Mercury ore dressing

When the ore contains HgO.l%~0.5%, the mercury concentrate grade is 10% to 30%, and the recovery rate is 9. % to 96%. The re-election-flotation combined process is more common in mercury ore beneficiation . Re-select the jig or shaker to obtain high-grade cinnabar concentrate, re-select the tailings after re-grinding and flotation to obtain concentrate. When the ore contains Hgo.069%~0.695%, the cinnabar containing Hg83.66%-84.66% is re-elected, and the flocculation concentrate contains Hg12.5%-23,77% cinnabar concentrate. The total recovery rate can reach 91.6. % one 9622%. Multi-mercury metal ore, the use of the combination dressing and smelting rule selected from a joint process.

The mercury odor (intermediate) produced by the smelting process of mercury can be treated with a shaker or a cyclone. The typical ore dressing plant Guizhou Mercury Mine Erkeng Concentrator is located in Wanshan County, Guizhou Province, China. Started production in 1981. Processing a single mercury ore with a production scale of 300t/d. The main metal ore minerals cinnabar, associated with a small amount of pyrite, stibnite, sphalerite and natural mercury. The gangue minerals are mainly dolomite, followed by quartz and calcite . The granules have a particle size of 0.4 to 0.6 mm, a maximum of 12 mm and a minimum of 0.02 mm. The beneficiation process consists of two sections of crushing ore, re-election and flotation combined process. The products are cinnabar and cinnabar concentrate. The original ore grade is 18%, the concentrate grade is 22.92%, and the recovery rate is 96.02%. The Wuchuan Mercury Concentrator is located in Wuchuan County, Guizhou Province, China. 197. It is put into operation in the year and processes a single cinnabar type mercury sand. The production scale is 150t/d. A small amount of limonite, pyrite, sphalerite is associated with the ore. The gangue minerals are mainly calcite and dolomite, with a small amount of barite . The beneficiation process consists of two sections of open-circuit crushing, a closed-circuit grinding, and a single flotation process. The product is Chensha concentrate. The original ore grade is 1.23%, the concentrate grade is 17.5%, and the recovery rate is 94%.

Proeessing of mercury ores The process of separating and enriching mercury minerals from mercury-containing ores. Mineral processing products include mercury concentrate and cinnabar. Mercury concentrates are sent to smelters to extract mercury; cinnabar is a smelted mercury sulfide mineral that is directly sold as a product. Minerals and resources There are about 20 kinds of mercury minerals in the natural world. The industrially significant mercury minerals are mainly cinnabar, followed by natural mercury, black cinnabar, sulphur, mercury sulphide ore. Mercury ore with a single type of industrial mercury ores, mercury, antimony ores, mercury key uranium ore, zinc ores, mercury and lead, mercury, copper ore, gold ore mercury, mercury polymetallic ores. Major Mercury Minerals Table II Mercury Mine is a famous mineral in China, and China's mercury resources rank first in Asia. Guizhou is the main producer of mercury mines in China, followed by Hunan and Guangxi. Most of China's mercury mines are lean ore, mainly underground mining, which is small in scale and symbiotic ore accounts for l/3.

The world's important mercury-producing countries are Spain, Italy, Yugoslavia, Canada, the United States, Mexico, Algeria, and Turkey. Many mercury mines are large in scale and high in grade, mostly open-pit mining. The process was first smelted with a single sulphide sulphide ore. In recent years, due to the decline of ore grade, the nature of ore has become complicated, and the requirements for energy conservation and environmental protection have increased, and mercury ore beneficiation has been developed. The density of cinnabar is large, the hardness is low, the brittleness is good, and the floatability is good. When developing the beneficiation process, we must try to prevent the cinnabar from being crushed during the crushing and grinding process. The process of mercury ore beneficiation includes pre-selection, re-election, flotation, re-election and flotation combined processes and joint metallurgical process. Hand selection is a traditional pre-selection method for mercury ore. Hand selection can get concentrate and throw away some waste rock.

When the ore pull is 20~10omm, the throwing rate of hand-selected waste rock can reach 40%-8. %. It is also possible to utilize the characteristics of cinnabar brittleness, selectively enrich in the fine fraction during the crushing process, and then remove the on-screen product (waste stone) by a sieving machine. Re-election of seven to use jigging beneficiation and shaking Zhu beneficiation. This method has a low recovery rate and is rarely used alone. Flotation is an effective method for recovering fine-grained mercury minerals and polymetallic symbiotic ores. Usually one or two stages of grinding, including rough selection and multiple selection and sweeping flotation processes. The activator of cinnabar flotation is copper sulfate and lead acetate, and the collectors are xanthate, black medicine and sulfur nitrogen No. 9.