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99% Sodium Tungstate 413

99% sodium tungstate’s impurities may be determined using lanthanum hydroxide as coprecipitation agent by inductively coupled plasma atomic emission spectrometry (ICP-AES method) after coprecipitation separation and concentration of these impurities. These trace metal impurities are calcium, tin, cobalt, copper, iron, manganese, zinc, and nickel, etc. The determination of trace metal impurities must be performed on a high resolution spectrometer if the ICP-AES method is adopted directly. That is because the matrix tungsten often has severe spectral overlap interference with the…

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Fe-doped Tungstic Acid 657

Fe-doped tungstic acid may be prepared using sodium tungstate and iron salts as materials. Since Fe initiates the Fenton reaction, the photocatalytic activity of tungstic acid is greatly improved. Also, this is a heterogeneous reaction that avoids the loss of iron ions and thus enables the reuse of the catalyst. Tungsten compounds have a wide range of applications in the field of photocatalysis. These compounds can undergo intramolecular charge transfer under the irradiation of ultraviolet light, thereby triggering the degradation…

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Industrial Grade Tungstic Acid 647

Industrial grade tungstic acid is an intermediate compound of ammonium paratungstate (APT) in powder metallurgy. Preparation of Industrial Grade Tungstic Acid Step 1: Add tungstic acid raw material with a purity of 99.95% into the inorganic acid solution, the mass ratio of the inorganic acid solution to the tungstic acid raw material is 1:1 to 2:1, ultrasonic irradiation oscillation for 3h-6h. The temperature is controlled at the range of 20°C~40°C, suction filtration to obtain filter cake solid; Step 2: Put…

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High-purity Tungstic Acid 625

High-purity tungstic acid is a new chemical material with a wide range of application prospects, which may be prepared by a new process of dissociation – slurrying – acid decomposition, with purity higher than 99.99% and average particle size of 0.61μm. The process is stable and easy to operate with high transformation rate. Tungstic acid may be produced by acid decomposition scheelite concentrate method, ammonium paratungstate method, artificial scheelite method, ammonium paratungstate sodium method, and the method of acid decomposition…

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Nano Grain Size Tungstic Acid 651

Nano grain size tungstic acid may be synthesized by chemical precipitation method using ammonium metatungstate (AMT) and hydrochloric acid (HCL) as raw materials, and the agglomeration of nanoparticles may be effectively improved with the addition of ethanol. And nano tungstic acid with high purity, small particle size and good dispersion may be prepared by liquid phase precipitation method in the alcohol-water system. Synthesis of Monodisperse Tungstic Acid Nanoparticles by UV Irradiation Monodisperse tungstic acid nanoparticles with an average particle size…

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Tungsten Alloy Multileaf Collimator 355

Tungsten alloy multileaf collimator is composed of 120 tungsten alloy gratings. It has a good shielding effect on radioactive materials and is widely used in radiological medical technology. Characteristic The main ding of the tungsten alloy multileaf collimator is to replace the hand-made irregular lead stoppers. In the course of treatment, the motion of each blade is controlled by a computer to form an irregular shape that is clinically required. Its blades are made of tungsten alloy, which is much…

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Tungsten Multiple Layer Multileaf Collimator 343

Tungsten multiple layer multi-leaf collimator has good radiation shielding and environmental protection. It is widely used in radiological medical technology and can precisely control the direction of the radiation. Characteristic Tungsten multiple layer multileaf collimator is composed of multiple tungsten alloy blades that block the radiation, and each tungsten alloy blade is closely adjacent. It has good radiation shielding and environmental protection. It can be quickly tracked and has high accuracy. It can be used in radiotherapy equipment to better…

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Tungsten Alloy Multileaf Shielding 287

Tungsten alloy multileaf shielding is used in equipment for medical radiation therapy. It has a good shielding effect on radioactive materials and is widely used in radiological medical technology. Characteristic Tungsten alloy multileaf shielding is made of tungsten alloy. Tungsten alloy is a kind of high density metal material, which can have a shielding effect on radioactive materials, reduce its physical thickness and will not reduce the shielding ability. With the same shielding effectiveness, tungsten alloy multi-leave shielding has only…

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Tungsten Grating Blade 315

Tungsten grating blade is an important part of multi-page grating has good radiation shielding and environmental protection. It is generally installed in a multi-page grating and widely used in radiological medical technology. Characteristic Tungsten grating blade is a thin plate made of tungsten alloy material containing more than 90% tungsten. It has high density, high radiation shielding, non-toxic environmental protection and other excellent characteristics. It is usually installed in a multi-page raster that is usually installed 50 to 120. Applications…

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Tungsten Radiation Protective Tank 354

Tungsten radiation protective tank has strong radiation absorption ability and good performance for all kinds of radiation. It has high density and non-toxic environmental protection. It can be applied to industrial and medical fields. Applications 1. Tungsten radiation protection tank can be used as medical tungsten radiation shields to store containers for liquid or solid isotope radiation sources needed for radiation therapy. 2. It can be manufactured into radiation shielding cans, shielding boxes, shielding barrels and syringe protective sleeves. 3.…

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