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Mathematical Models for the Efficiency of Flotation Process for North Waziristan Copper

Thesis Info

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Author

Sardar Ali

Program

PhD

Institute

University of Education

City

Lahore

Province

Punjab

Country

Pakistan

Thesis Completing Year

2007

Thesis Completion Status

Completed

Subject

Mathemaics

Language

English

Link

http://prr.hec.gov.pk/jspui/handle/123456789/1477

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726621575

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The objectives of this research are to analyze empirically the effects of different explanatory variables on recovery and grade of copper from ore found in North Waziristan and to develop mathematical models for the enrichment of copper in Pakistan. This study is based on the primary data from flotation process experiment for enrichment of copper. Seven variables were studied in experiments. The variable were type and dosage of collector (X1g/ton) pH (X2), depressant sodium cyanide (X3 g/ton) sulfidizer Na2S(X4g/ton), frother dosage (X5 g/ton), pulp density (X6 w/v) and conditioning time (X7 minute) and consists of 31 observations. Flotation process parameters were studied to concentrate the copper content of chalocopyrite the North Waziristan copper ore. Mathematical models were developed using various model selection procedures. Regression parameters were estimated by applying Ordinary Least Squares (OLS) method for regression analysis and adopted general to simple modeling procedure. In this study we found that the variables X1, X3, X4 and X6 of equation (5.57) are statistically significant and concluded that an increase in these variables there is increase in recovery of copper. Maximum grade were obtained from equation (6.65) the combined significance variable X1, X3, and X7.
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