Molybdenum does to the human body

1. Maintain the myocardial energy metabolism: Kekai molybdenum chart is a composition of several kinds of enzyme in myocardial, play an important role in myocardial energy supplies. Keshan disease is a kind of cardiomyopathy, has proved that selenium deficiency is one of the causes, but more direct reason is the lack of molybdenum.

2. Molybdenum and immune: on the immune function of patients with keshan testing found that specific cellular immune function is reduced, molybdenum crucible deficiency crowd of supplements molybdenum immune function recovery. But too molybdenum also have damage to the immune function, and this has been confirmed in the animal experiments.

3. Adjust the thyroid gland secretion: research has shown that in keshan disease ward in the crowd and molybdenum and selenium, can adjust the thyroid function, thyroid function returned to normal.

Molybdenum deficiency may be one of the cause of esophageal cancer.

The Chinese nutrition society made the daily diet of molybdenum disk "safety and appropriate intake" reference indexes, infants less than 6 months each 0.03 ~ 0.06 mg per day, 1 year old of less than 0.04 ~ 0.08 mg per day, 1 over the age of 0.05 ~ 0.10 mg, 0.06 ~ 0.15 mg, aged 4 7 years old of above 0.10 ~ 0.30 mg per day, 11 years of age or older to adult is 0.15 ~ 0.50 mg per day per person. This index and the scientific research committee of food and nutrition council estimates of "safe and appropriate

Platinum metal metallurgical physical properties make it a spot weldability is poor

Platinum metal metallurgical physical properties make it a spot weldability is poor, platinum products at home and abroad to connect far more riveting process . Developed by the authors of this " single- cycle pulse key projection welding foil new technology" , as well as to achieve the two layers of platinum foil product no cushion welded directly in the trial production of some products can be indicated in the application . Introduced the new technology is the main process  tungsten carbide ball  and connector connection mechanism . Product launch tube projection welding weld head surface topography x50 bump bonding design, direct spot platinum foil electrode and the workpiece surface will produce serious  tungsten carbide plate  which destroys the normal spot . Domestic and international studies show that bonding is difficult to achieve with products direct spot one important reason . After use of projection welding , the current can be in the dyeing of the bump and the internal heat increases the distance between the electrode surface , the temperature gradient along the thickness direction is easily formed . Meanwhile, the projection welding electrode end face than the large multi- spot welding , a significant increase of the contact area of ??the electrode and the workpiece , reducing the welding electrode and the workpiece surface the heating intensity , which are effective in reducing the sticking of the electrode . Further , since the projection welding can reduce the energy input ( reduced welding current ) , reducing grain products grew , the key to improve the welding heat brittleness .

Luan River " China Molybdenum " Think long-term plan spanning

cooperation through the base of the Ministry of Land , being implemented in geology and mineral resources of nine projects , invested 50.8 million yuan ; being declared the project 3 , project funding 500 million yuan or more ; preliminary base through cooperation, carry out theoretical research, metallogenic prediction and system exploration , etc., for the first time in some prospecting prospecting targets to achieve major breakthroughs , discovered large, very large lead-zinc- silver Origin 4
At the same time , an important support base platform, is a landmark research building has been capped and will soon be officially put into operation , will become the various geological research , the subject of the " incubator" ......
Recently, the reporter went to the " China Molybdenum " Luanchuan , always see the Mineral Resources and Geological Environment research bases brought gratifying changes . CNMn. The county's Bureau of Geology and Mineral Resources Secretary Weimin Jiang smiled and told reporters : "Through research base construction, will completely change Luanchuan " a molybdenum dominant " pattern , the" China Molybdenum crucible are "playing an important cause of molybdenum lead-zinc polymetallic mineral , achieved by mining county to county across the mining industry .
The courage to play blaze new paths
Luanchuan area located in the 16 major metallogenic belt southwest of Henan , one of lead-zinc mineralization molybdenum core area , is China's famous " Molybdenum " location and an important base metal ores .  Up to now, the region has been found , and more than 50 kinds of proven mineral resources , including , molybdenum, tungsten carbide plate, gold , zinc, silver , fluorite rich reserves , proven reserves of molybdenum ranks first in Asia and third in the world , as China's important mineral resource base. Currently, there Luanchuan mining enterprises 258 , day -scale mining has more than 110,000 tons , daily processing capacity of nearly 12 million tons.  Mining economy of the county more than 80% of GDP , the local socio-economic development and provide a strong support .
However, as China's important Luanchuan molybdenum and tungsten silver and other nonferrous metals lead and zinc mineral resources base, especially in recent decades, with 10 years of strong resource development, protection of reserve capacity is obviously insufficient resources , basic geological research , deep prospecting, comprehensive utilization of resources , resource and environmental development capacity has lagged behind the extensive mode of economic growth has not fundamentally changed , production safety and environmental destruction are still many problems . How to break the bottleneck of the development of resources , promote sustainable economic development ? This has become imperative LUANCHUAN economic development

