Tantalum is a shiny, silvery metal which is soft when is pure. It is almost immune to chemical attack at temperatures below 150 C. Tantalum is virtually resistant to corrosion due to an oxide film on its surface. Tantalum was discovered by Anders Gustaf Ekenberg, a Swedish chemist, in 1802 in minerals obtained from Ytterby, Sweden. Many scientists believed that he had only discovered an allotrope of niobium, an element that is chemically similar to tantalum. Atomic Number 73 Atomic Mass 180.948 Melting Point 3017°C, 5463°F, 3290 K Boiling Point 5455°C, 9851°F, 5728 K Group 5;Period 6;Block d Tantalum is rarely found uncombined in nature. It occurs mainly in the mineral columbite-tantalite, which also contains other metals including niobium. It is mined in many places including Australia, Canada and Brazil. There are several complicated steps involved in separating the tantalum from the niobium. A lot of tantalum is obtained commercially as a by-product of tin extraction. One of the main uses of tantalum is in the production of electronic components. An oxide layer which forms on the surface of tantalum can act as an insulating layer. Because tantalum can be used to coat other metals with a very thin layer, a high capacitance can be achieved in a small volume. This makes tantalum capacitors attractive for portable electronics such as mobile phones. Tantalum causes no immune response in mammals, so has found wide use in the making of surgical implants. It can replace bone, for example in skull plates; as foil or wire it connects torn nerves; and as woven gauze it binds abdominal muscle. It is very resistant to corrosion and so is used in equipment for handling corrosive materials. It has also found uses as electrodes for neon lights, AC/DC rectifiers and in glass for special lenses. Tantalum alloys can be extremely strong and have been used for turbine blades, rocket nozzles and nose caps for supersonic aircraft.
Views: 3257 Top Most 22
An exclusive access to Rwandan mine that is the first to use mobile phones, facial recognition and GPS tracking to follow tungsten from the mine to a Macedonian refinery and on to clients.… READ MORE : http://www.africanews.com/2018/10/23/rwanda-s-first-tantalum-tracking-blockchain-the-morning-call Africanews on YouTube brings you a daily dose of news, produced and realised in Africa, by and for Africans. Africanews is the first pan-African multilingual media outlet, unique in its concept and vision. Subscribe on our Youtube channel https://www.youtube.com/c/africanews and receive all the latest news from the continent. Africanews is available in English and French. Website : www.africanews.com Facebook : https://www.facebook.com/africanews.channel/ Twitter : https://twitter.com/africanews
Views: 316 africanews
Ethiopia tantalum mining in Kenticha Oromia region cause public unrest
Views: 423 Abbay Media - All Things Ethiopia!
Ethiopian Largest Video Sharing Site - http://diretube.com DireTube http://diretube.com - Your Online Entertainment Watch HD Ethiopian Movies @ http://gojocinema.com
Views: 232 newsdire
Kennedy Ventures plc (LON:KENV) CEO Larry Johnson is a mining expert who sits in a class of his own...he's also a visionary...and he rides a Harley when he visits his tantalum mine. How does that help you take a position? Well, it gives you an idea of the kind of dynamic leadership this company is flourishing under...not to mention the plans Larry has in mind for 2018/19. An investing company listed on AIM, Kennedy Ventures is focussed on opportunities principally, but not exclusively in the resources and energy sectors. The tantalum mine project is located in Namibia and Kennedy has a world class mystery customer which they can't tell Proactive about but which does guarantee they are working with 'top deck' end users.
Views: 2105 Proactive Investors Stocktube
JXSC installed an 100 t tantalum tin process plant at Africa at 2018. This cooepration tantalum wash plant with :hopper, vibration feeder, tantalum trommel scrubber, jig and shaking table use, tantalum mining accessory like water and slurry pump, belt conveyor and machines connection chute ,cable and pipes, all supply by JXSC. Tantalum , tin, gold, diamond ,tungsten ct al mineral process plant supplied by JXSC. Pls contact: [email protected] , whatsapp:+86-15779860839 for completely mining machines .
