Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Alloy graphite powder applied to reduction furnace preheater and reduction furnace preheater
The invention relates to alloy graphite powder applied to a reduction furnace preheater and the reduction furnace preheater, and belongs to the technical field of preheater preparation. The alloy graphite powder comprises the following raw materials: graphite powder, boron nitride and silicon powder, wherein the mass ratio of the graphite powder to the boron nitride to the silicon powder is 1: (0.001%-0.1%): (0.001%-0.1%); the graphite powder, boron nitride and silicon powder are mixed and then heated in a vacuum environment, and alloy graphite powder is obtained after heating is completed. Boron nitride and silicon powder are introduced into graphite powder, alloy graphite powder is formed through high-temperature firing, the obtained alloy graphite powder is subjected to a hot isostatic pressing forming process to obtain the preheater, the service life of the obtained preheater is longer than that of a preheater made of pure graphite, the number of cycles can reach 4-7 in the process of preparing multi-stage silicon in a reduction furnace, and the service life of the preheater is prolonged. The service life of the preheater is prolonged, and the production cost of polycrystalline silicon is greatly reduced.
本发明涉及一种应用于还原炉预热器的合金石墨粉末及还原炉预热器，属于预热器制备技术领域。所述合金石墨粉末包括以下原料：石墨粉体、氮化硼和硅粉，所述石墨粉体、氮化硼和硅粉的质量比为1:0.001％～0.1％:0.001～0.1％的质量；将石墨粉体、氮化硼和硅粉混合后，在真空环境下加热，加热完成得合金石墨粉末。本发明通过向石墨粉末中引入氮化硼和硅粉，经过高温烧制形成合金石墨粉，并将所得的合金石墨粉采用热等静压成型工艺获得预热器，所得预热器比纯石墨制成的预热器使用寿命更长，在还原炉制备多级硅过程中，可循环次数达4‑7次，延长了预热器的使用寿命，极大降低了多晶硅的生产成本。
Alloy graphite powder applied to reduction furnace preheater and reduction furnace preheater
The invention relates to alloy graphite powder applied to a reduction furnace preheater and the reduction furnace preheater, and belongs to the technical field of preheater preparation. The alloy graphite powder comprises the following raw materials: graphite powder, boron nitride and silicon powder, wherein the mass ratio of the graphite powder to the boron nitride to the silicon powder is 1: (0.001%-0.1%): (0.001%-0.1%); the graphite powder, boron nitride and silicon powder are mixed and then heated in a vacuum environment, and alloy graphite powder is obtained after heating is completed. Boron nitride and silicon powder are introduced into graphite powder, alloy graphite powder is formed through high-temperature firing, the obtained alloy graphite powder is subjected to a hot isostatic pressing forming process to obtain the preheater, the service life of the obtained preheater is longer than that of a preheater made of pure graphite, the number of cycles can reach 4-7 in the process of preparing multi-stage silicon in a reduction furnace, and the service life of the preheater is prolonged. The service life of the preheater is prolonged, and the production cost of polycrystalline silicon is greatly reduced.
本发明涉及一种应用于还原炉预热器的合金石墨粉末及还原炉预热器，属于预热器制备技术领域。所述合金石墨粉末包括以下原料：石墨粉体、氮化硼和硅粉，所述石墨粉体、氮化硼和硅粉的质量比为1:0.001％～0.1％:0.001～0.1％的质量；将石墨粉体、氮化硼和硅粉混合后，在真空环境下加热，加热完成得合金石墨粉末。本发明通过向石墨粉末中引入氮化硼和硅粉，经过高温烧制形成合金石墨粉，并将所得的合金石墨粉采用热等静压成型工艺获得预热器，所得预热器比纯石墨制成的预热器使用寿命更长，在还原炉制备多级硅过程中，可循环次数达4‑7次，延长了预热器的使用寿命，极大降低了多晶硅的生产成本。
Alloy graphite powder applied to reduction furnace preheater and reduction furnace preheater
一种应用于还原炉预热器的合金石墨粉末及还原炉预热器
QIN RONG (Autor:in) / ZHANG YONGLIANG (Autor:in) / YU CHAO (Autor:in) / LI HONGPAN (Autor:in) / ZHOU GUOFENG (Autor:in) / ZHANG WENYU (Autor:in) / CHENG JINYI (Autor:in) / LI HAIJUN (Autor:in) / CAO XIGAO (Autor:in) / ZHANG CAIGANG (Autor:in)
07.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
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
Preheater device and decomposing furnace system comprising same
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024