Tungsten Metal Price

Radiation protection from tungsten nanotechnology

Details: Category: Tungsten's News; Published on Tuesday, 16 June 2015 18:50; Written by wenjing; Hits: 802

The Fukushima nuclear reactor accident has increased demand for efficient, non-toxic, and lightweight gamma radiation shielding materials, as its absence caused serious delays in managing the situation, and conventional lead-based shielding materials introduce adverse health and environmental effects.

A team constructed a lattice-based MCNP model to simulate the relationship between tungsten particle size and gamma-energy-dependent attenuation. They observed the size effect increases as the gamma energy decreases, while it decreases and disappears all energies higher than ~1 MeV. They also verified this concept experimentally by measuring the gamma attenuation using three different energies (~0.3 MeV to ~1.2 MeV) for both nano- and micro-systems.

More importantly, they developed a simple but efficient preparation method for such materials. In-situ pulverization of micro-tungsten powder with polyethylene powder using high energy ball milling produced nano-tungsten powder, the surface of which is encapsulated by PE. Based on this method, a nano-tungsten/polyethylene dispersed polymer nano-composite was prepared using a conventional polymer extruding process, which is readily applicable to mass production. Nano-tungsten containing products for shielding X-ray and gamma radiation including a full body apron and a thyroid guard-are the first commercially available, it can greatly enhance both the material properties and the shielding efficiency.

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Carbide domestic business orders decrease over last year

Details: Category: Tungsten's News; Published on Tuesday, 16 June 2015 14:27; Written by HJF; Hits: 880

Last week the domestic tungsten market conditions continue to decline, further price dip, demand weakness unchanged. Looking at the market, the downward trend of consolidation has not changed. Prior tungsten ore prices dip, mine face cost pressures, some choose shutdowns, one is to reduce inventory, slow the pace of production; secondly, low current market price, mining sales will is not strong, hope rose serious psychological. The production scale of the APT manufacturers have a more significant decline, in spite of all production of the manufacturers are not many, but production has been the choice of most of the smelters.

In order to follow the market, the week before Minmetals and Ganzhou ITIA have reduced the monthly price, and the market close. Still, the dilemma is still difficult to break through the downstream carbide business orders are still huge compared with same period last year. Weak consolidation market situation has not changed.

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Home smelter production enthusiasm is low, scheelite inquiry continue dropping

Details: Category: Tungsten's News; Published on Tuesday, 16 June 2015 14:21; Written by HJF; Hits: 772

Tungsten City sluggish demand, low motivation smelter home production, raw material procurement tungsten concentrate is not very urgent to find only low supply, 50-55 degrees scheelite inquiry constantly dropping, or are expected late 70000 the following inquiry.

Macro, Beijing, Tianjin and integration will bring a huge amount of investment, real estate and other industries benefit; SOE reform program or series have been put forward in late June; pushed around competition PPP projects steady growth plus leverage, with total over 3 trillion.

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Tungsten Market demand sluggish, concentrate prices were slightly lower

Details: Category: Tungsten's News; Published on Tuesday, 16 June 2015 14:24; Written by HJF; Hits: 860

Tungsten market: Tungsten City sluggish demand, low motivation smelter home production, raw material procurement tungsten concentrate is not very urgent to find only low supply. Tungsten concentrate prices were slightly lower, the mainstream offer 80,000 yuan / ton, the actual transaction price of about 78,000 yuan / ton, cost and cargo operators reluctant to sell support, tungsten-based product prices gradually stabilized stabilized, but the offer is still relatively high decrease, whole tungsten market is still stable and slightly weaker.

Tungsten market prices fall, traders wait and see

Details: Category: Tungsten's News; Published on Monday, 15 June 2015 14:57; Written by HJF; Hits: 802

Tungsten market: Tungsten city needs yet to see a positive factor, but after repeated tungsten price decline has been very close to or exceed the cost, tungsten-based product late to continue down the limited space, powder prices fell, scrap tungsten steel market prices fall again spot market transactions better than last weekend, bar, CNC blade, milling and other markets is still some demand, scrap tungsten steel traders wait and see, expected short-term price of tungsten or low consolidation mainly tungsten concentrate market or There are slightly lower, but does not rule out the possibility of shock consolidation.