19 — Publication/announcement no. CN122327123A — Publication/announcement date 2026-07-03 — Inventors: Li Jinh; Sun Wei; Li Zhaobo; Xie Xinpu; Zhang JiaqI
Production execution management system for high-quality tantalum-niobium products — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610337158.0 — 2026-03-19 — Publication/announcement no. CN122414607A — Publication/announcement date 2026-07-17 — Inventors: Ren XiaO, Li Zhaobo, Su Kangning, Luo Min, Xu Hailong, Jin Guixia
Niobium-titanium superconducting wire rod and preparation method thereof — Invention patent — Granted, CN202610227112.3 — 2026-02-26 — Publication/announcement no. CN121726160B — Publication/announcement date 2026-04-24 — Inventors: Xie Yongxu, Chen Lin, Wu Jian, Wang Dongxin, Yao Yalei, Zhou Xiaojun, Zhu Baohui, Ma Jianzheng, Tong Zekun, Chen Hongmei, Qin Liang, Wang Huil, Wu Qiaowei
Gas curtain structure and annealing furnace — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610203717.9 — 2026-02-12 — Publication/announcement no. CN122214617A — Publication/announcement date 2026-06-16 — Inventors: Xie Yongxu, Chen Lin, Cui Xinmin, Chen Hongmei, Wang Dongxin, Ma Jianzheng, Zhou Xiaojun, Wan Mingkai, Tong Zekun, Wu Qiaowei, Yao Yalei
Tantalum wire cleaning and winding device and winding method — Invention patent — Granted, CN202610194529.4 — 2026-02-11 — Publication/announcement no. CN121669744B — Publication/announcement date 2026-04-10 — Inventors: Xing Gaofeng, Yu Ming, Xie Yongxu, Ma Jianzheng, Tong Zekun, Wang Dongxin, Xu Jian, Qin Liang, Wu Jian, Wu Qiaowei, Yao Yalei, Chen Hongmei, Wang Wei, Yao Junwu
Processing method of tantalum-niobium raw materials — Invention patent — Granted, CN202610182042.4 — 2026-02-09 — Publication/announcement no. CN121653416B — Publication/announcement date 2026-05-19 — Inventors: Lei Xin, Liu Chengyi, Le Jianfeng, Wang Ze, Zhang Haoran, Zhou Xiaojun, Li Hui, Zhao Chenyu, Jin Guixia
Tensile testing device for electrical components — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610152978.2 — 2026-02-03 — Publication/announcement no. CN121805004A — Publication/announcement date 2026-04-07 — Inventors: Xu Jian, Xing Gaofeng, Hao Zhenhua
High-temperature oxidation-resistant coating, additive manufacturing niobium-tungsten alloy-Nb521 with high-temperature oxidation-resistant coating, and preparation method thereof — Invention patent — Granted, CN202610153628.8 — 2026-02-03 — Publication/announcement no. CN121610781B — Publication/announcement date 2026-04-10 — Inventors: Wang Rong, Zhao Gang, Wang Lafei, Wang Chong, Liu Jian, Cui Jian
Material feeding system and method for decomposition and leaching of tantalum-niobium ore — Invention patent — Granted, CN202610150814.6 — 2026-02-03 — Publication/announcement no. CN121610660B — Publication/announcement date 2026-04-14 — Inventors: Wang Shihai, Huang Wanhui, Xie Jingyuan, Wang Dongxin, Zhou Xiaojun, Guo Tao, Zhang Yu, Li Hui, Le Jianfeng, Liu Chengyi
Method for preparing tantalum rods for tantalum wire by vertical melting and sintering metal scrap tantalum billet strips — Invention patent — Granted, CN202610140275.8 — 2026-02-02 — Publication/announcement no. CN121624425B — Publication/announcement date 2026-04-10 — Inventors: Li Chengcheng, Xie Yongxu, Chen Lin, Zhou Xiaojun, Tong Zekun, Ma Jianzheng, Jin Guixia, Guo Linbo