Views: 70 snail liu
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Views: 266 Channels Television
Stephen Fortune, Goldsmiths Alumnus, is explaining the functionality and importance of this piece of work that serves as a memorial for the 4.5 million people who have died during the "Coltan Wars" in Congo. Coltan ore is mined for the metal tantalum used extensively in the production of mobile phones. For more information on the project: http://www.artsandecology.rsablogs.org.uk/2009/01/tantalum-memorial-an-analogue-response-to-congos-coltan-war/ http://mediashed.org/TantalumMemorial
Views: 363 iliaskount
Kazera Global is now supplying tantalum to one of the world’s largest end-users Kazera Global PLC (LON:KZG) is a name you can expect to be hearing on peoples’ lips a lot more in mining circles as the year progresses. That’s because Kazera is the new name for Kennedy Ventures, a familiar company that’s now undergoing a significant transformation. It started with the appointment of Larry Johnson as chief executive in January of 2017. But things really got moving when Johnson locked in one of the world’s top end-users of tantalum to take product from Kazera’s tantalite mine in...
Views: 147 Tech News
http://www.jxscmining.net JXSC is specialized in placer coltan tantalum ore mining equipment manufacturing and engineer service. We provide the full solution for the complete line of coltan tantalum equipment, flow chart design, plan layout drawing, commission, setting up test, training staff service. The coltan tantalum equipment include rotary wash scrubber, rotary screen, jig separator, shaking table, high intensity magnetic separator. More information please visit us www.jxscmining.net or email to [email protected]
Views: 158 JXSC Mine Machinery Factory
Get the price of machines: [email protected] ,for more details, here is our skype: billchanglei123 In terms of quality we use the industry's most demanding standards, from the beginning of Raw material steel, to design aspects and production processes of the product, no one detail is left off. Low energy consumption, high security and reliability, service life of wearing parts is extended and environmental protection and energy saving. It abandons disadvantages of high energy consumption, high waste, being not environmentally friendly of the traditional crusher and inherits advantages of strong passing ability, large handling capacity and high-yield of the traditional crushing equipment. For mining machinery equipment companies, focusing on efficient and energy saving research and development and production and attaching importance to secondary development and recycling of materials have become the latest development concept in this century. Driven by national policy, crusher industry of low-carbon environmental protection and high-tech expands the market demand for crusher. After receiving technical notice, maintenance staff will go to scene immediately for troubleshooting. We promptly accept the technical advice and provide technical diagnosis. It can prevent invasion of dust that damages the bearing.
Views: 127 Bill Hu
In addition to gold, Ethiopia has reserves of platinum, copper, potash, natural gas and hydropower. Further minerals found in Ethiopia includes gold, platinum, niobium, tantalum, nickel, cooper, chrome, manganese, limestone, sandstone, gypsum, clay, lignite, opal, oil shale, laterite iron ore, bentonite, clay, perlite, diatomite, potash, halite, and oil & gas. However, the mineral industry is not a significant sector of the economy, contributing a small percentage to the GDP. On a global scale, Ethiopia is a significant producer of tantalum, producing 7% of the world's supply in 2007. Ethiopia is calling upon the international community to bring in their expertise and skills to enhance this largely untapped mineral bowl.
