Cyanidation gold concentrator process

Cyanidation of gold concentrator from ore or modern technology to extract gold ore the main method. Cyanidation gold extraction process include: cyanide leaching, leaching pulp washing filters, cyanide cyanide solution or slurry
The extraction and finished a few basic processes such as smelting. China's gold mine existing cyanidation plant basically two types of gold extraction process used, one is a thick continuous counter-current washing machine, set with zinc powder
For settling the so-called conventional gold recovery by cyanidation gold extraction process (CCD method and CCF method), the other is no filter washing, the use of activated carbon adsorption from cyanide gold recovery in the pulp-free over
Cyanide carbon filter pulp process (CIP method and CIL method). Centrifugal equipment cyanidation gold extraction process by processing different materials was divided into two kinds: one is dealing with flotation gold concentrates or handling amalgamation tailings re-election
Cyanidation plant. Using this process are mostly large state-owned mines. Such as Hebei Jinchangyu; Liaoning Wulong, Henan Yu Yang Village; Zhaoyuan, Metro, coke home, Sanshandao centrifugal machine . The other is dealing with mud
Oxidation of ore, with all the mud mixing cyanide gold extraction plant. Such as Jilin trench; Heilongjiang unity ditch; Xinqiao gold and silver mines and other mines in Anhui. In the early 1930s have begun to use the cyanidation of gold
Process. Chinkuashih gold in the 1936 Taiwan 1938, the use of cyanide - zinc replacement processes to extract gold, gold 150,000 annual two. After 60 years of the 20th century, in order to meet national
Economic development, vigorously develop the mineral production of gold in some mines have intermittent mechanical agitation cyanidation gold extraction process and the continuous mixing of gold cyanidation process of gold cyanidation replace the filtration process
. In 1967, the first in Shandong Zhaoyuan Gold Mountain gold plant selection and exquisite mechanical agitation to achieve a continuous production of gold cyanidation process, cyanidation of gold from 70% to 93.23%, from continuous mechanical agitation
Cyanidation gold recovery machine extraction process in the country's major gold speedy promotion. 1970 Pension Jinchangyu gold cyanidation plant Wulong gold deposit in 1977 have been put into operation, then the domestic and gradually put into operation a number of machines
Mechanical agitation cyanidation plant, cyanidation gold extraction process has entered a new stage of development. The continuous development of gold production and gold resources to rapidly develop, since the 1980s, the gold from the clay of high
A significant increase in oxidized ore, the development of such ore mixing cyanide leaching of the whole soil studies, and unity in Heilongjiang to build a ditch on handling 500t gold ore cyanidation plant, put students in 1983
Production. Since then, the whole process of gold cyanidation mud increasingly promote the use, worked in Henan, Jilin, Hebei, Shanxi, Inner Mongolia, gold extraction plant using this method. At the same time, to address the muddy oxidation
Ore in the dense solid-liquid separation filter the difficulties, in November 1979, Changchun Institute of gold began to rally ditch gold ore-free filter charcoal slurry gold extraction process, for the last two years
Pilot study was successful. On this basis, in August 1984 Spirit Lake gold mine in Henan, China-made equipment designed and built using the first day of China's handling of ore CIP 50t gold extraction plant. Make
China cyanidation gold extraction process took a big step forward. CIP gold extraction process to become oxidized ore processing shale rock gold mine gold on the property is one important way. Since then in Jilin, Henan, in
Mongolia, Shaanxi and other places built CIP gold extraction plant. The end of 1984, Ministry of Metallurgical Industry Bureau to promote the gold of gold CIP process in our application, porting advanced foreign technology and equipment, and
David McKee U.S. companies in Shaanxi Province Xitong valley gold, gold Zhangjiakou, Hebei Province, were built a daily ore processing 250t (West tong valley) and a 450t (Zhangjiakou) carbon dip
Gold extraction plant. According to the survey Zhangjiakou gold reached 93.54% (1988 CIP recovery of 90.25%) of the recovery. Technological innovations based on scientific experimental research vigorously, so that China's gold production technology
Technical level has improved greatly. Such as study Jinchangyu gold zinc instead of zinc wire replacement gold clay success of the exchange rate of 99.89%, significantly improved grade gold-bearing clay, zinc consumption of the original zinc wire replacement
Of 2.2kg / t down to 0.6kg / t, a significant reduction in production costs. Then in Zhaoyuan, coke home, new city, promote the use of mines Wulong also made other significant effects. Low-grade oxide ore heap leaching
In Dandong Hushan gold test is successful, one after another in Henan, Hebei, Liaoning, Yunnan, Hubei, Inner Mongolia, Heilongjiang, Jilin and Shaanxi provinces to promote the use of economic effect is obvious for the low
Grade oxide ores opened the way for the development and utilization. According to incomplete statistics, China's current production using heap leaching gold production to reach over million ounces (in Henan Province heap leach gold production accumulated 1.3
Million ounces), but compared with developed countries, China's small-scale heap leaching, typically 1 × 103 ~ 3 × 103t / heap, million t / heap less, technically there is a big gap, 1988 Shaanxi Bai
King County, two-ton heap leach gold mine large-scale field production, and achieved encouraging results (ore grade of 1.5g / t). Advanced foreign technology and equipment introduction and assimilation (such as the United States, effective thickener, double-screw
Spin-mixing tank leaching, Japan's Mars pumps, belt filter, etc.), so that China's gold production at the level of equipment and technical level, there has been further improved, while also promoting our Huang Jinsheng
Production equipment to high efficiency, large-scale, automated direction. Of gold in thiourea, thiosulphate of gold, pre-oxidizing bacteria leaching, pressure leaching catalyst, resin and other new science and technology
Research, new advances in recent years. 1979 Changchun Gold Research Institute of gold thiourea trial is successful, and in Guangxi in 1984 built a long day dealing with mine water flotation gold concentrates 10
~ 20t of gold shop thiourea (1987 through ministerial identification). Although other processes in the pilot study stage and is preparing to plant operation, sufficient to show China's gold extraction technology has been developed to a new water
Level.