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摘 要
當(dāng)今社會(huì)，隨著我國(guó)的經(jīng)濟(jì)不斷地發(fā)展，鋼鐵行業(yè)也快速發(fā)展著，耐火行業(yè)在鋼鐵行業(yè)的發(fā)展中起著舉足輕重的作用，尤其是鎂質(zhì)耐火材料，鎂質(zhì)耐火材料是指以MgO為主成分,以方鎂石為主晶相的耐火材料。目前，鎂質(zhì)耐火材料的主要品種有普通鎂磚、直接結(jié)合鎂磚、鎂鈣磚、鎂硅磚、鎂鋁磚、鎂鉻磚以及鎂碳磚。另外，還有其他不經(jīng)燒結(jié)的不燒鎂質(zhì)制品和不定形鎂質(zhì)耐火材料。普通鎂磚是以燒結(jié)鎂石為原料，經(jīng)燒結(jié)制成，含MgO 91％左右，以硅酸鹽結(jié)合的鎂質(zhì)耐火制品。直接結(jié)合鎂磚是以高純燒結(jié)鎂砂為原料，經(jīng)燒結(jié)制成的，含MgO 95%以上，是方鎂石晶間直接結(jié)合的鎂質(zhì)耐火制品。本次設(shè)計(jì)是10000噸普通鎂磚MZ—91和12000噸普通鎂磚MZ—96的生產(chǎn)車間設(shè)計(jì)。設(shè)計(jì)敘述了鎂磚的使用條件及其生產(chǎn)工藝?yán)碚摶A(chǔ)，輔助原料的要求,加工處理方法,產(chǎn)品的生產(chǎn)工藝流程,物料平衡計(jì)算結(jié)果,生產(chǎn)設(shè)備的選型,燒成設(shè)備的選型計(jì)算以及生產(chǎn)技術(shù)檢查系統(tǒng)的說(shuō)明和設(shè)計(jì)的主要特點(diǎn)。
關(guān)鍵詞：耐火材料；鎂磚；生產(chǎn)工藝；車間設(shè)計(jì)
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