Method for recovering germanium from copper-lead-zinc-arsenic-germanium materials

Abstract

The invention discloses a method for recovering germanium from a copper-lead-zinc-arsenic-germanium material. The method specifically comprises the following steps of 1, crushing the copper-lead-zinc-arsenic-germanium materials, adding an oxidizing agent, and uniformly mixing to obtain a mixture; 2, carrying out oxidation treatment on the mixture obtained in the step 1; 3, crushing the metal oxide obtained in the step 3; 4, mixing the crushed metal oxide with hydrochloric acid, performing chlorination distillation, condensing and collecting to obtain germanium tetrachloride; and 5, hydrolyzing, washing, filtering and drying the germanium tetrachloride to obtain crude germanium dioxide. The production pollution is small, the arsenic hydride generation condition is destroyed, hydrogen and arsenic hydride gas do not exist, the harm is reduced, and during heating oxidation, four-section temperature rising type heating is adopted, so that elements in the materials are fully oxidized.

Description

technical field

[0001] The invention relates to the technical field of metallurgy, in particular to a method for recovering germanium from copper, lead, zinc, arsenic and germanium materials. Background technique

[0002] Germanium is an important scattered metal and the most important semiconductor material besides silicon. It has extensive and important applications in various fields such as infrared optics, optical fiber communication, aerospace, chemical catalysts, solar cells, and biomedicine. On the other hand, the resources of germanium in the world are relatively poor. The proven reserves of germanium metal in the world are about 8,600 tons, and the global reserves are only enough for 40 years. Now most developed countries are vigorously developing aerospace technology and new energy technology, and the sustainable development of these technologies is inseparable from germanium. As my country's economy continues to develop at a high speed, the level of science and t...

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