Industry Background The Chinese standard YS/T 298-2024 “High-Titanium Slag” was officially released on October 24, 2024, and will come into force on May 1, 2025. The revision reflects the latest changes in China’s titanium industry, including shifts in resource availability, advances in production technology, and growing requirements for green and sustainable manufacturing.

1. High-Titanium Slag: A Strategic Resource in the Global Value Chain High-titanium slag is not a byproduct or waste; it is a premium titanium mineral enrichment achieved through sophisticated pyrometallurgical processes. As a high-concentration carrier of Titanium Dioxide (TiO₂), it serves as the essential feedstock for producing Titanium Tetrachloride (TiCl₄), high-end Titanium Dioxide pigments, and the strategic metal—Titanium Sponge. In an era of tightening environmental regulations and increasing resource efficiency, high-titanium slag has become a cornerstone of the global supply chain, offering low emission profiles, high resource utilization, and superior end-product quality.

In the modern industrial ecosystem, High-Titanium Slag (High-Ti Slag) is far more than a mere intermediate product; it serves as a critical bridge connecting raw mineral extraction with high-end precision manufacturing. Produced through the electric furnace smelting of titanium concentrates, high-titanium slag typically features a TiO₂ (Titanium Dioxide) concentration ranging from 74% to 90%. This article provides a professional analysis of the multifaceted roles of high-titanium slag and its indispensable value in resource circulation and technological evolution.

High-Titanium Slag: A Cornerstone Material in the Titanium Industry Within the broader landscape of the titanium industry, high-titanium slag stands out as a critical cornerstone material. It underpins the production of key downstream products such as titanium dioxide pigments and sponge titanium, playing an indispensable role in the stability and development of the entire titanium value chain. High-titanium slag is a titanium-rich material produced through physical and metallurgical processing of titanium ores. Its industrial production is primarily based on electric furnace smelting. In this process, titanium concentrate is mixed with solid reducing agents and charged into an electric furnace for reduction smelting. Iron oxides in the ore are selectively reduced to metallic iron, while titanium oxides are concentrated in the slag phase. After slag–metal separation, high-titanium slag is obtained along with by-product iron. Importantly, high-titanium slag is neither waste nor a secondary by-product. It is a valuable raw material used directly in the production of titanium dioxide and sponge titanium. Based on titanium dioxide (TiO₂) content, high-titanium slag is classified into different grades. Slag with a TiO₂ content above 90% is typically suitable for the chloride process of titanium dioxide production, while material with lower TiO₂ content is commonly used in the sulfate process.