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A platform for research: civil engineering, architecture and urbanism
Method for preparing Sialon material from industrial waste residues
The invention relates to a method for preparing a Sialon material from industrial waste residues, which is characterized in that the Sialon material is prepared by taking industrial silicon slag, aluminum ash and industrial silicon as raw materials, and comprises the following steps of: firstly, adding the three raw materials into a ball mill according to a certain proportion, carrying out ball milling, drying slurry, pressing into tablets, putting the tablets into a corundum crucible, covering by using 50% of silicon nitride and 50% of boron nitride, putting into a graphite resistance furnace, and carrying out heat preservation for 2-3 hours; nitrogen is introduced as a protective gas in the sintering process, and nitridation sintering is performed at a high temperature to obtain the Sialon material. In the whole process, simple substance silicon and simple substance aluminum which are difficult to recycle in the industrial silicon slag and the aluminum ash are effectively utilized as reducing agents, the adding amount of the industrial silicon is reduced, the production cost is reduced, waste is turned into wealth, and high-value utilization of waste slag resources is achieved.
一种工业废渣制备Sialon材料的方法，本发明以工业硅渣、铝灰、工业硅为原料制备Sialon材料，首先按一定比例在球磨机中加入三种原料进行球磨，料浆干燥后压制成片，压片放入刚玉坩埚中，以50％氮化硅+50％氮化硼埋粉埋盖，置于石墨电阻炉中，烧结过程中通入氮气为保护气，在高温时进行氮化烧结得到Sialon材料。整个流程有效利用了工业硅渣及铝灰中难以回收的单质硅、单质铝为还原剂，减少了工业硅的加入量，降低了生产成本，变废为宝，实现废渣资源的高值化利用。
Method for preparing Sialon material from industrial waste residues
The invention relates to a method for preparing a Sialon material from industrial waste residues, which is characterized in that the Sialon material is prepared by taking industrial silicon slag, aluminum ash and industrial silicon as raw materials, and comprises the following steps of: firstly, adding the three raw materials into a ball mill according to a certain proportion, carrying out ball milling, drying slurry, pressing into tablets, putting the tablets into a corundum crucible, covering by using 50% of silicon nitride and 50% of boron nitride, putting into a graphite resistance furnace, and carrying out heat preservation for 2-3 hours; nitrogen is introduced as a protective gas in the sintering process, and nitridation sintering is performed at a high temperature to obtain the Sialon material. In the whole process, simple substance silicon and simple substance aluminum which are difficult to recycle in the industrial silicon slag and the aluminum ash are effectively utilized as reducing agents, the adding amount of the industrial silicon is reduced, the production cost is reduced, waste is turned into wealth, and high-value utilization of waste slag resources is achieved.
一种工业废渣制备Sialon材料的方法，本发明以工业硅渣、铝灰、工业硅为原料制备Sialon材料，首先按一定比例在球磨机中加入三种原料进行球磨，料浆干燥后压制成片，压片放入刚玉坩埚中，以50％氮化硅+50％氮化硼埋粉埋盖，置于石墨电阻炉中，烧结过程中通入氮气为保护气，在高温时进行氮化烧结得到Sialon材料。整个流程有效利用了工业硅渣及铝灰中难以回收的单质硅、单质铝为还原剂，减少了工业硅的加入量，降低了生产成本，变废为宝，实现废渣资源的高值化利用。
Method for preparing Sialon material from industrial waste residues
一种工业废渣制备Sialon材料的方法
LUO WENBO (author) / LONG XIAO (author) / CHEN FALOU (author) / LYU JUN (author) / XU XIANGJUN (author) / ZHENG XIAONING (author) / LONG SHAOLEI (author) / ZHOU DONGBO (author)
2022-05-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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