Advances in Organolanthanide Chmistry in China

ＡｄｖａｎｃｅｓｉｎＯｒｇａｎｏｌａｎｔｈａｎｉｄｅＣｈｍｉｓｔｒｙｉｎＣｈｉｎａＳｈｅｎＱｉ（沈琪）（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＳｕｚｈｏｕＵｎｉｖｅｒｓｉｔｙ，Ｓｕｚｈｏｕ２１５００６，Ｃｈｉｎａ）Ｒｅｃｅｉｖｅｄ：Ａｐｒｉｌ２...     

Mine Production in Concentrate form in 2000

~~Mine Production in Concentrate form in 2000~~     

Mine Production in Concentrate form in 1999

┌─────────────────┬───────┬────────┬──────┐│Nam6 Of COnC6ntrateS │ProdUCtion in │TOtal at 6nd of │%Change ││ │ Aug,1999 │ Aug,,999 │ ,98一,99│├─────────────────┼───────┼────────┼──────┤│CoPPer concentrate │36024.69 │284540.17 │4 .39 │├─────────────────┼───────┼────────┼──────┤│L6ad COnCGntrate │34130.22 │270055.83 │一11、55 │├──────…     

Mine Production in Concentrate form in 2000

┌────────────────┬──────┬───────┬──────┐│Nam6 Of ConCGnt门te$ │PmdUdion in │TOta!at 6ndof │{%Change ││ │ SePt 2000 │ SePt 2000 │}1999一2000 │├────────────────┼──────┼───────┼──────┤│COPPer concentrate │59032 │427565 │ID26 │├────────────────┼──────┼───────┼──────┤│Lead ConCGntrate │44065一 │402709 │17.65 │├────────────────┼────…     

Mine Production in Concentrate form in 2000

Unit:metd。ton。f meta一。o。坦。鱼竺望些竺丝里些Name of eoncentrates户奋6ductlon诬nM盯空里塑些竺旦些些些些 Lead coneentrate Z百nC COncGntrate一雨雨药而而而蔽而 2000 4111735849.83122494.7 44737671.25 7265.3 3334 35811’O tal at end of May20叼些一 192458T吸n concent找deAntimon丫coneentrate WoreConCGntr日t6Mo ore eonCentfate饭m护曰03 65%)砚mtIM醒旦型里丛166171.7454279.81 20640 32325.5 31540.39 13911 17638%Change1999一000 8、51 7 .57 9 .78 8 .57 1 1.24 0一42 24一9 13.87Mine Production in …     

Mine Production in Concentrate form in 2001

┌───────────────┬───────┬────────┬─────┐│Nsme of CollCentrateS │Produetion in │Totsl at end of │%Change ││ │入18rCh 2001 │Mareh 2001 │2000·2001│├───────────────┼───────┼────────┼─────┤│CoPPer eoneentrate │46271 │138748 │9 .81 │├───────────────┼───────┼────────┼─────┤│Lead CollCelltfatC │56374 │128782 │3 .25 │├───────────────┼────…     

Mine Production in Concentrate form in 2001

┌───────────────┬───────┬────────┬─────┐│Name of ConCentrateS │Produetion in │Total at end of │%Change ││ │February 2001 │February 2001 │2000一2001│├───────────────┼───────┼────────┼─────┤│CoPPer eoncentrate │42767 │78311 │9 .14 │├───────────────┼───────┼────────┼─────┤│LCad eoneentrate │34652 │69756 │15.23 │├───────────────┼─────…     

Application of Rare Earth in Steel in China

Application of rare earth in steels has gone through three stages in China.The investigation of rare earthadding method begun at the late 1970's has solved the technical problems caused by rare earth addition.Controlling sulphide morphology,several rare earth treated steel grades with improved properties have been developedand put into production.Rare earth exerts remarkable effect on the performance of low sulphur steel and on thehydrogen behavior in steel.Rare earth used for surface treatment of iron and steel materials expands rare earthutilization.     

Difference in BOF Slag Splashing in US and China

Slag splashing is a relatively new technique thathas been used successfully to enhance refractory lifein BOF′s.During the last ten years,slag splashinghas been used by many steel works in the US[1— 3 ] .Recently,slag splashing has also been applied tomore than twenty steel works in China. Althoughthese steel works are successful to varying extentswith slag splashing,some differences are exhibitedbetween the US and Chinese steel works because ofdifferent conditions in their BOF steelmaki…     

The Largest Gold Mine in Asia was Found in Gansu

Recently,at Yangshan,a place bordering with Shaanxi and Sichuan provinces,of Wen County in Gansu Province,the largest gold mine in Asia was found with proved gold reserve of 308 tons,changing the history of having no super large independent gold deposits over 200 tons in China.     

Lead Consumption in China and the Trend in the Near Future

In the period 1998-2002,China's GDP grew by7.6 percent annually and by 2002,it reachedRMB 10,239.79 billion.All the pillar industriesof the Chinese economy,including the automo-biles,construction,transportation and tele-communications,have experienced rapid     

Development Status and Research Progress in Rare Earth Hydrometallurgy in China

Characteristic and hydrometallurgy processes for Baotou mixed-type rare earth concentrate, bastnasite, and ionic adsorption deposit in China were reviewed. The R ＆ D circumstance and new progresses in extraction and separation of RE element in China were introduced. Moreover, the development trend of RE hydrometallurgy was predicted. The direction and emphasised fields of research and development are also brought forward as： to R ＆ D high efficient green progresses in hydrometallurgy and separation of RE ore, resolve the waste pollution problem of water, slagand gas, reduce the chemical material consumption and improve comprehensive efficiency of resources; to R ＆ D preparation technology for RE compounds with ultra high-purity and special physical property for extending application fields of RE.     

Alumina Price in China

┌──────┬───┬──────────┐│Time Period │PriCe │%Chan只e(2001·2002)│├──────┼───┼──────────┤│Jun.ZO02 │2018 │一9 .78 │├──────┼───┼──────────┤│Jul二2002 │1991 │一9 .71 │├──────┼───┼──────────┤│Aug.2002 │1992 │一4 .03 │├──────┼───┼──────────┤│SeP.2002 │1978 │一3 .64 │├──────┼───┼──────────┤│Oet二2002 │1996 │一3 .34 │├──────┼──…     

Lattice Effects in La-Sm-Ca-Mn-O

The doping effects of Sm in La0.67Ca0.33MnO3 oxide were studied. The results show that with increasing the doping amount of Sm the phase transition temperature of metal-insulator for the materials decreases monotonically, the cor-responding peak resistance increases rapidly, the Curie temperature decreases monotonically, and the magneto-resistance ratio increases quickly. The effects of Sm doping can be explained in terms of lattice effects.