China's non-ferrous metals production in 2009

In 2009, ten non-ferrous metal products output more than 1 million tons of the 10 provinces, of which more than double-digit growth in the provinces of Hunan, Anhui and Guangxi. The top 5 provinces and regions have a total output of 12.712 million tons, acco

Recycling of scrap steel

Scrap iron steel production is an important resource burden, especially in electric furnace steelmaking, to be equipped with 80% of the scrap. Replacing pig iron steelmaking with scrap steel can also shorten the smelting time due to its low content of harmfu

Nanda R & D intelligent robot will speak to work

Nanda show three robots, Edgar robot allows users to project through the network sound and appearance projection on it, instead of their interaction with distant friends. Edgar robot 2 can communicate with humans, can serve as receptionist and tour guide, according to this speech, it intro

Isolation and interception of mine water

After the water source is detected, it is not possible to release water due to conditions, or it is possible to release water, but it is not reasonable. Waterproof measures should be taken to isolate the water source and intercept the water flow.

First, isolat

Study on the separation of pyrite and chalcopyrite by mixed collector

Located in Deqin County, northwestern Yunnan, Yangla Sulfide Copper was discovered in the 1970s and is located in a small copper mine. With the further development of geological work in recent years, a significant increase in the total reserves of

More than 200,000 tons intentional supply contract for Hainan rubber sign

Hainan Rubber disclosed on December 15, 2011 that the company participated in the 2011 China (Hainan) International Tropical Agricultural Products Winter Trade Fair held on December 12. As of December 13, the company signed a total of 16 rubber products with 16 companies on December

Ball mill (1)

First, the semi-theoretical formula derivation of the diameter of the steel ball
The existing ball diameter experience formula has a large limitation and a large error, and some are not very convenient to use in China. Therefo