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A platform for research: civil engineering, architecture and urbanism
High-value utilization method of waste quartz crucible
The invention provides a high-valued utilization method of a waste quartz crucible, which comprises the following steps: 1) stripping the waste quartz crucible to obtain a silicon nitride crude product and a crucible body; 2) carrying out silicon nitride-acid liquor washing treatment on the silicon nitride crude product to obtain a silicon nitride product and silicon nitride-washing waste liquor; 3) performing crucible-acid liquor washing treatment on the crucible body to obtain a purified crucible and crucible-washing waste liquor; and 4) carrying out purification treatment on the silicon nitride-washing waste liquid and the crucible-washing waste liquid to obtain recycled acid liquid, so that the waste quartz crucible can be utilized in a high-valued manner, the purified crucible body is separated out, and silicon nitride is recycled as a byproduct, thereby improving the economic value, purifying the waste liquid, and being green and environment-friendly in the recycling process.
本发明提供一种废石英坩埚的高值化利用方法，包括以下步骤：1)对废石英坩埚进行剥层处理，得到氮化硅粗品和坩埚本体；2)对氮化硅粗品进行氮化硅‑酸液洗涤处理，得到氮化硅产品和氮化硅‑洗涤废液；3)对坩埚本体进行坩埚‑酸液洗涤处理，得到净化坩埚和坩埚‑洗涤废液；4)对氮化硅‑洗涤废液和坩埚‑洗涤废液进行净化处理，得到回收酸液，能够将废石英坩埚高值化利用，分离出净化后的坩埚本体，同时回收氮化硅作为副产品，提高了经济价值，并且废液得到净化，回收过程绿色环保。
High-value utilization method of waste quartz crucible
The invention provides a high-valued utilization method of a waste quartz crucible, which comprises the following steps: 1) stripping the waste quartz crucible to obtain a silicon nitride crude product and a crucible body; 2) carrying out silicon nitride-acid liquor washing treatment on the silicon nitride crude product to obtain a silicon nitride product and silicon nitride-washing waste liquor; 3) performing crucible-acid liquor washing treatment on the crucible body to obtain a purified crucible and crucible-washing waste liquor; and 4) carrying out purification treatment on the silicon nitride-washing waste liquid and the crucible-washing waste liquid to obtain recycled acid liquid, so that the waste quartz crucible can be utilized in a high-valued manner, the purified crucible body is separated out, and silicon nitride is recycled as a byproduct, thereby improving the economic value, purifying the waste liquid, and being green and environment-friendly in the recycling process.
本发明提供一种废石英坩埚的高值化利用方法，包括以下步骤：1)对废石英坩埚进行剥层处理，得到氮化硅粗品和坩埚本体；2)对氮化硅粗品进行氮化硅‑酸液洗涤处理，得到氮化硅产品和氮化硅‑洗涤废液；3)对坩埚本体进行坩埚‑酸液洗涤处理，得到净化坩埚和坩埚‑洗涤废液；4)对氮化硅‑洗涤废液和坩埚‑洗涤废液进行净化处理，得到回收酸液，能够将废石英坩埚高值化利用，分离出净化后的坩埚本体，同时回收氮化硅作为副产品，提高了经济价值，并且废液得到净化，回收过程绿色环保。
High-value utilization method of waste quartz crucible
一种废石英坩埚的高值化利用方法
YANG ZHIGUO (author) / SHE HAOHAO (author) / NAN YANG (author) / LUO CAIPING (author) / CHEN WEIPING (author) / ZHANG RUIZHE (author) / GUO YAJIE (author) / HE XINPING (author) / XIONG CHAO (author)
2024-03-22
Patent
Electronic Resource
Chinese
IPC:
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C02F
Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm
,
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
/
C03B
Herstellung oder Formgebung von Glas, Mineral- oder Schlackenwolle
,
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
/
C04B
Kalk
,
LIME
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