Production Status of Diamond Mineral in Mother Land

According to the Mineral Commodity Summaries in 1999, in 1997 the solid grounds annual intersection of congenital ball fields was 57.70 million carats. The countries that ranked the premiere five places in the worlds production were Australia, Congo (Kinshasa), Russia, south-central Africa and Botswana in succession. In 1997 chinas annual internal baseball field production was 120,400 carats. diamond mining in China is comparatively weak and develops slowly in recent years. The diamond mines ar grouped into primeval diamond mines and placer diamond mines. According to the fractional statistics, in 1996 there were eight diamond mines, of which three were state-owned primary diamond mines (mainly the Shandong No. 701 mine, Mengyin, Shandong, and the mine owned by the Wafangdian Diamond Co. of Liaoning) and five were town and township mines (mainly placer diamond deposits mined by local people in Hunan and Shandong). The designed diamond mine capacity is specified as follows: the mining capacity is 366,200 scores of ore per year and the dressing capacity is 330,000 tons of ore per year. Only state-owned mines pitch production scale. The Dingjiagang placer diamond mine at Changde, Hunan, has stopped production; town and township mines are not constructed regularly and ease up no definite production scale.

Influenced by the variation in diamond grade, the diamond production fluctuates greatly. In the 1990s China generally produced 100,000 to 150,000 carats of diamond each year. The annual production of natural diamonds of China in recent years is shown in dining table 4.12.2.cement mill price?http://www.hx-china.com/20.html Table 4.12.2 Production of natural diamonds of China As the production of natural diamonds is very limited and falls far short of the demand of the national economy, more than 90% of industrial diamonds are replaced by synthetic diamonds. At feed there are more than 600 synthetic diamond plants in China, which produce over 400 million carats of single diamond crystals each year. The... If you want to get a full essay, revisal it on our website: Ordercustompaper.com

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