一种原生单晶金刚石粉的提纯方法

By using microwave-assisted ionic liquid method and ultrasonic-hydrogen peroxide composite oxidation treatment, combined with tea saponin and sodium lignin sulfonate, the problems of high waste liquid treatment cost and high environmental risk in the existing chemical diamond purification process have been solved, and efficient and environmentally friendly diamond purification has been achieved.

CN121342016BActive Publication Date: 2026-07-17HENAN WANMO DIAMOND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HENAN WANMO DIAMOND CO LTD
Filing Date
2025-12-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing chemical methods for purifying diamond generate large amounts of waste liquid, which poses problems such as high waste liquid treatment costs, significant environmental risks, and high energy consumption.

Method used

The method employs a combination of microwave-assisted ionic liquid method with ultrasonic and hydrogen peroxide composite oxidation treatment, using tea saponin and sodium lignin sulfonate as natural, biodegradable plant-based ingredients. This method removes impurities from diamonds through three-stage targeted treatment, avoiding the use of high temperatures and strong acids.

Benefits of technology

It significantly reduces the cost of impurity removal, reduces environmental risks, improves purification efficiency, maintains the integrity and high strength of diamond, and forms an efficient and environmentally friendly purification path.

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Abstract

本发明涉及一种原生单晶金刚石粉的提纯方法,包括以下步骤:(1)前处理阶段:将粗分后的金刚石颗粒进行预处理,采用质量百分比浓度30%盐酸溶液与质量百分比浓度50%硝酸溶液的混合酸,超声波处理,清洗;(2)采用微波辅助离子液体法,80‑120℃,处理60‑90min,然后固液分离,回收离子液;(3)对经上述处理的金刚石进行超声波‑过氧化氢复合氧化处理;(4)将对复合氧化处理的金刚石进行超纯水超声清洗,然后真空干燥。本发明将物理场、绿色化学和温和氧化技术有机结合,整个流程最高温度不超过120℃,从源头上杜绝了高温、强酸对金刚石表面造成的刻蚀、氧化和晶格损伤,有利于保持原生单晶的完整性和高强度,形成了一条高效、高质、环保的金刚石提纯新路径。
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