Method for recycling germanium in wiping auxiliary materials in germanium lens machining process

Abstract

The invention discloses a method for recycling germanium in wiping auxiliary materials in a germanium lens machining process, and relates to the technical field of germanium recycling. The method comprises the following steps that S1, deep soaking sedimentation is conducted, specifically, firstly, wiping auxiliary materials that heavily adsorb germanium powder and grinding polishing liquid can notbe used repeatedly are put into a soaking tank, clear water is added for soaking, and germanium-containing soaking liquid and drained wiping auxiliary materials are obtained; S2, the germanium-containing soak solution in thermal concentration equipment is subjected to thermal concentration to remove moisture, and germanium mud with the germanium content being 50% or above is obtained; and S3, thedrained wiping auxiliary materials fished out in the step S1 are dried through a drying box and fired through a high-temperature furnace, and the germanium mud with the germanium content being 30% orabove is obtained. According to the method provided by the invention, the wiping auxiliary material is put into the soaking tank to be repeatedly soaked, germanium powder attached to the wiping auxiliary material is thoroughly peeled off, then the soaking liquid is subjected to thermal concentration to remove moisture, the wiping auxiliary material is subjected to drying in the drying box and firing in the high-temperature furnace, and recovery of germanium in the wiping auxiliary material is achieved.

Description

technical field [0001] The invention belongs to the technical field of germanium recovery, in particular to a method for recovering germanium in wiping auxiliary materials during germanium lens processing. Background technique [0002] During the processing of germanium lenses, edging, milling, polishing and other processing procedures are required. Especially in the grinding and polishing process, the surface of the ground and polished parts needs to be cleaned many times. The cotton and dust-free cloth used in the cleaning process The germanium powder produced by grinding and polishing will be adsorbed on the wiping auxiliary materials such as dust-free paper. The germanium powder produced by grinding and polishing is very fine. In addition to the wetting of the grinding and polishing liquid, the germanium powder and auxiliary materials such as cotton will diffuse deeply. , causing certain difficulty in recycling. [0003] The existing technology is to directly clean the ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for recovering germanium in the wiping auxiliary materials in the germanium lens processing process, put the heavily adsorbed germanium powder and the grinding and polishing liquid into the soaking tank for the wiping auxiliary materials that cannot be used repeatedly, add clear water to soak repeatedly, Form a soaking solution and a wiping auxiliary material containing a certain amount of germanium powder. The soaking solution is heat-concentrated to remove moisture, and germanium mud containing more than 50% of germanium is obtained. After soaking, the wiping auxiliary material is dried in a drying oven and fired in a high-temperature furnace. The germanium mud containing more than 30% germanium is obtained, and the two kinds of germanium mud are mixed to form a germanium concentrate, which realizes the recovery of germanium in the wiping auxiliary material, and solves the problem of low recovery rate and consumption of germanium in the prior art for wiping auxiliary materials. The problem of many chemical reagents