目前碳素铬铁生产中存在的主要矛盾是符合冶炼要求的块状铬矿越来越少。60年代以来,日本、南非和苏联等国从原料处理入手,在利用粉状铬(精)矿进行球团、烧结、制块方面做了不少工作,并部分投入生产,其中尤以预还原球团节电效果最为明显。铬矿球团预还原是用固态还原法取代部分炉料在炉内熔化后的液态还原。这样,就可用焦末、煤、煤气等廉价能源代替部分电能,减少冶炼电能消耗,同时还可大幅度提高电炉生 At present, the main contradiction existing in the production of carbon ferrochrome is that fewer and fewer chrome chromes meet the smelting requirements. Since the 1960s, Japan, South Africa and the Soviet Union have started to deal with raw materials. They have done a lot of work in the pelletization, sintering and pelletizing of powdered chromium (refined) ore, and have put into partial production. In particular, pre-reduction Power saving effect is the most obvious ball. Chromium ore pellets pre-reduction is the solid-state reduction method to replace some of the charge in the furnace after melting the liquid reduction. In this way, you can use the coke, coal, gas and other low-cost energy to replace part of the electricity, reducing smelting power consumption, but also can greatly enhance the electric furnace