Big Wu Tong tungsten mine

Average grade of 0.2 percent, according to the production 365 days a year, the annual output will reach 14,600 tons. Copper Lead Zinc Tin nickel, China Nonferrous network, a small metal, scrap metal. If the large tungsten mine HUTANG built according to plan, tungsten 130,000 yuan per ton at current count, it will be more than 2 billion yuan in output value
Proved reserves of tungsten ore large HUTANG rather convoluted process: in 1958, Jiangxi Geological Team in Wuning found this tungsten mine, but it was only 3000 tons of proven reserves. Small metal, scrap metal. After the reforms, mine exploitation by a number of mines, they fragmented, predatory exploitation resulting waste rock waste sand hill and dale. Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal. In 2007, a large tungsten mine HUTANG is listed as "Jiangxi Key integrate mine." Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal. By SOE restructuring and integration, wuning Dian Liu Ping in Jiangxi giant acquired a great pass in the name of Wu Tong mine, get the Southern District of tungsten ore, tungsten carbide plate ore two mining rights in the North. Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal. February 2010, Xiamen Rainbow invested 117 million yuan in Jiangxi Giant bought a 30% stake, and spent 230 million yuan prospecting. Small metal, scrap metal. Jiangxi geological team in just a short period of 18 months, they proved this "the world's largest tungsten mine." Copper Lead Zinc Tin  nickel,
According to informed sources, the amount of resources to be proven before the Big Wu Tong tungsten mine was approved yield index of 1,200 tons / year. Copper Lead Zinc Tin nickel, China Nonferrous network, a small metal, scrap metal. In fact, because beneficiation plant at an altitude of 1400 meters above the mountains, at least a quarter of a year due to cold can not be produced, a large tungsten mine HUTANG actual output of only 600 tons, a normal year earnings, but ten million yuan, the price of tungsten encounter low will be a loss. Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal. Resources are proven, the parties re-planning the use of large HUTANG tungsten mine expansion programs, including the beneficiation plant moved down the mountains to protect perennial normal production.
According to informed sources, a large tungsten mine HUTANG features one large reserves, the second is more metal associated, associated with copper, molybdenum, tin, silver, etc.; but low grade tungsten (average grade of about 0.2%), the ore body is not thick, and is located in high altitude areas, you need to complete the road, and thus higher development costs. Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal. On beneficiation technology, multi-metal mine against the associated characteristics, beneficiation process requires further research, in order to select the optimal process route. Copper Lead

Wolframite often associated with quartz veins symbiosis together.

