tag:blogger.com,1999:blog-6908362959739425575.post5376996697701956841..comments2024-03-29T07:54:12.874+00:00Comments on MEI's Barry Wills: Comminution '21 Day 3 updateMEIhttp://www.blogger.com/profile/14834780351452765156noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-6908362959739425575.post-50479058231723841682021-04-22T13:28:12.737+01:002021-04-22T13:28:12.737+01:00I agree with Professor Rao's above comments wi...I agree with Professor Rao's above comments with my understanding that we must adopt world best technological know how whatever is available for zero waste mining and utilizing 100% available resources keeping in view of intergeneration equity and sustainable development. The Government Policy documents must be implement in true sprit to safeguard mother earth from unscientific, unsustainable exploitation. Unknownhttps://www.blogger.com/profile/08663652029795311266noreply@blogger.comtag:blogger.com,1999:blog-6908362959739425575.post-78112754523556159512021-04-22T07:04:45.348+01:002021-04-22T07:04:45.348+01:00I agree with Barry on the third-day proceedings--p...<br /><br /> I agree with Barry on the third-day proceedings--presentations and discussions around HPGR and SAG Mills.<br />Let me take a "more practical view" apart from the various aspects we may have discussed on any mill.<br />Let me present my views from a practical perspective.<br />The ore characteristics and the liberation characteristics vary--many times the size range and minimum assay(two parameters))become constraints depending on the subsequent metallurgical process--say in the case of iron ores--lumps for B.F.. and something else for sinter and /different for pellet plant. Even a single metal producer will have all of them. Many times they buy the raw ore from different sources whose characteristics keep varying from day to day--PLEASE NOTE that I am speaking from the Indian context<br />So how does a mineral engineer operating his beneficiation circuits meet the "stringent needs " of these consumers (metallurgists); yes, I pity the metallurgist also to some extent.<br />For copper ores,--as we go down in depth or horizontally--the ore may become malachite rich though the mine was opened for chalcopyrite.<br />With the above, what type of mill one should select so that ROI is within a given time frame.<br />Tumbling mills.HPGR and sag have their own performance characteristics. J.K.'s name came and so I will not touch that aspect--as Barry said, let that be for another day with J.K being there.<br />Now, THE MOST critical question is "manufacturing of these types of mills"--a lot of engineering, specifications/. a lot of R&D, then heavy capital investment, and so on apart from marketing. How can one Company be sure of how many mills they would be able to sell globally per year--offices, expertise in marketing--very complex.<br />I have been involved and have been interacting with equipment manufacturers and operating people---<br />So a "holistic view" is a must--maybe a summit between all stakeholders at a global level to at least discuss--. If we discuss climate change, WHY NOT MINERAL EXPLOITATION.<br /> Centrifugal Comminution very exciting and hope it helps to produce at least pellet feed with minimum energy consumption at high throughputs--is it a dry or wet process?<br />Going great Barry and Team, I am definitely reenergized. I wish I am spending the evenings with the participants.<br />Best to all.Rao,T.C.https://www.blogger.com/profile/11160713677908165404noreply@blogger.com