Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing fused mullite from bauxite under coal
The invention provides a method for preparing electro-fused mullite from bauxite under coal, which comprises the following steps: grading the bauxite under coal, and removing silt; obtaining + d-grade minerals, and carrying out iron removal and desulfurization on the + d-grade minerals by adopting an X-ray concentrating machine to obtain intermediate minerals; calcining the intermediate mineral to obtain bauxite clinker; the preparation method comprises the following steps: crushing bauxite clinker, adding auxiliary materials, and uniformly mixing to obtain a mixture; melting the mixture in an electric arc furnace at a high temperature, cooling and crystallizing, and then crushing, grading and deironing to obtain a mullite product. According to the method, the under-coal bauxite is adopted as the main raw material to produce the fused mullite, the content of mullite phases in the mullite product is 95% or above, the comprehensive utilization rate of under-coal aluminum resources and the added value of the product are increased, the channel of the mullite raw material is widened, and sustainable high-quality development of the refractory material industry is powerfully supported.
本发明提出了一种煤下铝土矿制备电熔莫来石的方法，所述方法包括以下步骤：对煤下铝土矿进行分级，剔除
Method for preparing fused mullite from bauxite under coal
The invention provides a method for preparing electro-fused mullite from bauxite under coal, which comprises the following steps: grading the bauxite under coal, and removing silt; obtaining + d-grade minerals, and carrying out iron removal and desulfurization on the + d-grade minerals by adopting an X-ray concentrating machine to obtain intermediate minerals; calcining the intermediate mineral to obtain bauxite clinker; the preparation method comprises the following steps: crushing bauxite clinker, adding auxiliary materials, and uniformly mixing to obtain a mixture; melting the mixture in an electric arc furnace at a high temperature, cooling and crystallizing, and then crushing, grading and deironing to obtain a mullite product. According to the method, the under-coal bauxite is adopted as the main raw material to produce the fused mullite, the content of mullite phases in the mullite product is 95% or above, the comprehensive utilization rate of under-coal aluminum resources and the added value of the product are increased, the channel of the mullite raw material is widened, and sustainable high-quality development of the refractory material industry is powerfully supported.
本发明提出了一种煤下铝土矿制备电熔莫来石的方法，所述方法包括以下步骤：对煤下铝土矿进行分级，剔除
Method for preparing fused mullite from bauxite under coal
一种煤下铝土矿制备电熔莫来石的方法
LYU ZIHU (Autor:in) / CHENG HONGWEI (Autor:in) / ZHAO DENGKUI (Autor:in) / WU DONGYIN (Autor:in)
10.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Method for preparing mullite-corundum composite ceramic from bauxite clinker waste
| Europäisches Patentamt | 2022
Synthesis of Mullite Using Low-Grade Bauxite and Coal Gangue
| British Library Online Contents | 2014
Method for preparing mullite multiphase ceramic by low-temperature sintering of bauxite tailings
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2023
Method for preparing and using fused quartz-mullite aluminum melting chute
| Europäisches Patentamt | 2024