I am working with white cast irons to make ore grinding balls and I want to get a white cast iron alloy that has good anti-wear properties and high impact resistance, what chemical composition(s) would you recommend for making these alloys for ore grinding balls? like copper ores?
Hi HaroldI am participating in a research project and our objective is to improve the properties of grinding balls for copper mining in my region. I do not have the bond index of the mineral that the mining companies with which they work and some suppliers manufacture grinds of various hardnesses and do not mention the bond index for the hardness of the ball. So I think my question is a bit general in relation to what you illustrate. I will take you at your word and I would like to continue asking you about the doubts that arise in my university project.Hugs
hi josephIn my country, Peru, there is a large mining industry that can use 8-meter semi-autogenous mills (SAG) and they want to provide an alloy that is resistant for them. And some companies indicate that the balls they offer do not have the life time that the suppliers offer them and fail early. And I understand that answering my doubts has many questions behind.Thank you for your response and if we could continue talking about this matter it would be ideal.Hugs
Professor Chavez,Sure, I would be happy to extend this conversation on improved grinding balls for copper ore further. One other caution on white iron balls occurred to me. When concrete clinker grinding moved from steel balls, with I believe NiHard white iron lifters, to white iron balls, they suffered a lot of breakage of the lifters due to the different mechanical properties of the white iron balls. I believe the answer was to move to a tougher Cr Mo white iron lifter. I am working off of memory and I would need to check the details.
I would start by getting some of the balls in use and characterize their composition, hardness (center to edge) and how they were made (cast or forged).
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