Views: 32 AFRICA REBORN INTERNATIONAL
Ethiopia: ተደራራቢ አውቶቡሶች በቢሾፍቱ አውቶሞቲቭ ኢንዱስትሪ እየተመረቱ ነው - ENN News
Views: 5590 ENNTelevision
Ethiopian Largest Video Sharing Site - http://diretube.com DireTube http://diretube.com - Your Online Entertainment Watch HD Ethiopian Movies @ http://gojocinema.com ------------- Addis Ababa july 03/2012 The Ethiopian Radiation Protection Authority said it took corrective measures on 58 institutions with a view to preventing the public from deleterious effects of radiation. Authority Director General Abdurezak Oumer told ENA that the Authority has carried out inspection on the institutions following the tips received for the public in Addis Ababa and various parts of the country. To this end, he said the Authority has banned the services delivered through equipment that produce radioactive source. He said the measures include the rearrangement of the facilities of the institutions in a way to prevent their customers from radiation. Abdurezak said the authority took the measure on health institutions providing radiology service and are operating against the regulation of the authority. He said the institutions were reluctant to take correctional measures. The Director said the Authority has been giving awareness raising training to service provider institutions and pertinent bodies as well as various segment of the society. Authority Inspection and Law Enforcement Director, Atnatios Zeleke on his part said the Authority has done inspection on 375 institutions on the vulnerability of radiation. The Authority has also inspected the Tantalum products to be exported by the Ethiopian Mines Development Share Company whether it pose radiation effect or not as per its request. He said improper use of radiation and nuclear technology would cause skin and bone cancer among others. The Authority is exerting at utmost effort to enhance radiation protection activities to control and prevent the deadly effect of radiation, he noted.
Views: 206 newsdire
About Mineral Licensing and:http://www.gyratorycrusher.com/quarry/quarry/iron-crusher.html Iron Ore Mining in Zimbabwe:http://www.gyratorycrusher.com/quarry/quarry/iron-crusher.html washing iron ore reserves to increase efficiencies in steel:http://www.gyratorycrusher.com/quarry/quarry/iron-crusher.html Iron Ore Beneficiation Plant Malaysia,Iron Ore Deposits in Malaysia for:http://www.gyratorycrusher.com/quarry/quarry/iron-crusher.html Limonite iron ore beneficiation plant with limonite ore crushing, separation, thickening and flotation equipments:http://www.gyratorycrusher.com/quarry/quarry/iron-crusher.html Mining industry of Nigeria:http://www.gyratorycrusher.com/quarry/quarry/iron-crusher.html Lega dembi gold mine is the only modern primary gold mine existing in the country. This medium to large scale mine produces kg of gold per year using CIP processing plant. Other mining activities include the production tantalite (250 ton per year) and soda ash 20,000 tons per year), on pilot scale production. Mining of kaolin, dimension stone (limestone, marble, and granite), cement row materials (limestone, gypsum, clay, silica sand pumice), salt and artisanal mining of precious metals, gemstone, industrial minerals and construction materials are the main mining activities in Ethiopia. Environmental officials with the government of Plateau State believe that 1,100 tin and columbite mines, abandoned after the mining boom of the s, now pose serious health risks to as many as 2 million people living in the area. Radioactive mine tailings were reported to be a danger to local people living around mining fields in Jos, Barikin-Ladi, Bukur, Bassa and Riyom districts. petroleum was first discovered in After first thickening, low iron content (-47.25%) limonite ore is moved to ball mill to be grinded into finer powder (90% 0.067mm). The fine ore powder is mixed with middlings after first thickening for second thickening process. The second thickening is conducted for further upgrading of limonite iron ore. The product with iron content lower than 40.08% returns to scavenging, and the one higher than 49.04% passes to reverse flotation. The Precambrian rocks
Views: 655 Jacqueline Sabrina
