A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for preparing high-purity quartz sand by using waste quartz crucible, high-temperature furnace, method for preparing high-purity quartz sand and high-purity quartz sand
The invention relates to a method for preparing high-purity quartz sand by using a waste quartz crucible, a high-temperature furnace, a method for preparing high-purity quartz sand and high-purity quartz sand, and the method comprises the following steps: pretreating the waste quartz crucible to obtain pretreated quartz sand; enabling the pretreated quartz sand to be in contact with chlorination gas in a high-temperature furnace, and carrying out chlorination treatment to obtain chlorinated quartz sand; carrying out first heating treatment on the chlorinated quartz sand in the high-temperature furnace in an inert treatment atmosphere, and controlling the pressure in the high-temperature furnace to be first in-furnace pressure; then carrying out second heating treatment, and controlling the pressure in the high-temperature furnace to be second furnace pressure, so as to obtain quartz sand subjected to dehydroxylation and bubble removal treatment; the temperature of the first heating ranges from 700 DEG C to 1200 DEG C, and the pressure ranges from 0.01 Kpa to 1 Kpa; the temperature of the second heating is 800-1300 DEG C, and the vacuum degree of the pressure in the second furnace is 10-80 KPa. The method disclosed by the invention can simultaneously solve the problems of high impurity content, high hydroxyl content and many bubbles in the waste crucible.
本公开涉及一种用废石英坩埚制备高纯石英砂的方法、高温炉及制备高纯石英砂的方法和高纯石英砂，该方法包括：将废石英坩埚经过预处理，得到预处理后的石英砂；使所述预处理后的石英砂在高温炉内与氯化气接触，进行氯化处理，得到氯化处理后的石英砂；在惰性处理气氛下，使所述氯化处理后的石英砂在所述高温炉内进行第一加热处理，控制所述高温炉内的压力为第一炉内压力；随后再进行第二加热处理，控制所述高温炉内的压力为第二炉内压力，得到脱羟和去气泡处理后的石英砂；所述第一加热的温度为700～1200℃，压力为0.01～1Kpa；所述第二加热的温度为800～1300℃，所述第二炉内压力的真空度为10～80KPa。本公开的方法能同时解决废坩埚中杂质含量高、羟基含量高以及气泡多的问题。
Method for preparing high-purity quartz sand by using waste quartz crucible, high-temperature furnace, method for preparing high-purity quartz sand and high-purity quartz sand
The invention relates to a method for preparing high-purity quartz sand by using a waste quartz crucible, a high-temperature furnace, a method for preparing high-purity quartz sand and high-purity quartz sand, and the method comprises the following steps: pretreating the waste quartz crucible to obtain pretreated quartz sand; enabling the pretreated quartz sand to be in contact with chlorination gas in a high-temperature furnace, and carrying out chlorination treatment to obtain chlorinated quartz sand; carrying out first heating treatment on the chlorinated quartz sand in the high-temperature furnace in an inert treatment atmosphere, and controlling the pressure in the high-temperature furnace to be first in-furnace pressure; then carrying out second heating treatment, and controlling the pressure in the high-temperature furnace to be second furnace pressure, so as to obtain quartz sand subjected to dehydroxylation and bubble removal treatment; the temperature of the first heating ranges from 700 DEG C to 1200 DEG C, and the pressure ranges from 0.01 Kpa to 1 Kpa; the temperature of the second heating is 800-1300 DEG C, and the vacuum degree of the pressure in the second furnace is 10-80 KPa. The method disclosed by the invention can simultaneously solve the problems of high impurity content, high hydroxyl content and many bubbles in the waste crucible.
本公开涉及一种用废石英坩埚制备高纯石英砂的方法、高温炉及制备高纯石英砂的方法和高纯石英砂，该方法包括：将废石英坩埚经过预处理，得到预处理后的石英砂；使所述预处理后的石英砂在高温炉内与氯化气接触，进行氯化处理，得到氯化处理后的石英砂；在惰性处理气氛下，使所述氯化处理后的石英砂在所述高温炉内进行第一加热处理，控制所述高温炉内的压力为第一炉内压力；随后再进行第二加热处理，控制所述高温炉内的压力为第二炉内压力，得到脱羟和去气泡处理后的石英砂；所述第一加热的温度为700～1200℃，压力为0.01～1Kpa；所述第二加热的温度为800～1300℃，所述第二炉内压力的真空度为10～80KPa。本公开的方法能同时解决废坩埚中杂质含量高、羟基含量高以及气泡多的问题。
Method for preparing high-purity quartz sand by using waste quartz crucible, high-temperature furnace, method for preparing high-purity quartz sand and high-purity quartz sand
用废石英坩埚制备高纯石英砂的方法、高温炉及制备高纯石英砂的方法和高纯石英砂
REN WEIKANG (author) / LI QIAO (author) / DENG HAO (author) / LIU YANG (author) / CHEN YONGKANG (author)
2024-05-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C03B
Herstellung oder Formgebung von Glas, Mineral- oder Schlackenwolle
,
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
/
C03C
Chemische Zusammensetzungen für Gläser, Glasuren oder Emails
,
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
/
F27B
Industrieöfen, Schachtöfen, Brennöfen, Retorten allgemein
,
FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
| European Patent Office | 2024
Preparation method of dense quartz crucible high-purity coating
| European Patent Office | 2020
Preparation method of ultrahigh-purity quartz ceramic crucible
| European Patent Office | 2015
High-purity fused quartz ceramic roller sintering method
| European Patent Office | 2023
Manufacturing method of high-purity quartz ceramic slurry
| European Patent Office | 2015