Tungsten carbide/tungsten scraps can be extracted to “industrial teeth”

On May 11, the reporter learned from Xiamen Haishu Inspection and Quarantine Bureau that a batch of tungsten carbide scrap was imported from Haishu Port. This is the first batch of tungsten carbide scrap imported from Haishu Port this year. The total weight of the tungsten carbide scraps was 44.52 tons and the value of the product was 391,400 U.S. dollars, which was mainly used to recover tungsten.

To mention tungsten, the first thing that comes to mind is the filament. Tungsten is a rare high-melting metal, its melting point is the highest among all non-alloyed metals, and tungsten's electrical conductivity is also very strong. Therefore, tungsten was used by the great inventor Edison for the production of filaments. Tungsten is widely used in modern technology in the state of pure metal and in alloys. It is called "industrial tooth" and "industrial salt" and is an important strategic metal. However, according to the current consumption, tungsten mine is only enough for about 140 years. The recycling of tungsten can make up for the lack of tungsten storage. Recycling tungsten has good economic and environmental benefits. Tungsten carbide/tungsten scrap has a higher tungsten content than tungsten, particularly sintered tungsten carbide, where the tungsten content is often higher than 90%. By extracting tungsten from tungsten scraps such as tungsten carbide, compared to the extraction of tungsten, it not only saves the addition of auxiliary materials such as hydrochloric acid, but also reduces the generation of waste water, thereby reducing the production cost of the enterprise and the investment in waste water treatment and avoiding it. Pollution of the environment. The staff of Haishu Bureau conducted radioactivity inspection and inspection and quarantine on the tungsten carbide/tungsten waste scraps and found no substances that did not meet the requirements of environmental protection. A customs clearance slip was issued on the same day to ensure the rapid clearance of the tungsten carbide waste scraps. . In recent years, Xiamen Haishu Inspection and Quarantine Bureau has continuously optimized the customs clearance environment and improved the efficiency of customs clearance. It has taken the lead in nationwide implementation of the “supervisory mutual recognition” of imported waste raw materials, and the customs has recognized inspection, inspection and quarantine results and data for inspection and quarantine of imported waste raw materials. The goods that the quarantine department has inspected by inspection shall, in principle, no longer require secondary picking boxes, but shall directly approve the inspection results of the inspection and quarantine department. This not only reduces the operation of moving cabinets, picking boxes, and backfilling of goods at least once, but also increases the utilization rate of the site by one-third, and avoids the loss of goods, water, and sun exposure caused by repeated tanks.