Method for preparing zirconium oxide powder by hydrothermal method using solid waste zirconium as raw material

Abstract

The invention belongs to the technical field of chemical material preparation, and particularly relates to a method for preparing zirconium oxide powder by a hydrothermal method using solid waste zirconium as a raw material. The method comprises the steps that, the solid waste zirconium is alkalized through an alkalization reaction to obtain an alkalized material, the alkalized material is firstlytransformed, then reacted with sulfuric acid to obtain basic zirconium sulfate, and the basic zirconium sulfate is further reacted with sulfuric acid to obtain zirconium sulfate, a zirconium sulfatesolution is prepared from the zirconium sulfate, and zirconium oxide powder is obtained through a hydrothermal reaction. Through a two-step acidification reaction, purity of the zirconium sulfate is higher, the next hydrothermal reaction is benefited, and content of the zirconium oxide in the zirconium oxide powder is increased. According to the method for preparing the zirconium oxide powder by the hydrothermal method using the solid waste zirconium as the raw material, the zirconium oxide powder has small particle size, high purity, good dispersibility, high crystallinity, mild hydrothermalsynthesis conditions and simple process, a problem of disposal of the solid waste zirconium is avoided, and recycling use of the solid waste zirconium is realized.

Description

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AI Technical Summary

Benefits of technology

The technical effect described this patented method allows for efficient conversion of industrial scrap containing metals like iron (Fe) from their original forms during manufacturing processes without generating harmful substances or polluting them downstream. It involves treating these materials before converting them back into useful products such as ceramics that are more environmentally friendly than existing methods due to its ability to reuse resources instead of discarding them afterwards.

Problems solved by technology

Technological Problem: Current Solid Oxygen Ceramic (ZrO2) materials suffer from various issues including contaminants generated during fabricating processes, difficulty in separating them without harmful effects caused by residual metathetic elements contained within these materials themselves. Existing solutions involve expensive raw materials and complicated procedures involving multiple steps, resulting in poor quality productivity and potential health hazards associated with disposable sources of zircarbon ceramiles.

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