Xinhua net Kunming on July 30 report (reporter Yang Yueping) in recent years, rare medicinal powder metallic indium expands in breach of global supply and demand. College of Kunming grain industry considers to develop a success from inside stock of the zinc that contain indium the clean metallurgy technology of indium of efficient extraction metal, implementation indium produces major innovation of the technology.
Rare medicinal powder the “ vitamin ” that the metal is known as modern industry, it is the important metal with contemporary high-tech indispensable industry. And rare medicinal powder metallic indium is information of the sources of energy, aerospace, electron and nuclear labour
The crucial foundation material of the high-tech domain such as course of study, indium applies in LCD industry to be able to yield every year only the product of above of 100 billion dollar. In recent years, the domain such as global electron information and new energy resources increases to the demand quickness of indium, the developed country already included the strategy to lay in goods and materials his.
Our country is the nation with the largest reserve of the indium on the world, also be country of production of world the biggest indium at the same time, indium produces per year a quantity to occupy 60 ％ above of the whole world. Our country yields every year from inside zinc of igneous law refine stock of 30 thousand tons of zinc that contain indium, contain indium among them 150 tons, occupy the 50 ％ above of primary producer goods giving birth to indium.
But, existence of traditional indium smelt craft invests cost of big, production utilization rate of negative loading of tall, environment, resource is low and serious problem, and the stock containing indium that cannot handle place of process of zinc of igneous law refine effectively to yield, cause our country annual the loss makes an appointment with 80 tons metal indium, occupy our country to give birth to the 25 ％ of indium crop formerly, cannot suit can last resource of development, construction is managing model social requirement, the no time to delay of clean metallurgy technology that development uses efficient extraction indium.
Kunming manage is versed in college researcher is passed hard, creativity land research and development is successful from the new technology of indium of metal of integrated and efficient extraction in stock of the zinc that contain indium, formed a series of crucial technologies and crucial equipment, overcame the inadequacy of craft of traditional indium smelt. According to Kunming manage is versed in university material and Yang Bin of metallurgy project institute teach the introduction, the vacuum distill that this crucial technology basically includes the element such as indium and zinc, lead, cadmium is detached technology, reduced the use of chemical reagents, realized clean production; Substitute traditional and extractive technology, collect the means of indium from inside the smelt broken bits that contains a lot ofmetallic indium. Use engineering technology of this one a complete set of, of indium of stock of the zinc that contain indium reclaim rate can achieve 90 ％ , at the same time of zinc reclaim rate be more than 90 ％ .
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