各种氧化铝输送系统 控制概述 在电解铝厂生产过程中,氧化铝物料输送是一个极为重要的环节。尤其目前趋向于大型预焙槽发展,随着生产规模的不断扩大,氧化铝的物料输送技术及环节控制将直接影晌铝电解生产的稳定和氧化铝单耗。因此,控制系统的稳定可靠也显得更为重要。 目前氧化铝物料输送技术主要有稀相输送、浓相输送和超浓相输送三大技术类型。 稀相输送是氧化铝原料输送的传统方法,是采用仓式泵或罐车直接从贮仓将氧化铝物料送到净化系统的高位仓内。其在水平输送管内物料呈疏密不均的流动状态,易形成停滞流,水平管越长,这一 Various alumina transport system control Overview In the aluminum production process, the alumina material transport is an extremely important part. In particular, the development of large prebaked troughs is becoming more and more popular at present. With the continuous expansion of production scale, the material handling technology and control of alumina will directly affect the stability of aluminum electrolysis and alumina consumption. Therefore, the stability of the control system is also more important. At present, the alumina material delivery technology mainly has three technical types, dilute phase transport, dense phase transport and ultra-dense phase transport. Dilute phase transport is the traditional method of alumina raw material delivery, is the use of warehouse pump or tanker directly from the silo to the purification system of high-level material warehouse. In the level of the delivery pipe material was uneven density of flow, easy to form stagnation flow, the longer the horizontal pipe, this