Multi-frequency eddy-current flaw detection equipment and method for ultra-small-diameter and ultra-thin-walled tubes cold-rolled from tantalum alloy with Φ6.5mm-Φ8.5mm — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610111802.2 — 2026-01-27 — Publication/announcement no. CN121762677A — Publication/announcement date 2026-03-31 — Inventors: Ren XiaO, Li Zhaobo, Su Kangning, Song Xin, Wei JIayu, Zhang Zhizhou
High-temperature test method for tantalum-tungsten alloy — Invention patent — Published, CN202610057502.0 — 2026-01-16 — Publication/announcement no. CN121656026A — Publication/announcement date 2026-03-13 — Inventors: Zhang Renhui, Xu Ninghui, Yin JI; Wang Wei, Zhang Yonglong, Duan Xiangxiang, Yang Jing, Li Jie
Apparatus and method for preparing capacitor-grade tantalum powder — Invention patent — Published, CN202610055996.9 — 2026-01-15 — Publication/announcement no. CN121820676A — Publication/announcement date 2026-04-10 — Inventors: Zheng Jinfeng, Zhou Xiaojun, Cheng Yuewei, Wang Dongxin, Liang Hongyuan, Zheng Wenlong, Wang Xiaoming, Yang Ruixin, Li Yanqin, Ma Xiaoying, Li Ming, Zhang Weilun, Ma Yang, Han Yujie
Apparatus for preparing tantalum powder and method for preparing tantalum powder — Invention patent — Published, CN202610052758.2 — 2026-01-15 — Publication/announcement no. CN121820675A — Publication/announcement date 2026-04-10 — Inventors: Zheng Jinfeng, Cheng Yuewei, Zhou Xiaojun, Wang Dongxin, Liang Hongyuan, Wang Xiaoming, Yang Ruixin, Zheng Wenlong, Li Yanqin, Ma Xiaoying, Li Ming, Zhang Weilun, Ma Yang, Han Yujie
Apparatus for preparing tantalum powder for capacitors and method for preparing tantalum powder for capacitors — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610055467.9 — 2026-01-15 — Publication/announcement no. CN121847798A — Publication/announcement date 2026-04-14 — Inventors: Zheng Jinfeng, Wang Dongxin, Zhou Xiaojun, Cheng Yuewei, Liang Hongyuan, Wang Xiaoming, Yang Ruixin, Zheng Wenlong, Li Yanqin, Ma Xiaoying, Li Ming, Zhang Weilun, Ma Yang, Han Yujie
Method and apparatus for determining model and superconducting niobium ingot preparation parameters — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202610045422.3 — 2026-01-14 — Publication/announcement no. CN121959920A — Publication/announcement date 2026-05-01 — Inventors: Xu Qiang, Bai Zhangjun, Chen Fei, Liang Bin, Zhou Xiaojun, Liu Yi, Lin Junjun, Chen Qian, Fang Huiliang, Li Zicheng
High-purity Nb — Invention patent — Published, CN202511954706.6 — 2025-12-23 — Publication/announcement no. CN121651430A — Publication/announcement date 2026-03-13 — Inventors: Wang Ze, Wang Dongxin, Yang Yunyun, Peng Jun, Le Jianfeng, Zhang Biqin, Sa Meiling, Zhang Cheng, Zhang Zhenkai
A method for preparing 6N and above high-purity Nb using an oxalic-acid niobium precursor body — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202511952604.0 — 2025-12-23 — Publication/announcement no. CN121778782A — Publication/announcement date 2026-04-03 — Inventors: Wang Ze, Wang Dongxin, Zhang Cheng, Zhang Weineng, Peng Jun, Sa Meiling, Zhang Biqin, Yang Yunyun, Guo Tao, Lei Xin
High-purity Ta — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202511954839.3 — 2025-12-23 — Publication/announcement no. CN121800221A — Publication/announcement date 2026-04-07 — Inventors: Wang Ze, Wang Dongxin, Peng Jun, Yang Yunyun, Li Hui, Zhang Biqin, Sa Meiling, Zhang Cheng, Zhang Yu, Zhang Zhenkai
