Process design for gold recovery from the Chester deposit (New Brunswick)
- 出版日期：2002.
- 页数：139 p. :
- 第一责任说明：Lionel Magumbe.
- 分类号：a754 ; a422.1
- ISBN：0612717240(ebk.) :
MARC全文
02h0025916 20111118093750.0 cr un||||||||| 111117s2002 xx ||||f|||d||||||||eng | AAIMQ71724 0612717240(ebk.) : CNY371.35 NGL NGL NGL a754 ; a422.1 Magumbe, Lionel. Process design for gold recovery from the Chester deposit (New Brunswick) [electronic resource] / Lionel Magumbe. 2002. 139 p. : digital, PDF file. Source: Masters Abstracts International, Volume: 41-02, page: 0612. ; Adviser: Akram Alfantazi. Thesis (M.A.Sc.)--Laurentian University of Sudbury (Canada), 2002. The ultimate objective of the research is to conduct a systematic parametric study of gold recovery by gravity and flotation. Gold recovery test-work by gravity was conducted on a Supper-panner, Knelson Laboratory concentrator (KLC) and Wilfley shaking table. A recovery of 70% by gravity was achieved. The theory and operation of the named gravity separation tools will be presented. The tailings from the KLC assaying 0.69g/t Au were also subjected to flotation to recover the gold.;The feed was subjected to a bulk rougher flotation whereby auriferous pyrite was recovered into a bulk concentrate that was upgraded in three stages to a minimum of 300g/t Au. The research focused on understanding the fundamental effects of various processing variables involved in flotation, i.e. reagent addition rates, residence time, effect of temperature on pyrite flotation and the correlation of particle size concentrate grade and recovery. Optimal metallurgical conditions were established and a target gold recovery of 95% was achieved.;The flotation reagent of choice used for this study was Aero 343 (Sodium Isopropyl Xanthate) MIBC was used as the frother. Activation tests were conducted by adding copper sulfate. The tailings were further activated by copper sulfate and floated for a further 5 minutes to scavenge for any gold, which did not respond to the first flotation test work. A recovery of 93% was obtained for a coarse grind of 80% passing 106 microns. Recovery improved to 96% by grinding finer to 80% passing 75 microns. Gold ores ; Gold New Brunswick. Metallurgy. Electronic books. aeBook. aCN bNGL http://proquest.calis.edu.cn/umi/detail_usmark.jsp?searchword=pub_number%3DAAIMQ71724&singlesearch=no&channelid=%CF%B8%C0%C0&record=1 NGL Bs1044 rCNY371.35 ; h1 bs1108