Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing aluminum oxide wear-resistant ceramic ball by taking bauxite as main raw material and product of aluminum oxide wear-resistant ceramic ball
The invention discloses a method for preparing an aluminum oxide wear-resistant ceramic ball by taking bauxite as a main raw material. The ceramic ball comprises the following raw materials in parts by weight: 65-85 parts of bauxite, 3-10 parts of active magnesium oxide, 5-10 parts of SiC, 10-15 parts of clay, 5-10 parts of alpha-Al2O3 powder, 0-3 parts of talc, 1-4 parts of heavy calcium powder and 2-5 parts of barite. The preparation method comprises the following steps: preparing the raw materials, ball-milling and mixing to obtain mixed slurry, performing spray granulation, isostatic pressing molding and drying, and firing by adopting a low-temperature slow firing-stepped cooling system to obtain the aluminum oxide wear-resistant ceramic ball. The bauxite is used as a matrix, SiC, active magnesium oxide and other materials are added, a reduction reaction is generated in the initial stage of sintering, meanwhile, the crystal form transformation process in the ceramic ball is changed, a magnesium-iron-aluminum spinel crystal phase with a stable structure is formed, and the purposes of improving the toughness of the ceramic ball and improving the appearance quality of the ceramic ball are achieved.
本发明公开了一种以铝矾土为主要原料制备氧化铝耐磨陶瓷球的方法，所述陶瓷球按重量份数原料组成为铝矾土65～85份、活性氧化镁3～10份、SiC5～10份、黏土10～15份、α‑Al2O3粉5～10份、滑石0～3份、重钙粉1～4份、重晶石2～5份；将所述原料组成配料、球磨混合后得到的混合浆料，经喷雾造粒、等静压压制成型、干燥后，采用低温慢烧‑阶梯式降温的制度进行烧成，即得到氧化铝耐磨陶瓷球。本发明以铝矾土为基体，加入SiC与活性氧化镁等材料，在烧结初期产生还原反应，同时改变陶瓷球中的晶型转变过程，形成结构稳定的镁铁铝尖晶石晶相，实现了提升陶瓷球韧性并改善陶瓷球外观品质的目的。
Method for preparing aluminum oxide wear-resistant ceramic ball by taking bauxite as main raw material and product of aluminum oxide wear-resistant ceramic ball
The invention discloses a method for preparing an aluminum oxide wear-resistant ceramic ball by taking bauxite as a main raw material. The ceramic ball comprises the following raw materials in parts by weight: 65-85 parts of bauxite, 3-10 parts of active magnesium oxide, 5-10 parts of SiC, 10-15 parts of clay, 5-10 parts of alpha-Al2O3 powder, 0-3 parts of talc, 1-4 parts of heavy calcium powder and 2-5 parts of barite. The preparation method comprises the following steps: preparing the raw materials, ball-milling and mixing to obtain mixed slurry, performing spray granulation, isostatic pressing molding and drying, and firing by adopting a low-temperature slow firing-stepped cooling system to obtain the aluminum oxide wear-resistant ceramic ball. The bauxite is used as a matrix, SiC, active magnesium oxide and other materials are added, a reduction reaction is generated in the initial stage of sintering, meanwhile, the crystal form transformation process in the ceramic ball is changed, a magnesium-iron-aluminum spinel crystal phase with a stable structure is formed, and the purposes of improving the toughness of the ceramic ball and improving the appearance quality of the ceramic ball are achieved.
本发明公开了一种以铝矾土为主要原料制备氧化铝耐磨陶瓷球的方法，所述陶瓷球按重量份数原料组成为铝矾土65～85份、活性氧化镁3～10份、SiC5～10份、黏土10～15份、α‑Al2O3粉5～10份、滑石0～3份、重钙粉1～4份、重晶石2～5份；将所述原料组成配料、球磨混合后得到的混合浆料，经喷雾造粒、等静压压制成型、干燥后，采用低温慢烧‑阶梯式降温的制度进行烧成，即得到氧化铝耐磨陶瓷球。本发明以铝矾土为基体，加入SiC与活性氧化镁等材料，在烧结初期产生还原反应，同时改变陶瓷球中的晶型转变过程，形成结构稳定的镁铁铝尖晶石晶相，实现了提升陶瓷球韧性并改善陶瓷球外观品质的目的。
Method for preparing aluminum oxide wear-resistant ceramic ball by taking bauxite as main raw material and product of aluminum oxide wear-resistant ceramic ball
一种以铝矾土为主要原料制备氧化铝耐磨陶瓷球的方法及其产品
YANG KE (Autor:in) / ZHA YUE (Autor:in) / CHANG QIBING (Autor:in) / LI KAIQIN (Autor:in) / YANG YULONG (Autor:in)
16.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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