Method for preparing high-purity lamellar tantalum powder by dry ball milling — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202511927859.1 — 2025-12-19 — Publication/announcement no. CN121755720A — Publication/announcement date 2026-03-31 — Inventors: Liu Ling, Wang Dongxin, Wu Shaopeng, Dong Ningli, Luo Wen, Wang Pingxia, He Jiani
An integrated machine for automatic winding of tantalum wire with paper pad at a single station — Invention patent — Assignment of application rights and patent rights; Substantive examination in progress and granted, CN202511299132.3 — 2025-09-11 — Publication/announcement no. CN120864311A — Publication/announcement date 2025-10-31 — Inventor: Wang Jian
High-purity metallic tantalum products and preparation method thereof — Invention patent — Published, CN202511273836.3 — 2025-09-08 — Publication/announcement no. CN121023207A — Publication/announcement date 2025-11-28 — Inventors: Guo Shun, Ma Lixue, Bai Zhangjun, Wu Xiaolong, Cheng Yuewei, Liang Hongyuan, Zheng Jinfeng, Wang Duomin, Zheng Wenlong, Li Yanqin
Method and device for automatic loading and rubber-sleeve preforming of rare and refractory metal powder — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202511208424.1 — 2025-08-27 — Publication/announcement no. CN121042540A — Publication/announcement date 2025-12-02 — Inventors: Li Fucheng, Xie Yongxu, Tong Zekun, Cui Yang, Li Gang, Li Zhengguo
Nb-w tungsten alloy ingot and preparation method thereof — Invention patent — Published, CN202511151511.8 — 2025-08-18 — Publication/announcement no. CN120666226A — Publication/announcement date 2025-09-19 — Inventors: Liang Bin, Bai Zhangjun, Chen Fei, Liu Yi, Jin Guixia, Fang Huiliang
Preparation method for large-size high-purity superconducting niobium ingots — Invention patent — Published, CN202511101832.7 — 2025-08-07 — Publication/announcement no. CN121023279A — Publication/announcement date 2025-11-28 — Inventors: Fang Huiliang, Bai Zhangjun, Chen Fei, Liang Bin, Wu Xiaolong, Liu Chuang, Liu Yi, Lin Junjun, Xu Qiang, Yang Zhiguo
Gradient oxidation preparation method of tantalum capacitor dielectric layer and its oxide film and anode block — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202511102512.3 — 2025-08-07 — Publication/announcement no. CN121260674A — Publication/announcement date 2026-01-02 — Inventors: Li Zhongxiang, Zhang Jiankang, Chen Xueqing, Zhang Honggang, Qin Yuanyuan, Shi Dejun
Green, efficient counter-current washing and fluorine removal method for niobium hydroxide — Invention patent — Published, CN202511040848.1 — 2025-07-28 — Publication/announcement no. CN120774464A — Publication/announcement date 2025-10-14 — Inventors: Le Jianfeng, Li Hui, Zhang Weineng, Guo Tao, Lei Xin, Yin Huaichao, Zhao Chenyu, Zhan Zongyao
Machining method for niobium-tungsten alloy forgings — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202511012448.X — 2025-07-22 — Publication/announcement no. CN120734239A — Publication/announcement date 2025-10-03 — Inventors: Sun Wei, Xie Xinpu, Li Zhaobo, Su Kangning, Zhang JiaqI, Wu Yijun, Guo Congxi, Zhang Jiuhei, Li Jinh
Niobium alloy material and preparation method — Invention patent — Granted, CN202511008741.9 — 2025-07-22 — Publication/announcement no. CN120666225B — Publication/announcement date 2026-07-31 — Inventors: Bai Zhangjun, Liang Bin, Chen Fei, Fang Huiliang, Huang Yunhong, Liu Chuang