Coltan is a metallic ore from which the very similar elements niobium, also known as columbium, and tantalum are extracted. Coltan mining specifically in the Democratic Republic of Congo has been associated with child labor & human rights violations. The coltan industry is worth billions of dollars a year. Prices for coltan ranged between $50 and $200 per pound in 2012-and have spiked much higher in the past when supplies were scarce, when the Playstation 2 was first introduced. In 2006, Australia, Brazil, and Canada produced 80% of the world’s coltan, but as of 2012, coltan’s main producers are Australia, Brazil, Canada, Mozambique, and once again include the Democratic Republic of Congo (via smuggling into Rwanda). Additional coltan reserves have been found on every continent except Antarctica. For a variety of reasons, though, the task of supplying world coltan needs has fallen on conflict regions and underdeveloped countries. Coltan products are sold in private, unregulated markets, unlike commodity metals like gold, copper, zinc, and tin. No standards are set or enforced for mining operations and devising safety procedures is the responsibility of mine operators may not prioritize worker well-being. In this RT documentary evils of modern day mining to meet the needs of our most advanced tech is there for all to see. Here in Lionsville we question everything and we have no sacred cows! After-all its obvious that we have been lied to at every turn, by the very people we've chosen to trust. We will keep spreading the message about new frontiers of knowledge and the human emancipation, no matter what..Support us in anyway you can. No matter how big or small. Our paypal account: www.paypal.me/Lionsville. Please donate to keep us up & running. Follow us on twitter: [email protected] We need you to keep the fire of truth burning..."The only thing necessary for the triumph of evil is for good men to do nothing"- Edmund Burke
Views: 315 Lionsville
www.machinejxsc.com,this small capacity rock coltan ore mining machines include small coltan ore jaw crusher, coltan wet pan mill grinding machine, coltan ore concentration table and belt conveyor.wet pan mill is for grind rock coltan ore to -1mm, so can have better separation effect on shaker table.this mini grinding plant is very popular in tanzania/zimbabuwe/kenya/Ethiopia/Cango,ect africa countries. plant also can used for grinding rock gold /tungsten/tin/chrome ore,ect.For more details, pls feel freely contact us:[email protected] , whatsapp:+86-151 8024 5397 skype: amylhy1985
Views: 49 Amy Lin
Larry Johnson, chief executive of Kazera Global PLC (LON:KZG), tells Proactive's Andrew Scott they've commenced a drilling campaign to establish a JORC resource at their Namibia Tantalite Investment Mine (NTI). Johnson says early drill cores have been 'very exciting'. He adds the programme's ultimately intended to establish a JORC resource and understand the mineralisation on the property as well as the future value of the operation.
Views: 1307 Proactive Investors Stocktube
The Democratic Republic of Congo has rich deposits of gold, diamonds, copper and other minerals that unscrupulous business people have been eager to exploit. Rebel groups have used the sale of raw materials to fund civil war, and Rwandan militias in eastern Congo are capitalizing on the sale of coltan, a crucial raw material in the manufacture of electronic devices.Now, developed countries are stepping up pressure on industry to buy exclusively clean, or conflict-free, raw materials. The United Nations has suggested developing a certification scheme to stamp out the trade of dirty or illegally mined materials.
Views: 8449 DW News
http://www.machinejxsc.com tantalum-niobium ore wash machine trommel scrubber is for washing alluvial tantalum-niobium ores with much sticky clay, the drum scrubber washing machine can also applied to wash alluvial gold/tin/tungsten ore/coltan ores, ect. We accept OEM service for the trommel scrubber washer: make the capacity according to customer request, mobile type or stationary type, PU/manganese steel material screen, one/two layer screen, Rubber/manganese steel material lining plates, rubber wheel/steel wheel driving, water spray device, ect. Welcome you to inquiry with us if have interests in Alluvial tantalum-niobium ore wash machine trommel scrubber
Views: 80 JXSC Mine Machinery Factory
X-medics is a specialized tantalum player with more than a decade of knowhow in the field of tantalum products and the manufacturing of tantalum beads. We are continually improving our business concept and today we can offer the leading product quality, the uppermost technical documentation and the shortest lead times available in the market. X-medics is situated in Copenhagen in the high-tech Medicon Valley region area connecting Denmark and Sweden. We supply customers globally in the Americas, Europe, Asia and Africa. X-medics is highly flexible and can handle orders ranging from only a few hundred beads to hundreds of thousands for shipping directly from stock to reach customers globally in a few days. X-medics’ customer base spans from small prototype workshops to large fabrication facilities and includes the majority of the world’s top-10 spinal implant manufactures. X-medics materials are today implanted in millions of patients. To illustrate how X-medics