a methodology to estimate ores work index values, using miduk copper mine sample

نویسندگان

mohammad noaparast

s rahmati

g. jozanikohan

s. aslani

a. ghorbani

چکیده

it is always attempted to reduce the costs of comminution in mineral processing plants. one of thedifficulties in size reduction section is not to be designed properly. the key factor to design size reductionunits such as crushers and grinding mills, is ore’s work index. the work index, wi, presents the oregrindability, and is used in bond formula to calculate the required energy. bond has defined a specificrelationship between some parameters which is applied to calculate wi, which are control screen, fineparticles produced, feed and product d80.in this research work, a high grade copper sample from miduk copper concentrator was prepared, and itswork index values were experimentally estimated, using different control screens, 600, 425, 212, 150, 106and 75 microns. the obtained results from the tests showed two different behaviors in fine production.according to these two trends the required models were then defined to present the fine mass calculationusing control screen. in next step, an equation was presented in order to calculate miduk copper ore workindex for any size. in addition to verify the model creditability, a test using 300 microns control screenwas performed and its result was compared with calculated ones using defined model, which showed agood fit. finally the experimental and calculated values were compared and their relative error was equalto 4.11% which is an indication of good fit for the results.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Methodology to Estimate Ores Work Index Values, Using Miduk Copper Mine Sample

It is always attempted to reduce the costs of comminution in mineral processing plants. One of thedifficulties in size reduction section is not to be designed properly. The key factor to design size reductionunits such as crushers and grinding mills, is ore’s work index. The work index, wi, presents the oregrindability, and is used in Bond formula to calculate the required energy. Bond has defi...

متن کامل

Prediction of Acid Mine Drainage Generation Potential of A Copper Mine Tailings Using Gene Expression Programming-A Case Study

This work presents a quantitative predicting likely acid mine drainage (AMD) generation process throughout tailing particles resulting from the Sarcheshmeh copper mine in the south of Iran. Indeed, four predictive relationships for the remaining pyrite fraction, remaining chalcopyrite fraction, sulfate concentration, and pH have been suggested by applying the gene expression programming (GEP) a...

متن کامل

A method to determine the ball filling, in Miduk copper concentrator SAG mill

The aim of this research work was to investigate on the ball filling estimation of Miduk semi-autogenous (SAG) Mill via an utilized method. Miduk copper concentrator is located in Kerman Province, Iran, and its size reduction stage includes one gyratory crusher which feeds one SAG mill (9.75 dia.(m)*3.88 length(m)) following two parallel ball mills (5dia.(m)*7lenght(m)). After SAG mill, a tromm...

متن کامل

trace element concentration in soils and plants in the vicinity of miduk copper mine

introduction high concentrations of metals are usually encountered in surface soil and vegetation in areas affected by mining activity (liu et al., 2006). different distribution of elements in chemical fractions result in different bioavailability; therefore knowledge of the total content of an element in soil is not a sufficient criterion to estimate the environmental implications of trace met...

متن کامل

A Multicriteria Index to Estimate Accessibility

To implant sustainable development goals, land-use planners need holistic indicators. An accessibility index appears particularly important but its evaluation focuses still highly on the economic dimension. Geographical Information Systems and Multicriteria Analysis allow us to promote a holistic definition of accessibility. GIS is used to describe the territory in terms of the transport networ...

متن کامل

The Tei index: methodology and disease state values.

Andrew A. Pellett, Ph.D., R.D.C.S.,∗ William G. Tolar, B.S.,† Darrin G. Merwin, B.S.,† and Edmund K. Kerut, M.D., F.A.C.C., F.A.S.E.‡,§ ∗Department of Cardiopulmonary Science, Louisiana State University Health Sciences Center, New Orleans, Louisiana, †Medical Center of Louisiana at New Orleans, New Orleans, Louisiana, ‡Heart Clinic of Louisiana, Marrero, Louisiana, §Division of Cardiology, Tula...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
int. journal of mining & geo-engineering

ناشر: university of tehran faculty of engineering

ISSN 2345-6930

دوره 46

شماره 2 2012

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023