5 results about "Germanium chloride" patented technology

The invention relates to a method for synchronously recovering germanium tetrachloride from a metal-state regenerated germanium raw material through oxychlorination, and belongs to the technical field of germanium extraction metallurgy. The method comprises the following steps: mixing a metal-state regenerated germanium raw material with hydrochloric acid in a chlorination distillation kettle, dropwise adding a hydrogen peroxide solution in sections to react with hydrochloric acid to generate a high-activity chlorine species, and directly oxidizing and chlorinating metal germanium to generate germanium tetrachloride. In the process, the reaction is a strong exothermic reaction, a product is distilled out by using heat released by the reaction, and the reaction temperature is controlled at 82-84 DEG C through a cooling medium. And after the reaction is basically completed, carrying out deep distillation through a heating medium, and finally condensing and collecting to obtain a germanium tetrachloride product. According to the method, a traditional multi-step process is integrated into one step, the process is short, alkali liquor does not need to be added, reaction heat is fully utilized, the energy-saving effect is remarkable, the germanium direct recovery rate is high, and the problems that a traditional method is long in process, high in energy consumption, large in auxiliary material consumption and low in direct recovery rate are effectively solved.

This invention discloses a method for recovering germanium and hydrochloric acid from germanium tetrachloride hydrolysis mother liquor, comprising the following steps: (1) Acidification: sulfuric acid is added to the hydrolysis mother liquor to increase its acidity, which is beneficial for the distillation of germanium tetrachloride; (2) Distillation: a negative pressure segmented distillation technique is adopted, with an operating pressure of -0.007 to -0.06 MPa and a time of 7 to 8 hours. Since the boiling point of germanium tetrachloride is 83.1℃ and the boiling point of hydrochloric acid is higher, germanium tetrachloride is preferentially distilled out during the distillation process, followed by concentrated hydrochloric acid, and finally dilute hydrochloric acid; (3) Wastewater treatment: the dilute hydrochloric acid is discharged into a wastewater treatment plant for wastewater treatment. This method for recovering germanium and hydrochloric acid from germanium tetrachloride hydrolysis mother liquor has high purity of distilled germanium tetrachloride and a comprehensive recovery rate of germanium greater than 99.5%. The entire process is simple to operate, requires less equipment investment, has low energy consumption, and causes less environmental pollution, making it suitable for large-scale production.

The invention relates to the technical field of metallurgy, in particular to a method for recovering zinc and germanium from germanium-containing zinc concentrate. The specific technical scheme is as follows: after pulpifying and grinding the zinc concentrate, directly carrying out leaching reaction under the conditions of high temperature and high pressure, carrying out settling separation on the reacted slurry, adding zinc and germanium in supernate, adding zinc oxide powder into the supernate for neutralization reaction, filtering to obtain neutralization liquid, adding zinc powder into the neutralization liquid for replacing germanium, and finally adding the zinc powder into the neutralization liquid for replacing germanium. And filtering to obtain germanium precipitation slag and a solution containing zinc and iron. Drying the germanium precipitation slag, performing chlorination distillation treatment to obtain germanium tetrachloride, and performing hydrolysis, filtration, drying and hydrogen high-temperature reduction on the germanium tetrachloride to obtain a metal germanium ingot; the zinc and iron-containing solution is subjected to iron removal, zinc powder replacement, electrolysis and casting to obtain a zinc ingot. According to the method, zinc and scattered metal can be directly leached into the solution to the maximum extent through oxygen pressure leaching, the leaching rate of zinc and germanium is high, the germanium recovery process of the whole process is short, and the recovery rate is high.

To provide a rutile-type germanium dioxide free-standing substrate and a method for producing the same, a rutile-type germanium dioxide template and a method for producing the same, a rutile-type germanium dioxide device wafer and a method for producing the same, a method for producing a germanium tetrachloride gas which can grow a rutile-type germanium dioxide crystal, a method for producing a rutile-type germanium dioxide monocrystal which can grow a rutile-type germanium dioxide crystal, and a device for producing a rutile-type germanium dioxide monocrystal which can grow a rutile-type germanium dioxide crystal.SOLUTION: A rutile-type germanium dioxide free-standing substrate comprises a rutile-type germanium dioxide monocrystal. In the germanium dioxide free-standing substrate, the planar density of macro defects appearing on the surface is 5000 / cm2 or less in at least a part of the plane.SELECTED DRAWING: None

The invention provides a germanium tetrachloride hydrolysis-germanium dioxide drying and calcining integrated device, and relates to germanium tetrachloride, the germanium tetrachloride hydrolysis-germanium dioxide drying and calcining integrated device comprises a hydrolysis reaction part, a sedimentation washing part and a drying and calcining part, and the hydrolysis reaction part, the sedimentation washing part and the drying and calcining part are sequentially connected from top to bottom to jointly form an integrated tower body; a mixing reaction cavity is formed in the hydrolysis reaction part, the top of the hydrolysis reaction part is connected with a gas input pipe and a liquid input pipe, and a stirring and mixing unit is arranged below the gas input pipe and the liquid input pipe. The core of the hydrolysis reaction part is provided with a composite stirring and mixing unit comprising a turbulent flow filter screen cylinder, a hollow self-suction turbine stirring piece and an outer turbulent flow stirring piece. In the working process, the hollow self-suction type turbine stirring piece rotates at a high speed, liquid can be sheared violently, germanium tetrachloride liquid can be sucked from the position above the liquid level and dispersed into fine bubbles, and the contact area of the gas phase and the liquid phase is greatly increased.