lead

Plastics, tungsten compound offers solution to lead bans in medical

Rare Industrial Metal - Tungsten / Wolfram

Government regulations on lead and other hazardous substances in various electronic and electrical equipment are forcing medical device OEMs and others to find suitable substitutes for parts that have been manufactured from lead and other restricted materials, with plastics coming to the rescue.

Dielectric Corp. (Menomonee Falls, WI), a fabricator of thermosets, thermoplastics, and various metals, now offers a material alternative to those being restricted by government regulations: poly-tungsten thermoplastic. This material can be machined and fabricated in a variety of configurations, and has the density of traditional metals without the safety issues associated with lead, according to the Company.

Poly-tungsten is more durable than other lead substitutes and offers equal or better radiation-shielding capabilities in electronic and electrical products. Because it is malleable, poly-tungsten offers increased design flexibility and the opportunity to create molded parts in lieu of multi-part assemblies.

Perry Pabich, COO for Dielectric, commented, “All of the expense associated with hazardous material - from material handling and manufacturing to employee safety and disposal - is eliminated with poly-tungsten. In addition, the malleable material gives designers freedom that they haven’t enjoyed in the past. As a result, OEMs will find poly-tungsten to be a cost effective and attractive alternative to lead.”

The Restriction of Hazardous Substances Directive, or RohS, was adopted by the European Union in 2003 and expanded in July 2011 to include medical devices and other previously exempted electronic and electrical devices. Medical devices must be in compliance beginning July 22, 2014. Other countries, and even individual states, have enacted regulations regarding the use of hazardous substances such as mercury, cadmium and lead in electronic and electrical devices, according to Dielectric.

Dielectric will have examples of poly-tungsten parts and material on exhibit in Chicago, Nov. 27-Dec. 2, at RSNA 2011, the annual meeting of the Radiological Society of North America, in booth #4755. Dielectric is known in the industry for its materials expertise and ability design custom components and assemblies that optimize price and performance. The company has another facility in Iowa, and both the Wisconsin and Iowa facilities are ISO 9001-2008 certified.

By: Clare Goldsberry
Source:  http://www.plasticstoday.com/articles/plastics-tungsten-compound-offers-solution-lead-bans-medical-1128201104

U.S. Preparing for the Coming Shortages in Metals and Minerals

Rare Earth Elements critical to 80% of Modern Industry

Many if not most metals, rare earth minerals and other elements used to make everything from photovoltaic panels and cellphone displays to the permanent magnets in cutting edge new wind generators and motors will become limited in availability. Geologists are warning of shortages and bottlenecks of some metals due to an insatiable demand for consumer products.

 2010 saw China restrict the export of neodymium, which is used in wind generators and motors. The move was said to direct the supplies toward a massive wind generation project within China. What happened was a two-tiered price for neodymium formed, one inside China and another, higher price, for the rest of the world.

Dr. Gawen Jenkin, of the Department of Geology, University of Leicester, and the lead convenor of the Fermor Meeting of the Geological Society of London that met to discuss this issue is reported in the journal Nature Geoscience, highlighting the dangers in the inexorable surge in demand for metals.

Dr Jenkin said: “Mobile phones contain copper, nickel, silver and zinc, aluminum, gold, lead, manganese, palladium, platinum and tin. More than a billion people will buy a mobile in a year — so that’s quite a lot of metal. And then there’s the neodymium in your laptop, the iron in your car, the aluminum in that soft drinks can — the list goes on…”

Jenkin continues, “With ever-greater use of these metals, are we running out? That was one of the questions we addressed at our meeting. It is reassuring that there’s no immediate danger of ‘peak metal’ as there’s quite a lot in the ground, still — but there will be shortages and bottlenecks of some metals like indium due to increased demand. That means that exploration for metal commodities is now a key skill. It’s never been a better time to become an economic geologist, working with a mining company. It’s one of the better-kept secrets of employment in a recession-hit world.”

There’s a “can’t be missed” clue on education and employment prospects. “And a key factor in turning young people away from the large mining companies — their reputation for environmental unfriendliness — is being turned around as they make ever-greater efforts to integrate with local communities for their mutual benefit,” said Jenkin.

