This paper describes the technological process, operating conditions, production practice and technical improvement of calcine leaching in zinc circuit.
介绍了锌系统焙砂浸出的工艺流程，操作条件，生产实践及技术改进。
Practice indicates that application of and improvement on the casting process is an important technical measure to ensure efficient smelting and low cost of pig iron.
实践表明，渣铁沟浇注料工艺的实施和不断完善，是高炉强化冶炼、降低生铁成本的重要技术措施。
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