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Abstract Double refractory gold ores such as Barrick's Goldstrike ore contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching One possible remedy is to roast the ore and thus oxidize the pyrite and remove the organic carbon In this research microwave roasting of a double refractory gold ore was investigated as an
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The microwave roasting of a double refractory gold ore was investigated The TGA results showed that the three major reactions involved in the roasting process were oxidation of pyrite oxidation of the carbonaceous matter and the decomposition of carbonates Both the real and the imaginary permittivities of the ore were relatively low but in general increased with increasing temperature
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Walkiewicz et al 1988 present data on microwave heating of a number of minerals and speculate on the potential reduction in grinding energy required for minerals with stress fractures induced by microwave heating Bradhurst and Worner 1990 discuss applications of microwave heating in mineral processing and pyromet-allurgy including drying of coal gold extraction and ore reduction (see
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Microwave pretreatment of a double refractory gold ore With regards to the application of microwaves to refractory gold ores Haque 1987a Haque 1987b has studied the microwave pretreatment of refractory sulphidic ores and achieved gold extractions of over 98%
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Walkiewicz et al 1988 present data on microwave heating of a number of minerals and speculate on the potential reduction in grinding energy required for minerals with stress fractures induced by microwave heating Bradhurst and Worner 1990 discuss applications of microwave heating in mineral processing and pyromet-allurgy including drying of coal gold extraction and ore reduction (see
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Gold ore roasting Recovery of platinum Environmental care PTFE recycling Decontamination of asbestos-containig waste Recovery of calcium fluoride Decontamination of filter dust Thermal process engineering SCR catalysts for air pollution control Advanced materials Production of solar-grade silicon by CVD-processes Microwave desorption of anesthetics Home Expertise Microwave
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This process deals with the problems in traditional fluidized roasting that fuels such as coal have to be added and it is difficult to conduct roast at lower temperature when treating gold ore with lower content of sulphides and avoids uneven roasting by current continuous hot microwave roasting process
Walkiewicz et al 1988 present data on microwave heating of a number of minerals and speculate on the potential reduction in grinding energy required for minerals with stress fractures induced by microwave heating Bradhurst and Worner 1990 discuss applications of microwave heating in mineral processing and pyromet-allurgy including drying of coal gold extraction and ore reduction (see
Chris' Prospecting Encyclopedia Your best source of information on Gold nuggets gold panning how to design and build your own mining equipment metal detecting for nuggets dredging for gold prospecting books California prospecting 49ers rock hounds investing mining stocks mother lode sulfides turquoise jewelry silver gold gems gold flakes prospecting adventures digging
Microwave heating of a material leads to micro-crack formation Micro-crack formation allows size reduction and liberation at a lower stress level Micro-cracks generated enhances access of lixiviants to the mineral of interest Microwave processing enhanced grindability and cyanide amenability of the gold ore
The leachability of gold from the ore is mainly determined by the remaining content of Total Organic Carbon (TOC) The main objective of calcination is therefore removal of carbon to the minimum amount possible in large scale processes The presence of carbon in the ore enables local overheating in a microwave field and oxidative removal of organic carbon at moderate macroscopic temperatures
Microwave Popcorn Bluetooth Speaker Cellphone Covers Stocklots Wind Alternators Aquaponics Kitchen Knives Precius Metal Jewellery Commodities Request for Quote New Clients Brokers Consulting facebook twitter linkedin Tweets von OverbackTrading NEWSLETTER SUBSCRIPTION Your name (First Last) Email address HTML Yes No Chemicals Cement Icumsa
During any mealtime ORE-IDA TATER TOTS™ are the right side to have by your side to win at mealtime Potatoes done perfect since 1952 Made from real potatoes GF Gluten-Free BUY NOW Nutritional Info Share Print Nutritional Info Nutrition Facts Serving Size 3oz (84g/about 7 pieces) Serving Per Container About 10 Amount Per Serving Calories 130 Calories From Fat 70 %
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