年产22万吨镁砖生产车间设计.doc

年产2.2万吨镁砖生产车间设计 摘 要 关键词：Abstract In recent decades, with the high temperature metallurgical processes and technology to strengthen the rapid development of the refractories made increasingly stringent requirements, and the emergence of many new materials, new technologies the refractory material craft has got constant improvement, especially the magnesia basic refractory. Magnesia based refractories consist of MgO as the primary chemical constituent with the primary phases of periclase. At present, the main products of magnesia based refractories include normal magnesia brick, direct-bonding magnesia brick, magnesia-calcia brick, magnesia-silica brick, magnesia-alumina brick, magnesia-chrome brick and magnesia-carbon brick. In addition, there are other type of magnesia based refractories which are free of firing and various unshaped products. Normal magnesia brick is made from sintered magnesia and then fired at high temperatures, which contains about 91% MgO with the silicate as the bonding phases. Direct bonding magnesia brick contains more than 95% MgO, in which the grains is bonded together with each other by high temperature sintering. This work designs a plant for producing MZ-91 normal magnesia brick of 10000 tons per year and MZ-96 normal magnesia brick of 12000 tons per year. The application conditions and processing fundamentals for magnesia brick are reviewed. Requirements for raw materials, processing technique, process flow, balance calculation of raw-materials supply, selection of firing equipments and related calculation and the processing inspection system in the production sequence are clarified. Characteristic of this workshop design is elucidated. Keywords: Refractory; Magnesia brick; Productive technological process; Workshop design 摘 要 I Abstract II 1 绪 论 1 1.1 1 1.1.1 镁砖的发展历史 1 1.1.2 镁砖的应用 2 1.2 2 1.2.1 CaO和SiO2及CaO/SiO2比的影响 2 1.2.2 R2O3型氧化物的影响 3 1.3 4 1.3.1 耐火材料的性能要求 4 1.3.2 镁砖的技术指标 5 2 6 2.1 工艺的理论基础 6 2.1.1 泥料制备 7 2.1.2 成型 8 2.1.3 干燥 8