توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱The Possibility of Using Thioglycolic acid instead of sodium sulfide in the Molybdenum Enrichment Plant of Sarcheshmeh Copper Complex
نویسنده(ها): ، ، ،
اطلاعات انتشار: ششمین کنگره بین المللی مهندسی شیمی، سال
تعداد صفحات: ۵
In this research the use of Thioglycolic Acid (TGA) as a copper and iron sulfides depressant instead of sodium sulfide in the Molybdenum Enrichment Plant of Sarcheshmeh Copper Complex has been studied in laboratory scale. After determining and optimizing the main effective factors on the molybdenum recovery and copper depression, the flotation tests of rougher stage and seven cleaner stages were done subsequently and the variation of molybdenum recovery and copper depression resulted from two mentioned depressants were compared. It found that the depressing effect of TGA was better than sodium sulfide and resulted in high recovery of molybdenum. The use grades of impurities in the final concentrate found under standard ranges and were desirable. This reagent was found suitable environmentally, metallurgically, operationally and economically.<\div>

۲Effect of grinding media on pulp chemistry and flotation of TAKNAR Cu– Zn sulphide complex ore
نویسنده(ها): ، ،
اطلاعات انتشار: اولین کنفرانس ملی فناوریهای معدنکاری ایران، سال
تعداد صفحات: ۸
A complex massive sulphide Cu–Zn sample from TAKNAR mine from Iran was used for all the experiments. The main aim of this study was to investigate the effect of grinding media (dry or wet) on the pulp chemistry and recovery of Cu and Zn in bulk concentrate. After crushing stages, a 1100 g of ore sample was milled. Mill products with d80=85 and 75 micron in wet and dry grinding methods were produced. Rougher bulk flotation experiments were performed with 550 g ore samples, at 30% solids. Sodium Iso Propyl xanthate (SIPX) in conjunction with Aero238 in 1:2 ratio (48 g\t) was used as mixed collector system, and copper sulphate (200 g\t) and MIBC (20 g\t) were employed as sphalerite activator and frother. Sodium hydroxide and High purity Oxygen gas were used for adjusting pH at 8.5 and aeration. The results have shown that, more positive pulp potentials were measured when the feed had been ground in a dry media and the difference in pulp potentials between the dry and wet ground feed was approximately 250 mV. Compared to wet grinding method, in dry grinding method the recovery of Cu and Zn increased approximately 5 and 10%, respectively.<\div>
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