铬精粉矿+红土镍矿混合烧结的研究与实践  

STUDY AND RESEARCH OF SINTERING POWDER CHROMIUM CONCENTRATE MIXED WITH LATERITE-NICKEL ORE

作　　者：蒋仁全 邓小东 吕学伟[3] JIANG Renquan DENG Xiaodong LYU Xuewei(Qinghai Jinguang Nickel and Chrome Material Co., Ltd., Xining 816000, China Sichuan Jinguang Industry（Group） Co., Ltd., Guanghan 618300, China Chongqing University, Chongqing 400044, China)

机构地区：[1]青海金广镍铬材料有限公司,西宁中国816000 [2]四川金广实业(集团)股份有限公司,广汉中国618300 [3]重庆大学,重庆中国400044

出　　处：《铁合金》2017年第1期4-10,共7页Ferro-alloys

基　　金：青海省财政支持计划项目(企业技术创新)(2013-G-Q07A)

摘　　要：针对铬精粉矿、红土镍矿单独烧结能耗高的问题,结合不锈钢生产对镍铬金属产品的需求,研究铬精粉矿、红土镍矿混合烧结工艺,取消粘接剂以降低能耗。通过对铬精粉、红土镍矿的物理性质研究,在实验室完成烧结工艺配方,进行试验研究,得出优化配比结果:铬精粉矿、红土镍配比65%∶35%,混合矿总水分配比15%~16%、焦粉5%~6%。同时,介绍了某公司铬精粉矿、红土镍矿混合烧结工艺生产实践,得出优化配方及烧结指标。生产实践证明:铬精粉矿、红土镍矿混合烧结,可以不配加粘接剂,并且烧结指标较好,比铬精矿烧结矿降低焦粉用量18.7 kg/t,降低动力电30.6 kWh/t,烧结矿质量指标适宜于矿热炉冶炼镍铬铁合金的生产,该混合烧结方式已经得到产业化应用。Aiming at high energy consumption of sintering powder chromium concentrate and laterite-nickel ore sepa- rately, combined with the demand of stainless steel making, this paper researched the process of sintering powder chromium concentrate mixed with laterite-nickel ore without adhesives, so as to reduce energy consumption. Experi- ments was finished on the raw material ratio to sintering process. The result shows that the optimum mixture ratio of powder chromium concentrate and laterite-niekel ore is 65% ： 35%, whole water in mixture is 15%~16%, coke powder is 5%-6%. This paper also introduced the production practice, the optimum raw material ratio and the sintering inde- xes. The production practice proved that powder chromium concentrate can be sintered mixed with laterite-nickel ore with out adhesives, and the indexes are better. Coke powder reduces 18.7 kg/t. Power reduces 30.6 kWh/t. The qual- ity index of sintering ore can meet the demand of nickel-chrome alloy production. The mixing sintering method can be made industrial production.

关 键 词：烧结 铬精矿 红土镍矿 实践 

分 类 号：TF046.4[冶金工程—冶金物理化学]