Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fast-dry type high-performance corundum-mullite wear-resisting refractory castable and preparation method thereof
The invention discloses a fast-dry type high-performance corundum-mullite wear-resisting refractory castable which comprises 62-65% of aggregate, 30-35% of co-grinding fine powder, and 3-6% of a bonding agent, wherein the aggregate comprises the following raw materials in percentage by weight: 90% of sintered corundum, and 10% of mullite clinker; the co-grinding fine powder comprises the following raw materials in percentage by weight: 30-40% of sintered corundum, 54-65% of mullite clinker, and 5-6% of composite additives. The invention further discloses a preparation method of the castable. The preparation method comprises the following steps: 1) preparing the bonding agent; 2) preparing the aggregate: crushing the sintered corundum and the mullite clinker into the aggregate of which the grain diameter is 3-5mm; 3) preparing the co-grinding fine powder: adding 30-40% of sintered corundum, 54-65% of mullite clinker and 5-6% of composite additives into a ball grinding mill, and grinding the sintered corundum, the mullite clinker and composite additives so as to obtain the co-grinding fine powder; (4) uniformly mixing 62-65% of aggregate, 30-35% of co-grinding fine powder, and 3-6% of the bonding agent so as to obtain the castable, and finally performing sealed packaging. The castable disclosed by the invention is high in thermal shock resistance, erosive-wear resistance under moderate temperature, and thermal conductivity. The preparation method is simple in technology, low in production cost, and simple to operate.
Fast-dry type high-performance corundum-mullite wear-resisting refractory castable and preparation method thereof
The invention discloses a fast-dry type high-performance corundum-mullite wear-resisting refractory castable which comprises 62-65% of aggregate, 30-35% of co-grinding fine powder, and 3-6% of a bonding agent, wherein the aggregate comprises the following raw materials in percentage by weight: 90% of sintered corundum, and 10% of mullite clinker; the co-grinding fine powder comprises the following raw materials in percentage by weight: 30-40% of sintered corundum, 54-65% of mullite clinker, and 5-6% of composite additives. The invention further discloses a preparation method of the castable. The preparation method comprises the following steps: 1) preparing the bonding agent; 2) preparing the aggregate: crushing the sintered corundum and the mullite clinker into the aggregate of which the grain diameter is 3-5mm; 3) preparing the co-grinding fine powder: adding 30-40% of sintered corundum, 54-65% of mullite clinker and 5-6% of composite additives into a ball grinding mill, and grinding the sintered corundum, the mullite clinker and composite additives so as to obtain the co-grinding fine powder; (4) uniformly mixing 62-65% of aggregate, 30-35% of co-grinding fine powder, and 3-6% of the bonding agent so as to obtain the castable, and finally performing sealed packaging. The castable disclosed by the invention is high in thermal shock resistance, erosive-wear resistance under moderate temperature, and thermal conductivity. The preparation method is simple in technology, low in production cost, and simple to operate.
Fast-dry type high-performance corundum-mullite wear-resisting refractory castable and preparation method thereof
ZHOU ZHIQIANG (Autor:in) / WU XIPEI (Autor:in)
26.08.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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