内容
Abstract
In this paper, the sulfidation precipitation method for the extraction of germanium from its raw ore was described. A germanium-bearing ore sample was pulverized and mixed with sulfur dioxide gas to form sulfuric acid. The acidified sample was filtered, and the precipitate that remained was heated until the sulfuric acid was completely vaporized, leaving behind a germanium-rich slurry. The slurry was further filtered and separated into a solid fraction and a liquid fraction. The liquid fraction was collected and further processed in order to form a germanium oxide material. This material was then separated into various grades according to its purity, which provided a versatile source of germanium for numerous applications.
Introduction
Germanium is an important metal ore widely used in numerous industrial applications, such as semiconductors, toners, phosphor coatings and glass products. However, in recent times, commercial demand for this metal has increased significantly, thus driving up the cost of traditional extractive methods such as mineral processing. In order to reduce costs and increase the efficiency of extraction, new methods have been developed. One example of such a method is the sulfidation precipitation method, which is a reliable and efficient method for extracting germanium from its raw ore.
Sulfidation Precipitation Method for Extraction of Germanium
The sulfidation precipitation method for the extraction of germanium involves pulverizing a sample of germanium-bearing ore and mixing it with sulfur dioxide gas to form sulfuric acid. The acidified sample is then filtered to remove impurities such as iron and silica, and the remaining solid particles are heated until all sulfuric acid is completely vaporized, leaving behind a germanium-rich slurry. This slurry is further filtered and separated into a solid fraction and a liquid fraction. The solid fraction is then heated until the germanium oxide material forms, while the liquid fraction is collected and further processed in order to form a germanium oxide material.
The sulfuric acid is removed by heating the ore sample in a muffle furnace at a temperature of between 600 – 900°C. This produces a filtered germanium-rich slurry containing various fractions such as silicates, metal oxides and sulfates. The slurry is then stored in an airtight container until ready for further processing.
The liquid phase is then separated from the solid phase using a combination of filter papers, centrifugation and decantation. The liquid phase contains the germanium oxide and other impurities present in the sample. This liquid phase is then separated into various grades of purity, in order to provide a versatile source of germanium for a number of different applications.
Conclusion
The sulfidation precipitation method for the extraction of germanium is an efficient, effective and cost-effective way to extract germanium from its raw ore. This method is simple, straightforward and can be easily implemented in factories and laboratories. Furthermore, the process produces a versatile source of germanium at different purity levels, making it suitable for a variety of uses.
