How to analyze the test report of blast furnace water-quenched slag for copper! !
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I feel very helpless when I first get the test results; I don’t know which data to analyze – things like silicic acid content and Fe/SiO2 – and I’m not sure if they are useful or not
Of course it’s useful. Are you using a blast furnace for copper smelting there? Just find a book on copper metallurgy or something and you’ll know
Reply to 2# laomao123: Looking at it now
Reply to 4# syhhscs: Well, those four values have been obtained, but I don’t know how to analyze them. They are Fe, CaO, SiO2, and Cu %. What is the typical value for FeO/SiO2?
The silicic acidity of the slag is about 1.2, with Fe: 28-33； CaO11-14 ； SiO2 34-36 ； Cu 0.2-0.3
Reply to 6# Lu Doujiang: I have analyzed the data from the past few months – the Fe content is between 18% and 20%, CaO between 18% and 24%, and SiO2 between 30% and 35%. The Cu% is about 1.5% higher. Our factory doesn’t use converters; we produce crude copper using blast furnaces. Is this Cu% within the normal range?
It is done through direct reduction smelting of oxidized ore, right? A slag content of 1.5% results in too high a copper level; the ideal value should be around 0.6 to 0.8%. It also depends on how the slag type is selected during design.
The crude copper is obtained right after coming out of the blast furnace, right? That can’t be right Billet copper is more or less okay. The slag also has a somewhat high copper content. It should be around 0.5%.
Reply to 8# syhhscs: Yes, it’s an oxidized ore material. 1.5% seems to be quite high; there’s very little matte, and once it’s produced it’s sent back to the furnace for further processing. Does your factory process it in the same way? I see that there’s very little information about oxidized ores in the books; it’s mainly about sulfide ores. Let’s exchange ideas! !
Oxidized ore is used to produce brass, with a brass purity of 80–90%; the copper content in the slag is kept below 3%. Your target value isn’t very high – it’s difficult to reduce it to below 1%. 1.5% should be reasonable.