Tungsten is a rare element in the earth's crust is only 0.007%, China's tungsten reserves of about 55% of the world's total reserves, ranking the first place. North, northwest and southwest are output, especially in the west of Guangxi, after Hunan, Guangdong, Jiangxi, Fujian, east Nanling Mountains area, tungsten ore up. Among them, the most concentrated in southern Jiangxi, the size of mine hundreds place, down hill, West Mountain, Kui Miyama, Pangu Hill are renowned tungsten mine.
Tungsten smelting of mineral raw materials abroad and foreign long-standing development of different tungsten ore, mainly scheelite, the total production capacity by 60%. In China, despite scheelite has proven reserves of 3.76 million t, accounting for total reserves of tungsten ore 71%, but due to some large, very large tungsten polymetallic ore deposit complex material composition, disseminated fine granularity, metallurgical technology is not yet completely resolved, and therefore at this stage is still mined quartz vein wolframite, accounting for the national mining outputs of 90%.
(2) the nature of
tungsten carbide plate is lithophile elements, mainly in the form of tungstate present in pegmatite and hydrothermal deposits; known tungsten mine about 15 species, of which there are wolframite and scheelite two kinds.
(1) wolframite (Fe, Mn) WO4, also known as wolfram, containing approximately 76% WO3, brownish black to black, which was semi-metallic luster, specific gravity of 7.1 to 7.9; belong to monoclinic crystal often has a thick plate, crystal surface often vertical lines. Wolframite often associated with quartz veins symbiosis together.
(2) scheelite CaWO4, also known as calcium tungstate ore, containing about 80% WO3, often white, sometimes slightly yellow, purple, light brown and other colors, which was adamantine luster or oil sheen, a specific gravity of 5.9 to 6.1 ; are tetragonal crystal often has double cone, mostly irregular aggregates dense granular or lumpy. Scheelite often associated with molybdenite, galena and sphalerite symbiosis together. Known mainly quartz tungsten ores - wolframite ore skarn - scheelite ore and placer and other types.

the market price gap between

Downstream smelting enterprises have begun to exercise alone, tungsten ore or slow decline
[Tungsten Online News - Tungsten News]
Tungsten market continues weak run, the market price gap between. It is understood that 65 degrees wolframite concentrate on the mainstream market 13.9-14.1 yuan / ton, ex-works focused on 14-14.2 yuan / ton. But the spot market is still 143,000 yuan / ton high offer, there are also some traders to take advantage of business confidence, lowering price, as low as 137,000 yuan / ton in the vicinity, close to the hair ore prices.
We believe that this downward trend analysis may not be very violent, will not last for a long time, the tungsten carbide plate market or small correction. Main reasons: First, the tungsten ore production cost will support prices at a certain high level; Second downstream smelting enterprises for a long time did not purchase raw materials pre-concentrates, stocks need to be supplemented, we understand that some enterprises have begun to exercise alone.Core Tip: tungsten weaker prices continued to remain low, the market is big difference, having a little downside. Primary molybdenum businesses hold goods to be up, the market operation is relatively calm, thin trading, offer high trend.
Tungsten market: tungsten weaken, prices continued to remain low, the market is big difference, wolframite 13.7-14.3 yuan / ton between the quotes and recent market outlook fell less space; tungsten carbide weak demand, turnover from the previous less; sodium tungstate start low; scrap tungsten prices steady turnover weakened or slipped.

investors showed a decline hidden.

Core Tip: Tungsten wire weak market demand, yet a large institutional procurement plans, business confidence, the market price fell, investors showed a decline hidden.
Tungsten market: tungsten carbide plate weak market demand, yet the large institutional procurement plans, business confidence, the market price down 137,000 yuan / ton in the vicinity, having hidden in a DOWN trend; tungsten iron factory operating rate, offer still confusion , but with the tungsten ore prices, and the prices look a little weak; scrap tungsten watching the market atmosphere, deserted trading environment, we expect more than short-term maintenance of stability will be disadvantaged.
Molybdenum market: Western Europe and other external molybdenum market prices down slightly again signs of low volatility and the outlook remains. Domestic spot too few resources, many businesses maintain a wait state, the actual turnover situation needs to be improved. With the introduction of the late season, the venue pulled forward price of molybdenum end demand is still expected. As late demand improved, some commodity prices remain elevated molybdenum possible.There are rare insiders believe that Toyota chose a joint venture with Corun, ulterior motives, but through CORUN continually get more numerous, cheaper rare earths. If the investment here in Baotou Rare Earth, the degree of concern would be too high.
Although Japan and several countries to seek cooperation in earth, but in Japan through various channels into China rare earth industry chain moves, showing the dependence on Chinese rare earth in Japan is still more serious.
According to Japanese media reports, January-April 2013, Japan's rare earth imports increased by 19% compared with the same period last year, reaching 4,300 tons. Among them, the domestic rare earth 63% over the previous year increased 11 percent.