works, let’s take a look at the fabrication of tantalum beads. Tantalum beads, tantalum balls and tantalum spheres are synonyms for the same product. Surgical grade tantalum wire is used as raw material in the manufacturing of X-medics’ tantalum beads. As mandated by the Dodd-Frank law on conflict materials, X-medics evaluates the supply chain concerning conflict-free sourcing. We verify that the raw material supplier has undergone an independent evaluation by an auditor appointed by the Conflict-free sourcing program and that the smelter has a valid conflict free smelter identification number. The conflict free smelter ID and the delivery date of the wire can be found in the certificate that follows any shipment from X-medics. The tantalum wire is now sent for chemical and mechanical testing performed by an ISO accredited laboratory. The laboratory validates the wire against the ASTM and ISO material-standards and issues an independent 3rd party material testing certificate. This certificate is stored by X-medics and a copy is provided as an appendix in the certificate to the customer. If the trial results are acceptable, the wire will be approved for processing into tantalum beads. The beads are manufactured in a series of steps, ground and polished to a narrow tolerance of 5 micrometres or 0.2 micro inches equal to A.F.B.M.A. grade 50. After industrial cleaning and drying the beads undergo an intensive visual inspection by trained personnel. Balls with an uneven shape or with surface defects will be removed from the batch. The tolerance is subsequently tested independently of production by calibrated equipment under the X-medics medical device quality system. The beads are then sent to a specialized ISO certified medical device cleaning facility, where they undergo a validated cleaning and passivation procedure of more than 10 steps to fulfil the requirement of ASTM F86 for surgical implants. The parts are then returned to X-medics together with a cleaning certificate. After the cleaning, a batch sample will be sent to an independent ISO accredited laboratory in order to validate the surface purity of the beads. The laboratory conducts a cytotoxicity test for biocompatibility on the sample. This test reveals if potentially harmful particles or chemicals remain after processing. The laboratory then issues an independent test report with the result. If the 3rd party testing shows that the beads are of adequate purity, the batch will be released for packaging and shipping to our customers The internal and external test results as well as the conflict material information are consolidated in a test certificate provided to the customer together with a copy of the 3rd party material testing certificate and the cleaning ASTM F86 cleaning certificate. The total value of this comprehensive external documentation work adds up to thousands of dollars or euros. As X-medics shares the documentation with a large number of customers, the added cost to an individual order will only be a small fraction of the value. Total production and testing time for a batch of tantalum beads is typically 3-6 months. As X-medics delivers the tantalum beads from stock, customer orders can be handled in only a few hours. Please contact us to quote your next order of tantalum beads, rods or wire. Simply send your request by email to [email protected] More than 99% of our requests are responded to within 24 hours, 7 days a week. If X-medics’ quotation has not reached you the next day, please call us as your email might not have reached us. To see our full product program and find more technical information please visit our website www.x-medics.com
Views: 16157 XMEDICS SCANDINAVIA
Natural Sound Bolivian miners and their families have launched a protest against government plans to privatise a lucrative tin mine. 25-hundred miners have occupied the Posokoni hill mine since Friday. Hundreds more have marched through the streets of Oruro, 260 kilometers (152 miles) from the capital, La Paz. Miners and their families chanted anti-government slogans through the streets of Oruro, Bolivia, on Saturday, demanding jobs at the lucrative Posokoni mine. The mine lies in the mineral rich Huanuni region which the government is planning to sell into foreign ownership. Wives and supporters donned helmets and took to the streets of the nearby town of Oruro in support of colleagues who have occupied the mine since Friday. Many criticised the government under President Gonzalo Sanchez de Lozada. An estimated 25-hundred miners staging the sit-in at Posokoni were unblocking shafts in order to gain access to the mineral deposits. Posokoni tin is rated among the best in the world and is therefore likely to attract much interest from foreign buyers. SOUNDBITE: (Spanish) "The present government is intending to give away our riches to different foreign companies, and we don't want that. What we want is that they give these riches to us so that we can work them." SUPERCAPTION: Eduardo Mollinedo, member of miners' cooperative Miners in Bolivia work in cooperatives which are allocated specific mining rights by the state. Many of these mines have been exhausted and can no longer sustain the livelihoods of those people who work them. Without profitable land to mine, many families would be left with nothing. SOUNDBITE: (Spanish) "There are about 2,500 of us occupying, so that they allocate areas to us here in this place, Posokoni hill, where we get the tin for our livelihood." SUPER CAPTION: Eduardo Mollinedo, member of miners' cooperative The demonstration comes at a fragile time for President Lozada. Bolivia enters a general election on Sunday and Lozada is seeking a further term as president. Many Bolivians do not support his privatisation plans and there is public sympathy for the miners. Some of those living close to Posokoni have offered miners, who've come to protest from other regions, a roof over their heads while the demonstration continues. You can license this story through AP Archive: http://www.aparchive.com/metadata/youtube/aaaf798ded67bfe39ad961f139db83f8 Find out more about AP Archive: http://www.aparchive.com/HowWeWork
Views: 92 AP Archive
JOHANNESBURG (miningweekly.com) – Following the demerger of Afritin Mining from Aim-listed Bushveld Minerals – and its subsequent listing as the only pure - play tin platform on the Aim last week – the company, which has assets in Namibia and South Africa, will focus on becoming “The Africa tin champion” by bringing its flagship Uis tin project, in Namibia, to commercial production, says Afritin Mining CEO Anthony Viljoen.
Views: 172 MiningWeekly
On AIT's Straight Talk, Terverr Tyav takes you to communities in Nigeria's north-central state of Plateau where 112 years after the mining of tin, the mining ponds have been abandoned. What are the lessons for Nigeria as the country under the administration of President Muhammadu Buhari works on diversifying the economy through solid minerals exploration? @terverr
Views: 711 TERVERR TYAV
Objective Capital's Rare Earths, Speciality & Strategic Metals Investment Summit 2012 Ironmongers' Hall, City of London 13-14 March 2012 Speaker: Richard Beazley, Peak Resources To view full video, visit: http://www.objectivecapitalconferences.com/ocic/ree2012-videos.php.
Views: 241 objcapconferences
To our viewers that raised the concern of the Oromos, it was not and it is still not our intent to leave out the Oromo issues. In fact, we have been researching the Oromo issue along with the other ethnic groups. We are well aware that Oromos are a majority ethnic group within Ethiopian and that they have been prosecuted relentlessly by the current government. The mass incarceration of Oromo students and illegal land appropriations the government has been doing, particularly in 2014, is one aspect we have been researching. The committee for this documentary felt that it was prudent to have enough research and data analysis on the Oromo issue before it was included in the documentary. Therefore, it will be included in a second edition that we will release soon, so please bear with us and be patient. For those of you interested in providing information or inquiries, please refer to our email below. [email protected]
Views: 376 Freedom4Anyuak
TPLF| MIDROC GOLD| Negeri Lencho | OBN 5/2/2018 FYI| MIDROC GOLD Contract Renewal In 2017 As per the initial deal the mining contract will be extended for an additional ten years. source: below here: A week ago the Motuma Mekassa, Minister of Mines, Petroleum & Natural Gas, told Capital he does not have the information about what the regional administration is looking for. MIDROC has filed for an extension of an additional ten years on the Lege Dembi Gold Mining that it developed for the last two decades. “The license has not been renewed, but there is time,” Motuma said. MIDROC Gold Mine, which bought the state owned Lege Dembi Gold Mine, 500km south of Addis Ababa in Guji Zone, Oromia region, in 1997 at a cost of USD 172 million for 20 years, will conclude its initial deal before the end of the current budget year. As per the initial deal the mining contract will be extended for an additional ten years. source: http://capitalethiopia.com/2017/11/29/new-law-gives-regions-control-mining/#.Wuph90xFxjo http://capitalethiopia.com/2017/11/29/new-law-gives-regions-control-mining/#.WutmIkxFxjp [email protected] copyright 2018 BilisummaaTV oromia
Views: 686 BilisummaaTV Oromia
Tokkummaa jechuun dhaaba siyaasaa tokko qofaa jalatti hiriruu jechuu miti!
Views: 1567 OBS TV