Among the basics that need to be grasped to understand the current state of affairs are how rare many metals, minerals and elements really are. Some are plentiful, but only found in rare places or are difficult to extract. Indium, for instance, is a byproduct of zinc mining and extraction.

Economics professor Roderick Eggert of the Colorado School of Mines explains at the U.S. Geological Survey meeting indium is not economically viable to extract unless zinc is being sought in the same ore. Others are just plain scarce, like rhenium and tellurium, which only exist in very small amounts in Earth’s crust.

There are two fundamental responses to this kind of situation: use less of these minerals or improve the extraction of them from other ores in other parts of the world. The improved extraction methods seem to be where most people are heading.

Kathleen Benedetto of the Subcommittee on Energy and Mineral Resources, Committee on Natural Resources, U.S. House of Representatives explains the Congress’ position for now by saying in a report abstract, “China’s efforts to restrict exports of mineral commodities garnered the attention of Congress and highlighted the need for the United States to assess the state of the Nation’s mineral policies and examine opportunities to produce rare earths and other strategic and critical minerals domestically. Nine bills have been introduced in the House and Senate to address supply disruptions of rare earths and other important mineral commodities.”

Another prominent session presenter Marcia McNutt, director of the U.S. Geological Survey adds in her report abstract, “Deposits of rare earth elements and other critical minerals occur throughout the Nation.” That information puts the current events in the larger historical perspective of mineral resource management, which has been the U.S. Geological Survey’s job for more than 130 years. McNutt points out something interested citizens should be aware of, “The definition of ‘a critical mineral or material’ is extremely time dependent, as advances in materials science yield new products and the adoption of new technologies result in shifts in both supply and demand.”

The geopolitical implications of critical minerals have started bringing together scientists, economists and policy makers. Monday Oct 10th saw the professors presenting their research alongside high-level representatives from the U.S. Congress and Senate, the Office of the President of the U.S., the U.S. Geological Survey, in a session at the meeting of the Geological Society of America in Minneapolis.

Those metals, rare earth minerals and elements are basic building materials for much of what makes energy efficiency, a growing economy, lots of employment and affordable technology possible. Its good to see some action, if it’s only talking for now. At least the people who should be keeping the system working are sensing the forthcoming problem.

Source: OilPrice.com

Metals Through the Roof

Speakers at the Mining Indaba in Cape Town this week seemed as one in warning of a near-term supply-demand squeeze and some solid price increases for a swathe of metals.

They made the point that China and India will be central to minerals demand growth. And among the so-called rare-earth metals that are crucial to many of today’s high-tech products, China is the leading producer and is curbing exports unless they are already processed into manufactured products. As consultant Jack Lifton saw it, stronger demand has not (and cannot) lead to greater production.

Many of the metals that are needed for items such as solar panels, super-conductors and jet engines are produced as by-products of lead, zinc, copper, manganese or aluminium mining. There is no chance of increasing production of indium, gallium, germanium, rhenium, thorium and tellurium from primary mines.

It is not the same for copper, the metal showing the second-highest price increase over the past year, lead was first and zinc third. These are metals that better reflect the state of demand in the real economy.

Chinese demand is growing and, there are supply constraints. New mines cannot be brought on stream at the flick of a switch. Iron ore is in much the same boat. Price rises will be far more restrained than they were a year or two ago.

Silver Brighter future than gold

20 Dec, 2010, 02.45AM IST, Vivek Kaul and Prashant Mahesh,ET Bureau
Silver: Brighter future than gold?

You’d probably laugh it off if someone claimed silver is the hottest metal, given gold’s runaway prices. Since the beginning of the year gold is up about 20%. Silver, in the same period, has given a whopping 60% return. “This relative outperformance will continue,” says Vijay Bhambwani, CEO, BSPLindia.com.

Silver price is at a 30-year high of $30 an ounce (Rs 45,665 per kg). Let us do a quick analysis to find out if you should invest in it.

Riding on high demand: Silver has more industrial applications than any other metal. A recent report by Hinde Capital says: “It’s the best conductor of both heat and electricity, the most reflective, and second-most ductile and malleable element, after gold.” The white metal is also being put to several new uses-water purification, air-handling systems and a natural biocide.