Russo-Japanese joint position to suppress China Rare Earth

[Tungsten Online News - Tungsten News]
Starting in 2011, China has gradually reduced the exports of rare earths to Japan, the world's major exporter of rare earth lose their status, but did not realize that Russia would like to replace, and Russia to realize this dream, certainly indispensable support of Japan, because Japan is the the world's biggest importer of rare earth, if Pong on Japan, Russia and the earth to worry about sales. Currently the two countries have many contacts on the matter, Japan has indicated support for the Russian position, on condition that Russia would like Japan to open rare earth market.
With the deepening of the CCP corruption, more and more rare and arrested because of corrupt officials, it can be predicted that the issue of rare earth field collusion will be resolved sooner or later, when the Japanese rely on smuggling of rare earths from China will be the middle of the road, so Russia and Japan to cooperate in the field of rare earth is not impossible. tungsten carbide plate Russia may borrow earth channel toward the South China Sea, together with the previous relations with Vietnam, get involved in the South China Sea is not only deeply rooted Russian, and is advancing with the times, it is very worthy of our vigilance.
Rare is the nuclear industry and military industry, the key raw material, in Japan they are today, with the support of cheap Chinese rare earths are not unrelated, but Japan's rare earth refining technology has its very tight watch, China has negotiated with Japan 10 next year, requiring Japan to China or to the rare earth processing technology and processing base in China moved, but the Japanese life and death do not agree, even the Chinese rare earth export to interrupt the threat, Japan remains indifferent, but strangely, this time in Japan in order to get Russia earth, or to deepen cooperation with Russia, even to kill a chicken to take eggs, the Japanese side has agreed to Russia's request to prepare the rare earth processing base and research base all built in Russia, say, Putin married out Rare earth lady, in addition to Putin sent Abe dowry dowry than there - can be grafted rare earth refining technology.
In accordance with the views of experts in Japan, the Japanese plan is to steal the Diaoyu Islands, and then to seize Dokdo, so four islands Quartet for the Japanese is a very long-term goal, the Japanese and the Russians can shelve disputes and jointly advance the South China Sea effort to deal with China; Second, with rare cooperation deepens, will lead the two countries in the economic sphere or other areas of cooperation, even in the South China Sea, a united front to fight against China. Again it all comes down to solve the South China Sea issue sooner rather than later, too late, if the relevant national united front, China or Russia will become the enemy of the United States, outnumbered, more difficult to win.
According to the United Zaobao quoted the British "Guardian" message (People Title: skinny starving polar bear global warming), is located in the Norwegian Arctic Svalbard archipelago discovered the shocking scene of sorrow. 40 years of research polar bear expert Dr. Ian Stirling said they found a polar bear in the Svalbard archipelago starve, "I believe he is hungry to no effort down death," initial indications "It's almost no body fat, lean to become almost only skin and bone." This situation occurs because the warming Arctic sea ice area so last year dropped to the lowest ever recorded, so the lack of sea ice to hunt seals, polar bears do nothing, forced farther and farther for food, but in the end is still to find Less than food, had starved to death.

nylon, acrylic (PMMA), abs, pc, pp, pvc, pe, plastic bags, plastic, etc.;

