Patent Abstract
Belonging to the technical field of element content detection, this invention provides a testing procedure for fluorine inside tantalum-niobium materials:
Prepare lanthanum-alizarin complexone reagent;
Subject tantalum-niobium samples to high-temperature hydrolysis under three-stage gradient temperature control for full release of fluorine in all chemical forms;
Capture released fluorine with ternary composite alkaline absorbent, develop color with lanthanum-alizarin complexone reagent and measure absorbance;
Perform color-development and absorbance measurement with fluorine standard solution to establish the standard working curve;
Calculate fluorine content in tantalum-niobium samples by comparing sample absorbance against the standard curve.
This invention improves release efficiency of all-form fluorine and greatly enhances testing accuracy of fluorine content in tantalum-niobium materials.
Corporate R&D & Patent Profile
Since the start of 2026, Orient Tantalum Industry has been granted 26 new patents, rising by 271.43% year-on-year. Per the 2025 annual report, the company's R&D expenditure reached RMB 25.0314 million, a year-on-year decrease of 3.64%.
Big-data statistics from Tianyancha show Ningxia Orient Tantalum Industry Co., Ltd. has invested in 13 enterprises and participated in 2,363 bidding projects. The company owns 34 trademarks, 384 patents, 15 software copyrights and holds 198 administrative licenses.
Disclaimer: This article is compiled from public information for industry reference only and does not constitute investment advice.
Foreign-Trade Keywords
Tantalum niobium material, fluorine element detection, spectrophotometric method, Orient Tantalum Industry, refractory metal testing, invention patent, rare-metal analytical technology