“New products using silver’s biocidal qualities are being developed each year; clothing, bandages, toothbrushes, door-knobs (flu-protection), keyboards, the list goes on,” Hinde Capital report points out.

On supply side, things are grim: Silver analyst Theodore Butler at Butler Research says, “Silver inventories are down from 10 billion ounce in 1940 to 1 billion ounce today. Gold inventories, in contrast, are up 4 billion ounce since 1940, according to World Gold Council.” The world has five times more gold than silver, he says. Though this may be extreme, it’s true that silver will soon become scarce. Jeff Nielson, editor, Bullionbullscanada.com says he would side with a more conservative 6:1 gold silver ratio. “This is small enough, given the 47:1 price ratio.”

Also even though the earth’s crust has 17.5 more silver than gold, production of silver cannot be ramped up overnight. Almost two-thirds of the silver that is mined comes as a byproduct from mining of metals like copper, lead and zinc. So it isn’t easy to ramp up production straight away. Data from the silver institute suggests silver mine production rose 4% to 709.6 million ounce in 2009.

No recycling of silver: Silver recycling isn’t always possible primarily because it is used in very small quantities as an industrial metal, and not always monetarily viable to recycle. Even at its current price, recycling doesn’t make sense. As Nielson pus it, “We must remember that virtually all the gold in the world has been conserved (recycled) because it’s high value economically justified recycling. So, may be when silver advances to somewhere between $50 and $100 an ounce, we should start to see much more recycling.”

High price in short and long term: Mismatch between price and demand makes silver a great long-term bet. “For most of the last 5,000 years, gold silver price ratio averaged 15:1. The current ratio of over 45:1 is unjustified and unsustainable,” says Neilson. The logic behind this is that silver is roughly 17 times more plentiful than gold (though its supply is rising at a lower pace). So with current gold price at about $1,400 an ounce, silver should be around $93 an ounce. That’s nearly three times silver’s current price. If market corrects this ratio and silver price rises to this level, it’s a huge bounty for investors. As Butler says, “I’ll be amazed if we don’t climb past $100 an ounce in the next three to five years. The amazing thing is, despite silver [prices] being up five times from its lows of about $4 an ounce, the current investment thesis is better than ever. That’s because silver is getting greater investor awareness.”

Prospects are high in the short term too. “In the next couple of months, silver could trade between Rs 46,000 and Rs 47,000 a kg,” says Rakesh Varasia, research officer, Indian Bullion Metal Association. “Inventories are so severely stressed that the next spike in 2011 will most likely take silver to or above $50 an ounce (about Rs 75,000 a kg),” adds Nielson.

Gold goes up, silver follows: Gold prices have been going up for a while given countries around the world either printing money or threatening to do so, leading to investors betting on gold. “Relentless debasing of fiat currencies will inflate gold further,” says Bhambwani of BSPLindia.com. His views are echoed by Ritesh Jain, head, fixed income at Canara Robeco Mutual Fund. “Silver is seen to be a poor cousin of gold. If gold prices rise, silver will follow closely,” he says.

How to buy silver: The simplest way is to buy silver is through silver exchange-traded funds. But they’re not available in India. You can always buy bars and coins but storing them can be a problem. The most practical solution is to buy e-silver. E-silver was launched recently by National Spot Exchange. This is similar to buying shares and holding them in a demat form.

National Spot Exchange has 370 brokers and 40 depository participants (DPs) empanelled on it. All you’ve to do is approach your broker and sign a client registration form, one-time cost of which is Rs 100. Annual depository maintainence charges could be between Rs 300 and Rs 600 a year.

Whenever you transact, the brokerage charge is between 0.25% and 0.50%, and depository transaction fee is Rs 25-50 per transaction. For physical delivery of the metal, you have to pay Rs 200. Currently silver is delivered at National Spot Exchange centres in Delhi, Mumbai and Ahmedabad.

But even in this case, investors need to be careful not bet all their money on silver. “Since silver is a volatile commodity, retail investors should invest through the systematic investment plan route,” says Karun Verma, senior research analyst, Religare Commodities.