Recycling mold, mold Xiamen recycling, recycling mold price Xiamen, Xiamen recycling mold iron, steel, scrap yards mold
     I. Hardware: phosphor bronze, copper, copper, bronze, brass, copper-nickel alloy, plated white phosphor, motor copper, copper wire, copper mold, bronze pieces, scrap clay, copper sand, copper scrap, copper scrap wire, copper wire, copper pipe, copper plates, copper scrap, industrial scrap, machinery and copper, scrap motors, motor scrap transformers, aluminum, aluminum scrap, PS aluminum, aluminum, stainless steel (301 #, 304 #, 316 #, etc.), zinc alloy, lead-free solder (green tin), with tin, tin, tin slag, solder wire, solder paste, lead, mold iron, tinplate, cold rolled iron, industrial scrap, etc.;
     Two. Rubber and plastic types: silicone, nylon, acrylic (PMMA), abs, pc, pp, pvc, pe, plastic bags, plastic, etc.;
     Three Rare categories: nickel, tungsten carbide plate, chromium, rhodium, molybdenum, cobalt powder, tungsten wire, tungsten steel, etc.;
     Four. Electronic waste: waste PCB circuit board (PCB phone), scrap wire and cable, transformers, chargers, IC, capacitors, electronic foot, silver solder, lead-free solder containing tin, tin slag, tin, tin ash, Paste, waste cable wires, diodes, transistors, resistors, circuit boards, inventory clearance, etc.;
     V. waste batteries: nickel metal hydride batteries, nickel cadmium batteries, lithium batteries, polymer batteries, lithium ion batteries, lithium batteries phone batteries, PDA batteries, walkie-talkie battery;
     VI. Scrap Cobalt: Cobalt aluminum paper, lithium cobalt oxide, nickel, lithium cobalt oxide, cobalt powder, battery positive electrode, negative electrode, battery pole edge material, 42 # red edge material, 79 # red edge materials, electroplating anode material;
     VII. Nickel scrap: electrolytic nickel electroformed nickel, nickel scrap, nickel foam, battery conductive nickel plate, nickel belt, nickel sheet, nickel foil, nickel mesh, nickel alloy scrap;

Product to be handled before plating porous material filling

Castings or other possible with loose, porosity, blisters, slit or parts with micro-cracks will encounter a similar situation. Powder metallurgy parts and other porous material in the electroplating process was easily penetrate not only difficult to clean, and the residual leakage in the future will destroy the coating bath and in contact with other materials.
Without sealing of such parts, the only way after plating only be repeated soaking and cleaning, alternating hot and cold water will often be helpful.
The thickness of the coating will be affected. If the coating is thin, the coating will not affect the cleaning, just pay attention to careful and thorough cleaning. Sometimes when dry washed oozing check the pH of the water or salts, can also be a general understanding of whether or not thoroughly cleaned.
If the coating is thick plating speed, sealing can often play a role. Many problems intermediate thickness of the coating. Because the coating is often incomplete in the opening portion is formed in the bridge. This architecture makes cleaning particularly difficult.
Currently popular approach is to porous resin parts such as powder products, or some of the melted wax compounds the hole closed. With pore-filling method to avoid the problems caused by not thoroughly cleaned, while selecting the electroplating process used to try to avoid a solution containing corrosive or corrosive media promotion, such as avoiding a solution of chloride ions and other substances.
To fill the hole shall be filled with a high tungsten carbide plate before baking to remove fumes, so you can remove the oil remaining in the hole to help the sealant to enter and combine divisible dip resin closed after oil, vacuum filling effect than simply soaking better. General product used zinc stearate soaked in 150-180 degrees, sealing effect is also good, but the plating process should avoid using strong acid to prevent the closure material dissolved.
Porous parts after plating dip in overlapping good performance replacement-type anti-rust oil is also good. Because such ability to penetrate the oil, corrosion and water displacement effects are strong, help cleaning is not thorough enough to prevent excessive corrosion damage.