Multi-arc ion coating auxiliary tooling and multi-arc ion coating equipment — Utility model patent — Granted, CN202521526737.7 — 2025-07-21 — Publication/announcement no. CN224243188U — Publication/announcement date 2026-05-15 — Inventors: Tian Shanhe, Zhao Gang, Wang Lafei, Wen Kai, Bai Xiaodong, Wang Rong
Safety decomposition method for niobium-tantalum-iron alloy — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202510995059.7 — 2025-07-18 — Publication/announcement no. CN120796745A — Publication/announcement date 2025-10-17 — Inventors: Liu Chengyi, Lei Xin, Le Jianfeng, Zhang Haoran, Zhou Zongrong
Detection method for impurity elements in tantalum pentoxide — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202510934424.3 — 2025-07-08 — Publication/announcement no. CN120741437A — Publication/announcement date 2025-10-03 — Inventors: Zhou Meiling, Xu Ninghui, Hao Wenting, Zhang Junfeng, Li Yaqin, Yin JI, Zhang Qianqian
Medium-temperature forging method in large-size niobium-tungsten alloy and product thereof — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202510886412.8 — 2025-06-30 — Publication/announcement no. CN120619229A — Publication/announcement date 2025-09-12 — Inventors: Sun Wei, Li Zhaobo, Xie Xinpu, Su Kangning, Zhang JiaqI, Li Jinh
Niobium rods for Nb3Sn superconducting wire and preparation method thereof — Invention patent — Application withdrawn after publication; Substantive examination in progress and granted, CN202510898781.9 — 2025-06-30 — Publication/announcement no. CN120700424A — Publication/announcement date 2025-09-26 — Inventors: Xie Xinpu, Li Zhaobo, Sun Wei, Zhang Jiuhei, Yan Yong, Su Kangning, Ren XiaO, Wu Yijun, Fang Fang
Method for preparing metallic tantalum by calciothermic reduction — Invention patent — Published, CN202510886042.8 — 2025-06-30 — Publication/announcement no. CN120776144A — Publication/announcement date 2025-10-14 — Inventors: Yang Zhiguo, Bai Zhangjun, Chen Fei, Liang Bin, Ma Lixue
Niobium plate forging method — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202510870691.9 — 2025-06-26 — Publication/announcement no. CN120901197A — Publication/announcement date 2025-11-07 — Inventors: Zhang Jiuhei, Li Zhaobo, Wang Kai, Yan Yong, Su Kangning, Liu Shuqi, Fang Fang
End-face turning method for Nb521 alloy products — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202510851015.7 — 2025-06-24 — Publication/announcement no. CN120421544A — Publication/announcement date 2025-08-05 — Inventors: Wang Chong, Li Gang, Zhao Gang, Li Xiangyuan, Zhang Jinting, Su Rui, Yang Zhe, Cui Jian
Preparation method of ethanol tantalum — Invention patent — Substantive examination in progress and granted for publication/announcement, CN202510853476.8 — 2025-06-24 — Publication/announcement no. CN120864955A — Publication/announcement date 2025-10-31 — Inventors: Yu Wenbin, Zhang Weineng, Zhou Zongrong, Ma Yingli, Li Hui, Guo Tao, Le Jianfeng
Multi-modular niobium-zircon ingot forging mold — Utility model patent — Granted, CN202521298657.0 — 2025-06-23 — Publication/announcement no. CN224359313U — Publication/announcement date 2026-06-16 — Inventors: Liu Zhenan, Cao Dong, Hao Zhenhua, Ma Haibin
Preparation method for niobium-tungsten alloy — Invention patent — Granted, CN202510840690.X — 2025-06-23 — Publication/announcement no. CN120464893B — Publication/announcement date 2026-08-04 — Inventors: Liu Chuang, Bai Zhangjun, Chen Fei, Liang Bin, Ma Lixue, Liu Yi, Huang Yunhong, Fang Huiliang
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