What Can Be Done to Protect from the Harm of Gamma And X-Rays
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- Category: Tungsten's News
- Published on Sunday, 18 January 2015 17:14
- Written by TungstenAlloy
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Study shows that the density of a radiation shielding material decides its penetration by gamma and x-rays. The denser the material, the more the gamma or X-ray intensity is reduced.
As we know, lead is the densest of commonly available material, which has been used to provide shielding from gamma and x-rays. However, it should be recognized that lead is not the densest element. For example, tantalum, tungsten, and thorium are higher on the density scale, but lead is readily available, easily fabricated, and cost less than these materials. Lead bricks can be purchased and arranged in various ways to shield radiation.
Compared to lead, tungsten shows much active effects on gamma and X-ray radiation protection, as its much higher density, good machinability, environmental-friendly and high hardness. It could be machined into different shapes as per different working environment and requirement. However, cost for tungsten manufacture and machining is higher than the lead material.
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Tungsten market purchases difficulty increase slightly higher price range
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- Category: Tungsten's News
- Published on Friday, 16 January 2015 13:59
- Written by HJF
- Hits: 933
Tungsten market: With the recent increase of raw materials procurement Scheelite difficult, purchase price increases, tungsten powder manufacturers offer by this week to support and maintain strong, and the high price range is slightly higher, the price of tungsten powder or concentrated in the mainstream 205-210 yuan / kg. End of the market demand is still busy, so late to continue sharply upward blocked, before the Spring Festival, or stabilization of the main powder prices.
Molybdenum market: copper, nickel and other metals group fell peripheral, so molybdenum market fears increase, downstream active buying scarce, steel mills have negative procurement, market supply and demand fundamentals did not improve, resulting in molybdenum market dip cycles. Short-term market is expected to continue to weaken.
Read more: Tungsten market purchases difficulty increase slightly higher price range
Procurement Inquiry tungsten powder increased support was up quotes
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- Category: Tungsten's News
- Published on Friday, 16 January 2015 13:56
- Written by HJF
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This week tungsten powder smelter home offer a slight increase, the range quoted slightly raised high, and gradually approaching the range of high turnover. Analysis predicts end of the market demand is still busy, so late to continue sharply upward blocked, before the Spring Festival, or stabilization of the main powder prices.
The powder products prices for two main reasons: on the one hand raw tungsten concentrate market upward, raising the cost of supporting tungsten powder prices, also contributed to the increase downstream manufacturers purchase intentions; on the other hand, the end of this week, will soon be home tungsten powder smelter shutdown maintenance, single or downstream users continued under the new orders in the near future, the recent increase in actual demand.
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Overseas tungsten City sluggish demand, only a small turnover
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- Category: Tungsten's News
- Published on Friday, 16 January 2015 13:57
- Written by HJF
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Overseas demand remained sluggish tungsten City, only small-scale transactions, tungsten iron prices stable Europe was down, is expected before the Spring Festival, or hard tungsten overseas rose. It is understood that the Vietnamese sun star tungsten industry started trial production of sodium tungstate.
The latest week MB Rotterdam ferrotungsten 33-34 USD / kg of tungsten, the average price fell $ 0.5, paratungstate Eurodollar 270-315 / metric ton, the average price fell $ 2.5.
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Department of Commerce: tungsten, molybdenum export quotas for products with resource management reform
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- Category: Tungsten's News
- Published on Friday, 16 January 2015 13:54
- Written by HJF
- Hits: 1055
January 13, Commerce Department of Treaty and Law Department official on the Chinese Government to abolish export quotas for rare earths and other management issued a statement.
Recently, the Chinese government abolished for rare earths, tungsten, molybdenum and other products of export quota management, aroused great concern. Commerce Department of Treaty and Law Department official has issued a statement that the rare earths, tungsten, molybdenum and other products of export quotas cancellation product management reform is in line with the domestic rare earth resources such as class I, at the same time, considering the implementation of a WTO ruling related to the conduct of policy adjustments.