Status of tungsten and molybdenum vanadium industry development direction and 12 five analysis

2011 China International Tungsten molybdenum plating Vanadium Development Forum, China Nonferrous Metals Industry Association vice president Mr. Chinese military literature tungsten and molybdenum vanadium industry status and development direction of Twelfth Five-made reports. At the meeting, he noted that in 2010 the price of tungsten strong performance over 2008 pre-crisis levels. Tungsten concentrate prices throughout the year from 70,000 yuan / ton rose to 108,000 yuan / ton, up 54 percent year on year. Primary smelting products APT Price: from 107,000 yuan / ton rose to 169,000 yuan / ton. Total annual production of tungsten concentrates produced 115,000 tons (equivalent to 65% WO3), equivalent to the amount of 59,000 tons of metal, up 16%, accounting for over 80% of the world total. tungsten carbide plate exports recovered significantly, the annual volume of total exports of 22,000 tons of metal, an increase of 74%, back to the 2008's 92%. Chinese molybdenum concentrate production of about 80,000 tons, an increase of 9.6%; continued to hold the first in the world, accounting for 37.4%. In 2010, Chinese exports of 19,500 tons of molybdenum, an increase of 1.35%, molybdenum export volume of 1.7 million tons, down 51.3%, net imports of 2,500 tons. Molybdenum products export structure to achieve a net importer to a net exporter of changes. Vanadium prices rebounded in 2010, but the overall oversupply, or not. China is still the world's largest vanadium producer, in 2010 51.6% of the total world exports in 2010, China exported about 15,000 tons of vanadium products (equivalent V2O5), doubling year on year. Exported 7,045 tons of vanadium pentoxide, an increase of 64%; vanadium iron about 6,000 tons, an increase of 140%; vanadium nitrogen alloy 217 tons, an increase of 146% of domestic consumption in 2010, consumption of about 41,000 tons of vanadium (equivalent to V2O5), an increase of 13%. Vanadium steel industry is a major consumer areas, accounting for about 90% of total consumption of vanadium. Expects the global consumption of tungsten forecast over the next five years the average annual growth of 4% of tungsten demand forecast over the next five years the average annual growth of 6%. Finally, he summed up the tungsten-molybdenum vanadium second five directions: a: rational development and utilization of domestic resources, to prevent excessive consumption of resources; 2: Strengthening rare new materials research and development, accelerate product upgrading; 3: strict control of low-level redundant construction blindly, accelerated growth patterns; 4: to accelerate structural readjustment, promote strategic integration and restructuring, increased industrial concentration; 5: to promote energy conservation and reduce energy consumption; 6: Strengthen integrated resource recycling, the development of recycling economy and green economy; 7: active use of foreign resources, and enhance the resources and support capabilities.

The nature of molybdenum
     Of molybdenum and tungsten is very similar in nature, its boiling point, and outstanding electrical conductivity, thermal expansion coefficient, more easily processed than tungsten.
     Molybdenum metal thermal conductivity [135 W / (m · ON)] and specific heat [0.276 kJ / (kg · f open)] was the best match, making it a thermal shock and thermal fatigue of natural selection. Its melting point is 2620 ℃, inferior tungsten, tantalum, but the density is much lower than, so its specific strength (strength / density) than tungsten, tantalum and other metals, in the weight requirements extremely critical applications, more active. Molybdenum at 1200 ℃ still high strength.
     The main disadvantage of Molybdenum tube high temperature oxidation resistance is poor (above 600 ℃ rapid oxidation) and poor ductility at room temperature. As weaknesses, problems for multi-use high-temperature oxidation coating (such as paint MoSi2, nickel, chrome, etc.) way to control; pair of plastic which is usually too poor to say the lack of low-temperature embrittlement, and processing people through strengthening alloy carbides to achieve enhanced and other measures to solve.
     tungsten carbide plate (W), rhenium (Re), tantalum (Ta), titanium (Ti) and zirconium (Zr), etc. are common solid solution strengthening element. Tungsten is the primary solid solution strengthening elements molybdenum, rhenium can be extended to brittle transition temperature dropped -200 ℃. Formed by them industrial molybdenum alloy Table 1-1. Which constitute the lanthanum molybdenum lanthanum alloy shows very prominent and high temperature creep deformation capacity, which at high temperatures, this feature is particularly evident.
Applications
   Vacuum furnaces, glass melting, electronic devices, heat sink
Thermal processing tools, stoves installed appliances
Hot work toolMolten zinc treatment, sputtering target
Traveling wave tubes, rocket boostersSintering boat