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发明公开
CN102417361A 一种非均质结构的Cr2O3-Al2O3耐火材料 有权

一种非均质结构的Cr2O3-Al2O3耐火材料
摘要：
本发明属于耐火材料领域，一种非均质结构的Cr2O3-Al2O3耐火材料，骨料是由Cr2O3含量30%~50%粗颗粒，Cr2O3含量40%~60%中颗粒，Cr2O3含量50%~70%细颗粒构成；基质是由Cr2O3含量80%~95%、粒度为0.043mm~0.15mm的Cr2O3-Al2O3细粉，Cr2O3≥99%、粒度为0.03mm~0.15mm的氧化铬绿细粉，Al2O3≥99%、粒度D50为1μm~10μm的氧化铝微粉构成。本发明可有效提高Cr2O3资源的利用效率，降低耐火材料的成本，同时降低含铬材料对环境的危害。
摘要（英）：

The invention belongs to the field of the refractory material. The aggregate of the Cr2O3-Al2O3 refractory material of an anisotropic structure is composed of coarse particles, medium particles and fine particles, wherein the Cr2O3 content in the coarse particles is 30-50%, the Cr2O3 content in the medium particles is 40-60%, and the Cr2O3 content in the fine particle is 50-70%; a matrix is composed of Cr2O3-Al2O3 fine powder, chromium oxide green fine powder and alumina micro-powder, wherein the Cr2O3 content in the Cr2O3-Al2O3 fine powder is 80-95%, and the granularity of the Cr2O3-Al2O3 fine powder is 0.043-0.15mm; the Cr2O3 content in the chromium oxide green fine powder is more than or equal to 99%, and the granularity of the chromium oxide green fine powder is 0.03-0.15mm; and the Al2O3 content in the alumina micro-powder is more than or equal to 99%, and the granularity D50 of the alumina micro-powder is 1-10mu mm. According to the Cr2O3-Al2O3 refractory material of an anisotropic structure, the utilization ratio of the Cr2O3 resource can be effectively improved, the cost of the refractory material is lowered, and harm on the environment by a chromium-contained material is lightened.

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